{"title":"Basement Waterproof Membranes","description":"\u003cp\u003e\u003cmeta charset=\"utf-8\"\u003eShop our range of basement waterproofing membranes, designed for use as part of Type C cavity drain waterproofing systems. Choose from 3mm, 5mm, 8mm and 20mm membranes for basement walls and floors, including meshed and non-meshed options from leading brands including Newton, Wykamol, Delta, Platon and Platinum.\u003c\/p\u003e","products":[{"product_id":"newton-cdm-503-waterproof-membrane","title":"Newton CDM 503 - Cavity Drain Waterproof Membrane (3mm Stud)","description":"\u003cp\u003eNewton CDM 503 Waterproof Membrane is a white HDPE cavity drain membrane with a low-profile 3mm round stud design, developed for Type C drained protection waterproofing on suitable walls, floors, tunnels and vaulted soffits.\u003c\/p\u003e\n\u003cp\u003eSupplied as a 2m x 20m roll covering 40m², CDM 503 forms a controlled cavity that separates internal finishes from damp or contaminated substrates. Water entering the structure can then move towards Newton BaseDrain, FloorDrain, a suitable gravity outlet or a correctly specified sump-and-pump system. The shallow profile is particularly valuable where headroom or wall build-up is restricted.\u003c\/p\u003e\n\u003cp\u003eCDM 503 is BBA certified under Certificate 22\/6357 and declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017. It resists water, alkalis, saline solutions, organic acids, minerals, hydrocarbons, rot and biological attack. The membrane cannot resist water pressure as a standalone barrier; reliable performance requires a project-specific Newton CDM system with sealed joints, protected finishes, suitable drainage, ventilation and planned maintenance.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features of Newton \u003cspan\u003eCDM \u003c\/span\u003e503 Waterproof Membrane\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ Low-profile 3mm round-stud membrane ideal where headroom or wall build-up is limited.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for earth-retained walls, appropriate floors, tunnels and vaulted soffits within a designed Newton CDM Type C system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified under Certificate 22\/6357 and declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ 250kN compressive strength, 0.5kg\/m² unit weight and proven watertightness at 60kPa for 24 hours.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Supplied in a 2m x 20m roll covering 40m², with a stated 30-year product warranty and life expectancy equal to the design life of the structure when correctly specified, installed and protected.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e3mm Cavity Drain Membrane For Type C Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 503 is a specialist internal waterproofing membrane designed for projects where a conventional 8mm cavity membrane would use valuable headroom or increase the wall build-up unnecessarily. Manufactured from white high-density polyethylene, its compact 3mm round-stud profile forms a defined cavity between the existing structure and the protected internal finish. This separates plasterboard, flooring and decorative finishes from damp, salt-contaminated or water-affected backgrounds without requiring extensive removal of otherwise sound masonry. The membrane can be used on suitable earth-retained walls, concrete rafts and slabs, tunnels and vaulted structures as part of the Newton CDM system. CDM 503 is especially useful around low ceilings, stairs, narrow passages, reveals and other restricted areas where every millimetre matters. Its low unit weight also makes the roll practical to cut and position, although the complete 40m² roll remains substantial and must be handled safely.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eControlled Drainage Within The Newton CDM System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eCDM 503 works by controlling water rather than resisting hydrostatic pressure at the inner face of the structure. The studs create a depressurisation space that allows moisture or water entering through the background to move towards a designed collection route. At wall-to-floor junctions, Newton BaseDrain can receive water from behind the wall membrane; Newton FloorDrain can provide cross-floor drainage, collect water at construction joints or continue the route through door thresholds. Collected water must then reach a dependable gravity outlet or a correctly sized sump-and-pump arrangement. This drainage principle makes the system maintainable, but only when channels, sump covers and inspection points remain accessible. CDM 503 must never be treated as a standalone waterproof sheet or installed without a safe discharge strategy. Water-flow routes, outlet capacity, pump duty, redundancy, alarms and maintenance access must all be established by the waterproofing design before the membrane is concealed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eVersatile Protection For Walls, Floors And Vaulted Structures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe product-specific Newton data sheet confirms CDM 503 for earth-retained walls, suitable floors, tunnels and vaulted soffits. Wall substrates may include concrete, brick, concrete block and insulated concrete formwork when the correct longer fixings are specified. Suitable floor backgrounds include a concrete raft or slab and, within an approved build-up, Newton Fibran XPS 500-C closed-cell insulation. Concrete soffits must drain to a fall, while brick soffits should be arched or vaulted so water cannot pond behind the membrane. On walls, CDM 503 may be installed vertically or horizontally and protected by an independent frame, compatible metal lining, battens fixed into Newton MultiPlugs or an internal masonry lining. On floors it is laid with the studs down and protected by the specified screed, tongue-and-groove chipboard, supported timber floor, insulation system or underfloor-heating build-up. Every application must preserve an uninterrupted path to drainage.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable HDPE For Demanding Below-Ground Conditions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 503 is manufactured from chemically resistant HDPE and is designed to remain isolated from the damp or contaminated substrate throughout service. The technical data states that it is inert and non-polluting to drinking water, highly resistant to water, alkalis, saline solutions and organic acids, and unaffected by minerals and hydrocarbons. It is also rot-proof and resistant to bacteria, fungi and small organisms. Laboratory data records a unit weight of 0.5kg\/m², 0.6mm sheet thickness, tensile strengths of 416N in the machine direction and 488N across the sheet, resistance to static loading above 20kg and compressive strength of 250kN. These properties support its use behind protected wall finishes and beneath compatible floor build-ups. They do not remove the need for careful handling: punctures, crushed studs, poorly sealed butt joints, ultraviolet exposure or damage from later trades can compromise the installed system and must be prevented or repaired.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned For Grade 3 Internal Environments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Newton technical information states that CDM 503 is capable of helping to deliver all levels of internal environmental performance, including Grade 3, when it forms part of a correctly designed Newton CDM system. Grade 3 is a complete-system and building-environment outcome rather than a performance claim for the membrane alone. BS 8102:2022 requires the structure and waterproofing strategy to control anticipated ingress within the capacity of the cavity drainage system, while intended use of the space also determines requirements for heating, ventilation, humidity control and finishes. Basements intended for habitable use normally require mechanical ventilation or another specialist environmental-control design. The membrane, BaseDrain or FloorDrain layout, sump capacity, pump arrangement, discharge route, alarm provision, power-loss strategy and inspection access must therefore operate together. Appropriate waterproofing design, competent installation, pre-concealment testing and planned servicing are essential if the completed space is to achieve and retain its intended internal grade.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eLong-Term Protection With Flexible Finishing Options\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen specified, installed and protected in accordance with Newton’s data sheet and CDM installation manual, and permanently isolated from ultraviolet light, physical damage and wear, CDM 503 has a stated service life equal to the design life of the structure. Newton also provides a 30-year product warranty, while any installation or waterproofing guarantee is supplied separately by the specialist contractor. The membrane must always be covered by a suitable finish. Wall options include floor-supported dry-lining frames, compatible proprietary metal systems, treated timber battens fixed into Newton MultiPlugs, or a properly detailed internal brick or block lining. Suitable floor protection may include screed, tongue-and-groove chipboard, a supported timber floor, insulation with screed or chipboard above, or an underfloor-heating tray beneath screed. The chosen finish must protect the membrane from fire and impact, avoid uncontrolled penetrations, accommodate insulation and ventilation requirements, and leave drainage and pumping components accessible for inspection and maintenance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_1_1024x1024.png?v=1786715575\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Build-Up:\u003c\/strong\u003e The 3mm profile preserves valuable headroom and floor area, making it particularly suitable for low ceilings, stairs, narrow passages, reveals and restricted refurbishment details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eType C Water Management: \u003c\/strong\u003eCreates a controlled cavity that directs water towards the specified drainage system, helping relieve pressure while keeping internal finishes isolated from damp substrates.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Background Removal: \u003c\/strong\u003eAllows damp or salt-contaminated backgrounds to be isolated without unnecessarily extensive hacking off, provided loose, organic, unsafe and structurally unsuitable materials are removed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFast Mechanical Installation:\u003c\/strong\u003e Lightweight HDPE can be cut, positioned and mechanically fixed efficiently using the correct Newton plugs, OverTape and compatible detailing accessories.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Substrate Compatibility: \u003c\/strong\u003eSuitable for concrete, brick, blockwork, correctly detailed ICF walls, concrete rafts, slabs and approved arched, vaulted or falling soffit structures.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWall And Floor Use: \u003c\/strong\u003eA single 40m² roll format supports coordinated waterproofing across suitable walls, floors, tunnels and vaulted areas within a project-specific Newton CDM system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Chemical Resistance: \u003c\/strong\u003eResists water, alkalis, saline solutions, organic acids, minerals and hydrocarbons, helping maintain dependable separation from chemically contaminated below-ground backgrounds throughout its protected service life.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBiological Resistance: \u003c\/strong\u003eRot-proof HDPE resists bacteria, fungi and small organisms, reducing the risk of biological degradation when permanently protected behind the specified internal finish.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDocumented Performance: \u003c\/strong\u003ePasses EN 1928 at 60kPa for 24 hours, with stated tensile, static-load and compressive-strength results supporting confident specification within its tested scope.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certification: \u003c\/strong\u003eCovered by BBA Agrément Certificate 22\/6357 when specified and installed within the certified Newton system scope, providing independent technical assessment of key performance characteristics.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintainable Waterproofing: \u003c\/strong\u003eWorks with BaseDrain, FloorDrain, inspection access, sumps, pumps and alarms, creating a water-management system that can be tested, cleaned, monitored and routinely serviced.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Internal Finishes: \u003c\/strong\u003eCan be protected behind independent frames, treated battens, proprietary linings, internal masonry or compatible screed, chipboard, insulation and underfloor-heating build-ups.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong Service Life: \u003c\/strong\u003eHas a stated service life equal to the design life of the structure when correctly specified, installed, protected and isolated from ultraviolet exposure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e30-Year Product Warranty: \u003c\/strong\u003eSupported by Newton’s stated 30-year product warranty, while any separate installation or waterproofing guarantee remains the responsibility of the appointed specialist contractor.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing:\u003c\/strong\u003e Provides low-profile internal Type C protection to earth-retained walls and suitable floor slabs in domestic or commercial basements with designed drainage and discharge routes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions:\u003c\/strong\u003e Preserves headroom and usable floor area while separating new internal finishes from damp, salt-contaminated or water-affected masonry in properly drained cellar conversions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Walls: \u003c\/strong\u003eIsolates plasterboard, linings and other protected finishes from damp, saline or water-affected concrete, brick, blockwork and correctly detailed insulated concrete formwork.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConcrete Rafts And Slabs: \u003c\/strong\u003eSupports low-profile floor waterproofing within a fully drained, load-checked build-up designed to carry expected imposed loads and remove collected water safely.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Cellars:\u003c\/strong\u003e Provides internal cavity drainage to appropriately detailed arched or vaulted masonry where sealed overhead fixings prevent sagging and preserve continuous falls to drainage.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTunnels And Passages:\u003c\/strong\u003e Enables low-profile internal water management in underground corridors, tunnels and connecting passages where restricted clearances require a shallow membrane cavity.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlant And Utility Rooms:\u003c\/strong\u003e Protects internal finishes and service areas where maintainable drainage, accessible pumps, alarms and dependable discharge arrangements are incorporated into the waterproofing design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial Below-Ground Areas:\u003c\/strong\u003e Supports offices, archives, stores and service spaces requiring a project-specific internal environmental grade coordinated with ventilation, humidity control and planned system maintenance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefurbishment Projects: \u003c\/strong\u003eIsolates sound but damp, contaminated or uneven backgrounds while reducing the need for unnecessarily aggressive removal of existing masonry and cementitious finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRestricted Build-Ups: \u003c\/strong\u003eAccommodates stairs, door reveals, narrow corridors, low ceilings and other confined details where the 3mm profile offers a practical dimensional advantage over deeper cavity membranes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Agrément Certificate 22\/6357:\u003c\/strong\u003e Newton CDM 503 is covered by BBA Agrément Certificate 22\/6357 when specified and installed within the certified scope of the Newton CDM waterproofing system. This provides independent technical assessment of the system’s suitability, performance and durability.\u003cbr\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Design: \u003c\/strong\u003eCDM 503 is suitable for inclusion within a project-specific Type C drained cavity waterproofing design. BS 8102:2022 applies to the complete waterproofing strategy and does not make the membrane a standalone barrier against water pressure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 Internal Environment: \u003c\/strong\u003eA correctly designed, installed, ventilated and maintained Newton CDM system incorporating CDM 503 may contribute to Grade 3 conditions. The required grade depends on the structure, drainage, discharge, pumps, details, finishes, environmental controls and maintenance provisions working together.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS EN 13967:2012+A1:2017: \u003c\/strong\u003eCDM 503 is declared as a Type V damp-proof sheet under this harmonised technical specification. The supplied UKCA and CE declaration pages list the associated essential characteristics and declared performance values.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePublished Test And Classification Data: \u003c\/strong\u003eThe technical information records watertightness to EN 1928, tensile strength to BS EN 12311-2, static loading to BS 12730 and compressive strength to BS EN ISO 25619-2. Reaction to fire is classified as Class E in accordance with BS EN 13501-1.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWarranty And Design Life: \u003c\/strong\u003eNewton states a 30-year product warranty and service life equal to the design life of the structure when CDM 503 is correctly specified, installed, protected from damage and incorporated within a functioning cavity drain system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 503 works by maintaining a shallow studded cavity between the damp or water-bearing structure and the protected internal finish. Water entering through the background is allowed to move within this cavity towards BaseDrain, FloorDrain, a suitable gravity outlet or a sump chamber instead of becoming trapped behind plasterboard, flooring or decorative finishes. This managed-drainage principle defines a Type C waterproofing system and is particularly useful below ground, where water levels and hydrostatic conditions may change over time.\u003c\/p\u003e\n\u003cp\u003eThe 3mm profile minimises wall and floor build-up where headroom or usable space is restricted. This makes CDM 503 particularly useful around low ceilings, stairs, door details, narrow passages and floor build-ups that cannot readily accommodate a deeper membrane. The reduced cavity must remain clear and continuously drained, however, because mortar, drilling dust, lime deposits, silt or standing water can have a proportionally greater effect on its available drainage space.\u003c\/p\u003e\n\u003cp\u003eThe chemically resistant HDPE separates internal finishes from damp, salts and other substrate contamination. Published information describes CDM 503 as resistant to water, alkalis, saline solutions, organic acids, minerals and hydrocarbons, as well as rot, bacteria, fungi and small organisms. These characteristics help protect the internal build-up, but they do not remove the need to treat appropriate concrete against free-lime leaching or resolve hazardous contamination and structural defects before concealment.\u003c\/p\u003e\n\u003cp\u003eInstallation is practical and comparatively quick when carried out by an experienced Type C installer. CDM 503 can be fitted vertically or horizontally to walls, loose-laid stud-side down on suitable floors and installed to correctly detailed vaults or soffits. The sheet itself has no curing period, so follow-on work may begin after fixing, butt-joint sealing, drainage connection, inspection and testing are complete. Repair mortars, levelling products, screeds and other wet-applied materials must still reach the condition required by their own instructions.\u003c\/p\u003e\n\u003cp\u003ePublished performance includes watertightness at 60kPa for 24 hours, tensile strengths of 416N and 488N, resistance to static loading above 20kg and compressive strength stated as 250kN. The listed working temperature range is -50°C to +80°C. These figures support product specification within their stated test scope but do not replace project-specific assessment of structural loading, water volume, drainage capacity, floor construction, internal use or service conditions.\u003c\/p\u003e\n\u003cp\u003eFor the property owner, the principal benefit is the potential to convert damp or water-affected below-ground areas into dry, usable internal spaces within a maintainable system. Grade 3 performance is delivered by the complete design rather than CDM 503 alone. The structure, membrane, sealed details, channel layout, gravity or pumped discharge, alarms, power-loss strategy, ventilation, protected finishes, inspection access and planned servicing must continue to operate together throughout the installation’s life.\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm503-tech-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-newton-cdm503-tech-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-newton-cdm503-tech-table {\n    width: 100%;\n    min-width: 900px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-tech-table th,\n  .pc-newton-cdm503-tech-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm503-tech-table .pc-feature-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-newton-cdm503-tech-table-swipe {\n      display: block;\n    }\n\n    .pc-newton-cdm503-tech-table {\n      min-width: 820px;\n      font-size: 14px;\n    }\n\n    .pc-newton-cdm503-tech-table th,\n    .pc-newton-cdm503-tech-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-newton-cdm503-tech-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-newton-cdm503-tech-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-newton-cdm503-tech-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cp class=\"pc-newton-cdm503-tech-table-swipe\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"pc-newton-cdm503-tech-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-newton-cdm503-tech-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 36%;\"\u003e \u003ccol style=\"width: 18%;\"\u003e \u003ccol style=\"width: 22%;\"\u003e \u003ccol style=\"width: 24%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" colspan=\"2\" scope=\"col\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eResult\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eProduct Code\u003c\/th\u003e\n\u003ctd\u003eM5\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e0.5kg\/m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSheet Thickness\u003c\/th\u003e\n\u003ctd\u003e0.6mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Height\u003c\/th\u003e\n\u003ctd\u003e3mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Pattern\u003c\/th\u003e\n\u003ctd\u003eSquare\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eColour\u003c\/th\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eRoll Size\u003c\/th\u003e\n\u003ctd\u003e2m x 20m\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eNominal Roll Coverage\u003c\/th\u003e\n\u003ctd\u003e40m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWorking Temperature\u003c\/th\u003e\n\u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSoftening Temperature\u003c\/th\u003e\n\u003ctd\u003e126°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Machine Direction\u003c\/th\u003e\n\u003ctd\u003e416N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Cross Direction\u003c\/th\u003e\n\u003ctd\u003e488N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eResistance To Static Loading\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;20kg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eReaction To Fire\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eType Of Application\u003c\/th\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eProduct Warranty\u003c\/th\u003e\n\u003ctd\u003e30 years\u003c\/td\u003e\n\u003ctd\u003eManufacturer statement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eLife Expectancy\u003c\/th\u003e\n\u003ctd\u003eDesign life of the structure when correctly specified, installed and protected\u003c\/td\u003e\n\u003ctd\u003eManufacturer statement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eEssential Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eEssential Characteristic\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eHarmonised Technical Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eResistance To Tearing\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12310-1\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eElongation At 5%\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12311-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Creep \/ Resistance To Static Load\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 13967 Annex B\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eImpact Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12691-2 Method A\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Ageing\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Chemicals\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1926 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eFire Resistance\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eJoint Tensile Shear Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12317-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm503-ancillary-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-newton-cdm503-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-newton-cdm503-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-ancillary-table th,\n  .pc-newton-cdm503-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-product-cell,\n  .pc-newton-cdm503-ancillary-table .pc-product-cell a {\n    color: #111;\n    font-weight: 700;\n    text-align: left;\n  }\n\n  .pc-newton-cdm503-ancillary-table .pc-product-cell a {\n    text-decoration: underline;\n    text-underline-offset: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-newton-cdm503-ancillary-table-swipe {\n      display: block;\n    }\n\n    .pc-newton-cdm503-ancillary-table {\n      min-width: 720px;\n      font-size: 14px;\n    }\n\n    .pc-newton-cdm503-ancillary-table th,\n    .pc-newton-cdm503-ancillary-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-newton-cdm503-ancillary-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-newton-cdm503-ancillary-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-newton-cdm503-ancillary-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm503-ancillary-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-newton-cdm503-ancillary-table\" style=\"width: 127.96%; height: 2201.44px;\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 74%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr style=\"height: 26.441px;\"\u003e\n\u003cth class=\"pc-main-title\" colspan=\"2\" scope=\"colgroup\" style=\"height: 26.441px;\"\u003eNewton CDM 503 Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\" style=\"height: 21.5972px;\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplugs-cavity-drain-membrane-fixing-plugs-a1\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM MultiPlugs\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003ePrimary 10mm membrane fixing plugs for suitable wall substrates. Each plug includes a soft rubber sealing grommet and accepts a 5mm No.10 self-tapping screw for compatible battens or lining supports without creating another penetration through the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplug-pins-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM MultiPlug Pins\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eExpansion pins inserted into a MultiPlug where the initial substrate grip is insufficient. The pin expands the correctly positioned plug to improve its hold without abandoning the fixing point.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-nuseal-plugs-vaulted-ceiling-membrane-fixing-a2\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM NuSeal Plugs\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eSpecialist 11mm x 70mm fixing plugs for vaulted, curved, sloping and overhead applications. NuSeal Plugs are installed with a compressed ring of Newton CDM Rope instead of the standard rubber grommet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/evolution-fasteners-sds-drill-bits\" rel=\"noopener\" target=\"_blank\"\u003eEvolution SDS Plus Masonry Drill Bits\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003e10mm diameter SDS bit for Newton MultiPlug fixing holes. Drill depth and bit condition must suit the substrate and plug length. NuSeal Plugs require a separate suitable 11mm SDS bit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eSpecial Wall Ties And Retaining Clips\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eNewton-only restraint accessories used where an internal brick or block lining is tied back through compatible CDM fixing plugs, or where insulation requires retention without uncontrolled membrane penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\" style=\"height: 21.5972px;\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-overtape-butyl-membrane-sealing-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003ePVC-backed, single-sided waterproof tape used to seal CDM 503 butt joints. The technical drawing specifies 100mm OverTape centred over each clean, dry joint. It is also used at wall-to-floor interfaces, BaseDrain upstands, reveals, repairs and face-sealed details; 150mm tape may be required for selected details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-joint-tape-double-sided-butyl-membrane-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Joint Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eDouble-sided butyl tape used at compatible DPC joints, overlaps, patches and interfaces. CDM 503 has no flange, so Joint Tape is not the primary sheet-to-sheet jointing product; CDM 503 butt joints use Newton CDM OverTape.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Rope\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003e10mm compressible butyl rope for NuSeal Plugs, approved vaulted or overhead fixings, irregular joints, service penetrations, shaped details and repairs where flat tape cannot make continuous contact.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eNewton Pipe Collar, Pipe Sleeve Or Pipe Seal\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eSpecialist preformed components for pipes, grouped cables, conduits and other services passing through the membrane. Use a compatible size and a detail approved for the service and waterproofing design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eNewton DampSafe 809-HP DPC\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eHigh-load physical DPC used where waterproofing continuity passes through internal walls, block spine walls or other load-bearing details. An ordinary low-load DPC must not replace it where the design requires 809-HP load capacity.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003eDamp Proof Course Rolls\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eStocked sheet DPC for suitable non-high-load continuity, patch and selected penetration details. Confirm width, loading and compatibility before use; it is not an automatic substitute for Newton DampSafe 809-HP.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\" style=\"height: 21.5972px;\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003ePerimeter drainage channel installed at the wall-to-floor junction. It collects water from behind the wall membrane and at the structural junction, then directs it towards a safe gravity outlet or sump chamber. Supplied in 2m lengths.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM FloorDrain\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eFloor drainage channel used at construction joints, as cross-floor drainage, through door thresholds and to link perimeter drainage with a centrally located sump or other discharge route. Supplied in 2m lengths.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 37.7778px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 37.7778px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-corner\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain 90° Swept Corner\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 37.7778px;\"\u003ePreformed swept component for maintaining channel continuity around a 90° direction change while supporting water flow and future cleaning.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-t-piece\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain T-Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eFormed T-junction for connecting FloorDrain to BaseDrain at 90°, creating cross-floor routes or draining through a suitable engineering-brick detail where specified.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-flexible-jetting-eye\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain Flexible Jetting Eye\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eInspection and cleaning access inserted into BaseDrain so the installed channel can be flushed and maintained. Access spacing and location must follow the waterproofing design and remain reachable after finishes are installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 37.7778px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 37.7778px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-drainage-adaptor\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain Drainage Adaptor\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 37.7778px;\"\u003eAdaptor connecting BaseDrain or FloorDrain to 63mm pipe for onward connection to a suitable sump or dependable gravity drainage point.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-sump-pump-connector\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain Sump Connector\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003ePackaged connection comprising the drainage adaptor, 63mm flexible pipe and sump connector piece for linking Newton drainage channel to a compatible sump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain Jointing Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eDuct-style jointing tape for securing compatible BaseDrain and FloorDrain channel connections and fittings. It is a channel assembly product, not a substitute for CDM OverTape or Joint Tape on the waterproof membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eForms an 8mm gap between the wall membrane and drainage zone where the finished floor build-up is deeper than the BaseDrain upstand detail. It allows condensation running down the room-facing membrane surface to enter the drainage channel instead of pooling at the floor edge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003e50mm closed-cell XPS insulation with drainage slots beneath. Used as a tested insulated spacer adjacent to BaseDrain and FloorDrain, creating a drained supporting layer below a compatible floor membrane and load-checked floor finish.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003eBasement Sump And Pump Systems\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eSump chambers and pumps for mechanical removal where dependable gravity drainage is unavailable. Chamber volume, pump duty, head, flow, discharge diameter, redundancy and servicing provision must suit the project risk assessment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 37.7778px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 37.7778px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" rel=\"noopener\" target=\"_blank\"\u003eHigh-Water Level Alarms\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 37.7778px;\"\u003eAlarm systems providing early warning if water rises above the normal working level in a sump because of pump, power, float or discharge problems.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eBattery Back-Up, Secondary Pump And Telemetry Equipment\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eAdditional resilience for installations where loss of pumping could cause flooding or unacceptable damage. Equipment must be matched to the installed pump load, anticipated outage, likely inflow and consequence of failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eGullies, Gravity Outlets And Receiving Drainage\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eSuitable discharge points used where levels allow water to leave by gravity. The receiving drainage must accept the design flow and must not surcharge, freeze or return water towards the waterproofed structure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003eDischarge Pipework And Non-Return Valves\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003ePressure-rated pipework, fittings and valves carrying pumped water to the approved discharge point while limiting unwanted return flow when the pump stops. Dedicated discharges and required consents must be addressed by the design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\" style=\"height: 21.5972px;\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 21.5972px;\"\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\" style=\"height: 21.5972px;\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti-Lime Sealer\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eStocked anti-lime treatment for suitable new or existing concrete where free-lime leaching could produce deposits in the membrane cavity, BaseDrain, FloorDrain or sump. Use in accordance with its separate application instructions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-microtech-masonry-biocide\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Microtech Masonry Biocide\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eStocked masonry biocide for appropriate mould, fungal, moss or biological contamination after loose growth has been removed. Dry rot, wet rot and structurally affected timber require a separate specialist investigation and remedial specification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/fillet-seal-mortar\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Fillet Seal Mortar\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eRapid-curing, non-shrink cement-based mortar for suitable making good, local re-profiling and specified wall-to-floor or wall-to-wall fillet details. Use only where compatible with the substrate and waterproofing design, and allow it to reach the required condition before covering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/dampsolve-damp-proof-dpc-cream\" rel=\"noopener\" target=\"_blank\"\u003eDampSolve Damp Proof DPC Cream\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eStocked injection cream that may be specified above ground where a remedial chemical DPC is required to control avoidable rising damp. It does not replace the Type C cavity drainage system below ground and should not be added without diagnosing the moisture mechanism.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 75.5556px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 75.5556px;\"\u003eSuitable Levelling Or Repair Compound\u003c\/th\u003e\n\u003ctd style=\"height: 75.5556px;\"\u003eUsed to correct local floor irregularities or severe wall depressions so the membrane is supported and drainage remains free. The Newton manual gives Ardex Arditex NA as an example for floor levelling; confirm substrate, thickness, curing and water-exposure compatibility.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eTreated Timber Battens And End-Cut Treatment\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eBattens supporting plasterboard or sheeting where the selected lining uses the screw socket within Newton MultiPlugs. Timber must be appropriately treated, and all cut ends should receive a compatible end-cut preservative.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\" style=\"height: 56.6667px;\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\" style=\"height: 56.6667px;\"\u003eMechanical Ventilation And Humidity Control\u003c\/th\u003e\n\u003ctd style=\"height: 56.6667px;\"\u003eBuilding-services provision needed to control humidity, condensation and indoor air quality, particularly in Grade 3 or habitable below-ground spaces. Design is a specialist activity separate from the membrane installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 503 forms part of a specialist structural waterproofing system and should be designed and installed by competent people with suitable Type C cavity-drain experience. Newton recommends installation by trained Newton Specialist Contractors, and the BBA-certified system must be installed in accordance with the certificate, current Newton technical literature and the project waterproofing design.\u003c\/p\u003e\n\u003cp\u003eBefore beginning, read the current CDM 503 technical data sheet, Newton CDM installation manual, product instructions for every ancillary and the relevant risk assessments. Confirm the construction type, expected water conditions, drainage route, sump position, discharge point, internal grade, ventilation requirements, final finishes and future access before materials are fixed.\u003c\/p\u003e\n\u003cp\u003eWear appropriate PPE, including gloves, safety glasses and protective footwear. Use suitable dust control and respiratory protection where drilling or substrate preparation creates hazardous dust. Provide properly erected staging or scaffold for high walls, vaults and soffits. Do not work overhead from unstable steps or improvise access equipment.\u003c\/p\u003e\n\u003cp\u003eScan for concealed electrical cables, water services, gas pipes and structural hazards before drilling. Use a suitable 110V SDS hammer drill, sharp cutting knife and controlled heat gun. Keep heat away from combustible materials and do not overheat the HDPE or butyl tapes. Maintain good lighting and a tidy work area so rolls, tools and open drainage channels do not create trip hazards.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCDM 503 does not hold back hydrostatic pressure. The membrane and drainage channels form depressurisation spaces that receive water entering through known or potential weaknesses and direct it to controlled discharge. The structure should itself limit the rate of ingress so it does not exceed the cavity drain system’s capacity, as required by the design principles of BS 8102:2022.\u003c\/p\u003e\n\u003cp\u003eThe waterproofing designer must assess the construction type, retaining conditions, groundwater risk, permeability of the ground, likely entry points, slab levels, wall-to-floor junctions, construction joints, cracks, penetrations and the intended use of the finished space. New structures should not be designed to permit uncontrolled water entry merely because an internal drainage system is present.\u003c\/p\u003e\n\u003cp\u003eEvery part of the cavity must drain continuously. The wall membrane, floor membrane, BaseDrain, FloorDrain, condensation detail, sump chamber, pumps and discharge pipework must form one coordinated route. Avoid sealed pockets, channel backfalls, unconnected cavities and details that direct water onto a joint or trap it above an obstruction.\u003c\/p\u003e\n\u003cp\u003eWhere pumping is essential, consider the consequence of pump or power failure. Select duty and standby pumps, high-water alarms, battery back-up, independent circuits, telemetry and discharge arrangements according to the project risk. The outlet must terminate where water cannot surcharge or return towards the structure.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm503-substrates-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-newton-cdm503-substrates-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-newton-cdm503-substrates-table {\n    width: 100%;\n    min-width: 1000px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-substrates-table th,\n  .pc-newton-cdm503-substrates-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-area-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-plain-list {\n    margin: 0;\n    padding: 0;\n    list-style: none;\n  }\n\n  .pc-newton-cdm503-substrates-table .pc-plain-list li + li {\n    margin-top: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-newton-cdm503-substrates-table-swipe {\n      display: block;\n    }\n\n    .pc-newton-cdm503-substrates-table {\n      min-width: 900px;\n      font-size: 14px;\n    }\n\n    .pc-newton-cdm503-substrates-table th,\n    .pc-newton-cdm503-substrates-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-newton-cdm503-substrates-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-newton-cdm503-substrates-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm503-substrates-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-newton-cdm503-substrates-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 14%;\"\u003e \u003ccol style=\"width: 23%;\"\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 37%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003eNewton CDM 503 Membrane Suitable Substrates And Finishes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eApplication Area\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eSuitable Substrates\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eCompatible Protection Or Finish\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eKey Requirement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eWalls\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eConcrete.\u003c\/li\u003e\n\u003cli\u003eBrick masonry.\u003c\/li\u003e\n\u003cli\u003eConcrete blockwork.\u003c\/li\u003e\n\u003cli\u003eInsulated concrete formwork.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eFloor-supported independent dry-lining frame and plasterboard.\u003c\/li\u003e\n\u003cli\u003eCompatible proprietary metal lining system.\u003c\/li\u003e\n\u003cli\u003eTreated timber battens supporting plasterboard or suitable sheeting\u003c\/li\u003e\n\u003cli\u003eInternal brick or block lining.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eUse the correct specialist longer fixings with insulated concrete formwork. Fix battens into Newton MultiPlugs and provide appropriate restraint for masonry linings.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eFloors\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eConcrete raft.\u003c\/li\u003e\n\u003cli\u003eConcrete slab.\u003c\/li\u003e\n\u003cli\u003eNewton Fibran XPS 500-C within a compatible Newton CDM floor build-up.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eScreed.\u003c\/li\u003e\n\u003cli\u003eTongue-and-groove chipboard.\u003c\/li\u003e\n\u003cli\u003eSupported timber floor.\u003c\/li\u003e\n\u003cli\u003eInsulation with screed or tongue-and-groove chipboard above.\u003c\/li\u003e\n\u003cli\u003eUnderfloor-heating tray with screed above.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eCheck the complete build-up against the intended loading and protect CDM 503 without puncturing the floor membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eSoffits And Vaults\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eConcrete formed to a dependable fall.\u003c\/li\u003e\n\u003cli\u003eArched or vaulted brickwork.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eProject-specific protective lining or finish detailed for the soffit or vault.\u003c\/td\u003e\n\u003ctd\u003eMaintain a continuous fall to drainage, prevent ponding or membrane sagging and use the approved sealed overhead fixing detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eCDM 503 must be installed against a stable background capable of accepting the specified fixings and supporting the intended drainage and finishing build-up. Structural movement, active collapse, hazardous contamination and defective substrates requiring engineered repair must be addressed before the membrane system is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRemove all timber and organic materials that could decay behind the membrane, including skirting, timber grounds, plates, wallpaper, hessian, cardboard and debris. Investigate rot or infestation before concealment. Brush away visible mould or biological growth and apply an appropriate treatment such as Wykamol Microtech where the diagnosis and product instructions support its use.\u003c\/p\u003e\n\u003cp\u003eStrip loose, hollow, friable or unsafe finishes. CDM 503 does not require an unnecessarily smooth wall, but the background must accept secure fixings and must not contain projections capable of puncturing the sheet. Fill deep voids, open joints and severe depressions with a suitable repair mortar. Remove sharp snots and unstable masonry while retaining sound material wherever possible.\u003c\/p\u003e\n\u003cp\u003eLocate and repair active leaks, running water, defective services and structural defects in accordance with the waterproofing design. Rapid water entry may need temporary control before membrane installation. Do not assume that covering an active defect removes the need to manage the rate or source of ingress.\u003c\/p\u003e\n\u003cp\u003eOn floors, remove oil, dust, laitance, loose material and sharp projections. Fill holes and severe depressions. Establish the finished build-up, loading, membrane position, insulation, underfloor heating, screed or chipboard requirements before levelling begins. Floor preparation must support the drainage layout and the chosen finish rather than simply create a visually smooth surface.\u003c\/p\u003e\n\u003cp\u003eTreat appropriate new concrete with Wykamol Anti-Lime Sealer to reduce free-lime deposits that could restrict the cavity, channels or sump. Apply it to the areas and at the rate specified by its own instructions. Keep all membrane-jointing surfaces clean, dry and dust-free.\u003c\/p\u003e\n\u003cp\u003eThe performance of a Type C floor drainage system depends on the gradient and regularity of the slab or raft. Establish the datum at the slab height beside the drainage channel where it meets the sump chamber. The Newton manual states that deviation from this datum must not be more than -5mm at any point between the datum and the furthest extent of the waterproofing system.\u003c\/p\u003e\n\u003cp\u003eA positive deviation of up to +15mm may be acceptable only where it occurs at the furthest point from the datum and does not create an intermediate high or low area that strands water. The recommended local surface regularity is SR1 or better, equivalent to 3mm on a slip gauge.\u003c\/p\u003e\n\u003cp\u003eCheck departure from datum and surface regularity with a rotating laser and by flood testing. Water should travel towards the designed channel and sump without persistent puddles. Mark low points, reverse falls and high spots, then correct them by suitable planing, grinding or a compatible levelling compound. Repeat the test until the floor satisfies the approved drainage design.\u003c\/p\u003e\n\u003cp\u003eDo not use the membrane to hide an unsuitable slab. Standing water beneath CDM 503 may carry silt and lime, restrict the shallow cavity and reduce long-term drainage performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-421_1024x1024.webp?v=1783082714\" alt=\"Anti Lime Treatment\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cem\u003e\u003cstrong\u003e\u003cbr\u003eAnti-lime sealer being applied to prepared concrete before installation of Newton CDM 503 Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTypical installation tools include a good-quality 110V SDS hammer drill, 10mm masonry bits for Newton MultiPlugs, a suitable 11mm bit where NuSeal Plugs are specified, a mallet or club hammer, a sharp utility knife with spare blades, tape measure, long spirit level, clean lint-free rags and a soft roller or firm hand-pressure tool for consolidating OverTape. A rotating laser is particularly useful for setting out plug lines, checking slab levels and coordinating drainage falls.\u003c\/p\u003e\n\u003cp\u003eProvide suitable lighting, access equipment and task-specific PPE for basement, high-wall, vault and soffit work. Scan for concealed services before drilling and use appropriate dust control. A controlled 110V hot-air gun may assist surface drying and butyl-tape adhesion in cold conditions, but it must never overheat or distort the HDPE. Open flames must not be used, and all surfaces receiving OverTape, Joint Tape or CDM Rope must be clean, dry and free from dust, grease and condensation.\u003c\/p\u003e\n\u003cp\u003eThe principal system components normally include Newton MultiPlugs, MultiPlug Pins where required, NuSeal Plugs for approved overhead details, CDM OverTape, Joint Tape, CDM Rope, compatible DPC or penetration components, BaseDrain, FloorDrain, corners, T-pieces, drainage adaptors, sump connectors and Flexible Jetting Eyes. The complete system must also include a suitable gravity outlet or correctly selected sump-and-pump arrangement, together with alarms, back-up provision and discharge components where required by the design.\u003c\/p\u003e\n\u003cp\u003eDo not begin installation until the critical membrane, fixing, jointing and drainage products are available and the work sequence has been agreed. Unfinished joints, missing channel fittings, unavailable inspection points and temporary open drainage details are easily contaminated or damaged before the system is closed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlan BaseDrain around the wall-to-floor perimeter and identify every direction change, construction joint, threshold, cross-floor route, sump connection, gravity outlet and inspection point before cutting the slab or fixing membrane. Coordinate the layout with partitions, door openings, columns, services, insulation, screed depth and the final location of removable covers.\u003c\/p\u003e\n\u003cp\u003eUse Newton FloorDrain where the design must collect water at floor construction joints, continue beneath a door threshold or link perimeter drainage with a central sump. Use swept corners and T-pieces rather than sharp site-formed channel mitres. Connections must preserve the internal waterway and support later flushing.\u003c\/p\u003e\n\u003cp\u003eNewton’s estimating guidance gives a general rule of one inspection point for each continuous run up to a maximum of 10m, close to the next corner, with additional access adjacent to turns towards the sump and around obstructing columns. Provide at least one inspection point for each continuous drainage run of up to 10m, positioned close to the next corner, with additional access adjacent to turns towards the sump and around obstructing columns. Final locations and spacing must follow the project-specific waterproofing design.\u003c\/p\u003e\n\u003cp\u003eThe manual gives a broad rule of thumb of one sump per 50m of BaseDrain, but this is not a design guarantee. Water entry, ground conditions, slab level, pump duty, channel route, discharge head and consequence of failure may require more sumps or cross drainage.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-911_1024x1024.webp?v=1779715087\" alt=\"Newton 503 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cem\u003e\u003cstrong\u003e\u003cbr\u003eNewton CDM BaseDrain positioned at the wall-to-floor junction to collect water from behind the Newton CDM 503 Waterproof Membrane, with Newton CDM OverTape securing the channel to the Newton Condensation Strip and Newton CDM Fibran XPS 500-C Insulation beneath (via Newton CDM 503 Waterproof Membrane as a floor membrane). \u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eNewton BaseDrain And FloorDrain Preparation And Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eForm the channel recess or supporting arrangement to the current Newton detail and structural requirements. Do not assume a generic trench dimension is correct for every project. Protect reinforcement, services and the load-bearing slab, and obtain structural approval where cutting or excavation could affect the building.\u003c\/p\u003e\n\u003cp\u003ePrepare a sound, clean and correctly levelled bed. Remove loose aggregate, mortar, dust and sharp debris. Position BaseDrain at the wall-to-floor junction so its entry holes remain aligned with the membrane cavity and water can enter without passing into the internal floor build-up.\u003c\/p\u003e\n\u003cp\u003eDry-fit straight channels, swept corners, T-pieces, FloorDrain routes, drainage adaptors, sump connectors and jetting eyes. Secure compatible joints with Newton BaseDrain Jointing Tape where required by the component instructions. Do not use membrane sealing tape as a substitute for correct channel components.\u003c\/p\u003e\n\u003cp\u003eConnect BaseDrain or FloorDrain to the chosen sump using the specified Newton Drainage Adaptor or Sump Connector, or to a dependable gravity outlet designed to accept the flow. Maintain the required level and pipe capacity. Protect every open channel and sump entry from concrete, screed, plaster, drilling dust and construction debris.\u003c\/p\u003e\n\u003cp\u003eBefore concealment, flush or water-test every route. Confirm free flow at the sump or gravity outlet, inspect corners and T-pieces, and correct backfalls, obstructions or displaced joints. Install and commission pumps, non-return valves, alarms and back-up equipment before the drainage system becomes inaccessible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCDM 503 may be fixed vertically or horizontally. Horizontal installation can reduce cutting and the number of butt joints, but the full 2m x 20m roll is heavy and requires controlled handling. Vertical sheets are lighter and easier to offer up, but they create more joints and therefore use more OverTape. Select the orientation from the room geometry, wall height, access and joint layout.\u003c\/p\u003e\n\u003cp\u003eOffer the membrane to the wall with the studs facing the substrate. Set it level by eye, then drill through the centre of a stud near the top edge using the bit required for the chosen fixing. Drill beyond the plug length without enlarging the hole unnecessarily. Control dust so it does not collect in the cavity or drainage channel.\u003c\/p\u003e\n\u003cp\u003eInsert the Newton MultiPlug squarely and drive it until the rubber grommet is evenly compressed against the membrane. Do not crush the stud or distort the sheet. Level the membrane with a spirit or laser level and install a second fixing approximately 2m along the top. Continue the top line while checking level regularly, particularly around corners.\u003c\/p\u003e\n\u003cp\u003eFor vertical installation, hang each cut sheet accurately and bring the sheet edges together as a clean butt joint. CDM 503 has no flange. Clean and dry both faces, then centre 100mm Newton CDM OverTape over the joint, using its split backing to bond one half at a time. Apply firm continuous pressure and use controlled warm air when cold or residual surface moisture affects adhesion.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_5_1024x1024.png?v=1786715576\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_7_1024x1024.png?v=1786715575\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_6_1024x1024.png?v=1786715575\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOnce the membrane is hanging level, install the remaining plugs in straight horizontal and vertical lines. Fixing centres must suit the selected lining while accounting for substrate strength, membrane tension, sheet edges, corners, reveals and the approved project detail. Keep every fixing sealed and do not introduce additional penetrations simply to correct poor setting-out.\u003c\/p\u003e\n\u003cp\u003eNewton’s manual gives typical centres of 600mm vertically and 400mm horizontally for timber battens, and 800mm vertically and 600mm horizontally for fixed metal track systems such as Gypliner. Barrel vault guidance uses approximately 300mm centres around the curve and 600mm along its length, with additional restraint wherever required to prevent sagging. Restrained internal brick or block linings follow the number and position of the specified wall ties. Free-standing timber, metal or masonry linings do not require a fixed support grid, but the membrane still needs enough plugs to remain neat, reasonably tight and secure at corners and reveals.\u003c\/p\u003e\n\u003cp\u003eUse Newton MultiPlugs with their supplied rubber sealing grommets for compatible vertical wall applications. Drill a clean 10mm hole through the centre of the selected stud, remove loose dust and insert the plug squarely. If a correctly located fixing has insufficient grip, install a Newton MultiPlug Pin in accordance with the plug instructions to expand and tighten it without abandoning the penetration.\u003c\/p\u003e\n\u003cp\u003eFor vaulted, curved, sloping or overhead areas, use Newton NuSeal Plugs or the fixing detail specifically approved by Newton. NuSeal Plugs require an 11mm hole and a complete ring of Newton CDM Rope compressed evenly between the fixing and membrane. Where the approved detail uses a MultiPlug overhead, remove the standard rubber grommet and form the seal with CDM Rope; do not rely on a grommet that cannot seat evenly against the curved surface.\u003c\/p\u003e\n\u003cp\u003eWhere treated timber battens are specified, Newton recommends a minimum section of 25mm x 38mm, although 25mm x 50mm can improve support at plasterboard edges. Fix battens into the screw socket of installed MultiPlugs using 5mm No.10 self-tapping screws. The plug accepts approximately 30mm of screw, so calculate length from the batten thickness and prevent the tip reaching beyond the plug. Treat cut ends, support every board edge and use board screws that cannot pass through the batten into the membrane.\u003c\/p\u003e\n\u003cp\u003eIndependent timber or metal frames can reduce membrane penetrations and provide space for insulation. Compatible proprietary metal linings and internal brick or block linings require their own approved restraint, fire, loading and condensation details. If a fixing hole is drilled incorrectly or fails, clean the stud, fill it with CDM Rope, over-seal it with CDM OverTape and relocate the fixing into sound substrate.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_2_1024x1024.png?v=1786715576\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cem\u003e\u003cstrong\u003e\u003cbr\u003eNewton MultiPlugs fixing Newton 503 to the wall, with fixing centres set to suit the internal finish, typically 600mm vertically and 400mm horizontally for timber battens.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing And Sealing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCDM 503 does not have a flat jointing flange. Adjacent sheets are therefore brought together edge to edge to form a butt joint, then sealed on the dry-side face with 100mm Newton CDM OverTape. Do not describe or install this as an 8mm membrane flange joint.\u003c\/p\u003e\n\u003cp\u003eCut each sheet squarely and arrange it so water behind the membrane can continue towards drainage without meeting an upturned edge or sealed pocket. Bring the edges into close contact without forcing one sheet over the other. The two faces must be clean, dry and free from dust, anti-lime residue, moisture and grease.\u003c\/p\u003e\n\u003cp\u003eAlign the OverTape centrally so approximately equal width bonds to each sheet. Use the split release liner to attach one side first, keeping the tape straight and free from creases. Remove the second half gradually while pressing it onto the adjoining sheet. Consolidate the entire width with firm hand or roller pressure, paying particular attention to intersections and terminations.\u003c\/p\u003e\n\u003cp\u003eUse a controlled hot air gun to dry and gently warm the membrane and tape in cold or damp conditions. Do not scorch, soften or distort the HDPE. At corners, crossings or irregular terminations, use an approved combination of OverTape, Joint Tape, CDM Rope and compatible patches to maintain continuity.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_4_1024x1024.png?v=1786715576\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall-To-Floor Junction And BaseDrain Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe wall-to-floor junction is a primary water-entry location and must be detailed as part of the drainage design. Position CDM 503 so water from behind the wall sheet can enter Newton BaseDrain without crossing into the finished room. Keep the channel entry holes and cavity path open; do not seal the membrane in a way that blocks the intended drainage route.\u003c\/p\u003e\n\u003cp\u003eWhere a floor membrane is used, link it to the wall membrane and the BaseDrain upstand with Newton CDM OverTape in accordance with the current project drawing. The tape must provide waterproofing continuity while preserving the route from the wall cavity into the channel.\u003c\/p\u003e\n\u003cp\u003eIf the finished floor build-up extends above the effective BaseDrain upstand and could prevent condensation on the room-facing membrane surface from entering the channel, install Newton CDM Condensation Strip to maintain an 8mm collection gap. Keep this gap open unless a specialist design requires it to be sealed, such as a correctly designed gas-protection system.\u003c\/p\u003e\n\u003cp\u003eDo not bridge the condensation gap with plaster, adhesive, screed, skirting compound or sealant. Provide mechanical ventilation and humidity control; the strip is a secondary collection detail and is not a substitute for controlling condensation within the completed space.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-911_1024x1024.webp?v=1779715087\" alt=\"Newton CDM 503 Membrane Basedrain Detail\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eConfirm that CDM 503 is the membrane selected by the approved Newton floor specification and that its stated 250kN compressive strength is adequate for the full long-term loading. Check the slab, drainage, insulation, screed, chipboard, underfloor heating and final finish as one build-up. Where loading exceeds the permitted system capacity, obtain Newton’s technical advice before installation.\u003c\/p\u003e\n\u003cp\u003eStarting at one side, unroll the membrane with its studs facing down and cut it to the room perimeter without dragging it over sharp debris. Allow for columns, thresholds, DPC connections, sump covers and services. Work from clean protected areas so traffic does not damage or contaminate completed joints.\u003c\/p\u003e\n\u003cp\u003eBring successive sheets together as butt joints. Clean and dry the faces, then seal each joint with 100mm Newton CDM OverTape using the split backing. Apply firm pressure across the full tape width. Warm the surfaces cautiously when conditions require it.\u003c\/p\u003e\n\u003cp\u003eSeal the floor membrane to the BaseDrain upstand, wall membrane or Condensation Strip using the specified OverTape detail. Join compatible horizontal DPCs with Newton Joint Tape where the design requires it. Avoid floor penetrations wherever possible; no fixings may pass through the installed floor membrane.\u003c\/p\u003e\n\u003cp\u003eProtect the finished membrane immediately with the specified screed, tongue-and-groove chipboard, supported timber floor, insulation system or heating build-up. Keep sump covers and inspection points accessible and provide the required expansion gap around timber flooring.\u003c\/p\u003e\n\u003cp\u003eNewton Fibran XPS 500-C may form a 50mm insulated drainage spacer beneath a compatible floor membrane. The boards incorporate purpose-designed underside slots that work with BaseDrain and FloorDrain to create a drained supporting layer. Use the boards only within a Newton-approved build-up and confirm the long-term load capacity for the proposed floor use.\u003c\/p\u003e\n\u003cp\u003ePrepare and test the slab before laying insulation. Position BaseDrain and FloorDrain so the board slots remain hydraulically connected to the drainage route. Lay the XPS boards closely with their drainage face in the specified orientation, maintaining continuity at board edges, channels and sump connections. Avoid blocking the slots with mortar, levelling compound, foam or debris.\u003c\/p\u003e\n\u003cp\u003eLay CDM 503 above the boards only where this arrangement is included in the approved design and the loading data supports it. Form the floor membrane butt joints with CDM OverTape, then install the specified overlay without puncturing the membrane.\u003c\/p\u003e\n\u003cp\u003eDo not assume the 500kPa board rating alone proves the complete floor build-up. Point loads, partitions, storage systems, plant, screed thickness, board joints, long-term creep and imposed loading must all be checked. Seek Newton’s technical advice where the calculated load or floor use is outside standard guidance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_3_1024x1024.png?v=1786715577\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_8_Floor_1024x1024.png?v=1786715575\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe CDM 503 product-specific data sheet lists vaulted soffits as a suitable application, while the general CDM manual’s worked vault section illustrates deeper Newton membranes. CDM 503 vault work should therefore follow a current product-specific Newton drawing or written technical specification rather than assuming every illustrated 8mm detail transfers unchanged.\u003c\/p\u003e\n\u003cp\u003eArched or vaulted membrane must be laid so water drains towards the designed collection route and cannot pond at laps, fixings or low pockets. Survey the curve, plan sheet sizes and joint positions, and hold the membrane tightly against the substrate without bridging, excessive tension, deep creasing or sagging.\u003c\/p\u003e\n\u003cp\u003eUse NuSeal Plugs with CDM Rope, or MultiPlugs with the standard washer removed and a CDM Rope seal, as approved for the detail. Keep fixings aligned for later battens and use enough to prevent any sagging. On a barrel vault, the manual gives typical centres of 300mm around the arch and 600mm along its length.\u003c\/p\u003e\n\u003cp\u003eRe-site overhead services to the dry side or to a vertical surface wherever practicable. Where a penetration is unavoidable, group services and use a compatible Newton pipe sleeve, collar, CDM Rope and OverTape detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat concrete soffits are specialist inverted cavity-drain applications under BS 8102:2022 because any inadequate fall, membrane sagging or low pocket can retain water, contaminate the cavity and load the fixings. The CDM 503 data sheet states that the membrane should not be applied to a flat soffit unless the soffit is at least 400mm narrower than the membrane being used, and then only by very experienced contractors.\u003c\/p\u003e\n\u003cp\u003eWhere that restriction and the required drainage fall cannot be satisfied, specify another waterproofing approach. Even on an accepted detail, the membrane must be held tightly, all fixing points must be separately sealed and the full cavity must drain without ponding towards the designed collection route.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlan reveals before cutting the main sheets. Continue the membrane around the opening wherever the geometry permits, maintaining drainage and avoiding small unsupported strips. At a vaulted end wall with a door, the Newton manual describes a separate section around the head lapped approximately 100mm down the sides before the adjacent wall membrane wraps into the reveal.\u003c\/p\u003e\n\u003cp\u003eUse CDM OverTape to seal the small gap that can form at the angled corner of a reveal. Where the 3mm studded sheet cannot sit neatly through a narrow detail, Newton DampSafe 601 Slimline or another approved flat DPC-style membrane may be specified and joined to CDM 503 with the correct Newton tapes.\u003c\/p\u003e\n\u003cp\u003eAt internal and external corners, avoid stretching the HDPE or crushing the studs. Make controlled cuts only where required by the approved detail, use as few cuts as possible and seal every cut beyond its termination. Reinforce complex three-dimensional intersections with an approved patch and sufficient OverTape or compressed CDM Rope.\u003c\/p\u003e\n\u003cp\u003eDo not use general-purpose building tape, silicone or foam as the primary waterproof joint. Keep all butyl bonding surfaces clean and dry and ensure repairs remain visible for inspection before finishes are applied.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Newton CDM 503\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAvoid penetrations through retaining walls, floor slabs and the membrane whenever services can be routed on the dry side. Unnecessary slab penetrations also create new routes for groundwater entry. Coordinate pipes, cables, ducts and conduits before the membrane is installed, grouping them where practical.\u003c\/p\u003e\n\u003cp\u003eWhere a service must pass through CDM 503, trim the sheet neatly and use the approved Newton detail. CDM Rope can be shaped and compressed around the service, while CDM OverTape bridges the surrounding membrane. A compatible DPC patch may be placed over the detail, sealed to the service with CDM Rope and to the main membrane with Joint Tape or OverTape as specified.\u003c\/p\u003e\n\u003cp\u003eUse a proprietary Newton Pipe Collar, Pipe Sleeve or Pipe Seal where its size and service compatibility provide a more controlled detail. The seal must remain secure against movement, vibration, temperature change and later maintenance of the service.\u003c\/p\u003e\n\u003cp\u003eNever rely on a loose tape wrap or uncompressed rope. Inspect the entire circumference, test the seal where practicable and photograph the completed penetration before it is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Newton CDM 503 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProtect CDM 503 as soon as fixing, jointing and inspection are complete. On walls, protection may be provided by an independent lining, framed dry lining, correctly fixed treated battens and boards, a compatible proprietary lining system or a properly restrained internal brick or block wall. On floors, use the specified screed, tongue-and-groove chipboard, supported timber floor, insulation system or underfloor-heating build-up without puncturing the membrane.\u003c\/p\u003e\n\u003cp\u003eTell every follow-on trade that the waterproof membrane must not be drilled, nailed or screwed through. Use the screw sockets within correctly installed MultiPlugs for approved secondary fixings and select screw lengths that cannot extend beyond the plug. Clearly mark membrane positions, drainage routes, sumps, complex details and no-fix zones before the system is covered.\u003c\/p\u003e\n\u003cp\u003eKeep board corners, reinforcement, sharp tools, rubble, heavy point loads and uncontrolled site traffic away from unprotected CDM 503. Do not drag materials across floor membrane. Where temporary protection is removed, reinspect the exposed area and complete any repair before installing the permanent finish.\u003c\/p\u003e\n\u003cp\u003eProtect stored and installed membrane from ultraviolet exposure, excessive heat, open flames and impact. CDM 503 is designed to remain enclosed within the building build-up and must not be left as the exposed internal finish.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWaterproofing below-ground space does not by itself create a suitable internal environment. Basements often have limited natural ventilation, while insulation can reduce heat reaching the membrane face and increase the likelihood of a surface falling below dew point. The result may be condensation on the dry-side face even when the Type C waterproofing is performing correctly.\u003c\/p\u003e\n\u003cp\u003eDesign ventilation to the Building Regulations and the intended use of the room. Grade 3 environments require ventilation, dehumidification or air conditioning appropriate to that use, and BS 8102:2022 identifies this as a specialist activity. Bathrooms, kitchens, utility spaces and occupied rooms need controlled extraction and replacement air.\u003c\/p\u003e\n\u003cp\u003eBaseDrain’s rear spacers can allow condensation reaching the wall base to enter the channel. Where the floor build-up is deeper than the BaseDrain upstand, use Newton CDM Condensation Strip to continue this path. Leave the gap open unless the design requires a seal and provides dependable ventilation at all times.\u003c\/p\u003e\n\u003cp\u003eCommission ventilation before occupation and provide the owner with controls, filters and service intervals. Condensation strip and drainage access are safeguards, not substitutes for maintaining temperature, airflow and relative humidity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspect the complete membrane before any frame, board, insulation, screed or flooring conceals it. Check for cuts, punctures, crushed studs, loose fixings, distorted grommets, unsealed holes, sagging, bridged drainage paths and contamination. Repair every defect immediately.\u003c\/p\u003e\n\u003cp\u003eExamine every CDM 503 butt joint. Confirm the sheet edges meet correctly and that 100mm CDM OverTape is centred, wrinkle-free and fully bonded. Check ends, corners and tape crossings for continuous adhesion. Inspect every Joint Tape, CDM Rope, DPC, reveal, patch and service penetration separately.\u003c\/p\u003e\n\u003cp\u003eConfirm that MultiPlugs are secure and their rubber seals are evenly seated. For vaults and soffits, verify that NuSeal or modified MultiPlug details have complete compressed CDM Rope seals and that the sheet is held tightly without ponding pockets.\u003c\/p\u003e\n\u003cp\u003eInspect BaseDrain and FloorDrain positions, levels, corners, T-pieces, adaptors, sump connections and jetting eyes. Remove all debris and flush each run to demonstrate free flow. Test pumps, floats, non-return valves, alarms, back-up systems and discharge capacity.\u003c\/p\u003e\n\u003cp\u003eRecord the inspection with photographs and as-built drawings. Mark sump covers, access points, drainage routes and no-fix zones. Do not authorise finishes until all defects are closed and the water-management system has passed its specified checks.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Newton CDM 503\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eClean and dry every repair area. If a stud is drilled incorrectly, fill it with compressed CDM Rope and cover it with a small patch of CDM OverTape. Apply the same repair where a plug fails to grip even after the approved expansion pin is considered, then relocate the fixing into sound substrate.\u003c\/p\u003e\n\u003cp\u003eFor a clean cut or puncture on a wall, bridge the damage with CDM OverTape, extending the tape at least 25mm beyond both ends and all edges. Ragged tears require the same principle, but trim only unstable loose material and ensure the patch bonds to sound clean membrane.\u003c\/p\u003e\n\u003cp\u003eSmall holes may be covered by a single piece of OverTape with at least a 25mm sound margin. For larger damage, cut a CDM 503 patch that extends well beyond the defect. Butt or closely fit the patch as the approved detail requires, then seal its complete perimeter with CDM OverTape. Use CDM Rope beneath irregular areas only where specified and properly compressed.\u003c\/p\u003e\n\u003cp\u003eRepairs to floors and vaulted or overhead membrane must always use CDM OverTape to bridge and seal the damage. Use gentle warm air if necessary to remove surface moisture and improve adhesion, taking care not to distort the sheet.\u003c\/p\u003e\n\u003cp\u003eWhere damage is extensive or multiple repairs would be difficult to inspect, replace the affected membrane section. Re-test drainage and joint continuity before finishes are reinstated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCDM 503 itself normally requires little routine attention once correctly protected, but the drainage, pumping, alarm, discharge and ventilation systems remain serviceable building components. The owner must receive a clear maintenance schedule and understand that loss of drainage or power can affect the waterproofed space.\u003c\/p\u003e\n\u003cp\u003eNewton’s manual requires competent maintenance of pumps and drainage at least once each year as a minimum. The service should include cleaning and de-scaling the sump, checking free impeller movement, pump seals, discharge pipes, non-return valves, floats, electrical connections and fuses, and removing debris from the chamber.\u003c\/p\u003e\n\u003cp\u003eFlush BaseDrain and FloorDrain through the accessible jetting eyes. Confirm that water reaches the sump or gravity outlet freely and that no lime, silt or construction debris restricts flow. Test each pump, high-water alarm, battery back-up and telemetry function under controlled conditions.\u003c\/p\u003e\n\u003cp\u003eKeep sump lids, jetting eyes and other access points visible, documented and removable. Do not bury them beneath permanent flooring or fitted furniture. Maintain mechanical ventilation, replace filters and verify humidity control.\u003c\/p\u003e\n\u003cp\u003eLater alterations must not penetrate CDM 503 or obstruct drainage without a reviewed waterproofing detail. Before installing shelving, kitchens, sanitary fittings, skirtings, partitions, floor anchors or new services, consult the original specialist contractor. Provide the owner with certificates, warranties, test results, photographs, as-built drawings and emergency contact information.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eNewton CDM 503 is one component of a Type C cavity drain system and must not be treated as a standalone barrier capable of resisting hydrostatic pressure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater behind or beneath the membrane requires a continuous route to BaseDrain, FloorDrain, a dependable gravity outlet or a correctly specified sump-and-pump arrangement.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCDM 503 alone does not guarantee a Grade 3 environment. The structure, waterproofing design, drainage, discharge, pumps, ventilation, finishes, inspection and maintenance determine the completed result.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlat soffits are specialist inverted cavity-drain applications. Apply the product-specific width restriction, provide dependable fall, prevent sagging and use only very experienced installers working to an approved detail.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFloor slabs and rafts must satisfy the required level, regularity and drainage criteria. Standing water beneath the shallow 3mm cavity can increase silt and lime-scale blockage risk.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCDM 503 is non-meshed and must not receive direct plaster or render. Use an appropriate protected lining or specify CDM 503 Mesh where a suitable keyed finish is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not use ordinary fixing penetrations through floor membrane. Every unavoidable service penetration requires a designed, compatible and inspectable seal.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCDM 503 is not a ground-gas barrier. Where radon, methane or another gas risk exists, specify a suitable certified Newton gas-protection system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eForm CDM 503 sheet joints as butt joints sealed with centred 100mm Newton CDM OverTape. Joint Tape is not the primary sheet-to-sheet joint for this non-flanged membrane.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeep OverTape, Joint Tape and CDM Rope bonding surfaces clean and dry. Butyl seals will not perform reliably over dust, grease, condensation, standing water or loose material.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not conceal damaged membrane, incomplete joints, displaced drainage channels, untested pumps or inaccessible maintenance points. Inspect and test the system before finishes are installed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtect CDM 503 from ultraviolet exposure, sharp objects, impact, excessive heat and open flames, and prevent later screws, brackets, services or floor fixings puncturing the waterproof layer.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStorage And Shelf Life\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eStore Newton CDM 503 rolls upright in dry conditions between 5°C and 25°C. Keep the 2m x 20m rolls under cover and protect them from direct sunlight, freezing conditions, excessive heat, ignition sources, sharp objects, crushing and physical damage. Keep tapes and other sealing accessories clean, dry and within the storage conditions stated in their individual product instructions.\u003c\/p\u003e\n\u003cp\u003eThe membrane must remain permanently protected from ultraviolet exposure, fire, impact and wear after installation. Newton states a 30-year product warranty and a service life equal to the design life of the structure when CDM 503 is correctly specified, installed and protected. This in-service durability statement does not permit indefinite exposed storage; inspect every roll before use and reject damaged, distorted or contaminated sections.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 503 is manufactured from white HDPE and supplied under product code M5 as a 2m x 20m roll with a nominal gross area of 40m². The technical data lists a unit weight of 0.5kg\/m², 0.6mm sheet thickness and 3mm round-stud profile. Actual project coverage must allow for cuts, junctions, details and waste.\u003c\/p\u003e\n\u003cp\u003eThe membrane passes watertightness testing at 60kPa for 24 hours to EN 1928. Published tensile strength is 416N in the machine direction and 488N in the cross direction to BS EN 12311-2. Resistance to static loading is greater than 20kg to BS 12730, and compressive strength is stated as 250kN to BS EN ISO 25619-2.\u003c\/p\u003e\n\u003cp\u003eThe listed working temperature range is -50°C to +80°C and the softening temperature is 126°C. CDM 503 is declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017 and is covered by BBA Agrément Certificate 22\/6357 within its stated scope.\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Newton CDM 503 Cavity Drain Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is a white, high-density polyethylene cavity-drain membrane with a low-profile 3mm stud design. It is used as part of an internal Type C waterproofing system on suitable walls, floors, tunnels and vaulted soffits. The membrane separates plasterboard, flooring and decorative finishes from damp, salt-contaminated or water-affected substrates while creating a shallow route through which incoming moisture can travel towards drainage. It is particularly useful where headroom, floor build-up or internal wall space is restricted. CDM 503 is not a liquid coating or self-contained tanking barrier; it must be correctly jointed, protected and connected to a project-specific drainage and discharge arrangement.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Newton CDM 503 work within a Type C waterproofing system?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 controls water after it passes through the retaining structure rather than attempting to resist all hydrostatic pressure at the internal face. Its studs hold the sheet away from the background, forming a depressurisation cavity through which moisture can move. At the wall-to-floor junction, water is normally collected by Newton BaseDrain, while FloorDrain can provide cross-floor drainage or serve construction joints and thresholds. The collected water then leaves through a dependable gravity outlet or correctly sized sump-and-pump system. This managed-drainage method is known as Type C protection. Reliable performance requires uninterrupted cavities, sealed joints, adequate channel capacity, safe discharge, accessible inspection points and continuing maintenance throughout the installation’s working life.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why does Newton CDM 503 have a 3mm studded profile?\u003c\/h3\u003e\n\u003cp\u003eA) The 3mm round-stud profile creates a useful drainage cavity while minimising the space occupied by the waterproofing layer. This makes Newton CDM 503 valuable beneath low ceilings, around stairs and reveals, within narrow passages and wherever a deeper membrane would reduce usable room dimensions or complicate floor levels. Its shallow build-up can also help coordinate insulation, screed, underfloor heating and threshold details. However, the reduced cavity requires particularly careful preparation and drainage. Mortar, drilling dust, free-lime deposits, silt or standing water can have a proportionally greater effect on a 3mm route than on a deeper cavity. Floors must therefore drain correctly, joints must remain neat and channels must stay accessible for inspection and cleaning.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What roll size and coverage does Newton CDM 503 provide?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is supplied as a 2m-wide by 20m-long roll, giving a nominal gross area of 40m². This figure describes the full sheet area before allowance is made for cutting, corners, junctions, openings, repairs, service penetrations and reasonable waste. Because CDM 503 sheets meet as butt joints rather than overlapping flanged joints, normal jointing does not consume a broad membrane overlap, although accurate cutting remains essential. Measure every receiving wall, floor, reveal, return, column and vaulted section, then prepare a sheet layout before ordering. Calculate 100mm OverTape, plugs, drainage components and detailing accessories separately, because they are not included merely by purchasing the membrane roll and their quantities depend on the project geometry.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main advantages of Newton CDM 503 over a deeper membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503’s principal advantage is its shallow 3mm profile, which preserves headroom, floor levels and internal wall space where every millimetre matters. The lightweight HDPE is practical to cut and position, requires no curing period and can isolate suitable damp or salt-contaminated substrates without unnecessarily removing all sound masonry. It can be used on walls, appropriate floors, tunnels and correctly detailed vaulted structures within one coordinated Newton CDM system. Published data also identifies strong resistance to water, chemicals, rot and biological attack. A deeper membrane may nevertheless offer greater drainage space in some circumstances. Product choice should therefore follow the anticipated water flow, slab regularity, loading, finishing build-up and project-specific waterproofing design rather than minimum thickness alone.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where can Newton CDM 503 Waterproof Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 can be used in domestic and commercial basements, cellar conversions, underground passages, tunnels, plant rooms, earth-retained walls and correctly detailed vaulted areas. Suitable applications include damp or saline masonry, water-affected concrete, low ceiling zones, narrow routes and refurbishment projects where internal dimensions need to be preserved. The product data also supports installation on appropriate concrete rafts and slabs within a designed, load-checked floor build-up. Concrete soffits require dependable drainage falls, while brick soffits should be arched or vaulted so water cannot pond behind the membrane. Every application must connect continuously to BaseDrain, FloorDrain, a secure gravity outlet or a specified pumping arrangement and must remain protected by a compatible internal finish.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 503 be installed on both walls and floors?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is suitable for walls and floors, but each application requires a different installation and protection arrangement. On walls, the studs face the substrate and the membrane is mechanically secured with sealed Newton MultiPlugs or another approved fixing. It may be hung vertically or horizontally and covered by an independent frame, compatible lining, treated battens or internal masonry. On floors, CDM 503 is loose-laid with the studs facing down, and adjoining sheets are butt-jointed with 100mm Newton CDM OverTape. The finished floor requires a compatible, load-spreading construction such as screed, tongue-and-groove chipboard, supported timber flooring, insulation or an approved underfloor-heating build-up. No ordinary fixings may puncture the floor membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 503 help create a habitable or Grade 3 basement?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 can contribute to a complete system designed for Grade 3 conditions, where dampness and water penetration are unacceptable, as commonly required in habitable basements. The membrane keeps finishes separate from the affected structure and directs incoming water towards controlled drainage. It cannot guarantee Grade 3 performance on its own. The outcome depends on the structure, anticipated ingress, sealed details, BaseDrain and FloorDrain capacity, gravity or pumped discharge, alarms, power-loss strategy, ventilation, finishes and maintenance. Habitable spaces also need appropriate heating, insulation, humidity control, fire precautions and compliance with Building Regulations. A waterproofing design specialist should coordinate these matters under BS 8102:2022, particularly on complex, high-risk or mechanically pumped projects.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which substrates are suitable for Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Suitable wall substrates include stable concrete, brick masonry, concrete blockwork and correctly detailed insulated concrete formwork, although ICF construction requires the specified longer fixings. Suitable floor backgrounds include a concrete raft, concrete slab and Newton Fibran XPS 500-C where it forms part of an approved Newton CDM build-up. Soffit applications may use concrete formed to a dependable fall or arched and vaulted brickwork. The substrate must be stable, capable of accepting the selected fixings and compatible with the drainage and finishing construction. Loose finishes, severe depressions, sharp projections and unstable masonry require removal or repair. Structural movement, collapse, hazardous contamination, running water or defective construction must be properly assessed and treated rather than simply concealed behind the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should walls and floors be prepared before installing CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Remove timber, wallpaper, hessian, cardboard and other organic material that could decay behind the membrane. Investigate rot or infestation, brush away biological growth and apply an appropriate treatment where the diagnosis supports it. Strip loose, hollow, friable or unsafe finishes while retaining sound masonry wherever practical. Fill deep voids, open joints and severe depressions, and remove projections capable of puncturing the sheet. Floors should be cleaned of oil, dust, laitance, loose particles and sharp debris. Repair active leaks, running water and structural defects in accordance with the waterproofing design. Suitable new concrete may require anti-lime treatment to limit deposits within the shallow cavity, drainage channels and sump. Keep every surface receiving tape or rope clean and dry.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How level must a floor be before Newton CDM 503 is installed?\u003c\/h3\u003e\n\u003cp\u003eA) Floor gradient and regularity are especially important because the 3mm cavity must not retain standing water. The Newton guidance establishes a datum at slab level beside the drainage channel where it meets the sump. Deviation should not exceed minus 5mm anywhere between this point and the furthest extent of the waterproofing system. A positive deviation of up to 15mm may be acceptable only at the furthest point, provided no intermediate high or low areas strand water. Recommended local regularity is SR1 or better, equivalent to 3mm on a slip gauge. Check levels with a rotating laser and flood testing, correct low points or reverse falls, and repeat testing before membrane or insulation conceals the slab.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Newton CDM 503 installed on a wall?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 may be fitted vertically or horizontally with its studs facing the substrate. Plan sheet orientation, butt-joint positions, plug rows, BaseDrain termination and the final lining before cutting. Offer the sheet to the wall, drill through the centre of a stud using the bit required for the approved fixing and control dust so it cannot enter the cavity or channel. Insert each MultiPlug squarely and drive it until its rubber grommet is evenly compressed without crushing the stud. Level the membrane with a spirit or laser level, secure the top line and complete the remaining fixing pattern. Bring adjacent sheet edges together accurately, seal every butt joint with centred 100mm CDM OverTape and inspect before concealment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which fixings and centres should be used for Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Newton MultiPlugs with rubber sealing grommets are the primary fixings for compatible vertical wall applications and require a clean 10mm hole through the centre of a stud. A MultiPlug Pin may improve grip where a correctly positioned plug is loose. The fixing pattern must suit the substrate and lining. Newton guidance gives typical centres of 600mm vertically by 400mm horizontally for timber battens and 800mm vertically by 600mm horizontally for fixed metal-track systems. Vault guidance uses approximately 300mm around the curve and 600mm along its length. Curved or overhead work normally requires 11mm NuSeal Plugs with compressed CDM Rope or another approved detail. Additional restraint may be necessary around corners, reveals, edges and irregular surfaces.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are joints sealed in Newton CDM 503 membrane?\u003c\/h3\u003e\n\u003cp\u003eA) CDM 503 has no flat flange, so adjacent sheets are not sealed as overlapping flanged joints. Cut the edges squarely, bring them together as a close butt joint and clean and dry the room-facing surfaces. Centre 100mm Newton CDM OverTape over the joint so approximately equal tape width bonds to each sheet. Use the split release liner to attach one side at a time, keeping the tape straight and wrinkle-free, then consolidate its full width with firm hand or roller pressure. Controlled warm air may remove light moisture or improve adhesion in cold conditions, but the HDPE must not be distorted. Newton Joint Tape is used for compatible DPC interfaces and selected overlaps, not as the primary CDM 503 sheet-joint product.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should corners, door reveals and complex junctions be detailed?\u003c\/h3\u003e\n\u003cp\u003eA) Plan corners and reveals before cutting the main membrane, continuing CDM 503 around an opening wherever the geometry permits. Avoid stretching the HDPE, crushing the square studs or leaving narrow unsupported strips. Make controlled cuts only where required by the approved drawing and seal beyond the end of every cut. CDM OverTape is used across butt joints and small gaps, while Joint Tape, compressed CDM Rope, compatible patches or an approved flat DPC-style membrane may be required for three-dimensional intersections. General-purpose building tape, silicone and expanding foam are not suitable primary waterproof joints. Keep all butyl bonding surfaces clean and dry, press every seal firmly and leave the complete detail visible for inspection before a lining, skirting or floor finish conceals it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should Newton CDM 503 connect to BaseDrain at the wall-to-floor junction?\u003c\/h3\u003e\n\u003cp\u003eA) The wall-to-floor junction is a principal water-entry area and must be detailed as part of the complete drainage design. Position CDM 503 so water descending behind the wall sheet enters Newton BaseDrain without passing into the finished room. Keep the channel entry holes and membrane cavity open rather than sealing them into a trapped pocket. Where floor membrane is included, join it to the wall membrane and BaseDrain upstand with the specified Newton CDM OverTape detail, maintaining waterproof continuity without blocking drainage. If a deep floor build-up prevents surface condensation reaching the channel, Newton CDM Condensation Strip may preserve an 8mm collection gap. Plaster, screed, adhesive, skirting compound or sealant must not obstruct this intended route.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 503 require BaseDrain, FloorDrain or a sump pump?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 must discharge into a safe, maintainable water-management arrangement. BaseDrain commonly collects water at the wall-to-floor perimeter, while FloorDrain can serve construction joints, door thresholds, cross-floor routes or a centrally located sump. If site levels allow, the channels may connect to a dependable gravity outlet capable of accepting the design flow without surcharging. Otherwise, they normally feed a correctly sized sump-and-pump system. Pump duty, head, pipe diameter, chamber capacity, redundancy and discharge location must reflect anticipated ingress and the consequence of failure. High-water alarms, standby pumps, battery backup and telemetry may be appropriate. Jetting eyes, sump covers and removable access points must remain reachable after the permanent lining and floor finish are installed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Newton CDM 503 installed on a floor?\u003c\/h3\u003e\n\u003cp\u003eA) Confirm first that CDM 503 is specified for the intended floor loading and that the slab, drainage, insulation, heating and finish form one approved build-up. Unroll the membrane with the studs facing down, working from clean, protected areas and avoiding sharp debris. Cut accurately around the perimeter, columns, thresholds, sump covers and unavoidable services. Bring successive sheets together as butt joints, then seal them with centred 100mm CDM OverTape on clean, dry surfaces. Connect the membrane to BaseDrain, the wall sheet, DPC details or Condensation Strip using the approved tapes. Do not drive fixings through the floor membrane. Protect it promptly with the specified load-spreading construction while retaining access to drainage inspection points and the sump.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which floor finishes can be used above Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Compatible floor protection may include a suitably designed screed, tongue-and-groove chipboard, a supported timber floor, insulation with screed or chipboard above, or an approved underfloor-heating tray beneath screed. Newton Fibran XPS 500-C can form a 50mm insulated drainage spacer within certain Newton-approved systems, using underside slots connected hydraulically to BaseDrain and FloorDrain. The complete build-up must be checked for point loads, partitions, storage, plant, screed thickness, long-term creep and intended occupancy. A board’s individual compressive rating does not prove the capacity of the whole floor. Prevent screed, foam, mortar and debris blocking drainage slots or channels, avoid all membrane punctures and preserve removable access to sump covers and jetting points.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 503 be used on vaults and flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is suitable for correctly detailed arched or vaulted soffits where water can drain continuously and the membrane is held tightly without sagging or ponding. Such work should follow current product-specific Newton details because general drawings for deeper membranes may not transfer directly. NuSeal Plugs with compressed CDM Rope, or another approved sealed overhead fixing, are normally required. Flat concrete soffits are specialist inverted cavity-drain applications. The product information states that CDM 503 should not be applied unless the soffit is at least 400mm narrower than the membrane being used, has dependable drainage fall and is installed by very experienced contractors. Where those conditions cannot be met, another waterproofing method should be specified.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should pipes, cables and other services pass through CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Route services on the dry side of the membrane wherever possible, because each penetration creates a potential weakness and unnecessary slab openings can introduce new groundwater paths. When a pipe, cable group, duct or conduit must pass through CDM 503, trim the sheet neatly and use the approved Newton detail. Compressed CDM Rope may form the seal around the service, while OverTape, Joint Tape and a compatible DPC patch connect it to the main membrane. A purpose-made Newton Pipe Collar, Pipe Sleeve or Pipe Seal may provide a more controlled solution. The detail must accommodate vibration, temperature change and later servicing. Inspect the entire circumference, test where practicable and photograph the completed penetration before concealment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What tools and ancillary products are needed to install Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Typical tools include a good-quality 110V SDS hammer drill, 10mm bits for MultiPlugs, an 11mm bit where NuSeal Plugs are specified, a mallet, sharp utility knife, tape measure, long spirit level, rotating laser, clean lint-free cloths and a soft roller for OverTape. Suitable lighting, safe access equipment, dust control and task-specific PPE are also required. System products may include MultiPlugs, expansion pins, NuSeal Plugs, 100mm or 150mm CDM OverTape, Joint Tape, CDM Rope, DPCs, pipe seals, BaseDrain, FloorDrain, corners, T-pieces, adaptors, sump connectors and jetting eyes. Gravity drainage or pumps, alarms, backup provision and discharge pipework must be added where the waterproofing design requires them.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 503 require curing or drying time?\u003c\/h3\u003e\n\u003cp\u003eA) The CDM 503 sheet itself does not cure because it is a prefabricated HDPE membrane fixed mechanically to walls or loose-laid over floors. Follow-on work can generally begin after fixing, butt-joint sealing, wall-to-floor connections, drainage installation, inspection and testing are complete. This can make installation quicker than some wet-applied tanking systems. Nevertheless, a lack of membrane curing does not remove drying requirements for associated materials. Repair mortars, levelling compounds, anti-lime treatments, screeds, adhesives and plasters must reach the condition stated in their individual instructions. OverTape, Joint Tape and CDM Rope also require clean, dry, grease-free surfaces. Concealing damp, dusty or untested joints simply because the membrane itself is dry can compromise the complete waterproofing system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can plaster or render be applied directly to Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Direct plaster or render should not be applied to standard Newton CDM 503 because it is a non-meshed membrane and does not provide an appropriate key for a wet finish. Wall protection may instead comprise a floor-supported independent dry-lining frame, a compatible proprietary metal lining, treated timber battens supporting boards or a properly restrained internal brick or block lining. Battens can be fixed into the screw sockets of correctly installed MultiPlugs using controlled-length 5mm No.10 screws, ensuring the tips cannot pass beyond the plugs. The lining must also satisfy fire, loading, insulation and condensation requirements. Where a keyed direct finish is essential, Newton CDM 503 Mesh or another specifically approved meshed system should be considered instead of modifying standard CDM 503.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main technical specifications of Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is product code M5, manufactured from white HDPE and supplied in a 2m x 20m roll with nominal 40m² coverage. Published data gives a unit weight of 0.5kg\/m², 0.6mm sheet thickness and 3mm round-stud profile. It passes watertightness testing at 60kPa for 24 hours to EN 1928. Listed tensile strength is 416N in the machine direction and 488N across the sheet, static-load resistance exceeds 20kg and compressive strength is stated as 250kN. The working temperature range is -50°C to +80°C, with a softening temperature of 126°C. These test results support specification but do not replace project-specific assessment of water flow, loading, drainage capacity and finishes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which certification and fire classification apply to Newton CDM 503?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is covered by BBA Agrément Certificate 22\/6357 when specified and installed within the certified scope of the Newton CDM waterproofing system. It is declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017 and is suitable for inclusion in project-specific Type C waterproofing designs under BS 8102:2022. Its reaction-to-fire classification is Class E in accordance with BS EN 13501-1. The membrane must remain protected within an appropriately designed building build-up and is not intended for use as an exposed internal surface.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How long should Newton CDM 503 last, and what warranty is offered?\u003c\/h3\u003e\n\u003cp\u003eA) Newton states a 30-year product warranty for CDM 503 and a service life equal to the design life of the structure when the membrane is correctly specified, installed, protected and incorporated into a functioning cavity-drain system. An installation or waterproofing guarantee is separate and normally comes from the appointed specialist contractor. Long-term performance depends on more than the durable HDPE sheet: butt joints, fixing seals, penetrations, channels, sumps, pumps, alarms and ventilation must continue to work. Store rolls upright in dry conditions between 5°C and 25°C, under cover and away from sunlight, freezing, excessive heat, flames, sharp objects and crushing. Installed membrane must remain permanently protected from ultraviolet exposure, impact and wear.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What maintenance does a Newton CDM 503 waterproofing system require?\u003c\/h3\u003e\n\u003cp\u003eA) Once protected, CDM 503 normally needs little direct routine attention, but the connected drainage, pumping, alarm, discharge and ventilation systems require planned servicing. Newton’s manual calls for competent pump and drainage maintenance at least annually as a minimum. Servicing should include cleaning and descaling the sump, checking impellers, seals, floats, non-return valves, discharge pipes, electrical connections and fuses, and removing chamber debris. Flush BaseDrain and FloorDrain through accessible jetting eyes and confirm free flow to the sump or gravity outlet. Test pumps, high-water alarms, battery backup and telemetry under controlled conditions. Keep sump lids, channel access, system drawings and no-fix zones visible or clearly documented so future alterations do not compromise the waterproofing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Newton CDM 503 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 503 is not a standalone barrier against hydrostatic pressure and cannot work without continuous drainage and safe discharge. Its shallow cavity is vulnerable to obstruction if slab falls, cleaning or anti-lime control are inadequate. It is non-meshed, so direct plastering is unsuitable, and ordinary fixings must never penetrate floor membrane. Flat soffits require specialist width, fall, fixing and installer conditions. CDM 503 alone does not guarantee Grade 3 performance, prevent internally generated condensation or act as a ground-gas barrier against radon or methane. Joints require centred 100mm OverTape on clean, dry surfaces. The membrane also cannot conceal structural failure, uncontrolled leaks, hazardous contamination or decay and must be protected from ultraviolet light, impact, heat, flames and later punctures.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What practical tips help ensure a reliable Newton CDM 503 installation?\u003c\/h3\u003e\n\u003cp\u003eA) Plan the complete water route and finishing build-up before unrolling the membrane, including slab falls, BaseDrain, FloorDrain, sump position, butt joints, plug rows, services and inspection access. Use a rotating laser and flood testing to identify low points because standing water can quickly reduce the shallow cavity’s effectiveness. Cut sheet edges squarely, keep all bonding faces clean and dry, centre 100mm OverTape over every butt joint and consolidate it firmly. Control drilling dust and use only the approved sealed plug detail for each location. Before concealment, inspect membrane, joints, penetrations and channels; test pumps, alarms and discharge; photograph critical details; and mark no-fix zones. Provide the owner with drawings, warranties, maintenance intervals and emergency contacts.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_TECH_107f9620-2cd5-496e-9101-1b7ddbfbf974.pdf?v=1786715157\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_TECH_107f9620-2cd5-496e-9101-1b7ddbfbf974.pdf?v=1786715157\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_503_TECH_160x160.jpg?v=1786715136\" alt=\"\" style=\"float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_e3b98bd6-c93b-4c4f-9d55-6ae56323779d_160x160.jpg?v=1779708766\" alt=\"\" style=\"float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_DOP_499bcf6f-4c04-4d24-883a-617533202450.pdf?v=1788781739\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_DOP_499bcf6f-4c04-4d24-883a-617533202450.pdf?v=1788781739\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_DEC_OF_PERFORMANCE_1920e01d-5068-4e06-8e0c-e6445e34cec4_160x160.jpg?v=1788781921\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_DOP_499bcf6f-4c04-4d24-883a-617533202450.pdf?v=1788781739\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_BBA_5e4fece0-5400-4386-871b-89a735f4f104.pdf?v=1787052428\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_BBA_5e4fece0-5400-4386-871b-89a735f4f104.pdf?v=1787052428\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_BBA_2_160x160.jpg?v=1787052435\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":8163353591907,"sku":"NM5","price":158.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-503-cavity-drain-waterproof-membrane-3mm-stud-w-2-0m-x-l-20m-40m-basement-membranes-147.webp?v=1787049968"},{"product_id":"tanking-membrane-newton-503-mesh","title":"Newton CDM 503 MESH Membrane - 3mm Studded Waterproof MESHED Membrane","description":"\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNewton CDM 503 MESH Membrane\u003c\/strong\u003e is a High Quality, \u003cstrong\u003eBBA Approved\u003c\/strong\u003e, 3mm Stud Cavity Drain Waterproofing Membrane comprising of HDPE Membrane with a strong mesh on one side. The meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWith its 3mm Stud, Newton CDM 503 MESH is ideal for for when space is tight, such as with stairs or low headroom.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\"\u003e  Newton CDM 503 is supported by BBA Certification Certificate Number 94\/3010.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSupplied in \u003cstrong\u003e(W) 2.0M x (L) 20M (40M²) Rolls\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 MESH Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh is a high quality Cavity Drain Waterproofing Membrane, with a 3mm Stud, comprising of high density polyethylene membrane with a strong polyethylene mesh heat-welded during the manufacturing process to the surface of one side.\u003c\/p\u003e\n\u003cp\u003eThe meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/p\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh is suitable for use within Newton System 500, Newton's internally applied Waterproofing System that includes Newton Drainage and Pumping Systems.\u003c\/p\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh is suitable for the waterproofing of earth retained walls and vaulted soffits. It is guaranteed against deterioration for 30 years and has a life expectancy of at least 50 years (DIN 9001:2000).\u003c\/p\u003e\n\u003cp\u003eNewton\u003cspan\u003e CDM \u003c\/span\u003e503 Mesh is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalies, saline solutions and organic acids, and not affected by minerals and hydro-carbons.\u003c\/p\u003e\n\u003cp\u003eIt is also impervious to root penetration, is rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eDoes not require extensive and damaging preparation to the wall surface.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eOnly 3mm in thickness and so is ideal for when space is tight, such as with stairs or low headroom.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed of installation.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvides vapour control and, when used with humidity control systems, is capable of delivering an environment to all levels within a Grade 3 environment to BS 8102:2009.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistant to chemically aggressive groundwater, efflorescing salts and hydrocarbon contamination.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRot-proof and resistant to root penetration.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:4px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:4px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-tt9e{font-weight:bold;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n.tg .tg-p4un{font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMembrane Material\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eHDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMembrane Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e0.7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eStud Depth\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e2.9mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eVicat Softening Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e126°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eService Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCompressive Strength (EN 25619-2)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e320 kpa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eThermal Conductivity (EN12667)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e0.461 W\/mK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Resistance - Sd Value (BS EN 1931)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;604m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Resistance - μ Value\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;1208000μ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Diffusion Resistance\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;3020 MNs\/g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eResistance to Fire (BS EN 13501-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eEuroClass E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eChemical Resistance - Excellent (EN 14030)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eOxidation Resistance - Excellent (EN ISO 13438)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eRadon Gas Resistance - Membrane* (K124\/02\/95)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eRadon Gas Resistance - Joints* (K124\/02\/95)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eResistance to Liquid Hydrocarbons* (EN 16140:2011)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCarbon Dioxide Permeability*\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMethane Permeability*\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCarbon Dioxide Transmission Rate (ISO 15105-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMethane Transmission Rate (ISO 15105-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003ePreparation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNewton CDM 503 Mesh\u003c\/strong\u003e can be installed over a wide range of substrates in varying situations - walls, ceilings, soffits, etc. However, before the system is installed, the area must be assessed to determine what preparation is required:\u003c\/p\u003e\n\u003cp\u003eAll timber and other organic material must be removed to prevent risk of fungal or bacterial growth behind the System, e.g. skirting boards, timber plates, old wallpaper etc. If evidence of rot exists, this must be dealt with by a specialist contractor prior to installation of the system (See our \u003cstrong\u003eWoodworm \u0026amp; Dry Rot Control\u003c\/strong\u003e Products). If any mould, etc. exists, this should be cleaned off and the area sterilised with a \u003cstrong\u003eFungicidal Wash\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eIf the walls are uneven or areas have deteriorated, any large depressions should be levelled and made good to ensure a solid fixing\u003c\/p\u003e\n\u003cp\u003eWhen fixing the system to flat soffits you must ensure that there is a fall to create proper drainage and prevent ponding. Any sagging of the membrane should not be great enough for ponding to take place\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e which prevents free lime from the curing concrete being drawn out by ingressing water.\u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication on Walls:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNewton CDM 503 Mesh\u003c\/strong\u003e should be installed by those with experience of structural waterproofing.\u003c\/p\u003e\n\u003cp\u003eIt is recommended that Newton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh and its ancillary products be installed by contractors trained for the correct use and specification of the product.\u003c\/p\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh is fixed with the studs against the wall to create an air \/ depressurisation gap.\u003c\/p\u003e\n\u003cp\u003eThe membrane can be fixed either vertically or horizontally. However as this product is not available in 2.4M height and also due to the heavy weight of the material, most fixing of Newton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh will be Vertical.\u003c\/p\u003e\n\u003cp\u003eWhen making this decision, you will need to take into account the size of the area to be lined, and the height of the walls relative to the width of the membrane.\u003c\/p\u003e\n\u003cp\u003eHorizontal Fixing requires less cuts and jointing but the full roll is very heavy at first. Vertical fixing has much lighter strips to fix, but requires that each of these is taped back together again. You may find that vertical fixing is easier, but requires more tape for jointing.\u003c\/p\u003e\n\u003cp\u003eThe membrane is fixed to the wall with the Newton CDM MultiPlug. The CDM MultiPlug has a soft rubber sealing washer fitted to the plug for sealing to the wall membrane.\u003c\/p\u003e\n\u003cp\u003ePlace the membrane in position as level as you can judge by eye. Using a 10mm drill bit, drill through the centre of a stud near the top and edge to a depth greater than the fixing.\u003c\/p\u003e\n\u003cp\u003eThe fixing is then hammered into the pre-drilled hole until the plug sits flush in the stud. The rubber washer re-seals the hole. Level the membrane using the spirit level or laser level if used, and fix another plug about 2 metres along at the top of the sheet. The membrane will now be hanging level to the wall.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing horizontally, continue fixing every 2 metres until you have reached the end of the roll or you have covered all of the wall(s) to be treated. It is very important to regularly check the level. If the membrane is not level, you may well find that the membrane is kinked and looks unsightly, it will also dive down when fitted around corners.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing Vertically, hang each subsequent sheet by the two fixings as described above.\u003c\/p\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh does not have a flange, so a \u003cstrong\u003e'butted joint'\u003c\/strong\u003e is used when joining, sealed with \u003cstrong\u003ePlatinum Mesh Tape.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eApply Platinum Mesh Tape along the joint with equal overlaps of the tape onto each sheet of membrane and press firmly into place.\u003c\/p\u003e\n\u003cp\u003eApply more pressure with the palm of your hand to further seal the whole of the joint. A Hot Air Gun should be used to help sealing, especially in cold or damp conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFixing Centres:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFix in a square at 350mm centres, and then fix a plug in the centre of four fixings so it looks like a 5 on a dice.\u003c\/p\u003e\n\u003cp\u003eAll fixings will then be a maximum of 250mm centres.\u003c\/p\u003e\n\u003cp\u003eOn very flat walls, the horizontal and vertical centres can be moved out to 400mm so when the centre plug is fixed, the centres are not more than 300mm.\u003c\/p\u003e\n\u003ch5\u003eFinishing\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eFinishing:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh Membrane can be plastered or rendered, or can be plasterboarded using a dab fix.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePlasters:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe recommended plaster to be applied to Newton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh is Tarmac Whitewall which should be in two coats when applied to Newton Mesh Membranes.\u003c\/p\u003e\n\u003cp\u003eThe plasters can accept a finishing 3mm skim coat to finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Manufacturers recommended drying times may vary according to atmospheric conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCement Based Renders:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor internal cement renders the mix should be six parts clean sharp sand \/ one part lime \/ one part cement. A two-coat application is recommended allowing 7-10 days between coats.\u003c\/p\u003e\n\u003cp\u003eDrying time is important because shrinkage cracks may appear.\u003c\/p\u003e\n\u003cp\u003eA weaker mix of seven or even eight parts sand can be used for the second coat.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHydraulic Lime Based Mortars:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eFirst Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUsing a ratio of 1 part Lime to 2½ - 3 parts sharp washed sand with evenly distributed hair throughout the mortar and working to a layer of 10mm thick, push the plaster into and across the pre-wet laths at a 45 degree angle to the lathes.\u003c\/p\u003e\n\u003cp\u003eThe plaster should be correctly cured until hard\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSecond Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe second coat also known as the intermediate or float coat will be applied similar to the first coat only without any hair being added to the mortar.\u003c\/p\u003e\n\u003cp\u003eYou must ensure you wet down the first coat with a fine mist before spreading a 7mm coat, before scratching up and leaving in preparation of the finish coat.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFinish Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eFor the final top coat a fine mix of 1 part lime putty to 2 parts well graded super fine sand. Remembering to wet down the surface before application with a fine mist spray.\u003c\/p\u003e\n\u003cp\u003eAllow time for the water to absorb into the plaster then apply a coat of approximately 5mm, then rule off and leave for a couple of hours.\u003c\/p\u003e\n\u003cp\u003eWhen ready, rub up the finish coat using a plastic or wooden trowel to bring back the fat until the required finish has been reached in the case of any light crazing this can be rubbed up and trowelled out.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGeneral Plastering \u0026amp; Rendering Considerations:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All plasters and renders etc. must be to a minimum total depth of 15mm.\u003c\/p\u003e\n\u003cp\u003eThe undercoat should be applied with firm pressure to ensure the product is fully pushed behind the mesh so that the studs are fully filled, and to an approximate thickness of 5mm and be well scratched with a wire scratcher.\u003c\/p\u003e\n\u003cp\u003eWhen the scratch coat has set, the floating coat should be applied to a depth of 7mm and lightly scratched to provide a firm key for the final coat, which should be to a minimum thickness of 3mm.\u003c\/p\u003e\n\u003cp\u003eAll plasters and renders should be applied strictly in accordance with the manufacturer’s instructions, and good plastering \/ rendering practice as described in BS5492 and BS5262 Code of Practice.\u003c\/p\u003e\n\u003cp\u003eDo not apply decoration until the plaster or render is thoroughly dry.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e If plasters other than those specified above are used they will not conform to the Newton Waterproofing Specification and will therefore invalidate any guarantee on the material.\u003c\/p\u003e\n\u003cp\u003eIf any special renders or plasters are to be considered, technical advice must be sought from the Company’s technical department.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCuring:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Cement and Lime based mortars require curing. Curing is the process of keeping a mortar or render under a specific environmental condition until the chemical set (referred to as hydration) is sufficient to withstand the environment into which the mortar has been placed.\u003c\/p\u003e\n\u003cp\u003eLime binders are generally weaker than cements taking longer to acquire their strength and hardness, leaving them potentially more vulnerable for a longer period than cement equivalents, and curing them once placed is simply regarded as best practice.\u003c\/p\u003e\n\u003cp\u003eGood curing is typically considered to be that of providing a humid environment stimulating full hydration of the lime or cement binders, providing strength development along with other benefits, especially the ability to withstand hairline cracking.\u003c\/p\u003e\n\u003cp\u003eThe most common cause of failure is allowing a mortar \/ render to dry out too quickly, impeding the chemical process for hydration, stressing the mortar resulting in cracking.\u003c\/p\u003e\n\u003cp\u003eStandard practice for protecting cement or lime based renders\/mortars is with wet \/ dampened hessian sheeting draped over the area in relatively close proximity to the render. This should be left in place for at least a week and is a standard requirement that is required in all cases.\u003c\/p\u003e\n\u003cp\u003eDuring the warmer months, the hessian will need to be repeatedly wetted and\/or covered with plastic sheeting to ensure the correct curing environment.\u003c\/p\u003e\n\u003cp\u003eCuring should be of at least 7 days.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDry Lining:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503 Mesh can be effectively used in conjunction with dry lining by dab fixing the plasterboard using a proprietary dabbing compound.\u003c\/p\u003e\n\u003cp\u003eBe careful when installing laminated or insulated plasterboard, as when they are dot \u0026amp; dabbed to Newton Meshed membranes, building regulations require two mechanical fixes to each laminated board. These fixings may breach the membrane which cannot be repaired.\u003c\/p\u003e\n\u003cp\u003eWhere insulation is required to the wall build, we recommend to use un-meshed \u003cstrong\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e508\u003c\/strong\u003e, \u003cstrong\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e508R\u003c\/strong\u003e or \u003cstrong\u003eNewton \u003cspan data-mce-fragment=\"1\"\u003eCDM \u003c\/span\u003e503\u003c\/strong\u003e and use an independent dry-lining frame.\u003c\/p\u003e\n\u003cp\u003eHouse the insulation within the frame and plasterboard over.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_503-MESH_TECH.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_503-MESH_TECH.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_TECH_small.jpg?v=1524152822\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_small.jpg?v=1523898741\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_DOP.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_DOP.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_DEC_OF_PERFORMANCE_small.jpg?v=1524229159\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_BBA_099a2b6f-4be9-4579-88d4-79609a5257ff.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_BBA_099a2b6f-4be9-4579-88d4-79609a5257ff.pdf?7013313247206500280\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_503_MESH_BBA_small.jpg?v=1524229171\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":7653426823198,"sku":"NM11","price":219.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-503-mesh-membrane-3mm-studded-waterproof-meshed-w-2-0m-x-l-20m-40m-basement-membranes-926.webp?v=1780915243"},{"product_id":"platon-p8-basement-tanking-membrane","title":"Platon P8 - Basement Tanking Membrane (8mm Stud)","description":"\u003cp\u003ePlaton P8 is a \u003cstrong\u003eBBA Approved\u003c\/strong\u003e, 8mm Stud, Basement Waterproof Tanking Membrane.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlaton\u003c\/span\u003e\u003cspan\u003e P8 \u003c\/span\u003eis used as a waterproofing drainage layer applied to the inside face of basement and below ground walls and floors within a drained cavity membrane system. Platon\u003cspan\u003e \u003c\/span\u003eP8 is manufactured from High Density Polyethylene and is impermeable to water, water vapour or Radon gas.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\" alt=\"\"\u003e\u003cspan\u003e  Platon P8 is supported by \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_BBA_4f5e9345-350c-48b0-b3c4-efc453b8033d.pdf?10782345335459962040\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certification Certificate Number 01\/3823\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable in various Roll sizes ranging from \u003cstrong\u003e10M²\u003c\/strong\u003e to \u003cstrong\u003e40M²\u003c\/strong\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003ePlaton P8 Cavity Drain Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003ePlaton P8 Cavity Drain Membrane is manufactured from high-density polyethylene (HDPE) for use within \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/platon-membranes\" target=\"_blank\"\u003e\u003cstrong\u003eSystem Platon\u003c\/strong\u003e\u003c\/a\u003e, Isola's internally applied Waterproofing System that includes the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003eAqua Channel Drainage System\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/aqua-pump-basement-water-sump-pump-system\" target=\"_blank\"\u003e\u003cstrong\u003eAqua Pumping Systems\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003ePlaton P8 impermeable and resistant to the usual chemicals in the building construction. Studs are formed in a regular pattern on the one face of the product. The studs are spaced at approx. 25mm centres in both directions.\u003c\/p\u003e\n\u003cp\u003ePlaton P8 is CE marked in accordance with EN 13967 and EN 13984. A separate declaration gives values for several characteristics.\u003c\/p\u003e\n\u003cp\u003ePlaton P8 membrane is tough but pliable and can be bent round corners and projections without risk of breaking, even in very low temperatures. The product can be easily cut with a knife or scissors.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:5px 15px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:5px 15px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-tt9e{font-weight:bold;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n.tg .tg-p4un{font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMembrane Material\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eHDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eNominal 0.50mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eStud Height\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eApprox. 6.5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eConstruction Height\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eApprox. 7mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eUnit Weight\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e0.45kg\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eDeformation Under Long Term Loading\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eMax. 20% (at 50 kN\/m²)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCompressive Strength\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e150 kN\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e-10° to +60°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e+160°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eLinear Coefficient of Thermal Expansion\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e0.18mm\/m.°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Resistance\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e280m equivalent air layer\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eAir Gap Volume\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e4.0L\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eDrainage Capacity\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eApprox. 3.8L\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eNo. of Studs (Approx)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e1640 per m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eAt Least 50 Years for Defined Applications\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eColour\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eNatural\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003ePlaton P8 is CE marked in accordance with EN 13967 and EN 13984. A separate declaration gives values for several characteristics.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eAssociated Products:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-brick-plugs-with-seals\"\u003ePlaton Brick Plugs \u0026amp; Seals\u003c\/a\u003e:\u003c\/strong\u003e For Fixing the Membrane to the substrate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Tape\u003c\/strong\u003e\u003c\/a\u003e: Provides a double-sided waterproof seal when joining Membranes along the flange where they overlap.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Rope\u003c\/strong\u003e\u003c\/a\u003e: Used to form a seal around the neck of the Platon Brick Plug if not using Sealing Washers\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-corner-strip-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Corner Strip\u003c\/strong\u003e\u003c\/a\u003e: Used to link Waterproof Membranes at Floor to Wall joints.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003eWykamol Anti Lime Sealer\u003c\/a\u003e:\u003c\/strong\u003e Used for the control of primary and secondary efflorescence in concrete mixes. Should be applied to concrete surfaces prior to the installation of a 'Type C' Cavity Drain Membrane System to prevent the ‘leaching’ of free lime from the concrete.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-drainage-channel\" target=\"_blank\"\u003ePlaton Aqua Channel System:\u003c\/a\u003e \u003c\/strong\u003eA PVC drainage conduit which should be fitted around the periphery of an internal floor at the vulnerable wall \/ floor junction. Any water entering the building through walls or curved soffits is controlled behind the membrane and enters the channel through before being diverted to the mechanical (Sump and Pump) or natural drainage point.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/aqua-pump-basement-water-sump-pump-system\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Aqua Pump System\u003c\/strong\u003e\u003c\/a\u003e: A ready to use complete water control system principally designed for use in below ground structures to control water ingress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch5\u003e\u003cspan\u003eDesign Consideration\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eMembrane Suitability:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003ePlaton Cavity Drain Membrane can be applied to almost all sound building structures below ground, which are affected by dampness or water ingress. \u003c\/span\u003e\u003cspan\u003eHowever, they are not recommended for installation in the following situations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eWhere the Cavity Membrane System cannot be drained, otherwise the system will fail.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFixed onto internal flat soffits unless the soffit has an existing fall or a fall can be formed at the design stage (in the case of new build construction) or created using sand \u0026amp; cement renders, otherwise water would pond behind the membrane and build up like a balloon. The weight of water would inevitably burst the membrane seals, which are not designed to hold water under pressure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eUnder or on top of concrete\/stone staircase treads and risers, because of the many convoluting junctions and angle details. In such circumstances, we recommend they be treated independently using an epoxy vapour barrier.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eIngressing Water:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003ePlaton Cavity Drain Membranes are capable of dealing with (quite) large volumes of water, so ingressing water will not usually require remedial action. But if the flow rate is such that it will be able to carry silts\/dissolved lime with it, then this inflow should be stemmed\/controlled prior to fitting the membrane. This can be achieved as follows.\u003c\/span\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eIf ingressing water is localised then the application of \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/water-plug-platinum-aqua-stop\" target=\"_blank\"\u003ePlatinum Aqua Stop Plugging Compound\u003c\/a\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/water-stop-rapid-set-plugging-mortar-compound-5kg\" target=\"_blank\"\u003e \u003c\/a\u003e\u003c\/strong\u003ewill often be sufficient.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIf ingressing water is more general and cannot be dealt with by localised plugging, consideration should be given to applying a general coat of 3:1 render incorporating an accelerator in the mix.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan\u003eWhen water is flowing through concrete or mortar (particularly when it is new) there is a tendency for dissolved lime to be brought into the cavity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThis lime can then come out of solution and block up cavities and drains. If this is a risk, then the source of water ingress needs to be treated in the same way as silt bearing water, as described above.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNB:\u003c\/strong\u003e Regardless of conditions at the time of inspection, BS 8102 says it must be assumed hydrostatic pressure is going to occur at some time during the lifetime of the basement. This means that some form of water removal system must always be fitted with a Platon Cavity Membrane in below ground structures.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan\u003e\u003cstrong\u003eDrainage Types:\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eThere are two principle forms of drainage, these are natural (gravity) and mechanical (sump \u0026amp; pump) and can be used in conjunction with falls or drainage channels.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHowever, when assessing the type of drainage facility to be used and because the drainage is the key to the success of the cavity membrane system, it is important to take into consideration the following points.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eNatural - (Combined Foul Chambers \u0026amp; Integral Gullies)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eWhere drainage with gravity is feasible within the bounds of the property or at a point of exit from the property, it is most important to establish that the ‘internal drainage’ is in good working order and to question whether the local drains are connected to public drains or a soakaway.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eDrains can and do block up or back up causing flooding, including escape of foul waste and pungent smells.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eSoakaways can also fill up during periods of heavy rain, which would lead to flooding and failure of the cavity membrane system.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIn situations where the Platon membrane installer finds that the only possibility of draining the cavity membrane is into a foul \/ soakaway system or his client so instructs, liability for the waterproofing system should therefore be excluded in the event of blockage of the foul pipes or the soakaways filling up. We, and the products Manufacturer, always recommend the inclusion of sump and pumps.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eMechanical - (Sump \u0026amp; Pump)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003ePlatinum Chemicals offer an off-the-shelf sump and pump drainage system, \u003cstrong\u003e‘\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/aqua-pump-basement-water-sump-pump-system\" target=\"_blank\"\u003eThe Aqua Pump Range\u003c\/a\u003e’\u003c\/strong\u003e and \u003cstrong\u003e‘Aqua Pump Pro Range’\u003c\/strong\u003e which has been specifically  designed for the purpose of controlling ground water ingress.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eThe simple to fit sump pump kit comprises a polyethylene pre-formed sump chamber with a structural lid. The submersible Aqua Pump is controlled by an automatic integral float switch and comes with a non-return valve and a high level water alarm that warns of mechanical or power failure.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eHowever, it would be prudent to install a double pump system ‘The Aqua Pump Plus Kit’ which consists of two pumps in the sump chamber. This secondary pump would provide a back up in case of mechanical failure of the principal pump.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eConsideration should also be given to installing a \u003cstrong\u003eBattery Back-up Pump\u003c\/strong\u003e in case of a power failure and is also available from Platinum Chemicals.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDrainage Channel - (Platon Aqua Channel Drainage System)\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003ePlatinum Chemicals also offer \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Aqua Channel\u003c\/strong\u003e\u003c\/a\u003e, which is a PVC drainage conduit specifically designed for the control of water ingress in below ground situations.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eIt is fitted around the perimeter of the floor at the vulnerable wall \/ floor junction and can be used in most waterproofing situations, and is particularly suited for use in conjunction with Platon Cavity Drain Membrane Systems.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWater entering the building through the walls is controlled behind the Platon Membrane and diverted to the Aqua Channel at the base of the wall. The water enters the Aqua Channel through pre-drilled drainage holes and must then be diverted to a suitable drainage point, either natural or a sump and mechanical pump. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-drainage-channel\/products\/platon-aqua-channel-rodding-eye\" target=\"_blank\"\u003e\u003cstrong\u003eRodding Eyes\u003c\/strong\u003e\u003c\/a\u003e can also be incorporated into the Aqua Channel.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003cspan\u003e\u003cstrong\u003eFalls - (Floors)\u003c\/strong\u003e\u003c\/span\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eIt is essential that there are no undulating surfaces or depressions in the floor. In new build or whenever floors are being replaced, the floor slabs can be designed and constructed to falls 2º or 3º towards the water collection facility, i.e. sump chamber.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWhere an existing solid floor is to be retained a sand\/cement screed can be laid over the entire floor gently sloping towards the sump. In all cases the floor should always be tested by spraying with a hose, to ensure that all water finds its way to the water collection point before laying the cavity membrane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cstrong\u003eNote: \u003c\/strong\u003eWherever possible (head height permitting) we recommend that \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/basement-floor-membrane-20mm-cv20\"\u003e\u003cstrong\u003ePlatinum CV20\u003c\/strong\u003e\u003c\/a\u003e be used on floors. This is because the CV20 Membrane has a far greater drainage capacity and significantly reduces the risk of hydrostatic pressure building up within the cavity.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eUndermining Structures:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eSump Chambers\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eConsideration must be given to the implications of fitting sumps in the ground, e.g. where unstable elements are present, such as chalk or sand.\u003c\/p\u003e\n\u003cp\u003eThe installation of a perforated sump chamber could cause washing away and potential undermining. Therefore, in such cases, only sealed sumps should be installed and structurally held in place by concrete etc, with the water collection limited to that entering from the drainage channels.\u003c\/p\u003e\n\u003cp\u003eThe final decision on the sump type in cases where ground conditions are unknown should be delayed until excavation is undertaken.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIMPORTANT NOTE:\u003c\/strong\u003e If there is any concern as to whether there is a risk of de watering the ground to a condition whereby the structure as a whole could or may be undermined, then advice should be sought from a chartered engineer.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eDrainage Channel\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eIf the Aqua Channel cannot be formed \/ inserted into the floor at the wall\/floor junction, because there are in-situ reinforcing bars in the slab.\u003c\/p\u003e\n\u003cp\u003eThen either a fall must be created in the floor (as previously described under the heading falls) or a series of small surface channels (cut into the floor like chevrons) must be formed with a fall towards the direction of the sump\/water collection chamber.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eExisting Plasters\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003ePlaster that may be affected by being closed in behind the Platon Cavity Membrane, such as gypsum or lightweight plaster, or where the existing plaster is loose or de-bonding, should be removed from walls \/ soffits prior to membrane application.\u003c\/p\u003e\n\u003cp\u003eOnly where dense and well adhered sand and cement renders are present and where removal may cause unwanted structural damage to substrates can they be left in place.\u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eOne of the benefits of using cavity drain membrane is that in general, very little preparation to the substrates is required and although the cavity membrane is flexible and does not need a perfect surface for application, the following points need to be considered.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eUnsound materials on the surface like renders or plasters need to be removed. Any organic materials such as wallpaper, timber skirtings, fixing grounds etc need to be removed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eA specialist Timber Treatment contractor should investigate any fungal decay \/ infestations in timbers. Also timber that is in contact with damp masonry should be removed or physically isolated.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExcessively uneven wall and floor surfaces should be dubbed out\/levelled especially if timber battens are to be fixed to support dry lining board. Where a wooden floor finish is required such as T\u0026amp;G flooring grade chipboard, it must also be borne in mind that the membrane will follow the contours of the floor. Therefore to achieve a flat surface, any depressions or undulations must be ironed out to avoid undue movement in the floor finishes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSubstrates must be free of sharp protruding objects and debris etc that can damage the membrane. We would also recommend that where mould, mosses, lichens and algae has affected substrates, a surface sterilisation with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/trisol-23-masonry-fungicide-dry-rot-treatment\" target=\"_blank\"\u003e\u003cstrong\u003eTRISOL 23\u003c\/strong\u003e\u003c\/a\u003e should be used.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLoose, friable or defective masonry should be repaired to ensure a solid fixing.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNew concrete should be treated with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e which prevents free lime from the curing concrete being drawn out by ingressing water.\u003c\/span\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eInternal Basement Structures:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eSet out below is a generic method of installation, which can be used to apply Platon Cavity Drain Membranes continuously between wall and floor.\u003c\/p\u003e\n\u003cp\u003eNB it is assumed by this stage, that the site and \u003cstrong\u003eDesign Considerations\u003c\/strong\u003e have been assessed and the type of drainage facility chosen has been tested.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eWall Applications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe installation of Platon P8 Membrane can be fixed to walls either vertically or horizontally, but when choosing the method of application, consideration should be given to the height of walls in relation to the size of the roll of membrane.\u003c\/p\u003e\n\u003cp\u003eThere are fewer joints in horizontal applications but it can be awkward and difficult to manoeuvre the weight of a full roll of membrane. Particularly in situations where the membrane has to be taken in and out of numerous recesses, also around convoluting junctions or were walls are not square.\u003c\/p\u003e\n\u003cp\u003eVertical application may have more joints and require more \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Tape\u003c\/strong\u003e\u003c\/a\u003e, but this method is more manageable and much easier to fix.\u003c\/p\u003e\n\u003cp\u003ePlaton P8 Membrane is fixed to walls with \u003cstrong\u003e\u003c\/strong\u003ea suitable Watertight Brick Plug Fixing, such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-brick-plugs-with-seals\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Brick Plugs \u0026amp; Seals\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-brick-plugs\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e wrapped with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Rope\u003c\/strong\u003e\u003c\/a\u003e. This will form a seal with the membrane when the plug is driven home into the substrate.\u003c\/p\u003e\n\u003cp\u003eIf the ceiling height is constant, measure and cut drops of the membrane to completely cover the wall areas to be treated. Place the membrane against the wall as level as possible by eye sight and in the top right or left hand corner (depending on which way around the room the membrane is being taken) drill a hole through the centre of the membrane stud using a 10mm drill bit.\u003c\/p\u003e\n\u003cp\u003eInsert the brick plug and hammer home the plug till it finishes flush with the membrane.\u003c\/p\u003e\n\u003cp\u003eUsing a spirit level, level out the membrane and then drill and fix another Brick Plug in the same manner approximately 1.5M along the top of the sheet and along the same line of stud as the first fixing.\u003c\/p\u003e\n\u003cp\u003eOffer up the next length of membrane and position the flange over the studs of the first sheet and fix with two Brick Plugs at high level as previously described.\u003c\/p\u003e\n\u003cp\u003eContinue on in this manner, ensuring the membrane stays as level as possible until all the walls are covered. These independent membrane drops will relax after a while and hang flatter to the wall. The drops are now ready for the next step.\u003c\/p\u003e\n\u003cp\u003eThoroughly clean the flange and the studs where the seal is to be made, (the best cleaning material is \u003cstrong\u003ePaper Towel\u003c\/strong\u003e). Any dust or dirt will compromise the integrity of the sealed joint. If the membrane is covered in plaster or brick dust, wash off with clean fresh water only and allow to dry. DO NOT use soap or detergents, as these will leave traces on the membrane, which may affect the seal at a later date or make sealing more difficult.\u003c\/p\u003e\n\u003cp\u003eThe separate membrane drops should now be sealed together using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Tape\u003c\/strong\u003e\u003c\/a\u003e. Apply the tape to the stud area below, which the flange will cover and press home onto the area between the studs.\u003c\/p\u003e\n\u003cp\u003eFlick over the flange section to cover the tape line, and check for uniformity of cover on tape line. Remove the tape backing paper, starting from the middle section of the wall drop, forming two backing paper tags, one going up and the other down.\u003c\/p\u003e\n\u003cp\u003eOn the exposed section of tape apply hand pressure only to the flange to form an initial seal. Carry on to form the seal from the centre section of membrane working up to the top, then go back to the centre and repeat the operation going downwards.\u003c\/p\u003e\n\u003cp\u003eSealing in this manner will prevent any buckling between the membrane or stress concentration at the joint. In very cold or humid conditions a hot air gun can be used to obtain a good sealed joint.\u003c\/p\u003e\n\u003cp\u003eNow that the membrane is sealed to form one continuous sheet, Brick Plugs can now be fixed through the membrane in position to accommodate the chosen dry lining system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e Although a \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/sds-drill-bit-10mm\" target=\"_blank\"\u003e\u003cstrong\u003e10mm Drill Bit\u003c\/strong\u003e\u003c\/a\u003e is the correct size to use, in very soft brickwork this can result in loose fixing. In these circumstances, it is useful to have on hand drill sizes down to \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/sds-drill-bit-8mm\" target=\"_blank\"\u003e\u003cstrong\u003e8mm Drill Bit\u003c\/strong\u003e\u003c\/a\u003e and experiment with different sizes for the best results.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFloor Applications:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eBegin at one side of the room and unroll the Floor Membrane against the Wall Membrane with the studs facing down onto the floor.\u003c\/p\u003e\n\u003cp\u003eAllow for the membrane flange overlap, cut the membrane to the desired length or width of the floor. Repeat this exercise until all the lengths \/ widths required to cover the floor area have been cut.\u003c\/p\u003e\n\u003cp\u003eRoll out the next length\/sheet of membrane and position the flange over the studs of the first sheet laid and thoroughly clean the flange and the studs where the seal is to be made as previously described for wall application.\u003c\/p\u003e\n\u003cp\u003eApply \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Tape\u003c\/strong\u003e\u003c\/a\u003e to the stud area below which the flange will cover and press home onto the area between the studs.\u003c\/p\u003e\n\u003cp\u003eFlick over the flange section to cover the tape line, and check for uniformity of cover on tape line. Remove the tape backing paper, starting from the middle section of the membrane sheet, and peel off backing paper in opposite directions along the flange. On the exposed section of tape apply hand pressure only to the flange to form an initial seal. Carry on forming the seal working away from the centre of the membrane.\u003c\/p\u003e\n\u003cp\u003eFoot pressure can be applied by sliding the sole of the foot over the membrane joint, to ensure that the membranes are fully bonded. Sealing in this manner will prevent any buckling between the membrane or stress concentration at the joint.\u003c\/p\u003e\n\u003cp\u003eIn very cold or humid conditions a hot air gun can be used to obtain a good sealed joint.\u003c\/p\u003e\n\u003cp\u003eThe next stage of the operation is to link the floor membrane to the wall membrane, which can be achieved, using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-corner-strip-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Corner Strip\u003c\/strong\u003e\u003c\/a\u003e. Using the Corner Strip, work out how many linear metres there are around the walls, the Corner Strip is supplied in manageable 10M Lengths. Alternatively, our \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/basement-membrane-corner-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Corner Tape\u003c\/strong\u003e\u003c\/a\u003e can also be used.\u003c\/p\u003e\n\u003cp\u003eThe \u003cspan\u003eCorner Tape\u003c\/span\u003e is folded in half along the length of the piece to be used and positioned with the crease into the angle as described for the wall \/ floor junction.\u003c\/p\u003e\n\u003cp\u003eOnce correctly aligned, carefully pull off the backing paper and press firmly out with the palm of the hand onto the floor and wall membranes.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFlat Soffit Application:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlaton P8 should not be fixed to the under side of a flat soffit unless a fall exists or a fall can be created in the soffit itself.\u003c\/p\u003e\n\u003cp\u003eThe soffit should first be measured to establish the desired lengths or widths of membrane required to cover the area and then a further 200mm of membrane should be added to the measurements, to allow for the membrane to be lapped down all the peripheral walls.\u003c\/p\u003e\n\u003cp\u003eApply \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Rope\u003c\/strong\u003e\u003c\/a\u003e to \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-brick-plugs\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e, then around the perimeter edges of the membrane, fold the membrane inward 200mm to form a positive creased and create a down lap. Offer the membrane up to the soffit and position the down lap creases into the junction between the soffit and wall.\u003c\/p\u003e\n\u003cp\u003eDrill and fix enough Brick Plugs through the membrane and into the soffit to hold the membrane in place with the studs against the soffit.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNB:\u003c\/strong\u003e Wherever the soffit membrane meets the wall, a 200mm down lap must be allowed and formed as above.\u003c\/p\u003e\n\u003cp\u003eOffer the next length\/sheet of membrane up to the soffit and position the flange over the studs of the first sheet, fix and secure the membrane as described above. Repeat this operation until all the membrane sheets are held in place.\u003c\/p\u003e\n\u003cp\u003eThoroughly clean the flange and the studs where the seal is to be made as previously described for wall application.\u003c\/p\u003e\n\u003cp\u003eApply \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003ePlaton Sealing Tape\u003c\/a\u003e \u003c\/strong\u003eto the stud area, which the flange will cover and press home onto the area between the studs. The membrane should now be sealed to form one continuous sheet, Brick Plugs can now be fixed through the membrane, in positions to accommodate the chosen dry lining system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e It is important to ensure that the membrane is taut against the soffit and doesn’t sag, otherwise water ponding will occur and the membrane\/seals could fail.\u003c\/p\u003e\n\u003cp\u003eInternal and external corners are formed in exactly the same way as that which has been previously described in \u003cstrong\u003e‘Floor Applications'\u003c\/strong\u003e using Platon P8 with membrane upstand except in this case, they will be formed in reverse and be upside down.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eService Entry Seals:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhere there are services such as pipes, ducting or steel stanchion that protrude through walls or floors, the membrane should be carefully cut and trimmed around the obstacle and sealed using a combination of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Rope\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-corner-strip-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Corner Strip\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDoors and Windows:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eDoor and Window Frames and timber surrounds should always be removed to enable the Platon Membrane to be extended around or into door and window reveals to maintain the continuity of the waterproofing system and to also provide a physical barrier between the frames and damp masonry.\u003c\/p\u003e\n\u003cp\u003eIn situations where the Platon Membrane would restrict or limit the profile of replaced frames, then \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course\" target=\"_blank\"\u003e\u003cstrong\u003ePlain Damp Proof Course (DPC)\u003c\/strong\u003e\u003c\/a\u003e can be used to line and protect the reveals instead.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eVentilation - Part F of Building Regulations:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThere is no requirement to ventilate the membrane cavity in a fully sealed system such as in under pavement vault application.\u003c\/p\u003e\n\u003cp\u003eIn a semi sealed system, the cavity between membrane and substrate can be vented into the room space with passive vents or if this is not possible, it can be vented through the external wall using a 150 x 225 air brick inserted every 1.5M to 2.0M along the wall.\u003c\/p\u003e\n\u003cp\u003eIt is important that the cavity between the membrane and internal finish i.e. dry lining is not vented so as to avoid possible interstitial condensation. However, consideration should be given to the risk of condensation forming within the room itself and the introduction of a humidistat controlled extract fan should therefore be recommended.\u003c\/p\u003e\n\u003cp\u003eRefer to BS8102 (2009) Table 2 for further reference. Part F of Building Regulations concerning ventilation in basements.\u003c\/p\u003e\n\u003ch5\u003eFinishing\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eWall Finishes:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIf timber battens are to be used, the traditional method is to fix a vertical batten 25mm x 50mm.\u003c\/p\u003e\n\u003cp\u003eThe Brick Plugs in this instance should be fixed at 400mm centres horizontally and 600mm centres vertically. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-brick-plugs-with-seals\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton \u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-brick-plugs-with-seals\" target=\"_blank\"\u003e\u003cstrong\u003eBrick Plugs\u003c\/strong\u003e\u003c\/a\u003e will take 25mm of screw, so be sure to purchase the correct length for the thickness of batten.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNB:\u003c\/strong\u003e We would however, recommend that foil back plasterboard be used to prevent interstitial condensation forming in the cavity.\u003c\/p\u003e\n\u003cp\u003eFor a metal fast track dry lining system such as Gypliner or Lafarge, the brick plugs should be fixed at 600mm centres horizontally and 800mm centres vertically. If an independent timber or metal frame system is to be used, the wall membrane can be ‘curtain hung’. The membrane is simply dressed down the walls just like hanging a curtain or sheet. This method of installation requires less fixings.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNOTE:\u003c\/strong\u003e We would however, recommend that foil back plasterboard be used to prevent interstitial condensation forming in the cavity.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFloor Finishes:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThere is a wide choice of floor coverings that can be laid on top of Platon floor membranes\u003c\/p\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:5px 13px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:5px 13px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-6q21{font-weight:bold;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n.tg .tg-h2je{background-color:#ffffff;color:#333333;border-color:#000000}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-6q21\"\u003ePlaton P8 (Wood Based Flooring)\u003c\/td\u003e\n\u003ctd class=\"tg-h2je\"\u003eFlooring Grade T \u0026amp; G Chipboard, Parquet, Laminate, Wood Strip\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-6q21\"\u003ePlaton P8 (Sand \/ Cement Screeds)\u003c\/td\u003e\n\u003ctd class=\"tg-h2je\"\u003e\n\u003cp\u003e\u003cstrong\u003eDomestic:\u003c\/strong\u003e Minimum 50mm screed or 20mm reinforced polymer modified self-levelling screed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eIndustrial:\u003c\/strong\u003e Minimum 75mm reinforced screed or 35mm reinforced polymer modified self-levelling screed.\u003c\/p\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003eInsulation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor Platon Membrane applied to walls at or above ground level, the maximum insulation thickness should be 50mm.\u003c\/p\u003e\n\u003cp\u003eWhen Platon membrane is applied to earth retaining walls full height of a basement, there is no upper limit to insulation thickness. However, if Platon Membrane is applied to part earth retaining walls, then the maximum insulation thickness should be 50mm.\u003c\/p\u003e\n\u003cp\u003eThere is no upper limit to insulation thickness for Platon Membrane applied to solid floors at ground or below ground level.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCurved Soffits and Vaulted Rooms:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen working in a conventional vault with rounded ceilings the water can run off freely and the following method should be adopted:\u003c\/p\u003e\n\u003cp\u003eWhen lining vaults always work from the front to the back, starting on the centre line of the vault. Measure the length of the vault and add 400mm to this measurement, then cut the membrane to the length.\u003c\/p\u003e\n\u003cp\u003eForm a 900 downturn crease 200mm in from either end of the membrane and prepare the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-brick-plugs\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e by wrapping with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing\u003c\/strong\u003e\u003cstrong\u003e Rope\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eOffer the membrane up to the vault ceiling along the centre line of the vault, and drill and hammer home the fixing plugs in a straight line at 600mm centres from front to rear. These will provide fixing points for the dry lining system.\u003c\/p\u003e\n\u003cp\u003eThe creased downturn at either end of the vault will start to deform going into the curvature of the vault ceiling. Where this occurs, carefully slit \/ cut the deformed sections towards the crease but stop short of the crease by one stud.\u003c\/p\u003e\n\u003cp\u003eThe membrane can now be overlaid and will flatten out and follow the curvature. Several slits may be required to achieve this depending on the radius of the vault.\u003c\/p\u003e\n\u003cp\u003eContinue to work out from the first sheet, ensuring a weathered joint of not less than eight studs. The flange should be used to make both of these weathered joints either side of the initial membrane fixed off the central line of the vault. \u003c\/p\u003e\n\u003cp\u003eThe weathered joints are sealed flange over stud using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eAll the sheets running from front to back of the vault are cut overall length of vaulted soffit. This should give coverage to the vault, past the springing line down to the floor slab line, together with a 200mm return to either end of the vault.\u003c\/p\u003e\n\u003cp\u003eThe end walls are now ready to be lined with the membrane. The end wall sections are cut to the true width of the vault so that the membrane overlaps the membrane returns already formed. These sections of membrane are fixed and sealed in exactly the same way as described for wall application. The end wall membrane stud to stud joint should be sealed around the radius with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-membrane-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Sealing Rope\u003c\/strong\u003e\u003c\/a\u003e and if necessary \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platon-corner-strip-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Corner Strip\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe floor membrane is now ready to be laid over the completed drainage system.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_CAVITY_DRAIN_MEMBRANE_TECH_2.pdf?2407904986456654867\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_CAVITY_DRAIN_MEMBRANE_TECH_2.pdf?2407904986456654867\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_TECH_da9f56ab-0d74-457d-802a-273766c577de_small.jpg?v=1524826268\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_2021.pdf?v=1637675411\" target=\"_blank\"\u003e\u003cstrong\u003eSystem Platon Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_2021.pdf?v=1637675411\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_small.jpg?v=1524826278\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_CAVITY_DRAIN_SYSTEMS_BROCHURE.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Cavity Drain Systems Brochure\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_CAVITY_DRAIN_SYSTEMS_BROCHURE.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_CAVITY_DRAIN_SYSTEMS_BROCHURE_100x100.jpg?v=1573644582\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_BBA_37670d6b-16fb-40d8-996e-715d80ca9246.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_BBA_37670d6b-16fb-40d8-996e-715d80ca9246.pdf?1297\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_BBA_29216527-e3a9-4294-8523-3d8d24ed2641_100x100.jpg?v=1573644600\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_DOP.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_DOP.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_DOP_100x100.jpg?v=1573644612\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_NBS_ENTRY.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003eNBS Plus Product Entry\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_NBS_ENTRY.pdf?1297\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_P8_NBS_100x100.jpg?v=1573644622\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Isola","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":7653434785822,"sku":"TT09","price":135.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 5M (10M²)","offer_id":8157967941731,"sku":"TT09-05","price":62.5,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":8157971546211,"sku":"TT09-10","price":91.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platon-p8-basement-tanking-membrane-8mm-stud-w-2-07m-x-l-20m-40m-waterproof-membranes-661.webp?v=1780915267"},{"product_id":"basement-floor-membrane-newton-520","title":"Newton CDM 520 Eco Floor Membrane - 20mm Studded Waterproof Floor Membrane","description":"\u003cp\u003e\u003cspan\u003eNewton 520 is a High Quality, \u003cstrong\u003eBBA Approved\u003c\/strong\u003e, 20mm Stud Basement Tanking Floor Membrane.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eOne of the main constituent parts of 'Newton System 500', Newton 520 is used for the waterproofing of floors within earth retained structures, that includes drainage channels sited below the membrane for increased drainage capacity.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\"\u003e  Newton 520 is supported by BBA Certification Certificate Number 94\/3010.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eAvailable in \u003cstrong\u003e(W) 2.07M x (L) 10M (20M²)\u003c\/strong\u003e and \u003cstrong\u003e(W) 2.07M x (L) 20M (40M²)\u003c\/strong\u003e Rolls.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003eNewton 520 Cavity Drain Floor Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eNewton 520 is a Cavity Drain Waterproofing Membrane made from recycled High Density Polyethylene (HDPE).\u003c\/p\u003e\n\u003cp\u003eIt is one of the main constituent parts of \u003cstrong\u003eNewton System 500\u003c\/strong\u003e, Newton's BBA Certified, ‘Type C’ Cavity Drain System, used for waterproofing of floors within earth retained structures, that includes drainage channels sited below the membrane for increased drainage capacity.\u003c\/p\u003e\n\u003cp\u003eWith its 20mm deep stud profile, Newton 520 is used within Newton System 500 as a high drainage capacity floor membrane and is generally specified where it is anticipated that there may be a risk of severe water penetration.\u003c\/p\u003e\n\u003cp\u003eNewton 520 is guaranteed against deterioration for 30 years, with a life expectancy of at least the design life of the building (DIN 9001:2000).\u003c\/p\u003e\n\u003cp\u003eNewton 520 is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalies, saline solutions and organic acids, and not affected by minerals and hydro-carbons. It is also impervious to root penetration, is rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eSpeed of installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eMade from 100% recycled HDPE\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProvides vapour control and, when used with humidity control systems and is capable of delivering an environment to all levels within a Grade 3 environment to BS 8102:2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eResistant to rot, chemically aggressive groundwater, acids and alkalines, efflorescing salts and hydrocarbon contamination\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:4px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:4px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-tt9e{font-weight:bold;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n.tg .tg-p4un{font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#333333;border-color:#000000;text-align:center}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMembrane Material\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eHDPE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMembrane Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e1.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eStud Depth\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e19.0mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eDensity\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e1000g\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eVicat Softening Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e126°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eService Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e-40°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCompressive Strength (EN 25619-2)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e240 kpa\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eThermal Conductivity (EN12667)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e0.461 W\/mK\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Resistance - Sd Value (BS EN 1931)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;604m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Resistance - μ Value\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;1208000μ\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eWater Vapour Diffusion Resistance\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u0026gt;3020 MNs\/g\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eResistance to Fire (BS EN 13501-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eEuroClass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eChemical Resistance - Excellent (EN 14030)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eOxidation Resistance - Excellent (EN ISO 13438)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e100%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eRadon Gas Resistance - Membrane* (K124\/02\/95)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eRadon Gas Resistance - Joints* (K124\/02\/95)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eResistance to Liquid Hydrocarbons* (EN 16140:2011)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCarbon Dioxide Permeability*\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMethane Permeability*\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eCarbon Dioxide Transmission Rate (ISO 15105-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003e\u003cspan\u003eN\/A\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-tt9e\"\u003eMethane Transmission Rate (ISO 15105-1)\u003c\/td\u003e\n\u003ctd class=\"tg-p4un\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch6\u003e\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003cbr\u003e\n\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton 520 should only be used on floors. Before the system is installed, the area must be assessed to determine what preparation is required:\u003c\/p\u003e\n\u003cp\u003eAll timber and other organic material must be removed to prevent risk of fungal or bacterial growth behind the System. If evidence of rot exists, this must be dealt with by a specialist contractor prior to installation of the system (See our \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/dry-rot-wood-treatment\" target=\"_blank\"\u003e\u003cstrong\u003eWoodworm \u0026amp; Dry Rot Control\u003c\/strong\u003e\u003c\/a\u003e Products).\u003c\/p\u003e\n\u003cp\u003eBrush the floor clean and remove any sharp protrusions. Fill all non-structural cracks above 1mm wide, all structural cracks should be repaired or treated.\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e which prevents free lime from the curing concrete being drawn out by ingressing water.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen used in a full or part earth-retaining situation, the membrane system must be drained. To comply with BS 8102:2009, you must assume that the structure will be subjected to water ingress at some time.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMethods Of Drainage:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe drainage must effectively remove all water from below the membrane and take the water to a point of discharge such as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSump Chamber\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor a form of safe natural drainage. Standing water can block the membrane with silt or lime scale so it is important for water to flow uninterrupted to the drainage point.\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\" target=\"_blank\"\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eNewton Basedrain Drainage Channel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Basedrain\u003c\/strong\u003e\u003c\/a\u003e is placed at the wall \/ floor junction and collects water from behind the wall membrane and receives water at the wall \/ floor junction. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Basedrain\u003c\/strong\u003e\u003c\/a\u003e is a designed method of removing water as it can interface with sump chambers, gullies, waste pipes etc.\u003c\/p\u003e\n\u003cp\u003eIt can also be maintainable by inserting \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\/products\/newton-basedrain-flexible-jetting-eye\" target=\"_blank\"\u003eJetting Eyes\u003c\/a\u003e \u003c\/strong\u003einto the system. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIt is very rare for water to pass through a solid concrete slab or concrete raft, but where the slab or raft is of questionable quality it is possible for water to pass through cracks in a poorly constructed floor. If the quality of the slab is questionable, Newton 520 should be used as the floor membrane.\u003c\/p\u003e\n\u003cp\u003eStarting at one side of the room, unroll the membrane with the studs down and cut to fit the room as one would a carpet. The next membrane width is rolled out so that the flanged edge overlaps onto the edge of the previous roll of membrane. Clean both edges.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Waterseal Tape\u003c\/strong\u003e\u003c\/a\u003e is then applied to the high flat area between the first two studs at the edge of the previous roll of membrane with the backing paper still intact.\u003c\/p\u003e\n\u003cp\u003eCheck the two widths for alignment, with the flange covering the backing paper.\u003c\/p\u003e\n\u003cp\u003eStarting from the end of the joint, remove the backing paper and press down on the joint sealing the two sections together. This process is repeated until all areas are covered. Seal the Newton 520 Membrane to the up-stand of the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Basedrain\u003c\/strong\u003e\u003c\/a\u003e perimeter drainage channel with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Overtape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eWhere the floor membrane is required to be jointed to horizontal DPC’s through internal and external walls, these joints should be sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Waterseal Tape\u003c\/strong\u003e\u003c\/a\u003e. Ensure both surfaces are clean and dry before attempting to make these joints.\u003c\/p\u003e\n\u003cp\u003eIf there are any services up through the floor, the membrane can be cut and trimmed around them, and the gap filled and sealed using a high quality \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/hybrid-polymer\" target=\"_blank\"\u003e\u003cstrong\u003eHybrid Polymer Adhesive\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIf necessary, a patch of membrane or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" target=\"_blank\"\u003e\u003cstrong\u003ePlain DPC\u003c\/strong\u003e\u003c\/a\u003e is laid over and sealed to the service with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" target=\"_blank\"\u003e\u003cstrong\u003eWaterseal Rope\u003c\/strong\u003e\u003c\/a\u003e, and around its perimeter with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWaterseal Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIt should be noted that protrusions through the floor slab\/raft should be avoided wherever possible as they create weaknesses that allow unnecessary water ingress.\u003c\/p\u003e\n\u003cp\u003eThe specified floor finish can now be laid directly over the floor membrane, which must not be punctured by any fixings through the floor. When a timber floor finish is preferred you must allow an expansion gap around the wall edge.\u003c\/p\u003e\n\u003cp\u003eSpeak to the supplier of the floor finish to confirm the correct size of this expansion gap.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_TECH_14aaedd4-d32b-42e6-9136-342cb7887e56.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_TECH_14aaedd4-d32b-42e6-9136-342cb7887e56.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_TECH_small.jpg?v=1524826233\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_small.jpg?v=1523898741\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_DOP.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_DOP.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_DEC_OF_PERFORMANCE_small.jpg?v=1524826239\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_BBA_40862b2b-2882-4cdf-9dac-979e1a097130.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_BBA_40862b2b-2882-4cdf-9dac-979e1a097130.pdf?17313703094795720291\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_520_BBA_small.jpg?v=1524826252\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":7653454970910,"sku":"NM4","price":225.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":8169905553507,"sku":"NM13","price":132.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-520-eco-floor-membrane-20mm-studded-waterproof-w-2-07m-x-l-20m-40m-basement-membranes-884.webp?v=1780915376"},{"product_id":"platon-plaster-base-tanking-membrane","title":"Platon Plaster Base - Tanking Membrane (5mm Stud)","description":"\u003cp\u003ePlaton Plaster Base is a \u003cstrong\u003eBBA Approved\u003c\/strong\u003e, 5mm stud, Tanking Membrane for use in both internal Basement Waterproofing and above ground Damp Proofing specifications.\u003c\/p\u003e\n\u003cp\u003eDespite not having a mesh surface, \u003cspan\u003ePlaton Plaster Base allows for \u003cstrong\u003edirect application\u003c\/strong\u003e of sand \/ cement renders and most Lightweight and Renovating Plasters. \u003c\/span\u003eThe substrate remains visible through the clear membrane for precise fixing.\u003c\/p\u003e\n\u003cp\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\" alt=\"\"\u003e\u003cspan\u003e  Platon Plaster Base is supported by \u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_BBA.pdf?10782345335459962040\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certification Certificate Number 01\/3823\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAvailable in \u003cstrong\u003e20M²\u003c\/strong\u003e and \u003cstrong\u003e40M² \u003c\/strong\u003eRolls.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Info_Icon_394c7338-3fdd-4f82-9dbb-971567ab58c8_32x32.jpg?v=1583505451\" alt=\"\"\u003e\u003cspan\u003e  \u003c\/span\u003e\u003c\/strong\u003eRead our Guide on \u003cstrong\u003e\u003cspan\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/blogs\/news\/how-to-damp-proof-walls\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/blogs\/news\/how-to-damp-proof-walls\" target=\"_blank\"\u003e'How To Identify \u0026amp; Treat Rising Dampness On Walls'\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003ePlaton Plaster Base Cavity Drain Damp Proofing Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003ePlaton Plaster Base is a \u003c\/span\u003eCavity Drain Damp Proofing Membrane for internal use.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eThe unique patented undercut stud is 'dovetail' shaped which provides a physical key for plaster and render or allows for the direct application of plasterboard on adhesive dabs\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eThis is of particular benefit where space constraints prevent the use of timber or metal frame drylining, the installation of a blockwork liner wall or where a direct render or plaster finish is preferred, i.e a vaulted ceiling. \u003c\/p\u003e\n\u003cp\u003ePlaton Plaster Base can be used to deal with and provide isolation from Rising or Penetrating Damp, Salt Contamination and Running Water (when used in conjunction with the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/platon%C2%AE-aqua-channel-drainage-system\" target=\"_blank\"\u003e\u003cstrong\u003eAqua Channel Drainage System\u003c\/strong\u003e\u003c\/a\u003e, \u003cstrong\u003e\u003cspan style=\"float: none; background-color: transparent; color: #000000; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant: normal; letter-spacing: normal; line-height: 21px; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px; display: inline !important;\"\u003ePlaton\u003c\/span\u003e\u003cspan style=\"float: none; background-color: transparent; color: #000000; font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif; font-size: 15px; font-style: normal; font-variant: normal; letter-spacing: normal; line-height: 21px; orphans: 2; text-align: left; text-decoration: none; text-indent: 0px; text-transform: none; -webkit-text-stroke-width: 0px; white-space: normal; word-spacing: 0px; display: inline !important;\"\u003e \u003c\/span\u003eP20\u003c\/strong\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane\/products\/isola-platon-p8-cavity-drain-waterproof-basement-membrane\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton P8\u003c\/strong\u003e\u003c\/a\u003e (when P8 is used used as the Floor Membrane) and Triton \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/triton-aqua-pump-and-aqua-pump-plus\" target=\"_blank\"\u003e\u003cstrong\u003eAqua Pump \u0026amp; Sump Systems\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eWhen used within a fully designed and specified waterproofing design, Platon Plaster Base can provide a Grade 3 environment, as laid out in BS8102:2009.\u003c\/p\u003e\n\u003cp\u003ePlaton Plaster Base is for use above or below ground and unlike wet or liquid applied forms of ‘tanking’ it can be worked on immediately after installation without waiting for drying or curing to occur.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Info_Icon_394c7338-3fdd-4f82-9dbb-971567ab58c8_32x32.jpg?v=1583505451\" alt=\"\"\u003e\u003cspan\u003e  Read our Guide on \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/blogs\/news\/how-to-damp-proof-walls\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/blogs\/news\/how-to-damp-proof-walls\" target=\"_blank\"\u003e'How To Identify \u0026amp; Treat Rising Dampness On Walls'\u003c\/a\u003e\u003c\/span\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eProduct Benefits:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eNo extensive preparation of structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater is directed behind the membrane to a drain channel for gravity drainage or a sump for pumped discharge\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eIngressing water is de-pressurized and managed within the system and not diverted to other areas\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eComplete freedom of choice of wall finishes\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eRapid and straightforward installation\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eImpermeable to water and water vapour\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eReliable ‘Type C’ Waterproofing\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg {border-collapse:collapse;border-spacing:0;} .tg td{font-family:Arial, sans-serif;font-size:14px;padding:6px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;} .tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:6px 20px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;} .tg .tg-afp5{font-weight:bold;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;text-align:center} .tg .tg-7xwo{font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;text-align:center} .tg .tg-5j4b{font-weight:bold;background-color:#ffffff;text-align:center;vertical-align:top} .tg .tg-i81m{background-color:#ffffff;text-align:center;vertical-align:top} @media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"tg-afp5\"\u003eMambrane Material\u003c\/th\u003e\n\u003cth class=\"tg-7xwo\"\u003eHigh Density Polyethylene (HDPE)\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-5j4b\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-i81m\"\u003e0.50mm Approx.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-afp5\"\u003eStud Height\u003c\/td\u003e\n\u003ctd class=\"tg-7xwo\"\u003e5mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-5j4b\"\u003eRoll Weight\u003c\/td\u003e\n\u003ctd class=\"tg-i81m\"\u003e19.2 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-5j4b\"\u003eAir Gap Volume\u003c\/td\u003e\n\u003ctd class=\"tg-i81m\"\u003e3.2L\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-afp5\"\u003eDrainage Capacity\u003c\/td\u003e\n\u003ctd class=\"tg-7xwo\"\u003e1.84L\/m²\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlaton Plaster Base can be applied to retained sound renders, brickwork, blockwork, stone or concrete. The quality and appearance of the applied finishes will be a direct reflection of the underlying substrate.\u003c\/p\u003e\n\u003cp\u003eAll surfaces must be of a sound, firm nature and any loose areas should be removed prior to application. Uneven, loose, or soft brick\/stonework may need to be dubbed out to level off and stabilise the background. Retaining sound cement render can be a good option if the substrate underneath is known to be in poor condition.\u003c\/p\u003e\n\u003cp\u003eGypsum based plaster, wallpaper and any buried timber must be removed as these materials can deteriorate over time and in the presence of moisture.  Where necessary a \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/masonry-biocide-dry-rot-treatments\" target=\"_blank\"\u003e\u003cstrong\u003efungicide wash\u003c\/strong\u003e\u003c\/a\u003e should be applied to the wall surface. Platon Plaster Base should not be used on floors.\u003c\/p\u003e\n\u003cp\u003eRemove loose and soft plaster \/ render, wallpaper and embedded timbers. Dub out voids, hollows and loose areas of masonry using a cement mortar. Offer up the membrane, hollow studs facing into the room, and fix in place using sealed \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane-plugs-fixings\/products\/platinum-plaster-membrane-fixing-plugs\" target=\"_blank\"\u003e\u003cstrong\u003ePlaster Plugs\u003c\/strong\u003e\u003c\/a\u003e (Sealed using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane-tapes\/products\/platinum-waterseal-rope-8mm-x-6m-roll\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Rope\u003c\/strong\u003e\u003c\/a\u003e).\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication Method:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePull the membrane as tightly as possible against the structure to minimise hollow areas behind as these can interfere with the application of plaster or plasterboard.\u003c\/p\u003e\n\u003cp\u003eUse a minimum of \u003cstrong\u003e13 fixings per square metre\u003c\/strong\u003e, spaced out in a regular ‘diamond’ pattern no more than 250mm apart. Drill through the membrane in the centre of a 4 stud cluster, rather than through the stud itself. In some cases, additional fixings may be required in order to produce a stable and tight membrane layer.\u003c\/p\u003e\n\u003cp\u003eFit the membrane tightly into and around corners to avoid damage when applying finishes.\u003c\/p\u003e\n\u003cp\u003ePlaton Plaster Base is joined by overlapping adjacent sheets by a minimum of 2 studs. Fix the Fixing Plugs as close as possible to the edge of the membrane. Fixings should be made at 150mm centres along the joint. Once all fixings are in place, clean the membrane surface thoroughly and ensure it is dry and free from dust.\u003c\/p\u003e\n\u003cp\u003eApply a \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane-tapes\/products\/platinum-mesh-tape-fleece-band\" target=\"_blank\"\u003e\u003cstrong\u003eMesh Tape\u003c\/strong\u003e\u003c\/a\u003e along the joint with equal overlaps onto each sheet of membrane and press firmly into place. If for some reason the membrane edges are in tension or are likely to try and pull apart, reinforce the joint with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane-tapes\/products\/platinum-basement-membrane-overtape\" target=\"_blank\"\u003e\u003cstrong\u003eCorner Strip\u003c\/strong\u003e\u003c\/a\u003e before applying the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/cavity-drain-membrane-tapes\/products\/platinum-mesh-tape-fleece-band\" target=\"_blank\"\u003e\u003cstrong\u003eMesh Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch5\u003eFinishing\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eFinishing:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eMost common Lightweight and Renovating Plasters (Tarmac Whitewall) or sand \/ cement renders can be applied to Platon Plaster Base. (The use of British Gypsum Hardwall or Tuff Coat is not recommended). When using sand \/ cement renders, mixes of 1 part cement to 6 parts washed plastering sand, incorporating either \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/sbr-bonding-agent-additive\" target=\"_blank\"\u003e\u003cstrong\u003eSBR\u003c\/strong\u003e\u003c\/a\u003e or Hydrated Lime should be used. NB Grade ‘M’; medium sharp sand should be used. \u003cstrong\u003eDo not use soft or building sand. \u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eAll renders \/ plasters should be applied in a minimum of two coats, allowing the 1st coat of 7mm - 10mm to be trowelled firmly into the membrane studs and then scratched to provide a key for subsequent coats to be applied. The first scratch coat should be left to cure and harden. Ideally this should be 7 - 10 days depending on site \u0026amp; atmospheric conditions.\u003c\/p\u003e\n\u003cp\u003eDo not allow the plaster or render to dry out too quickly or cracking may occur. The minimum plaster thickness should be 15mm and the maximum thickness (sand \/ cement 30mm) (lightweight plasters 40mm).\u003c\/p\u003e\n\u003cp\u003ePlasterboard can be bonded using regular ‘dab’ adhesive or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/plasterboard-adhesive-foam\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/plasterboard-adhesive-foam\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eLow Expansion PU\u003cspan data-mce-fragment=\"1\"\u003e \u003c\/span\u003eFoam Adhesive\u003c\/strong\u003e\u003c\/a\u003e. Apply the adhesive over the heads of the fixing plugs and ensure that 50% of the membrane area is also covered. This ensures that direct ‘through’ contact is made between the plasterboard and the masonry substrate.\u003c\/p\u003e\n\u003cp\u003ePlasterboard fixed in this way can be skimmed the next day and painted or wallpapered a few days after that. Drying times are very much reduced when compared to ‘wet’ systems.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_TECH.pdf?16033061579009814366\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_TECH.pdf?16033061579009814366\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_TECH_small.jpg?v=1522766446\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_2021.pdf?v=1637675411\" target=\"_blank\"\u003e\u003cstrong\u003eSystem Platon Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_2021.pdf?v=1637675411\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_MANUAL_small.jpg?v=1524826278\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_BBA.pdf?16033061579009814366\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_BBA.pdf?16033061579009814366\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATON_PLASTER_BASE_BBA_small.jpg?v=1522766449\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Isola","offers":[{"title":"(W) 2.0M x (L) 20M - (40M²)","offer_id":8001539407902,"sku":"TT07","price":197.0,"currency_code":"GBP","in_stock":false},{"title":"(W) 2.0M x (L) 10M - (20M²)","offer_id":8001539375134,"sku":"TT07-10","price":110.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platon-plaster-base-tanking-membrane-5mm-stud-w-2-0m-x-l-20m-40m-basement-waterproof-membranes-540.webp?v=1780916473"},{"product_id":"newton-cdm-508-mesh-membrane-8mm-cavity-drain","title":"Newton CDM 508 MESH Membrane - 8mm Studded Waterproof MESHED Membrane","description":"\u003cp\u003eNewton CDM 508 Mesh Membrane is an 8mm studded meshed cavity drain waterproofing membrane designed for use within the Newton CDM System, an internally applied Type C waterproofing system for below-ground structures.\u003c\/p\u003e\n\u003cp\u003eIt is suitable for waterproofing earth-retained walls, vaulted soffits, vaults and tunnels, where water ingress needs to be managed behind the membrane and directed towards a suitable drainage and pumping system. The membrane incorporates a strong polyethylene mesh thermally welded to the face during manufacture, providing a key for direct plaster or render finishes. Newton CDM 508 Mesh is inert, rot-proof, non-polluting to drinking water and resistant to water, alkalis, saline solutions, organic acids, minerals, hydrocarbons, bacteria, fungi and small organisms.\u003c\/p\u003e\n\u003cp\u003eIt is supported by \u003cstrong\u003eBBA Agrément Certificate 22\/6357\u003c\/strong\u003e, guaranteed against deterioration for 30 years and has a life expectancy equal to the design life of the building when correctly installed and protected.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features of Newton \u003cspan\u003eCDM \u003c\/span\u003e508 Mesh Membrane\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ 8mm studded meshed cavity drain membrane manages water ingress behind direct plaster or render finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Thermally welded polyethylene mesh provides a strong key for plaster or render without separate dry-lining.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for basements, retaining walls, vaulted soffits, vaults and tunnels requiring Type C waterproofing.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Rot-proof, inert and chemically resistant for long-term concealed use in damp below-ground environments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified with 30-year deterioration guarantee and building life expectancy when correctly installed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e8mm Mesh Cavity Drain Membrane For Basement Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 Mesh Membrane is a high quality 8mm studded cavity drain membrane with an integrated meshed face, designed for use as part of the Newton CDM System in below-ground waterproofing applications. As a Type C drained protection system component, it does not rely on blocking water directly at the face of the structure. Instead, the 8mm stud profile creates a cavity between the membrane and the substrate, allowing moisture or water ingress to be managed behind the membrane and directed towards a suitable drainage channel, sump and pump arrangement where required. This makes Newton CDM 508 Mesh a dependable choice for basements, cellars, vaults, tunnels, retaining walls and vaulted soffits requiring controlled internal drainage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDirect Plaster And Render Finishes With A Built-In Mesh Key\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe key difference between Newton CDM 508 Mesh and a standard non-meshed cavity drain membrane is its thermally welded polyethylene mesh, which is fixed to the face of the membrane during manufacture. This meshed surface provides a mechanical key for plaster and render, allowing suitable internal finishes to be applied directly to the membrane in appropriate applications. This makes the product especially useful where the wall build-up needs to remain as slim as possible, or where a direct plastered or rendered finish is preferred over an independent dry-lining frame. The integrated mesh helps the finishing coat bond to the membrane face, while the studded rear profile continues to maintain the drainage cavity behind.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned For Earth-Retained Walls, Vaults And Tunnels\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 Mesh is suitable for use on earth-retained walls and vaulted soffits, and may also be used in vaults and tunnels as part of a correctly designed Newton CDM waterproofing system. It is particularly suited to below-ground structures where the internal waterproofing system must manage moisture while also supporting a direct plaster or render finish. Unlike some direct-applied waterproofing systems, it does not usually require extensive and potentially damaging preparation to the wall surface, although the background must still be stable, suitably prepared, free from loose or organic material and capable of receiving secure fixings. Correct detailing remains essential to ensure the membrane forms part of a reliable, continuous waterproofing system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eComplete Type C Waterproofing System Compatibility\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eAs with any cavity drain membrane system, Newton CDM 508 Mesh must be used as part of a complete drained protection design that safely collects, controls and removes water. The membrane is mechanically fixed to the structure, with joints, corners, protrusions and terminations detailed using compatible Newton CDM tapes, ropes and ancillary products. The drainage provision is a critical part of the overall system, as the membrane is designed to manage water behind the finished surface rather than act as a standalone barrier. When correctly specified within the Newton CDM System, it provides a practical and professional solution for basement conversions, structural waterproofing upgrades and below-ground refurbishment projects where long-term moisture control is required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable, Inert And Suitable For Grade 3 Environments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 Mesh is manufactured from inert material that is non-polluting to drinking water and resistant to a wide range of substances commonly found in below-ground structures. It is highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons. The membrane is also rot-proof and resistant to bacteria, fungi and small organisms, making it suitable for long-term concealed use in damp and below-ground environments. When correctly specified and installed as part of the Newton CDM System, Newton CDM 508 Mesh can help deliver internal environments up to Grade 3 under BS 8102:2022, suitable for dry habitable below-ground spaces.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_508_Mesh_4_1024x1024.jpg?v=1782905646\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIntegrated Mesh Surface For Direct Finishes: \u003c\/strong\u003eThe polyethylene mesh is thermally welded to the face of the membrane during manufacture, providing a key for suitable plasters and renders. This allows the wall finish to be applied directly over the membrane in appropriate applications, reducing the need for an independent lining system where a direct finish is specified.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8mm Cavity Drain Profile: \u003c\/strong\u003eThe studded rear profile creates an 8mm drainage cavity between the membrane and the substrate. This allows water ingress or moisture behind the membrane to be controlled and directed towards a suitable drainage and pumping system, rather than being trapped behind the internal finish.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable For Below-Ground Waterproofing: \u003c\/strong\u003eNewton CDM 508 Mesh is designed for earth-retained walls, vaulted soffits, vaults and tunnels as part of a Type C drained protection system. It is suitable for basement waterproofing, cellar conversions and other below-ground structures where water ingress needs to be managed internally.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Of The Newton CDM System: \u003c\/strong\u003eThe membrane is used with compatible Newton CDM drainage channels, sump and pump systems, fixing plugs, sealing tapes and ancillary products. This allows the membrane to form part of a complete waterproofing system rather than being treated as a standalone barrier.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Surface Preparation Requirements: \u003c\/strong\u003eUnlike many directly bonded tanking systems, Newton CDM 508 Mesh does not generally require extensive or damaging preparation to the wall surface. The structure must still be made suitable for fixing, but the membrane system can often be installed over backgrounds that would be difficult to prepare for direct-applied coatings.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResistant To Rot And Biological Attack: \u003c\/strong\u003eThe membrane is rot-proof and resistant to bacteria, fungi and small organisms. This helps it remain stable in damp, enclosed and below-ground environments where organic materials or vulnerable finishes could deteriorate over time.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChemical And Moisture Resistance: \u003c\/strong\u003eNewton CDM 508 Mesh is highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons. This makes it suitable for use against masonry and concrete substrates where salts, moisture and ground contaminants may be present.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong-Term Durability: \u003c\/strong\u003eThe membrane is guaranteed against deterioration for 30 years and has a life expectancy equal to the design life of the building when correctly installed, protected and used as part of the correct system. This makes it suitable for long-term waterproofing specifications rather than short-term remedial work.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupports Grade 3 Internal Environments: \u003c\/strong\u003eWhen correctly designed and installed as part of the full Newton CDM System, Newton CDM 508 Mesh can contribute to an internal environment up to Grade 3 under BS 8102:2022, which is the level generally required for habitable below-ground spaces.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePractical For Habitable Areas: \u003c\/strong\u003eBecause the membrane provides both cavity drainage and a plaster\/render key, it is particularly useful in internal spaces where the waterproofing system needs to be incorporated into the final wall build-up without unnecessarily increasing the wall thickness.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing: \u003c\/strong\u003eNewton CDM 508 Mesh is suitable for basement waterproofing systems where earth-retained walls require a drained cavity membrane and a direct plaster or render finish. It helps manage water ingress behind the membrane while providing a suitable face for internal finishing.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions: \u003c\/strong\u003eThe membrane can be used in cellar conversion projects where damp or water-bearing walls need to be isolated from the internal finish, while allowing the space to be upgraded for dry, usable or habitable purposes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Walls: \u003c\/strong\u003eSuitable for use on below-ground retaining walls where moisture pressure, dampness or water ingress may be present. The membrane creates a drainage cavity and separates the internal finish from the damp substrate.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Soffits: \u003c\/strong\u003eNewton CDM 508 Mesh can be used on vaulted soffits where a meshed cavity drain membrane is required to manage moisture and provide a plasterable or renderable surface over the waterproofing system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaults And Tunnels: \u003c\/strong\u003eSuitable for vaults, tunnels and similar below-ground structures where the substrate may be damp, uneven or water-bearing, and where an internally applied cavity drain waterproofing system is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInternal Refurbishment Of Damp Structures:\u003c\/strong\u003e Useful in older buildings where walls may be salt contaminated, damp or difficult to prepare for direct-applied waterproofing. The membrane helps isolate the new finish from the existing substrate while allowing moisture to be managed behind the system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHabitable Below-Ground Rooms: \u003c\/strong\u003eWhen used as part of a correctly designed Newton CDM System, including suitable drainage and ventilation, Newton CDM 508 Mesh can help create the dry internal conditions required for habitable spaces.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProjects Requiring Direct Plaster Or Render: \u003c\/strong\u003eSuitable where a meshed waterproofing membrane is required so that plaster or render can be applied directly over the membrane face, subject to the correct specification and finishing method.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefurbishment Where Space Is Limited:\u003c\/strong\u003e The ability to apply suitable plaster or render directly to the meshed face can be useful where an independent dry-lining frame would take up too much internal space.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproofing Systems With Drainage And Pumping: \u003c\/strong\u003eUsed as part of a complete drainage and pumping arrangement where water ingress needs to be collected, directed and discharged safely from the structure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Agrément Certificate 22\/6357: \u003c\/strong\u003eNewton CDM 508 Mesh is supported by BBA Agrément Certificate 22\/6357, providing independent assessment for its use within defined waterproofing applications. This gives specifiers, contractors and installers recognised third-party certification for the product when used in accordance with the relevant system guidance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Grade 3 Environment: \u003c\/strong\u003eWhen used as part of a correctly designed and installed Newton CDM System, Newton CDM 508 Mesh is capable of contributing to internal environments up to Grade 3 under BS 8102:2022. Grade 3 is generally associated with dry habitable below-ground spaces where no dampness is acceptable.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e30-Year Guarantee Against Deterioration:\u003c\/strong\u003e Newton CDM 508 Mesh is guaranteed against deterioration for 30 years, provided it is installed and protected correctly as part of the appropriate system. This relates to the durability of the membrane material itself and should not be confused with the overall waterproofing guarantee, which is normally provided by the specialist waterproofing contractor.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Life Of The Building: \u003c\/strong\u003eThe membrane has a stated life expectancy equal to the design life of the building when used correctly. This means it is intended as a long-term concealed waterproofing component within the structure, rather than a temporary damp proofing measure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNon-Polluting To Drinking Water: \u003c\/strong\u003eNewton CDM 508 Mesh is inert and non-polluting to drinking water, indicating that the membrane material is stable and does not release harmful contamination into water. This supports its use in demanding construction environments where inert, durable materials are required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh performs by combining the drainage function of an 8mm studded cavity drain membrane with the finishing capability of a thermally welded mesh face. The studded profile creates a cavity behind the membrane so water ingress can be managed and directed towards the drainage system, while the mesh surface provides a key for plaster or render. This dual function is particularly beneficial in habitable below-ground areas where both waterproofing performance and a direct internal finish are required.\u003c\/p\u003e\n\u003cp\u003eThe membrane’s resistance profile is important for long-term below-ground use. It is highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons. These properties are useful because basement and retaining wall environments can contain moisture, salts and contaminants that may affect less durable materials. Its rot-proof construction and resistance to bacteria, fungi and small organisms further support long-term performance in damp, concealed spaces.\u003c\/p\u003e\n\u003cp\u003eThe thermally welded mesh face improves finishing practicality. A standard smooth cavity drain membrane normally requires an independent lining system or battens to receive plasterboard, whereas Newton CDM 508 Mesh provides a surface key for suitable plaster or render systems. This can simplify the wall build-up in appropriate applications and reduce overall lining depth, which is often important in basement conversions and refurbishment works where internal space is limited.\u003c\/p\u003e\n\u003cp\u003eThe product is also beneficial because it avoids reliance on aggressive substrate preparation. The membrane is mechanically fixed and forms part of a drained system, so the existing wall does not usually need the same level of preparation required for direct-applied tanking coatings. This can reduce disruption and help installation progress more quickly, provided the substrate is suitable for fixing and the system is correctly detailed.\u003c\/p\u003e\n\u003cp\u003eWhen installed as part of the full Newton CDM System, including drainage channels, appropriate outlets, pumps where required, compatible fixings, sealing tapes and ventilation considerations, Newton CDM 508 Mesh can contribute to a Grade 3 internal environment under BS 8102:2022. This makes it suitable for high-quality basement waterproofing and cellar conversion work where the aim is to create dry internal conditions suitable for normal occupation, decoration and long-term use.\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm-508-mesh-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-cdm-508-mesh-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm-508-mesh-table col:nth-child(1) { width: 34%; }\n  .pc-newton-cdm-508-mesh-table col:nth-child(2) { width: 37%; }\n  .pc-newton-cdm-508-mesh-table col:nth-child(3) { width: 12%; }\n  .pc-newton-cdm-508-mesh-table col:nth-child(4) { width: 17%; }\n\n  .pc-newton-cdm-508-mesh-table th,\n  .pc-newton-cdm-508-mesh-table td {\n    border: 5px solid #fff;\n    padding: 7px 10px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-section-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 16px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-section-head th:nth-child(2) {\n    text-align: center;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-data-row td:nth-child(2) {\n    text-align: center;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm-508-mesh-table .pc-feature-cell {\n    font-weight: 400;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-cdm-508-mesh-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-newton-cdm-508-mesh-table th,\n    .pc-newton-cdm-508-mesh-table td {\n      padding: 7px 8px;\n      border-width: 4px;\n    }\n\n    .pc-newton-cdm-508-mesh-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-cdm-508-mesh-table .pc-section-head th {\n      font-size: 15px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm-508-mesh-table-wrap\"\u003e\n\u003ctable aria-label=\"Newton CDM 508 Mesh Membrane Technical Data\" class=\"pc-newton-cdm-508-mesh-table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-head\"\u003e\n\u003cth\u003eFeatures\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e505\u003c\/td\u003e\n\u003ctd\u003eg\/m²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e2.0\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eLength\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eArea\u003c\/td\u003e\n\u003ctd\u003e40\u003c\/td\u003e\n\u003ctd\u003em²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eMembrane Thickness\u003c\/td\u003e\n\u003ctd\u003e0.6\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003eEN 149-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eStud Height\u003c\/td\u003e\n\u003ctd\u003e7.0\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-50 to +80\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd\u003e126\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003ePackaged Weight\u003c\/td\u003e\n\u003ctd\u003e20.2\u003c\/td\u003e\n\u003ctd\u003ekg\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-head\"\u003e\n\u003cth\u003eInstalled Performance\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWater Tightness at 60 kPa; 24h\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eTensile Strength MD\u003c\/td\u003e\n\u003ctd\u003e416\u003c\/td\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eTensile Strength CD\u003c\/td\u003e\n\u003ctd\u003e488\u003c\/td\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eResistance to Static Loading\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 20\u003c\/td\u003e\n\u003ctd\u003eKg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eCompressive Strength \u003csup\u003e1\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003ctd\u003e180\u003c\/td\u003e\n\u003ctd\u003ekN\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eFire Resistance\u003c\/td\u003e\n\u003ctd\u003eF*\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eType of Application\u003c\/td\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eLifetime of structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm-508-mesh-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table col:nth-child(1) { width: 26%; }\n  .pc-newton-cdm-508-mesh-ancillary-table col:nth-child(2) { width: 74%; }\n\n  .pc-newton-cdm-508-mesh-ancillary-table th,\n  .pc-newton-cdm-508-mesh-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 13px 10px;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-section-title th {\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 12px;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-column-head th {\n    background: #a6a6a6;\n    color: #111;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm-508-mesh-ancillary-table .pc-product-cell {\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-cdm-508-mesh-ancillary-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-newton-cdm-508-mesh-ancillary-table th,\n    .pc-newton-cdm-508-mesh-ancillary-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-newton-cdm-508-mesh-ancillary-table .pc-main-title th {\n      font-size: 23px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-cdm-508-mesh-ancillary-table .pc-section-title th {\n      font-size: 18px;\n      padding: 10px 9px;\n    }\n\n    .pc-newton-cdm-508-mesh-ancillary-table .pc-column-head th {\n      font-size: 18px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm-508-mesh-ancillary-table-wrap\"\u003e\n\u003ctable class=\"pc-newton-cdm-508-mesh-ancillary-table\" aria-label=\"Newton CDM 508 Mesh Membrane Ancillary Products\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"2\"\u003eNewton CDM 508 Mesh Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplugs-cavity-drain-membrane-fixing-plugs-a1\" target=\"_blank\"\u003eNewton CDM MultiPlugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist membrane fixing plugs used to mechanically secure Newton CDM 508 Mesh Membrane to suitable wall substrates. They help hold the membrane firmly in place so the meshed face can receive plaster, render or bonded plasterboard.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-nuseal-plugs-vaulted-ceiling-membrane-fixing-a2\" target=\"_blank\"\u003eNewton CDM NuSeal Plugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist sealed fixing plugs used for vaulted, sloping or overhead applications where a standard sealing washer is not suitable. These are used with Newton CDM Rope to create a reliable sealed fixing detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplug-pins-cavity-drain-membrane-fixing\" target=\"_blank\"\u003eNewton CDM MultiPlug Expansion Pin\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eExpansion pin used within the CDM fixing plug to help secure the fixing into the substrate. It is part of the fixing detail that helps hold the membrane firmly against the wall or vaulted soffit.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eJointing, Sealing And Mesh Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-joint-tape-double-sided-butyl-membrane-tape\" target=\"_blank\"\u003eNewton CDM Joint Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-sided butyl jointing tape used to seal flanged joints, sheet overlaps and suitable stud-into-stud joints. It helps maintain waterproofing continuity where Newton CDM 508 Mesh sheets are joined together.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-rope-butyl-membrane-sealing-rope\" target=\"_blank\"\u003eNewton CDM Rope\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlexible butyl sealing rope used where a flange joint is not possible, where a stud-over-stud joint is required, and where fixing plugs need to be sealed in vaulted or overhead applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-overtape-butyl-membrane-sealing-corner-tape\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eWider sealing tape used for repairs, reveal details, abutting joints, perimeter details and service penetration detailing. It is particularly useful where a broader surface seal is required over the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-mesh-tape-plaster-membrane-jointing-tape-a25\" target=\"_blank\"\u003eNewton Mesh Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eMesh-faced tape used over sealed joints, repairs and detailing areas where plaster or render will be applied directly. It reinstates the surface key where tapes or sealing products would otherwise leave a plain, non-meshed area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" target=\"_blank\"\u003eNewton CDM BaseDrain\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePerimeter drainage channel normally positioned at the wall-to-floor junction to collect water from behind the wall membrane and from the vulnerable wall\/floor junction. It directs water towards a suitable sump, gully, waste pipe or drainage outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDetail strip used where deeper floor finishes require a maintained condensation gap. It helps allow condensation from the membrane face to enter the drainage channel rather than pooling at the floor edge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Inspection Ports\u003c\/td\u003e\n\u003ctd\u003eAccess points incorporated into the drainage system to allow future inspection, cleaning and maintenance of the drainage channel. They help keep the drainage route serviceable after the membrane and finishes have been installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton CDM BaseBoard\u003c\/td\u003e\n\u003ctd\u003eAlternative drainage method that may be considered where existing floor levels do not provide enough headroom for Newton CDM BaseDrain within a Newton CDM Fibran XPS 500-C spacer build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" target=\"_blank\"\u003eSump Chambers\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eChambers used to collect water from the cavity drain system before it is pumped or discharged to a suitable outlet. They form part of the wider drainage and water management arrangement where natural drainage is not suitable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" target=\"_blank\"\u003ePumping Equipment\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePumping equipment used where water collected by the drainage system needs to be removed mechanically. The pump arrangement must be sized to suit the expected water ingress, pumping head, discharge distance and drainage layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eGullies And Waste Pipes\u003c\/td\u003e\n\u003ctd\u003eDrainage connection points that can be used with Newton CDM BaseDrain where suitable. They help direct collected water away from the cavity drain system as part of the designed drainage arrangement.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eDischarge Pipes\u003c\/td\u003e\n\u003ctd\u003ePipework used to carry water away from the sump and pump arrangement to the chosen discharge point. Correct discharge design is important where the waterproofed area relies on pumping to remain dry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" target=\"_blank\"\u003eHigh Water Level Alarms\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAlarm systems used to warn of high water levels within a sump chamber. They provide additional protection by alerting the user before water levels rise high enough to affect the waterproofed area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eBattery Back-Up Systems\u003c\/td\u003e\n\u003ctd\u003eBack-up power systems used where the waterproofed area relies on pumps and needs additional protection during a power failure. They should be sized to suit the expected water volume and risk profile of the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eMonitoring And Telemetry Systems\u003c\/td\u003e\n\u003ctd\u003eMonitoring systems used where additional pump and drainage oversight is required. They can provide early warning of pump issues, high water levels or maintenance requirements within higher-risk waterproofing designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton 106 Lime Inhibitor or \u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" target=\"_blank\"\u003eWykamol Anti Lime Sealer\u003c\/a\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAnti-lime treatment used on new concrete to help reduce the risk of free lime being drawn out by water movement. This helps protect drainage paths, membrane voids and channels from lime scale build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClosed-cell extruded polystyrene insulation used within suitable Newton CDM floor and drainage build-ups. It is referenced where BaseDrain may be used within a spacer build-up requiring controlled floor levels.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/floor-damp-proofing-membrane-newton-slimline\" target=\"_blank\"\u003eNewton DampSafe 601 Membrane\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDampSafe membrane used where a suitable membrane needs to be taken through reveal details as an alternative to continuing the studded membrane. It can be taped to the wall membrane using Newton CDM Joint Tape and Newton CDM OverTape.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Collar\u003c\/td\u003e\n\u003ctd\u003ePreformed pipe sealing accessory used where service penetrations through the membrane cannot be avoided. It helps create a controlled seal around pipes and other protrusions through the waterproofing layer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Sleeve\u003c\/td\u003e\n\u003ctd\u003ePipe sealing accessory used where services must pass through the membrane, particularly where services are grouped or routed through a pipe. It helps maintain waterproofing continuity around penetration details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eDirect Finish And Surface Protection Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eTarmac Whitewall One Coat\u003c\/td\u003e\n\u003ctd\u003eRecommended plaster used with Newton CDM 508 Mesh where a direct plaster finish is required. It is applied in coats so the plaster keys properly into the thermally welded mesh surface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-renovation-plaster\" target=\"_blank\"\u003eWykamol Renovation Plaster\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eBacking plaster option used where a high impact resistant finish is required. It can form part of the plaster build-up, subject to the correct specification and suitability for the environment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-finish-plaster\" target=\"_blank\"\u003eWykamol High Impact Finishing Plaster\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFinishing plaster used with Wykamol Renovation Plaster where a higher impact resistant finish is required. It is not suitable for areas of high humidity or wet areas such as swimming pool surrounds.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eSand, Cement And Lime Render\u003c\/td\u003e\n\u003ctd\u003eInternal render finish applied directly to the meshed face where a rendered surface is specified. The scratch coat is worked firmly into the mesh to stiffen the membrane and provide a backing for subsequent coats.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNHL 3.5 Hydraulic Lime\u003c\/td\u003e\n\u003ctd\u003eHydraulic lime finish option used where a lime-based finish is specified. It is applied in a scratch coat and float coat, with the scratch coat pushed firmly into the mesh to form the key.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003ePlasterboard Panels\u003c\/td\u003e\n\u003ctd\u003ePlasterboard panels may be fixed to Newton CDM 508 Mesh using the dot and dab method. This creates a dry internal surface ready for decoration, subject to correct fixing and board selection.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eExpanded Metal Angle Beads And Stop Beads\u003c\/td\u003e\n\u003ctd\u003eFinishing beads used where required within render or plaster details. They help form clean edges, corners and stops within the direct finish applied over the meshed membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/soudal-fix-all-flexi-hybrid-adhesive-sealant\" target=\"_blank\"\u003eFlexible Polymer-Based Sealant\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlexible sealant used within expansion joints formed through the render to the membrane. It helps accommodate movement where render joints are required within the finished surface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh should be installed by competent operatives with experience in structural waterproofing, Type C drained protection systems and below-ground membrane installations. It forms part of the Newton CDM System, which relies on correct design, drainage, fixing, sealing, finishing and maintenance rather than the membrane acting as a standalone water barrier. The product information states that Newton CDM 508 Mesh should be installed by those with structural waterproofing experience, with trained specialist contractors recommended for correct system design and installation.\u003c\/p\u003e\n\u003cp\u003eBefore installation begins, the working area should be assessed for safety, access, lighting, ventilation and the condition of the existing structure. Suitable PPE should be worn, including gloves and safety glasses, particularly when drilling through the membrane, cutting the sheets, using fixing plugs, applying tapes or using a heat gun. Where the membrane is being installed to high walls, vaulted soffits or overhead details, safe access equipment such as staging or scaffold should be used. A 110V SDS hammer drill, sharp cutting tools and hot air gun should be handled carefully, with all drilling and fixing carried out in a controlled manner to avoid damaging the membrane, substrate or hidden services.\u003c\/p\u003e\n\u003cp\u003eThe product should only be used for the intended applications and within the correct Newton CDM waterproofing system build-up. Newton CDM 508 Mesh is designed for walls, vaults and tunnels, and for suitable vaulted or sloping soffit applications where the membrane can drain correctly. It should not be used as an isolated waterproof sheet, and it should not be installed where the waterproofing design does not include adequate collection and removal of water from behind the membrane system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is used as part of a Type C cavity drain waterproofing system. The system does not work by resisting hydrostatic pressure at the face of the structure. Instead, the studded membrane creates a depressurisation space behind the internal finish, allowing water ingress to be controlled, managed and directed towards drainage channels, sump chambers or safe natural drainage. For this reason, drainage is not an optional extra. It is central to the performance of the system.\u003c\/p\u003e\n\u003cp\u003eThe waterproofing design should take account of BS 8102:2022, the structure type, the intended internal environment, the expected water pressure, the condition of the wall or soffit, and the proposed finish. The external structure should be capable of controlling the rate of water ingress so that it does not exceed the ability of the cavity drain system to collect and remove water. Where water is entering heavily through construction joints, movement joints, cracks or wall\/floor junctions, the flow should be reduced or controlled before the cavity drain membrane system is installed.\u003c\/p\u003e\n\u003cp\u003eFor existing structures, the designer should consider that the original construction may not have been designed to resist modern expectations of water pressure. Older brick structures often leak most freely at the wall\/floor junction, while more modern concrete structures may leak through kicker joints, movement joints, construction joints or cracking. For new-build structures, the concrete structure, construction joints and crack control measures should be designed properly so that the cavity drain system is dealing with controlled leakage rather than unmanaged water ingress.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 Mesh is not suitable for gas protection systems. Where radon, methane or hydrocarbon gas protection is required, an appropriate gas-rated system should be specified instead. The meshed membrane is intended for waterproofing and damp management applications where the wall or vaulted soffit will receive plaster, render, hydraulic lime or plasterboard bonded by dabs directly to the meshed face.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates And Areas Of Use\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is suitable for walls formed from concrete, brick and concrete block. It may also be fixed to ICF construction where special longer fixing plugs are used. The substrate must be capable of receiving a secure mechanical fixing, and weak, friable, loose or heavily deteriorated areas should be repaired or made good before the membrane is installed.\u003c\/p\u003e\n\u003cp\u003eFor soffit applications, Newton CDM 508 Mesh is suitable for brick arched or vaulted soffits and concrete soffits where a fall is present. The membrane must be able to drain without sagging or creating pockets where water can pond behind the system. Flat soffits are not suitable for Newton CDM 508 Mesh, so they should not be treated as a routine application for this product.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 Mesh is not a floor membrane. It is intended for walls, vaults and tunnels, with the mesh face providing a key for plaster, render, hydraulic lime or dot-and-dab plasterboard. Where the project requires a floor membrane, a suitable Newton floor membrane should be specified as part of the wider CDM System rather than using Newton CDM 508 Mesh for that purpose.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls And Vaulted Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAll areas should be assessed before the membrane is installed. Timber, organic material and materials that may support fungal or bacterial growth should be removed from behind the system, including skirting boards, timber plates, old wallpaper and similar finishes. If rot is present, it should be treated by a suitable specialist before the membrane is installed. If mould is present, it should be cleaned away and the area sterilised with a fungicidal wash.\u003c\/p\u003e\n\u003cp\u003eThe substrate does not need the same extensive and potentially damaging preparation often required for directly bonded tanking systems, but it must still be suitable for secure fixing. Loose material, unstable backgrounds, heavy contamination and large depressions should be addressed before work begins. Uneven or deteriorated walls should be levelled or made good where necessary so that fixing plugs can hold firmly and the membrane can sit neatly against the wall without excessive distortion.\u003c\/p\u003e\n\u003cp\u003eWhere new concrete is present, a suitable lime inhibitor should be considered to reduce the risk of free lime being drawn from the concrete by ingressing water. This is important because lime scale can affect drainage performance within cavity drain systems. For wall and soffit applications, the surface should be free from loose material, sharp projections and debris that could puncture or distort the membrane. All membrane areas to receive tapes, ropes or sealed joints must be clean, dry and dust free before sealing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe minimum tools required include a good quality 110V SDS hammer drill, suitable 10mm or 11mm SDS drill bits depending on the fixing plugs being used, a mallet or club hammer, a sharp Stanley knife with spare blades, tape measure, long spirit level, clean rags, suitable access equipment for work at height, gloves and safety glasses. Extra lighting, a 110V hot air gun and a rotating laser level are also recommended, with the laser level particularly useful for keeping long sheets straight and avoiding kinks or misalignment.\u003c\/p\u003e\n\u003cp\u003eThe main ancillary products used with Newton CDM 508 Mesh include Newton CDM MultiPlugs, Newton CDM NuSeal Plugs, Newton CDM Joint Tape, Newton CDM Rope, Newton CDM OverTape, Newton Mesh Tape, Newton CDM BaseDrain, Newton CDM Condensation Strip, inspection ports, sump chambers and pumping equipment where required. CDM Joint Tape is used to seal flanged joints and suitable stud-into-stud laps. CDM Rope is used where a flange joint is not possible, where a stud-over-stud joint is required, and where fixing plugs need to be sealed on vaulted or overhead applications. CDM OverTape is used for repairs, reveal details and certain abutting or perimeter details. Newton Mesh Tape is used over sealed joints on Newton CDM 508 Mesh where the plaster or render key needs to be reinstated.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh must be used as part of a cavity drain waterproofing system that removes water safely from behind the membrane. Water should be directed to a drainage channel, sump chamber or safe natural drainage route. Standing water behind the system should be avoided because it can lead to silt or lime scale build-up and can compromise the ability of water to flow to the drainage point.\u003c\/p\u003e\n\u003cp\u003eCDM BaseDrain is normally positioned at the wall\/floor junction to collect water from behind the wall membrane and receive water at the vulnerable junction between wall and floor. It can connect to sump chambers, gullies, waste pipes or other designed drainage points, and inspection ports can be incorporated to allow future maintenance. Where deeper floor finishes are used, CDM Condensation Strip may be required to maintain a condensation gap so any condensation forming on the membrane face can be collected by the drainage channel rather than pooling at the floor edge.\u003c\/p\u003e\n\u003cp\u003eWhere a pumped system is required, the sump and pump arrangement must be sized to suit the expected water ingress, pumping head, discharge distance and drainage layout. A common design guide is one sump for every 50m of CDM BaseDrain, although this depends on the water-tightness of the structure, soil conditions, slab levels and the likelihood of greater than normal water ingress. Battery back-up, alarms, monitoring and dedicated discharge arrangements should be considered where the space relies on pumping to remain dry.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is generally fixed vertically because the rolls are heavier and supplied in 2.0m wide rolls rather than 2.4m high rolls. The membrane can be fixed using the same basic method as other wall membranes within the CDM System, but the fixing density is different because the mesh face is intended to receive plaster, render or bonded plasterboard.\u003c\/p\u003e\n\u003cp\u003eThe membrane should be placed against the wall as level as possible, with the mesh face facing inwards towards the room and the studded side facing the substrate. A hole is drilled through the centre of a stud near the top edge of the membrane using the correct drill bit for the selected fixing plug. The hole should be drilled to a depth greater than the fixing. The plug is then hammered into the pre-drilled hole until it sits flush within the stud and seals the fixing point. The membrane should then be levelled using a long spirit level or laser level, and a second fixing installed approximately 2m along the top of the sheet so the membrane hangs level.\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508-mesh-membrane-8mm-studded-waterproof-meshed-w-2-0m-x-l-20m-40m-basement-membranes-959_1024x1024.webp?v=1782905731\" alt=\"Newton CDM 508 MESH Membrane - 8mm Studded Waterproof MESHED Membrane - (W) 2.0M x (L) 20M (40M²) - Basement Waterproof\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eEach following sheet should be positioned to overlap the previous sheet by at least the width of the flange. Interlocking the first stud of the new sheet with the last stud of the previous sheet can help keep the sheet level and aligned. The joint should be sealed with CDM Joint Tape, normally applied to the inner face of the flange of the next sheet. Before sealing, the flange and the face of the previous sheet should be wiped clean with a clean rag. Once the sheet is correctly positioned, the backing paper is removed progressively while pressure is applied along the flange. Further pressure should then be applied with the palm of the hand along the whole joint to complete the seal. A hot air gun may be used to dry the membrane and assist adhesion, especially in cold or damp conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508-mesh-membrane-8mm-studded-waterproof-meshed-w-2-0m-x-l-20m-40m-basement-membranes-627_1024x1024.webp?v=1782905726\" alt=\"Newton CDM 508 MESH Membrane - 8mm Studded Waterproof MESHED Membrane - (W) 2.0M x (L) 20M (40M²) - Basement Waterproof\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFixing Centres For Newton CDM 508 Mesh\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh requires closer fixing centres than non-meshed membranes because the membrane is carrying a plaster, render or bonded board finish. Fixings should be installed in a square pattern at 350mm centres, with an additional fixing placed in the centre of each group of four fixings so the pattern resembles the number 5 on a dice. This results in all fixings being at a maximum of 250mm centres. On very flat walls, the horizontal and vertical centres may be increased to 400mm, provided the centre fixing is still installed so the final centres are not more than 300mm.\u003c\/p\u003e\n\u003cp\u003eFixings should be kept neat and aligned wherever possible. This is important for both the visual quality of the membrane installation and the performance of the subsequent finish. Poor fixing alignment, insufficient fixing density or fixings placed into weak substrate can allow the membrane to move, which may affect plaster, render or board adhesion. Any plug that does not hold securely should be repaired and replaced in a new stud position rather than left as a weak fixing.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_508_Mesh_2_1024x1024.jpg?v=1782905646\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing, Sealing And Mesh Tape Detailing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAll sealing surfaces must be clean, dry and dust free before CDM Joint Tape, CDM Rope, CDM OverTape or Newton Mesh Tape is applied. The sealing material must be pressed firmly against the membrane to ensure proper adhesion. For 8mm membranes such as Newton CDM 508 Mesh, the preferred joint is normally the flanged joint where the flat flange is available. The flange should cover a minimum of two rows of studs, with CDM Joint Tape positioned beneath the flange on the flat section between the last two rows of studs. The backing paper should remain in place until the upper membrane is correctly positioned, then be removed while the two membrane layers are pressed firmly together.\u003c\/p\u003e\n\u003cp\u003eA locked flanged joint may be used where the first row of studs on the next sheet interlocks with the last row of studs on the previous sheet. This helps ensure the next sheet is installed square and is useful on large areas or where alignment is particularly important. Where a flange is not available but the studs line up correctly, a stud-into-stud joint may be formed with a minimum three-stud overlap using CDM Joint Tape. Where neither a flanged joint nor a stud-into-stud joint is possible because the studs do not interlock, a stud-over-stud joint should be made with a minimum three-row overlap and CDM Rope positioned between the last two rows of studs on the reverse side of the upper membrane.\u003c\/p\u003e\n\u003cp\u003eWhere joints in Newton CDM 508 Mesh have been sealed with CDM Joint Tape, CDM Rope or CDM OverTape, Newton Mesh Tape should be applied over the sealed joint wherever plaster or render will be applied directly. This reinstates the surface key over the sealed area, allowing the plaster or render to grip across the joint rather than being applied over a plain butyl or PVC-backed tape.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003cimg style=\"margin: 10px 10px 10px 10px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Membrane_Sealing_1_559cd937-2c66-44b2-bd1e-d4ef1dac5f05_480x480.jpg?v=1782907688\"\u003e     \u003cimg style=\"margin: 10px 10px 10px 10px; float: none;\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Membrane_Sealing_2_480x480.jpg?v=1782907503\"\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInternal Plaster Finish\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is suitable for internal plaster finishes because the mesh is thermally welded to the face of the membrane and provides a mechanical key. The recommended plaster is Tarmac Whitewall One Coat, but it should not be applied as one single coat to Newton meshed membranes. The plaster should be applied in two coats, with a 6mm scratch coat followed by a 6mm second or float coat. Where a finish coat is required, this should be 3mm.\u003c\/p\u003e\n\u003cp\u003eA minimum drying period of 24 hours should be allowed between coats of plaster. Plastering should follow good plastering practice and the relevant standards referenced for this type of work. Decoration should not be applied until the plaster is thoroughly dry. If a high impact resistant finish is required, Wykamol Renovation Plaster and Wukamol High Impact Finishing Plaster may be used, but they are not suitable for areas of high humidity or wet areas such as swimming pool surrounds.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInternal Render Finish\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh can also receive an internal render finish. A sand, cement and lime render should be applied in two coats to a total thickness of 14mm, with a 3mm skim coat of finishing plaster added once the render is fully cured if required. The scratch coat should be 7mm thick and mixed at 1 part lime, 1 part cement and 5 parts clean, well-graded sharp sand. The second or float coat should also be 7mm thick and mixed at 1 part lime, 1 part cement and 6 parts clean, well-graded sharp sand.\u003c\/p\u003e\n\u003cp\u003eThe scratch coat must be worked firmly into the mesh. Its purpose is to stiffen the membrane and provide a rough, absorbent backing for subsequent coats. The scratch coat and float coat should each be allowed to dry for not less than 7 days, preferably 10 days or longer where possible. Shorter curing periods increase the risk of cracking. The render must be dampened as required during curing, and in warm weather it should be protected from excessive drying by covering with damp hessian sheets and plastic sheeting. Before applying the second coat, a small section should be carefully drilled or scratched out behind the mesh within the membrane stud to confirm that the scratch coat is fully cured, as the surface may appear cured before the deeper material behind the mesh has properly hardened.\u003c\/p\u003e\n\u003cp\u003eA smooth render finish is not recommended. Expansion joints should be trowelled through the render to the membrane and filled with a suitable flexible polymer-based sealant. Expanded metal angle beads and stop beads may be fixed where appropriate using dabs of the same material mixed for the scratch coat. Decoration should not be applied until render is thoroughly dry.\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508-mesh-membrane-8mm-studded-waterproof-meshed-w-2-0m-x-l-20m-40m-basement-membranes-233_1024x1024.webp?v=1782905735\" alt=\"Newton CDM 508 MESH Membrane - 8mm Studded Waterproof MESHED Membrane - (W) 2.0M x (L) 20M (40M²) - Basement Waterproof\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHydraulic Lime Finish\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWhere a hydraulic lime finish is specified, NHL 3.5 should be used to a combined depth of 20mm, formed from a 10mm scratch coat and a 10mm second or float coat. The mix ratio is 2.5 parts sand to 1 part NHL 3.5, mixed in line with the manufacturer’s instructions. The 10mm scratch coat must be pushed firmly into the membrane mesh, then checked the following day so any cracks can be rubbed out. The surface should be thoroughly scratched without breaking the surface of the mesh.\u003c\/p\u003e\n\u003cp\u003eThe scratch coat should be left for a minimum of 7 days to set and should be protected from draughts and extremes of temperature. Before applying the second coat, a small area behind the mesh within the stud should be checked to confirm that it is set and reasonably hard. The scratch coat should be dampened before the float coat is applied. The second coat is then ruled off to flatten the wall surface and protected in the same way as the scratch coat. It may be floated or trowelled as the finished coat, or a further finish coat may be applied if required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePlasterboard On Dabs\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlasterboard panels can be fixed to Newton CDM 508 Mesh using the dot and dab method, creating a dry surface ready for immediate decoration. Dabs should be applied to the heads of the fixing plugs, along board edges and to the membrane itself, covering 50% of the CDM 508 Mesh surface.\u003c\/p\u003e\n\u003cp\u003eCare should be taken with laminated or insulated plasterboard. When laminated boards are dot-and-dabbed to meshed membranes, building regulations may require two mechanical fixings per board. These fixings can breach the membrane and may not be repairable without affecting the system. Where insulation is required in the wall build-up, it may be more suitable to use a non-meshed membrane with an independent dry-lining frame rather than relying on dot-and-dab laminated boards fixed through the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh can be used on vaulted soffits and arched structures. The membrane must be fixed and lapped so that water cannot pond behind the system. Laps and joints must be detailed to allow drainage, and the membrane must be held tight to the soffit without sagging. For vaulted ceilings and soffits, the rubber sealing washer supplied with standard CDM MultiPlugs or CDM Plugs should not be used. Instead, a ring of CDM Rope should be used with the selected CDM fixing plug to form the seal.\u003c\/p\u003e\n\u003cp\u003eFor vaulted cellar applications, measure the depth of the vault from the front wall to the back wall and allow a 200mm downturn at each end. The membrane should then be unrolled and cut to size. The approximate centre of the arched ceiling should be marked, then another mark made 1.2m down the arch. A horizontal line should be struck from the back wall to the front wall to act as a guide for the sheet edge. Masonry nails may be used along the guide line to create a physical edge and help keep sheet sections symmetrical.\u003c\/p\u003e\n\u003cp\u003eThe first section of membrane should be offered up to the ceiling, allowing a 200mm lap to the back wall. Using the guide line to keep the sheet square, the sheet should be drilled and fixed along the apex of the arch, following the same line of studs. CDM MultiPlugs or CDM NuSeal Plugs may be used, with CDM Rope forming the seal. The fixings should be installed through the centre of the membrane studs at approximately 600mm centres. They must be kept in line because they will provide the fixing points for battens where battens are used.\u003c\/p\u003e\n\u003cp\u003eThe next section of membrane should be cut to size, again allowing a 200mm lap at each end. Before it is offered into position, CDM Joint Tape should be applied to the edges of the first sheet, either on the flanged edge or between the last two rows of studs on the non-flanged edge. The protective paper should remain on the tape until the second sheet is correctly positioned. Once the sheet is aligned and overlapping the sealing tape, the protective paper should be removed from the centre outwards and the joint pressed firmly to form the seal. This process continues until the arched surfaces are covered to the springer and down the vertical wall sections below, maintaining the 200mm lap to the end walls.\u003c\/p\u003e\n\u003cp\u003eAt end walls of vaulted construction, a flat membrane end piece is fitted to the end wall of the vault. The 200mm lap from the soffit membrane is cut into fans so it follows the curve and sits neatly against the wall. Each cut should be filled with a small piece of CDM Rope or CDM Joint Tape. Cuts should not be taken all the way up to the ceiling, and as few cuts as possible should be made. The end wall membrane is then fixed in front of the fanned ceiling membrane and trimmed neatly into the ceiling curve. CDM Rope is used to form the joint around the arch, following the contour of the ceiling curve.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_508_Mesh_3_1024x1024.jpg?v=1782905646\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit And Floor Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is not suitable for flat soffits. Where soffit waterproofing is required, the product should be limited to appropriate vaulted, arched or sloping soffit applications where drainage can be maintained and ponding can be avoided. The membrane should not sag, and any soffit installation must allow water to move to the designed drainage route.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 Mesh should not be used as a floor membrane. Its intended use is on walls, vaults and tunnels, with the mesh face used to receive plaster, render, hydraulic lime or dot-and-dab plasterboard. If the project includes floor waterproofing, an appropriate Newton floor membrane should be selected and installed as part of the wider system design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDoor reveals and openings must be detailed so the waterproofing layer remains continuous around the opening. Where membrane is fitted to an end wall with a door opening, allow for a separate section around the door head, lapping down the sides by approximately 100mm. The wall membrane can then be wrapped around the sides, maintaining the drainage detail and forming an overlap. The small gap that can occur on the angle of the door opening should be sealed with CDM OverTape. Alternatively, a suitable DampSafe membrane may be taken through the reveal and taped to the wall membrane using CDM Joint Tape and CDM OverTape.\u003c\/p\u003e\n\u003cp\u003eCorners should be planned so the membrane can be lapped and sealed without creating a route for water to sit on a joint or become trapped. Where the flanged edge is available, the flange should be used and sealed with CDM Joint Tape. Where the flange is not available, stud-into-stud or stud-over-stud details should be used depending on whether the studs interlock. On meshed installations, any joint that loses its plaster or render key because it has been sealed with a plain tape or rope should be over-taped with Newton Mesh Tape before the direct finish is applied.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Newton CDM 508 Mesh\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eService penetrations, pipes, cables, conduits and other protrusions should be avoided where possible because they interrupt the waterproofing layer. Where a protrusion is unavoidable, the membrane should be cut neatly around the service and sealed carefully using CDM Rope, CDM OverTape or a suitable pipe collar or sleeve detail. The technical drawing in the installation file shows protrusions through wall or floor membranes sealed with a bead of CDM Rope and CDM OverTape, with priming sometimes required where adhesion to the protrusion needs improving.\u003c\/p\u003e\n\u003cp\u003eOverhead intrusions through vaulted areas should be avoided wherever practical. Services such as pipes and electrical wiring should ideally be moved to a vertical surface where they can be better sealed and positioned on the dry side of the system. Where services must pass through the membrane, they should be grouped where possible and passed through a pipe sealed with an appropriate pipe sleeve option.\u003c\/p\u003e\n\u003cp\u003eOnce the protrusion has been sealed, the finishing surface must also be considered. Where CDM OverTape, CDM Rope or another non-meshed sealing detail is used over Newton CDM 508 Mesh, Newton Mesh Tape should be applied above the sealed area where a direct plaster or render finish needs to continue across the detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Newton CDM 508 Mesh After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh should always be protected by suitable surface finishes. Suitable protection methods include plaster, render, a floor-supported dry-lining frame with plasterboard, or timber battens fixed into Newton CDM MultiPlugs as a support for plasterboard or wooden sheeting. The membrane should not be left exposed to long-term UV light, physical damage, wear, impact or abrasion.\u003c\/p\u003e\n\u003cp\u003eThe membrane’s long service life depends on correct specification, installation and protection. It should be fully isolated from UV light, physical damage and wear once installed. Care should be taken during follow-on trades, as damage caused by drilling, cutting, over-fixing, mechanical abrasion or careless handling can compromise the membrane and must be repaired before finishes are applied.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFire Protection\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is fire rated to Euroclass F under BS EN 13501-1. It should be treated in the same way as plastic-based insulation and protected from fire by suitable surface finishes. The membrane should not be left exposed where the fire strategy requires it to be covered. Fire-resistant membrane options tested and classified to B-s2,d0 are available from Newton for projects where the specification requires a higher fire performance.\u003c\/p\u003e\n\u003cp\u003eThe fire protection requirement should be considered before internal finishes are selected. Plaster, render, plasterboard or other approved finishes should be installed in a way that protects the membrane while maintaining the waterproofing design. Any openings, penetrations, service zones or boxed-in areas should be detailed so the membrane remains protected and the waterproofing layer is not punctured unnecessarily.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVentilation is an important part of any habitable below-ground space. Basements and earth-retained rooms are often more difficult to ventilate naturally, particularly where most of the external walls are below ground. Mechanical ventilation is commonly required to control humidity, reduce condensation risk and support the internal environment. BS 8102:2022 recognises that ventilation, dehumidification or air conditioning may be necessary for Grade 3 spaces, depending on the intended use.\u003c\/p\u003e\n\u003cp\u003eCondensation risk increases where insulation prevents heat from reaching the waterproofing membrane face, causing surfaces to become cooler and more likely to reach dew point. Relative humidity should therefore be controlled through suitable ventilation. Where CDM BaseDrain is used, spacers to the reverse side of the upstand can collect condensation from the face of the wall membrane and allow it to enter the drainage channel. Where floor finishes are deeper, CDM Condensation Strip may be required to maintain a condensation gap.\u003c\/p\u003e\n\u003cp\u003eIf the condensation gap is sealed for a specific reason, such as a gas barrier design in another compatible system, the ventilation system must work as designed. For Newton CDM 508 Mesh applications, condensation control should be considered as part of the whole room design, particularly where the space will be plastered, rendered, decorated and used as a habitable room.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore plaster, render, hydraulic lime, bonded plasterboard or dry-lining is applied, the installed Newton CDM 508 Mesh should be inspected carefully. Any repairs required during installation should be completed as the work progresses, rather than left until the end. This reduces the risk of damaged studs, punctures, poor joints or failed fixings being hidden behind the final finish.\u003c\/p\u003e\n\u003cp\u003eAll joints should be checked for correct overlap, full adhesion and complete sealing. Fixings should be checked for secure hold and correct seating within the studs. Sealed details around door reveals, corners, protrusions, vault ends and service entries should be inspected before they are covered. Any area where the mesh key has been lost due to plain sealing tape, rope or repair tape should be treated with Newton Mesh Tape before direct plaster or render is applied.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Newton CDM 508 Mesh\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf the wrong stud is drilled by mistake, the stud should be cleaned with a clean cloth and plugged with CDM Rope. A small patch of CDM OverTape should then be applied over the repair. The same method can be used where a fixing has failed because the substrate is unsound or the fixing plug expansion pin has not achieved a secure hold. The failed position should be repaired, and a new stud should be selected and drilled for the replacement fixing.\u003c\/p\u003e\n\u003cp\u003eIf the membrane is accidentally cut or pierced on a vertical wall, the surface should be cleaned and the damage sealed with CDM OverTape. The tape should run along the full length of the cut, bridge both edges and extend at least 25mm beyond the furthest points of the damage. Ragged rips and tears should be treated in the same way. If a hole is created, CDM OverTape may be used where the hole can be bridged in one piece with at least a 25mm margin around the damaged area. Larger holes may require a membrane patch large enough to cover the damage with a margin beyond the hole. If the patch sits neatly into the studs, the edges can be sealed with CDM Joint Tape around the perimeter. If the studs do not interlock and a ridge is formed, CDM OverTape should be used to bridge around the patch perimeter onto the main membrane.\u003c\/p\u003e\n\u003cp\u003eWhere damage occurs to a vaulted ceiling, the same repair principles apply, but CDM OverTape should always be used to bridge or seal the damage. All repair surfaces must be clean and dry. A hot air gun may be used carefully to warm the membrane and CDM OverTape to remove surface moisture and assist adhesion. Where the repaired area will receive plaster or render, Newton Mesh Tape should be applied over the sealed repair to reinstate the surface key.\u003c\/p\u003e\n\u003cp\u003eGeneral repair work requires access to the system. If finishes have already been applied, they may need to be removed to reach the damaged membrane. Where multiple damages have occurred within one section, it may be more appropriate to cut out and replace a larger section rather than applying numerous small patches.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh itself requires very little maintenance once installed and protected, but the complete CDM System relies on drainage and pumping components remaining serviceable. Sump chambers, pumps, alarms, discharge pipes, inspection ports and drainage channels should be maintained by a competent person at least once per year, with any additional pump manufacturer requirements also followed. Maintenance should include cleaning and de-scaling where required, checking pump impellers, checking seals, inspecting discharge pipes, removing debris from the sump, checking electrical connections and flushing drainage channels.\u003c\/p\u003e\n\u003cp\u003eSump pumps rely on electricity, so a constant power supply is important. Where the waterproofed area depends on pumping, battery back-up should be considered and sized for the likely water volume during a power outage. High water level alarms, pump control, monitoring and telemetry can also be included where the risk profile of the project requires additional protection. \u003c\/p\u003e\n\u003cp\u003eFuture alterations must be controlled carefully. Newton CDM membranes should not be pierced. If shelves, cupboards, services, fittings or other works are proposed after installation, specialist advice should be obtained before any drilling or fixing is carried out. Even minor modifications can compromise the waterproofing system if they puncture the membrane or interfere with the drainage cavity.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is not suitable for flat soffits and should not be specified as a floor membrane. It is intended for walls, vaults and tunnels where a meshed cavity drain membrane is required for direct plaster, render, hydraulic lime or bonded plasterboard finishes.\u003c\/p\u003e\n\u003cp\u003eThe membrane has no capability to withstand water pressure as a standalone product. It must be used as part of a Type C cavity drain system that safely removes water from the building. If drainage is absent, blocked, undersized or unable to discharge, water can pressurise the system and compromise the waterproofing design.\u003c\/p\u003e\n\u003cp\u003eThe system is a professional-fit waterproofing system and should be designed and installed by trained and registered specialists. Substrate preparation, fixing density, joint sealing, drainage capacity, pump sizing, ventilation and finishing all affect performance. Poor detailing or uncontrolled follow-on works can compromise the finished installation.\u003c\/p\u003e\n\u003cp\u003eDecoration should not be applied until plaster or render is thoroughly dry. Cement-based renders and lime-based materials must be cured slowly and protected from accelerated drying. Rapid drying caused by sunlight, wind or dehumidification can produce weak render that is more prone to cracking.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 Mesh is manufactured from HDPE and has a white or translucent white appearance. It is supplied as code M3 in 2.0m x 20m rolls, covering 40m². The membrane has a density of 505g\/m², a membrane thickness of 0.6mm, a stud height of 7.0mm and a packaged weight of 20.2kg. The working temperature range is -50°C to +80°C and the softening temperature is 126°C.\u003c\/p\u003e\n\u003cp\u003eThe installed performance data states that Newton CDM 508 Mesh passes water tightness testing at 60kPa for 24hours to EN 1928. Tensile strength is listed as 416N in the machine direction and 488N in the cross direction to BS 12311-2. Resistance to static loading is greater than 20kg to BS 12730, compressive strength is 180kN to BS EN ISO 25619-2, and the application type is Type V. Fire resistance is listed as Euroclass F under BS EN 13501-1.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 Mesh is supported by BBA Agrément Certificate 22\/6357 and has a product warranty of 30 years, with a stated life expectancy of at least 100 years and a service life equal to the design life of the structure when specified, installed and protected correctly. The material is inert, non-polluting to drinking water, highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons. It is also rot-proof and resistant to bacteria, fungi and small organisms.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Newton CDM 508 Mesh Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh Membrane is an 8mm studded meshed cavity drain waterproofing membrane used within the Newton CDM System for below-ground waterproofing. It is designed for earth-retained walls, vaulted soffits, vaults and tunnels where water ingress needs to be managed internally. The rear studded profile creates a cavity behind the membrane, allowing water to move towards a suitable drainage channel, sump or pump system. The face of the membrane has a polyethylene mesh thermally welded to it during manufacture, providing a key for suitable plaster or render finishes. This makes it useful where waterproofing and direct internal finishing are both required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Newton CDM 508 Mesh Membrane work?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh Membrane works by creating a drained cavity behind the internal finish. The 8mm stud profile holds the membrane away from the wall or vaulted surface, allowing water or moisture to move behind it instead of becoming trapped against the finished room surface. That water is then directed towards suitable drainage, such as Newton CDM BaseDrain, outlets, sump chambers or pump systems. The meshed face performs a separate finishing role by providing a mechanical key for plaster, render, hydraulic lime or suitable bonded board systems. This means the membrane manages water behind the system while supporting a direct finish on the room side.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is Newton CDM 508 Mesh used for?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is used for waterproofing below-ground walls, vaulted soffits, vaults and tunnels where a Type C drained protection system is required. It is particularly useful in basements, cellars and habitable below-ground rooms where damp or water-bearing structures need to be isolated from internal finishes. The membrane creates a drainage cavity behind the finish while its meshed surface allows suitable plaster or render to bond directly to the membrane face. This makes it a practical option where a slimmer wall build-up is desired, or where an independent dry-lining frame would take up too much space. It must still be used with suitable drainage and sealing accessories.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 Mesh suitable for basement waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh is suitable for basement waterproofing when used as part of a correctly designed Newton CDM System. It is intended for earth-retained walls and similar below-ground structures where water ingress needs to be controlled and safely drained away. In basement conversions, the membrane helps separate internal finishes from damp, salt-contaminated or water-bearing walls while allowing moisture to move behind the membrane towards the drainage system. Its meshed face is useful where a direct plaster or render finish is required. When correctly specified, installed and ventilated, it can contribute to internal environments up to Grade 3 under BS 8102:2022.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is the difference between Newton CDM 508 Mesh and standard Newton CDM 508?\u003c\/h3\u003e\n\u003cp\u003eA) The main difference is the integrated meshed face. Standard Newton CDM 508 is a non-meshed 8mm cavity drain membrane that normally requires dry-lining, battens, frames or other suitable finishes in front of it. Newton CDM 508 Mesh has a polyethylene mesh thermally welded to the face, giving plaster, render, hydraulic lime or compatible bonded board systems a surface to grip. Both products manage water using an 8mm drainage cavity, but Newton CDM 508 Mesh is designed for applications where the finish is applied directly to the membrane. This can reduce build-up depth and make it useful in tighter basement or refurbishment spaces.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be plastered directly?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh can receive a direct plaster finish because its thermally welded mesh face provides a mechanical key. The recommended plaster is Tarmac Whitewall One Coat, but it should not be applied as one single coat. It should be applied in two coats, with a 6mm scratch coat followed by a 6mm second or float coat. If a finishing coat is required, this should be around 3mm. A minimum drying period of 24hours should be allowed between coats. Decoration should not begin until the plaster is thoroughly dry, as trapped moisture or premature decoration can affect the final finish quality.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be rendered directly?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh can receive an internal render finish when the correct method is followed. A sand, cement and lime render should be applied in two coats to a total thickness of 14mm, with a 3mm skim coat added after full curing if required. The scratch coat should be 7mm thick and worked firmly into the mesh to stiffen the membrane and form a sound backing. The second coat should also be 7mm thick. Each coat should be allowed to dry for at least 7 days, preferably 10 days or longer. Rushing the cure can increase the risk of cracking or weakness.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can hydraulic lime be used on Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh can receive a hydraulic lime finish where this is specified. NHL 3.5 should be used to a combined depth of 20mm, formed from a 10mm scratch coat and a 10mm second or float coat. The mix ratio is 2.5 parts sand to 1 part NHL 3.5, prepared in line with the manufacturer’s instructions. The scratch coat must be pushed firmly into the mesh and checked the next day so any cracks can be rubbed out. It should then be left for at least 7 days before the second coat is applied. The finish must be protected from draughts and temperature extremes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can plasterboard be fixed to Newton CDM 508 Mesh with adhesive dabs?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, plasterboard can be fixed to Newton CDM 508 Mesh using the dot and dab method, creating a dry surface ready for decoration. The dabs should be applied to the heads of the fixing plugs, along board edges and to the membrane surface, covering around 50% of the CDM 508 Mesh face. Care is needed with laminated or insulated plasterboard because building regulations may require mechanical fixings, and those fixings can breach the waterproofing membrane. Where insulation is required, it may be better to use a non-meshed membrane with an independent dry-lining frame rather than fixing insulated boards through the meshed membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where should Newton CDM 508 Mesh Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh Membrane should be used on walls, vaults, tunnels and suitable vaulted or sloping soffits where a drained cavity membrane and a direct finish are required. It is useful in basement waterproofing, cellar conversions, internal refurbishment of damp structures, earth-retained walls and habitable below-ground spaces. It is especially beneficial where internal space is limited and the project needs a plaster, render, hydraulic lime or bonded plasterboard finish without a full independent frame. The membrane should be selected only where drainage can be designed correctly and where the substrate can receive secure mechanical fixings. It is not a standalone waterproofing sheet.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be used on floors?\u003c\/h3\u003e\n\u003cp\u003eA) No, Newton CDM 508 Mesh should not be used as a floor membrane. It is designed for walls, vaults, tunnels and suitable vaulted or sloping soffit applications where the meshed face can receive plaster, render, hydraulic lime or bonded plasterboard. Floor waterproofing requires a suitable Newton floor membrane selected for the expected loading, screed, insulation or flooring build-up. Using Newton CDM 508 Mesh on a floor would be outside its intended use and could compromise the system design. If a project includes both walls and floors, Newton CDM 508 Mesh may be used on walls while a separate compatible Newton floor membrane is specified for the floor area.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be used on flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is not suitable for flat soffits. Soffit waterproofing should be limited to appropriate vaulted, arched or sloping applications where water can drain and ponding can be avoided. Flat soffits are difficult because water may sit behind the membrane if there is not enough fall, and sagging can create pockets where water collects. In a Type C system, water must always be able to move towards the designed drainage route. If a flat soffit requires waterproofing, a different design or specialist technical advice should be considered. Newton CDM 508 Mesh should not be treated as a routine membrane for flat overhead surfaces.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What substrates can Newton CDM 508 Mesh be fixed to?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh can be fixed to walls formed from concrete, brick and concrete block. It may also be fixed to ICF construction where special longer fixing plugs are used. The substrate must be capable of accepting a secure mechanical fixing, because the membrane and finish depend on the fixings holding properly. Weak, friable, loose or heavily deteriorated backgrounds should be repaired or made good before installation. Vaulted or arched soffits must also be stable and suitable for fixing. The wall does not need to be prepared like a direct-applied coating system, but it must still be sound enough for safe, secure and consistent membrane installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What preparation is needed before installing Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Before installing Newton CDM 508 Mesh, the area should be assessed and cleared of materials that could decay or support mould growth behind the system. Timber, skirting boards, timber plates, old wallpaper and other organic materials should be removed. If rot is present, it should be treated by a specialist, and any mould should be cleaned and sterilised with a suitable fungicidal wash. Loose material, sharp projections, unstable areas and large depressions should be addressed so the membrane can be fixed neatly and securely. The surface does not need to be decorative-smooth, but it must be clean, stable and capable of receiving the correct fixings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why is drainage important with Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Drainage is essential because Newton CDM 508 Mesh does not stop hydrostatic pressure as a standalone barrier. It is part of a Type C cavity drain system, which controls water by allowing it to enter the cavity and then directing it away safely. Water should be collected by channels such as Newton CDM BaseDrain and discharged to a sump chamber, pump or safe natural drainage route. If drainage is missing, blocked or undersized, water can build up behind the system and compromise performance. The design must consider likely water ingress, groundwater conditions, discharge routes, pump capacity and maintenance access. The membrane only works properly as part of a complete drainage system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Newton CDM 508 Mesh fixed to walls?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is generally fixed vertically, with the mesh face towards the room and the studded side against the substrate. A hole is drilled through the centre of a stud near the top edge using the correct drill bit for the chosen fixing plug. The plug is then driven into place until it sits flush within the stud and seals the fixing point. The membrane should be levelled using a spirit level or laser level before further fixings are installed. Following sheets should overlap correctly and be sealed with Newton CDM Joint Tape. Good alignment is important because poor positioning can cause kinks, weak joints or finishing difficulties.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fixing centres are required for Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh needs closer fixing centres than non-meshed membranes because it carries a direct plaster, render or bonded board finish. Fixings should be installed in a square pattern at 350mm centres, with an additional fixing in the centre of each group of four fixings, similar to the number 5 on a dice. This means all fixings are at a maximum of 250mm centres. On very flat walls, horizontal and vertical centres may be increased to 400mm, provided the centre fixing is still included so final centres are not more than 300mm. Secure, well-aligned fixings help reduce movement and improve finish performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are joints in Newton CDM 508 Mesh sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Joints in Newton CDM 508 Mesh should be sealed using compatible Newton CDM accessories, selected according to the joint type. The preferred joint is usually a flanged joint, with Newton CDM Joint Tape placed beneath the flange between the membrane surfaces. Where a flange is not available but the studs interlock correctly, a stud-into-stud joint may be formed with a minimum three-stud overlap and CDM Joint Tape. Where the studs do not interlock, a stud-over-stud joint should be made with a minimum three-row overlap and CDM Rope. All sealing surfaces must be clean, dry and dust free, and the joint should be pressed firmly to ensure adhesion.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) When should Newton Mesh Tape be used with Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Newton Mesh Tape should be used wherever a sealed joint, repair or detail on Newton CDM 508 Mesh needs the plaster or render key reinstated. Products such as Newton CDM Joint Tape, CDM Rope and CDM OverTape can create the waterproof seal, but they do not provide the same meshed surface required for direct finishing. Applying Newton Mesh Tape over the sealed area restores a suitable fleece key, allowing plaster or render to bond across the joint rather than sitting on a plain tape or rope detail. This is especially important over laps, repairs, protrusions, door reveals and other areas where the meshed surface has been interrupted.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be used on vaulted soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh can be used on vaulted soffits and arched structures where the membrane can be fixed and detailed so water drains correctly. The membrane must be held tight to the soffit without sagging, and laps must not create pockets where water can pond. On vaulted ceilings, the standard rubber sealing washer supplied with some Newton CDM plugs should not be used. Instead, a ring of Newton CDM Rope should seal the plug fixing. Fixings are installed through the centre of the membrane studs and should be kept aligned. Vaulted installations require careful planning, safe access, accurate cutting and reliable drainage detailing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are pipes and services sealed through Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Pipes, cables, conduits and other services should be avoided through Newton CDM 508 Mesh where possible because they interrupt the waterproofing layer. Where a penetration is unavoidable, the membrane should be cut neatly around the service and sealed with suitable Newton accessories such as CDM Rope, CDM OverTape, pipe collars or pipe sleeves. Where adhesion to the protrusion needs improvement, priming may be required depending on the detail. Once the waterproof seal is formed, Newton Mesh Tape should be used over non-meshed sealing products where plaster or render will continue across the area. Services in vaulted areas should ideally be moved to vertical surfaces wherever practical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 508 Mesh need protecting after installation?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh should be protected by suitable finishes after installation. It is designed to receive plaster, render, hydraulic lime, bonded plasterboard or other specified internal finishes, but it should not be left exposed to long-term UV light, impact, abrasion or general wear. Its service life depends on correct specification, installation and protection. Follow-on trades should avoid cutting, drilling, over-fixing or damaging the membrane before it is covered. Any damage must be repaired before finishes are applied. The membrane also needs protection from fire by the selected surface finish. Leaving it exposed or vulnerable to site damage can compromise the waterproofing system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fire rating does Newton CDM 508 Mesh have?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh has a fire rating of Euroclass F under BS EN 13501-1. It should therefore be treated like a plastic-based construction product that must be protected from fire by suitable surface finishes. The membrane should not be left exposed where the fire strategy requires a protected build-up. Plaster, render, plasterboard or other approved finishes should be installed in a way that covers and protects the membrane while maintaining the waterproofing design. Where a project requires higher fire performance, Newton has fire-resistant membrane options tested and classified to B-s2,d0, but those would need to be specified separately according to the project requirements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 Mesh suitable for gas protection?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is not suitable for gas protection systems. It should not be relied upon for radon, methane or hydrocarbon gas resistance. If a project requires gas protection as well as waterproofing, an appropriate gas-rated Newton system should be specified instead. This is important because below-ground projects can face both water ingress and ground gas risks, but the products used to manage each risk must be suitable for that purpose. Newton CDM 508 Mesh is designed for waterproofing and damp management where a meshed surface is needed for plaster, render, hydraulic lime or bonded plasterboard. Gas protection requires a separate specification.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What ventilation is needed with Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Ventilation is important in rooms waterproofed with Newton CDM 508 Mesh, especially where the space will be habitable. Basements and earth-retained rooms are often difficult to ventilate naturally because many walls are below ground. Mechanical ventilation, dehumidification or air conditioning may be needed to control relative humidity and reduce condensation risk. BS 8102:2022 recognises that environmental control is important for Grade 3 spaces. Condensation can occur when warm, moist air meets cooler surfaces, particularly where insulation reduces heat reaching the membrane face. The wider Newton CDM System can include condensation collection details, but room ventilation should still be properly designed for the intended use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What technical data applies to Newton CDM 508 Mesh?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is manufactured from HDPE and is supplied in 2.0m x 20m rolls, covering 40m². It has a density of 505g\/m², a membrane thickness of 0.6mm, a stud height of 7.0mm and a packaged weight of 20.2kg. Its working temperature range is -50°C to +80°C, and the softening temperature is 126°C. The membrane passes water tightness testing at 60kPa for 24hours to EN 1928. Tensile strength is listed as 416N in the machine direction and 488N in the cross direction, with compressive strength stated as 180kN. Fire resistance is listed as Euroclass F.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 Mesh BBA Certified?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh is supported by BBA Agrément Certificate 22\/6357, giving independent assessment for defined waterproofing applications when used in accordance with the relevant system guidance. It is also intended for use within designs that consider BS 8102:2022, particularly where Grade 3 internal environments are required. The product is guaranteed against deterioration for 30 years and has a stated life expectancy of at least 100 years, or equal to the design life of the building when correctly installed and protected. The membrane is inert, rot-proof, non-polluting to drinking water and resistant to a wide range of below-ground contaminants.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How long does Newton CDM 508 Mesh last?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is intended as a long-term waterproofing component when correctly specified, installed and protected. The supplied information states that it is guaranteed against deterioration for 30 years and has a life expectancy equal to the design life of the building, with a stated life expectancy of at least 100 years. This durability depends on the membrane being protected from UV light, physical damage, abrasion, fire exposure and unnecessary puncturing. It must also be used as part of a maintained cavity drain system, because the long-term performance of the waterproofing relies on drainage, pumps, inspection access and discharge routes continuing to work properly.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 508 Mesh require maintenance?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh itself requires very little maintenance once it is installed and protected behind the final finish. However, the wider Newton CDM System does require maintenance because drainage channels, sump chambers, pumps, alarms and discharge routes must remain operational. A competent person should inspect and service the system at least once per year, with additional pump manufacturer requirements followed where applicable. Maintenance may include flushing drainage channels, removing debris from sumps, checking pumps, testing alarms, inspecting discharge pipes and confirming electrical connections. If the waterproofed space depends on pumping, a suitable battery back-up system should be considered to protect the area during a power failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Mesh be repaired if damaged?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Mesh can be repaired if it is damaged, but repairs should be completed before finishes are applied. If the wrong stud is drilled, the stud should be cleaned, plugged with Newton CDM Rope and covered with a small patch of CDM OverTape. Cuts, rips or punctures should be cleaned and bridged with CDM OverTape, extending at least 25mm beyond the damaged area. Larger holes may require a membrane patch sealed around the perimeter. Where the repair area will receive plaster or render, Newton Mesh Tape should be applied over the sealed repair to reinstate the surface key. All repair surfaces must be clean and dry.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Newton CDM 508 Mesh Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Mesh is not a standalone waterproofing product and has no ability to withstand water pressure by itself. It must be used as part of a properly designed Type C cavity drain system with suitable drainage, discharge, inspection access and maintenance. It is not suitable for flat soffits, floor applications or gas protection systems. It also relies on correct fixing density, sound substrates, clean and sealed joints, suitable ventilation and appropriate finishing methods. Plaster and render must be applied correctly and allowed to cure fully before decoration. The membrane should not be punctured by future fixings, and any later alterations should be checked with a specialist first.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_TECH.pdf?v=1782477109\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_TECH.pdf?v=1782477109\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_TECH_160x160.jpg?v=1782476926\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_160x160.jpg?v=1613707156\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_DOP.pdf?13531257300286533905\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_DOP.pdf?13531257300286533905\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_DEC_OF_PERFORMANCE_160x160.jpg?v=1613707212\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_BBA_dc0006d2-f308-4bfd-8730-7a61531028de.pdf?13531257300286533905\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_BBA_dc0006d2-f308-4bfd-8730-7a61531028de.pdf?13531257300286533905\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_MESH_BBA_160x160.jpg?v=1613707212\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":8159202705507,"sku":"NM3","price":238.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508-mesh-membrane-8mm-studded-waterproof-meshed-w-2-0m-x-l-20m-40m-basement-membranes-663.webp?v=1782905699"},{"product_id":"newton-508r-8mm-cavity-drain-radon-barrier-membrane","title":"Newton CDM 508R RADON - Cavity Drain Waterproof Radon Membrane (8mm Stud)","description":"\u003cp\u003eNewton 508R is a premium 8mm studded cavity drain waterproofing membrane designed for use as part of the Newton CDM Type C waterproofing system. Heavier and stronger than standard 8mm membranes, it is well suited to earth-retained walls, vaulted soffits and floors, while also being independently tested as a barrier to radon gas and hydrocarbons.\u003c\/p\u003e\n\u003cp\u003eNewton 508R is rot-proof, chemically resistant and resistant to bacteria, fungi, small organisms, salts, acids, alkalis and contaminated groundwater. Supported by BBA Certification Number 94\/3010, the membrane is guaranteed against deterioration for 30 years and has a life expectancy equal to the design life of the building.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch2\u003e\n\u003cstrong\u003e\u003cspan\u003eKey Features of Newton CDM 508R RADON \u003c\/span\u003eMembrane\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ Premium 8mm studded cavity drain membrane, heavier and stronger than standard membranes for demanding below ground applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Independently tested as an effective barrier to radon gas and hydrocarbons for contaminated ground sites.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Just 2% compression over 50 years to ISO 25619-1, making it ideal for floor loading applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Rot-proof and resistant to bacteria, fungi, salts, acids, alkalis and contaminated groundwater for long service life.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified with 30-year guarantee against deterioration and life expectancy equal to the building design life.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003ePremium 8mm Studded Cavity Drain Membrane For Basement Waterproofing And Gas Protection\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton 508R is a high-performance 8mm studded waterproof membrane developed for demanding basement waterproofing, below ground waterproofing and ground gas protection applications. It is installed as part of the Newton CDM System, an internally applied Type C cavity drain waterproofing system that manages water ingress by creating a controlled drainage void between the structure and the internal finish. Rather than attempting to hold back all water at the face of the substrate, the membrane allows moisture to enter the cavity behind it and directs it towards a designed drainage and pumping system. This makes it particularly well suited to earth-retained walls, retaining structures, vaulted soffits and floors, where water pressure, dampness or ground gases must be managed in a controlled and maintainable way over the long term.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eEnhanced Strength And Compression Resistance For Demanding Floor Applications\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eAs a premium version of a standard 8mm cavity drain membrane, Newton 508R is notably heavier and stronger, with enhanced physical performance and excellent resistance to compression compared with more basic alternatives. This is especially important in floor applications where the membrane may be subject to sustained long-term loading from screeds, finishes, insulation, partitions or the normal everyday demands of building use. Third-party long-term compressive load testing to ISO 25619-1 confirms just 2% compression over 50 years, and the membrane also demonstrates high compressive loading stability when used beneath a suitable C16 screed. This makes it a genuinely practical and dependable choice wherever a robust waterproof floor membrane is required as part of a basement conversion, commercial refurbishment or below ground waterproofing system.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eIndependently Tested Radon Gas And Hydrocarbon Barrier Performance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton 508R is independently tested as an effective radon gas barrier and hydrocarbon barrier, making it particularly well suited to projects where waterproofing and ground gas protection must be addressed together within a single membrane system. It is the selected membrane for use within the patented Newton PAC-500 combined ground gas and waterproofing system, giving it specific relevance for sites affected by radon, liquid hydrocarbons or contaminated ground conditions. The membrane itself is inert and non-polluting to drinking water, resistant to water, alkalis, saline solutions and organic acids, and entirely unaffected by minerals or hydrocarbons. It is also rot-proof and resistant to bacteria, fungi and small organisms, all of which supports a genuinely long and dependable service life in damp, below ground and contaminated environments.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003ePractical Internal Installation Suited To Refurbishment And Conversion Projects\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eBecause Newton 508R is installed internally, it does not require the extensive and potentially damaging surface preparation that some bonded tanking systems demand of their substrates. This can significantly reduce disruption, help preserve more of the existing structure and make it a highly practical choice for refurbishment projects where substrates are uneven, contaminated, damp or simply too difficult to prepare fully to the standard required for a bonded system. When correctly incorporated into a complete Type C system, including suitable drainage, pumping, ventilation and humidity control where required, Newton 508R can contribute to achieving a Grade 3 internal environment in accordance with BS 8102:2022. For those searching for an 8mm cavity drain membrane, radon barrier membrane, hydrocarbon barrier membrane, Type C waterproofing membrane or basement waterproofing membrane, Newton 508R provides a strong, certified and technically robust solution.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-811_1024x1024.webp?v=1779713180\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePremium 8mm Studded Membrane Construction: \u003c\/strong\u003eNewton 508R is heavier and stronger than standard 8mm membranes, making it well suited to demanding waterproofing applications where long-term durability, compressive stability and robust site performance are all important.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eType C Cavity Drain Waterproofing Performance:\u003c\/strong\u003e Designed for use within the Newton CDM System, the membrane provides a controlled drainage cavity behind internal finishes, helping manage water ingress rather than relying solely on a surface-bonded barrier.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable for Walls, Floors and Vaulted Soffits: \u003c\/strong\u003eThe product can be used on earth-retained walls, floors and vaulted soffits, making it highly versatile for basements, cellars, tunnels, arches, retaining structures and below ground spaces.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eIndependently Tested Radon Barrier:\u003c\/strong\u003e Newton 508R is independently tested as a barrier to radon ground gases, making it well suited to waterproofing specifications where radon resistance is required alongside water management.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHydrocarbon Barrier Capability:\u003c\/strong\u003e The membrane is independently tested for resistance to liquid hydrocarbons and is suitable for contaminated ground situations where hydrocarbon protection is part of the waterproofing and gas protection design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStrong Long-Term Compressive Stability: \u003c\/strong\u003eThird-party testing to ISO 25619-1 demonstrates long-term compressive load stability, showing just 2% compression over 50 years, helping support confidence in floor build-ups and loaded applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Load Transfer Through C16 Screed: \u003c\/strong\u003eThe membrane has a permanent load transfer value of 800kPa through a C16 screed, making it well suited to robust floor systems where loads must be distributed effectively through the screed layer.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResistant to Chemical and Biological Attack: \u003c\/strong\u003eNewton 508R is resistant to rot, bacteria, fungi, small organisms, acids, alkalis, saline solutions, efflorescing salts, chemically aggressive groundwater and hydrocarbon contamination, helping support a long service life in harsh below ground environments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Surface Preparation Compared with Bonded Systems: \u003c\/strong\u003eThe membrane does not require extensive or damaging wall preparation, making it practical for refurbishment projects where existing substrates may be uneven, damp or difficult to prepare fully.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certified and Long Service Life: \u003c\/strong\u003eSupported by BBA Certification Number 94\/3010, Newton 508R is guaranteed against deterioration for 30 years and has a life expectancy equal to the design life of the building when used correctly within the system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing Systems: \u003c\/strong\u003eNewton 508R is well suited to internal basement waterproofing as part of a Type C cavity drain membrane system, helping manage water ingress from earth-retained walls and floors.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversion Projects: \u003c\/strong\u003eIdeal for cellar waterproofing where existing masonry or concrete structures require a reliable internal drainage membrane before finishes are installed, subject to correct system design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Wall Waterproofing:\u003c\/strong\u003e The membrane has been designed for use on retaining walls and below ground walls where water pressure, dampness and salts may be present behind the structure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFloor Waterproofing Applications: \u003c\/strong\u003eNewton 508R can be used as a floor membrane within the Newton CDM System, including applications where screeds and floor finishes are installed above the membrane.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Soffits and Arched Structures:\u003c\/strong\u003e Well suited to vaulted soffits, arches and similar below ground structures where a flexible, mechanically fixed cavity drain waterproofing system is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRadon Gas Protection: \u003c\/strong\u003eThe membrane can be specified in situations where a radon barrier is needed alongside waterproofing, making it well suited to ground gas protection in radon-affected areas.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHydrocarbon Contaminated Sites: \u003c\/strong\u003eIts tested resistance to liquid hydrocarbons makes Newton 508R well suited to projects where contaminated ground or hydrocarbon exposure must be considered in the waterproofing design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNewton PAC-500 Combined Systems: \u003c\/strong\u003eNewton 508R is the chosen membrane for use within the patented Newton PAC-500 combined ground gas and waterproofing system, where both gas protection and water management are required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial and Residential Below Ground Refurbishment:\u003c\/strong\u003e Well suited to both domestic basement conversions and commercial below ground spaces where a robust, maintainable waterproofing strategy is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 Waterproofing Environments: \u003c\/strong\u003eWhen correctly incorporated into a complete system with suitable drainage, pumping, ventilation and humidity control, Newton 508R can contribute to achieving a Grade 3 internal environment in accordance with BS 8102:2022.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certification Number 94\/3010: \u003c\/strong\u003eBBA certification provides independent assessment of the product’s suitability and performance under defined conditions of use. This gives specifiers, contractors and property owners added confidence when Newton 508R is used within appropriate waterproofing designs.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Waterproofing Relevance: \u003c\/strong\u003eNewton 508R is used as part of a Type C cavity drain waterproofing system, which is a recognised waterproofing approach under BS 8102:2022 for below ground structures. With correct design, drainage, pumps and environmental control, it can contribute to Grade 3 internal environments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eISO 25619-1 Long-Term Compressive Load Testing:\u003c\/strong\u003e The membrane has been third-party tested for long-term compressive load performance to ISO 25619-1, showing 2% compression over 50 years. This is particularly important for floor applications where stability beneath screeds and finishes really matters.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEN 25619-2 Temporary Compressive Strength Testing: \u003c\/strong\u003eTemporary compressive strength of 280kPa to EN 25619-2 indicates the membrane’s ability to withstand short-term loading conditions during installation, construction activity and temporary service demands.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEN 12667 Thermal Conductivity Testing:\u003c\/strong\u003e Thermal conductivity of 0.461W\/mK to EN 12667 provides a measured value for heat transfer through the material, which may be relevant when designing floor and wall build-ups.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS EN 1931 Water Vapour Resistance Testing:\u003c\/strong\u003e The membrane has an Sd value greater than 604m, a μ value greater than 1,208,000μ and water vapour diffusion resistance greater than 3,020MNs\/g, showing very high resistance to water vapour transmission.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEN 14030 Chemical Resistance Testing: \u003c\/strong\u003eChemical resistance is stated as excellent at 100% to EN 14030, supporting use in challenging below ground environments where groundwater, salts and chemical exposure may be present.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEN ISO 13438 Oxidation Resistance Testing: \u003c\/strong\u003eOxidation resistance is stated as excellent at 100% to EN ISO 13438, indicating strong resistance to degradation through oxidative ageing.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRadon Gas Resistance Testing K124\/02\/95: \u003c\/strong\u003eThe membrane has a radon gas resistance value of 3.3 x 10⁻¹²m²\/s, with joints tested at 3.4 x 10⁻¹²m²\/s, confirming its suitability as an independently tested radon barrier when correctly installed and jointed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEN 16140:2011 Liquid Hydrocarbon Resistance: \u003c\/strong\u003eNewton 508R has passed testing for resistance to liquid hydrocarbons to EN 16140:2011, supporting use in situations where hydrocarbon barrier performance is required in contaminated ground applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS EN 13501-1 Reaction to Fire Classification: \u003c\/strong\u003eThe reaction to fire is not tested and is therefore classified as Euroclass F. This means no declared fire performance should be assumed, and the membrane should be used within appropriate construction build-ups and project fire design requirements.\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R performs particularly well because it combines the principles of Type C cavity drain waterproofing with enhanced physical strength and specialist gas barrier capability. Its 8mm studded profile creates a drainage cavity that allows water to move behind the membrane towards a designed drainage and pumping system. This approach is especially beneficial in below ground structures because it acknowledges that water may enter the building fabric, and manages it in a controlled way rather than relying entirely on a bonded coating resisting all pressure.\u003c\/p\u003e\n\u003cp\u003eIts compressive strength data is a major advantage for floor and loaded applications. The membrane has a temporary compressive strength of 280kPa, a permanent compressive strength of 7kPa and a much higher permanent load transfer capacity of 800kPa through a C16 screed. This clearly demonstrates why correct floor build-up design matters. When loads are spread through the screed, the system is able to cope with significantly higher loading, making Newton 508R well suited to robust internal waterproof floor specifications.\u003c\/p\u003e\n\u003cp\u003eThe water vapour resistance values are also highly significant. With an Sd value greater than 604m and a μ value greater than 1,208,000μ, the membrane provides very high resistance to vapour transmission. This can help support vapour control when used with suitable humidity control systems, contributing to internal environments that are capable of meeting Grade 3 requirements under BS 8102:2022. This is particularly important in habitable basement conversions, archives, commercial rooms, storage spaces and other below ground environments where moisture control is essential.\u003c\/p\u003e\n\u003cp\u003eNewton 508R also offers strong durability in aggressive below ground conditions. Its excellent chemical resistance, oxidation resistance, resistance to salts and hydrocarbons, and resistance to biological attack all help protect the membrane from the most common causes of deterioration. The independent radon and hydrocarbon testing further broadens its use beyond standard waterproofing, making it well suited to situations where water ingress and ground gas contamination must be addressed together. Combined with BBA Certification Number 94\/3010, a 30-year guarantee against deterioration and a design life expectation equal to the building itself, Newton 508R is a technically strong and dependable choice for professional basement waterproofing, radon gas protection and hydrocarbon barrier applications.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-newton-508r-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-508r-table {\n    width: 100%;\n    min-width: 720px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-508r-table col:nth-child(1) { width: 33%; }\n  .pc-newton-508r-table col:nth-child(2) { width: 31%; }\n  .pc-newton-508r-table col:nth-child(3) { width: 14%; }\n  .pc-newton-508r-table col:nth-child(4) { width: 22%; }\n\n  .pc-newton-508r-table th,\n  .pc-newton-508r-table td {\n    border: 5px solid #fff;\n    padding: 8px 12px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-newton-508r-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-newton-508r-table .pc-column-head th,\n  .pc-newton-508r-table .pc-section-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 400;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-508r-table .pc-column-head th:nth-child(2),\n  .pc-newton-508r-table .pc-section-head th:nth-child(2) {\n    text-align: center;\n  }\n\n  .pc-newton-508r-table .pc-data-row td {\n    background: #fff;\n  }\n\n  .pc-newton-508r-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-508r-table td:nth-child(1) {\n    text-align: left;\n  }\n\n  .pc-newton-508r-table td:nth-child(2),\n  .pc-newton-508r-table td:nth-child(3) {\n    text-align: center;\n  }\n\n  .pc-newton-508r-table td:nth-child(4) {\n    text-align: left;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-508r-table {\n      font-size: 14px;\n      min-width: 680px;\n    }\n\n    .pc-newton-508r-table th,\n    .pc-newton-508r-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-newton-508r-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-508r-table .pc-column-head th,\n    .pc-newton-508r-table .pc-section-head th {\n      font-size: 16px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-508r-table-wrap\"\u003e\n\u003ctable class=\"pc-newton-508r-table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eFeatures\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e700\u003c\/td\u003e\n\u003ctd\u003eg\/m²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e2.0 \/ 2.4\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eLength\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eArea\u003c\/td\u003e\n\u003ctd\u003e40 \/ 48\u003c\/td\u003e\n\u003ctd\u003em²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eMembrane thickness\u003c\/td\u003e\n\u003ctd\u003e0.8\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eStud depth\u003c\/td\u003e\n\u003ctd\u003e7.2\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eVicat softening temperature\u003c\/td\u003e\n\u003ctd\u003e126\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003ePackaged weight\u003c\/td\u003e\n\u003ctd\u003e28.0 \/ 33.6\u003c\/td\u003e\n\u003ctd\u003ekg\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eService temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +80\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-head\"\u003e\n\u003cth\u003eInstalled Performance\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eCompressive strength - Temporary\u003c\/td\u003e\n\u003ctd\u003e280\u003c\/td\u003e\n\u003ctd\u003ekPa\u003c\/td\u003e\n\u003ctd\u003eEN 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eCompressive strength - Permanent\u003c\/td\u003e\n\u003ctd\u003e7\u003c\/td\u003e\n\u003ctd\u003ekPa\u003c\/td\u003e\n\u003ctd\u003eEN 25619-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eCompressive strength - Permanent - load transferred through a C16 screed*\u003c\/td\u003e\n\u003ctd\u003e800\u003c\/td\u003e\n\u003ctd\u003ekPa\u003c\/td\u003e\n\u003ctd\u003eEN 25619-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eThermal conductivity\u003c\/td\u003e\n\u003ctd\u003e0.461\u003c\/td\u003e\n\u003ctd\u003eW\/mK\u003c\/td\u003e\n\u003ctd\u003eEN 12667\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eWater vapour resistance – Sd value\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;604\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003eBS EN 1931\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eWater vapour resistance – μ value\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;1208000\u003c\/td\u003e\n\u003ctd\u003eμ\u003c\/td\u003e\n\u003ctd\u003eCalculated from Sd value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eWater vapour diffusion resistance\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;3020\u003c\/td\u003e\n\u003ctd\u003eMNs\/g\u003c\/td\u003e\n\u003ctd\u003eCalculated from Sd value\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eResistance to fire - Euroclass\u003c\/td\u003e\n\u003ctd\u003eNot tested - F\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eChemical resistance – Excellent\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e%\u003c\/td\u003e\n\u003ctd\u003eEN 14030\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eOxidation resistance – Excellent\u003c\/td\u003e\n\u003ctd\u003e100\u003c\/td\u003e\n\u003ctd\u003e%\u003c\/td\u003e\n\u003ctd\u003eEN ISO 13438\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eRadon gas resistance - Membrane\u003c\/td\u003e\n\u003ctd\u003e3.3 x 10\u003csup\u003e-12\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003ctd\u003em²\/s\u003c\/td\u003e\n\u003ctd\u003eK124\/02\/95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd\u003eRadon gas resistance - Joints\u003c\/td\u003e\n\u003ctd\u003e3.4 x 10\u003csup\u003e-12\u003c\/sup\u003e\n\u003c\/td\u003e\n\u003ctd\u003em²\/s\u003c\/td\u003e\n\u003ctd\u003eK124\/02\/95\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd\u003eResistance to liquid hydrocarbons\u003c\/td\u003e\n\u003ctd\u003ePassed\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eEN 16140:2011\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cem\u003e\u003cbr\u003e\u003cstrong\u003eThe above data, even if carried out according to regulated tests are indicative and they may change when specific site conditions vary. *Screeds placed above non-bonded materials such as sheet HDPE membranes are categorised as floating screeds within BS 8204 \u0026amp;amp; BS 13318 and require a section thickness of 65mm or more for sand and cement, or 35–40 mm for proprietary liquid screeds. Check load capability with proprietary liquid screed supplier. Further information is included within the Protection Of The Membrane and Compressive Load sections on page 4 of the \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH.pdf?v=1779708789\" target=\"_blank\"\u003eTechnical Data Sheet\u003c\/a\u003e.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/h6\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm-508r-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table col:nth-child(1) { width: 26%; }\n  .pc-newton-cdm-508r-ancillary-table col:nth-child(2) { width: 74%; }\n\n  .pc-newton-cdm-508r-ancillary-table th,\n  .pc-newton-cdm-508r-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 13px 10px;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-section-title th {\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 12px;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-column-head th {\n    background: #a6a6a6;\n    color: #111;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm-508r-ancillary-table .pc-product-cell {\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-cdm-508r-ancillary-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-newton-cdm-508r-ancillary-table th,\n    .pc-newton-cdm-508r-ancillary-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-newton-cdm-508r-ancillary-table .pc-main-title th {\n      font-size: 23px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-cdm-508r-ancillary-table .pc-section-title th {\n      font-size: 18px;\n      padding: 10px 9px;\n    }\n\n    .pc-newton-cdm-508r-ancillary-table .pc-column-head th {\n      font-size: 18px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm-508r-ancillary-table-wrap\"\u003e\n\u003ctable class=\"pc-newton-cdm-508r-ancillary-table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"2\"\u003eNewton CDM 508R Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplugs-cavity-drain-membrane-fixing-plugs-a1\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM MultiPlugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist membrane fixing plugs used to mechanically secure Newton 508R Membrane to suitable wall substrates. The rubber sealing washer helps reseal the fixing point, supporting waterproofing and gas barrier continuity in standard wall applications.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-nuseal-plugs-vaulted-ceiling-membrane-fixing-a2\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM NuSeal Plugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist sealed fixing plugs used for vaulted, sloping or overhead applications where the rubber washer from a standard CDM MultiPlug is not suitable. These are sealed with Newton CDM Rope to create a reliable watertight fixing detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-joint-tape-double-sided-butyl-membrane-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Joint Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-sided butyl jointing tape used to seal membrane overlaps, flanged joints and sheet-to-sheet connections. It helps maintain waterproofing continuity and, where relevant, supports the gas barrier detailing of the Newton 508R system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Rope\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eButyl sealing rope used where a flange seal is not possible, around more awkward details, stud-to-stud joints, protrusions and NuSeal Plug fixings in vaulted or overhead work. It provides a flexible seal around irregular membrane junctions and penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-overtape-butyl-membrane-sealing-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eWider detailing tape used for sealing abutting joints, repairs, reveal details and connections between floor membranes, wall membranes and BaseDrain upstands. It is particularly useful where a broader surface seal is required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton 109-LM\u003c\/td\u003e\n\u003ctd\u003eSuitable primer used where protrusions may need priming before sealing products are applied. It helps support adhesion where Newton CDM Rope, Newton CDM OverTape or other sealing products need to bond to difficult service penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePerimeter drainage channel normally positioned at the wall-to-floor junction to collect water from behind the wall membrane and from the vulnerable wall\/floor junction. It directs water towards a suitable sump, gully, waste pipe or drainage outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM FloorDrain\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDrainage channel used where required within larger or more detailed Newton CDM waterproofing designs. It can assist with floor-level water collection and cross drainage where the system design requires it.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDetail strip used with Newton CDM BaseDrain to help form the correct connection between the floor membrane and drainage channel. It assists with managing moisture and condensation at the floor-to-drainage interface.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Inspection Ports\u003c\/td\u003e\n\u003ctd\u003eAccess points incorporated into the drainage system to allow future inspection, cleaning and maintenance of the drainage channel. They help keep the drainage route serviceable after the membrane and finishes have been installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton CDM BaseBoard\u003c\/td\u003e\n\u003ctd\u003eAlternative drainage method that may be considered where existing floor levels do not provide enough headroom for Newton CDM BaseDrain within a Newton CDM Fibran XPS 500-C spacer build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003eSump Chambers\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eChambers used to collect water from the cavity drain system before it is pumped or discharged to a suitable outlet. They form part of the wider drainage and water management arrangement where natural drainage is not suitable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003ePumping Equipment\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePumping equipment used where water collected by the drainage system needs to be removed mechanically. The pump arrangement must be sized to suit the expected water ingress, pumping head, discharge distance and drainage layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eGullies And Waste Pipes\u003c\/td\u003e\n\u003ctd\u003eDrainage connection points that can be used with Newton CDM BaseDrain where suitable. They help direct collected water away from the cavity drain system as part of the designed drainage route.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eDischarge Pipes\u003c\/td\u003e\n\u003ctd\u003ePipework used to carry water away from the sump and pump arrangement to the chosen discharge point. Correct discharge design is important where the waterproofed area relies on pumping to remain dry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" rel=\"noopener\" target=\"_blank\"\u003eHigh Water Level Alarms\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAlarm systems used to warn of high water levels within a sump chamber. They provide additional protection by alerting the user before water levels rise high enough to affect the waterproofed area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eBattery Back-Up Systems\u003c\/td\u003e\n\u003ctd\u003eBack-up power systems used where the waterproofed area relies on pumps and needs additional protection during a power failure. They should be sized to suit the expected water volume and risk profile of the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eMonitoring And Telemetry Systems\u003c\/td\u003e\n\u003ctd\u003eMonitoring systems used where additional pump and drainage oversight is required. They can provide early warning of pump issues, high water levels or maintenance requirements within higher-risk waterproofing designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton 106 Lime Inhibitor \/ \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti Lime Sealer\u003c\/a\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAnti-lime treatments used on new concrete to help reduce the risk of free lime being drawn out by water movement. They help protect drainage paths, membrane voids and channels from lime scale build-up within the cavity drain system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClosed-cell extruded polystyrene insulation used within suitable Newton CDM floor build-ups. It can support the approved insulation spacer build-up where Newton 508R is installed above insulation as part of the floor system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003eDamp Proof Course (DPC)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDPC patching detail used where service penetrations through the floor membrane cannot be avoided. It can be sealed to the service with Newton CDM Rope and around the perimeter with Newton CDM Joint Tape.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Collar\u003c\/td\u003e\n\u003ctd\u003ePreformed pipe sealing accessory used where service penetrations through Newton 508R cannot be avoided. It helps create a controlled seal around pipes and other protrusions through the membrane system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Sleeve\u003c\/td\u003e\n\u003ctd\u003ePipe sealing accessory used where services must pass through the Newton 508R membrane. It helps maintain waterproofing and gas barrier continuity around pipe penetrations when installed as part of the correct sealing detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R is a professional-grade 8mm studded cavity drain membrane and radon gas barrier intended for use as part of the Newton CDM Type C waterproofing system. It should be installed only by suitably experienced contractors who understand structural waterproofing, cavity drain membrane installation, drainage design, pump systems, gas barrier detailing and below ground waterproofing requirements. Newton states that the CDM System should be installed by trained Newton Specialist Contractors, which is also stated as a requirement of the BBA Certificate.\u003c\/p\u003e\n\u003cp\u003eBefore installation, the relevant \u003cstrong\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH.pdf?v=1779708789\" target=\"_blank\"\u003eTechnical Data Shee\u003c\/a\u003et\u003c\/strong\u003e and \u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_INSTALLATION_MANUAL.pdf?v=1779708790\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e should be read in full. Suitable PPE should be worn throughout the work, including gloves, safety glasses and appropriate protective clothing. Where drilling, cutting, trimming or preparing masonry is involved, dust control, respiratory protection, hearing protection and safe electrical working practices should be considered. Staging or scaffold should be used for safe working at height, particularly when applying Newton 508R to high walls, vaulted soffits or arch details. The manual identifies PPE, gloves and safety glasses as minimum wall installation requirements, alongside suitable drilling, cutting and measuring equipment.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R must not be treated as a standalone waterproofing product. It has no capability to withstand water pressure by itself and must be used as part of a correctly designed Type C cavity drain waterproofing system that safely collects and removes water from the building. The Newton CDM System works by creating depressurisation spaces using the studded membrane and drainage channels, then directing water to a safe discharge point, such as a sump and pump system or reliable gravity drainage.\u003c\/p\u003e\n\u003cp\u003eFor below ground waterproofing work, the overall design should be considered in accordance with BS 8102:2022. The manual notes that adequate drainage and water removal must be included within the design to remove water from behind the system, and that the Newton CDM System will not hold back water pressure. The structure itself must be capable of controlling the rate of water ingress so that the cavity drain system is not overwhelmed. This is especially important in basements, cellars, retaining walls, earth-retained structures and projects where high groundwater, surface flooding, burst mains or future climate-related water loads may be possible.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R is suitable for use on walls, floors and vaulted soffits within the Newton CDM system. For wall applications, suitable substrates include concrete, brick, concrete block and ICF, although ICF requires special longer fixing plugs. For soffit applications, the suitable backgrounds are concrete to a fall and arched or vaulted brick. For floor applications, Newton 508R is suitable over a concrete raft or slab, and it can also be used above \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Fibran XPS 500-C\u003c\/strong\u003e\u003c\/a\u003e closed cell extruded polystyrene insulation where the floor design includes the approved insulation spacer build-up.\u003c\/p\u003e\n\u003cp\u003eThe membrane is suitable for waterproofing earth-retained walls, vaulted soffits and floors. It is also independently tested as a barrier to radon ground gases and hydrocarbons, and is the selected membrane for Newton PAC-500 combined ground gas and waterproofing system applications. When radon or hydrocarbon barrier performance is required, all laps, joints, penetrations, fixings, edges, condensation gaps and interfaces must be treated as part of a complete gas-resisting system, not merely as a standard drainage membrane installation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAll timber and organic material should be removed before the Newton 508R membrane is installed. This includes skirting boards, timber plates, old wallpaper and any other material that may support fungal or bacterial growth behind the membrane. If there is evidence of rot, this should be dealt with by a specialist before installation. Any mould should be cleaned away and the area sterilised with a suitable fungicidal wash. Uneven or deteriorated wall areas should be made good so the membrane can be fixed securely and sit neatly against the substrate.\u003c\/p\u003e\n\u003cp\u003eFor floor applications, the floor must be cleared of oil, loose material and sharp protrusions. Holes, severe depressions and irregular areas should be filled or levelled before installation. The performance of the drainage system is directly affected by the gradient, flatness and regularity of the slab or raft, so the existing floor should be checked carefully before the membrane is installed. Newton recommends surface regularity of SR1 or better, meaning a maximum deviation of 3mm beneath a 2m straightedge, measured using a slip gauge. The floor may also be assessed by controlled flood testing or laser-level checks where appropriate.\u003c\/p\u003e\n\u003cp\u003eWhen installing Newton 508R to floors, the slab should be checked against the drainage datum point, which is the slab height where the drainage channel sits adjacent to the sump chamber. Deviation from this datum must not be more than -5mm at any point between the datum and the furthest point of the waterproofing system. Deviation may be up to +15mm only where it occurs at the furthest point from the datum, not at an intermediate high point that could trap water. Any irregularities should be corrected by planing, grinding or using a suitable levelling compound.\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with \u003cstrong\u003eNewton 106 Lime Inhibitor\u003c\/strong\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e to reduce the risk of free lime being drawn out of the curing concrete by incoming water. This is important because lime scale deposits can block drainage paths, drainage channels and membrane voids over time. Where drainage channels are used, water must be able to flow uninterrupted to the discharge point, as standing water can lead to silt or lime scale blockages.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-717.webp?v=1779713188\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\"\u003e\u003c\/p\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eAnti-lime sealer being applied to prepared concrete before installation of Newton 508R Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFor wall installation, the minimum required tools include a good quality 110V SDS hammer drill, mallet or club hammer, sharp knife with spare blades, tape measure, long spirit level, suitable SDS drill bits, clean rags, staging or scaffold for work at height, gloves and safety glasses. A \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/evolution-sds-drill-bit-10mm\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003e10mm SDS Drill Bit\u003c\/strong\u003e\u003c\/a\u003e is required where \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM MultiPlug\u003c\/strong\u003e\u003c\/a\u003e is used, while the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e requires an 11mm drilled hole. Recommended additional tools include extra lighting, a 110V hot air gun and a rotating laser level.\u003c\/p\u003e\n\u003cp\u003eNewton 508R installation commonly requires \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Rope\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM MultiPlug\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e and suitable drainage components such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e is a butyl tape used for jointing membranes along the flange. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e is a 10mm butyl rope used where a flange seal is not possible. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e is used for connecting floor membranes to \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e upstands, connecting floor membranes to wall membranes, sealing abutting joints, carrying out repairs and forming reveal details.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R must be installed with a drainage strategy that removes water from below and behind the membrane. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e is positioned at the wall-to-floor junction to collect water from behind the wall membrane and from the vulnerable wall-to-floor junction. It can interface with sump chambers, gullies and waste pipes, and it can be made maintainable through Newton inspection ports. Where existing floors do not allow sufficient headroom for \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e within a spacer of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Fibran XPS 500-C\u003c\/strong\u003e\u003c\/a\u003e insulation, \u003cstrong\u003eCDM BaseBoard\u003c\/strong\u003e may be considered as the drainage method.\u003c\/p\u003e\n\u003cp\u003eThe drainage route should be planned before the membrane is fitted. Water must be directed to a safe discharge point, normally a sump chamber with a correctly specified pumping system or a safe gravity drainage outlet where backflow cannot occur. Water must not be allowed to collect behind or beneath the membrane, as stagnant water can block the system with silt or lime scale and may pressurise areas that were intended to remain depressurised.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-911_1024x1024.webp?v=1779715087\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eNewton CDM Basedrain positioned at the wall-to-floor junction to collect water from behind the Newton CDM 508R Waterproof Membrane, with Newton CDM Overtape securing the channel to the Newton Condensation Strip and Newton CDM Fibran XPS 500-C Insulation beneath (via \u003c\/strong\u003e\u003c\/em\u003e\u003cem\u003e\u003cstrong\u003eNewton CDM 508R Waterproof Membrane as a floor membrane). \u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R may be fixed to walls either vertically or horizontally. Horizontal fixing generally requires fewer cuts and fewer joints, but the roll is heavy at the start of the installation. Vertical fixing creates lighter sheets that are easier to handle, but it requires more jointing because each sheet must be taped back together. The choice should be based on wall height, roll width, available access, number of corners, installer experience and the need to maintain clean, straight, sealed joints.\u003c\/p\u003e\n\u003cp\u003ePlace the membrane in position as level as possible. Drill through the centre of a stud near the top and edge of the membrane to a depth greater than the fixing. The fixing is then hammered into the pre-drilled hole until the plug sits flush in the stud. For wall applications, the rubber washer fitted to the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM MultiPlug\u003c\/strong\u003e\u003c\/a\u003e re-seals the hole. The sheet should then be levelled using a long spirit level or rotating laser level, with another fixing placed approximately 2m along the top edge so the membrane hangs level to the wall.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-220_1024x1024.webp?v=1779713172\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eFor horizontal wall fixing, continue fixing at approximately 2m intervals along the top line until the wall area is covered or the roll ends. The level should be checked regularly, as an out-of-level membrane can kink, look untidy and fall away incorrectly when taken around corners. For vertical wall fixing, each following sheet should be hung in the same way using initial top fixings. The next sheet should overlap by at least the width of the flange, or the first stud of the new sheet may be interlocked with the last stud of the previous sheet to help keep the installation straight and level.\u003c\/p\u003e\n\u003cp\u003eVertical joints are sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e. It is generally easier to apply the tape to the inner surface of the flange on the next sheet before the sheet is fully sealed into place. The flange and the face of the previous sheet must be cleaned with a clean rag before sealing. Once the sheet is fixed level with the correct overlap, remove the backing paper from the tape while applying pressure to the flange. After the backing paper has been removed, apply further pressure with the palm of the hand to seal the full joint. A hot air gun should be used to assist sealing, especially in cold or damp conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-542.webp?v=1779714126\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\"\u003e\u003c\/p\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eTypical wall and floor junction detail showing Newton 508R Waterproof Membrane installed as part of a cavity drain waterproofing system, with associated drainage, fixing, insulation and screed components.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe required fixing centres depend on the intended internal wall finish. Where timber battens are used, fixings should be at 600mm centres vertically and 400mm centres horizontally. Where a fixed metal track system such as Gypliner is used, fixings should be at 800mm centres vertically and 600mm centres horizontally. Brick or block walls restrained to the retaining wall using ties require fixing centres that provide the correct number and spacing of restraints. Free-standing timber frames, metal frames and free-standing block walls do not require specific fixing centres, but enough fixings should be used to hold the membrane neatly and reasonably tight to the wall, particularly at corners and reveals.\u003c\/p\u003e\n\u003cp\u003eIf battens are used, they should be pre-treated and at least 25mm x 38mm, although 25mm x 50mm can provide better support at plasterboard edges. Battens can be fixed into the CDM Fixing Plug without piercing the membrane by using size 10, 5mm self-tapping screws. The plug accepts up to 30mm of screw, so the screw length must be selected to suit the batten thickness. Over-tightening or using screws that are too long can loosen the plug or damage the membrane. Plasterboard should be fixed to the battens using suitable plasterboard fixings, making sure the fixing length does not exceed the batten depth and puncture the membrane.\u003c\/p\u003e\n\u003cp\u003eBecause Newton 508R is \u003cstrong\u003eNOT \u003c\/strong\u003ea meshed membrane, it should not be plastered or rendered directly in the way that a meshed membrane would be. Wall protection and finishing should normally be formed using a floor-supported dry-lining frame and plasterboard, or timber battens fixed into \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton MultiPlugs\u003c\/strong\u003e\u003c\/a\u003e to support plasterboard or timber sheeting. The chosen finish must protect the membrane from physical damage, UV exposure and fire exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-796_1024x1024.webp?v=1779713176\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eNewton MultiPlugs fixing Newton 508R to the wall, with fixing centres set to suit the internal finish, typically 600mm vertically and 400mm horizontally for timber battens.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore installing Newton 508R as a floor membrane, prepare and test the floor as described above. The floor should be clean, level and free from sharp projections, loose material and contaminants. Both edges of the membrane must be cleaned before a seal is made. The membrane is unrolled from one side of the room with the studs down and cut to fit the room in the same manner as a carpet.\u003c\/p\u003e\n\u003cp\u003eThe next width of membrane is rolled out so that the flanged edge overlaps onto the edge of the previous roll. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e is applied to the high flat area between the first two studs at the edge of the previous roll, with the backing paper left in place until alignment has been checked. The flange of the next sheet should cover the backing paper. Starting from the end of the joint, remove the backing paper and press down firmly to seal the two sections together. Continue this process until the floor area is fully covered.\u003c\/p\u003e\n\u003cp\u003eThe Newton 508R floor membrane should be sealed to the upstand of the \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eCDM BaseDrai\u003c\/a\u003en\u003c\/strong\u003e channel, or to the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Condensation Strip\u003c\/strong\u003e\u003c\/a\u003e if fitted, using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e. A heat gun should be used to dry the membrane surface and improve tape bonding where necessary. Where the floor membrane has to connect to horizontal DPCs such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDamp Proof Course (DPC)\u003c\/strong\u003e\u003c\/a\u003e through internal or external walls, seal these joints with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e, ensuring both surfaces are clean and dry before sealing.\u003c\/p\u003e\n\u003cp\u003eServices passing through the floor should be avoided wherever possible because they create weaknesses that may allow unnecessary water ingress. Where a service penetration is unavoidable, cut and trim the membrane around the service, then fill and seal the gap using the appropriate Newton adhesive or sealing products. Where required, a membrane patch or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDamp Proof Course (DPC)\u003c\/strong\u003e\u003c\/a\u003e patch can be laid over the area and sealed to the service with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e, then sealed around the perimeter with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e. \u003cstrong\u003eNewton Pipe Collar\u003c\/strong\u003e or \u003cstrong\u003eNewton Pipe Sleeve\u003c\/strong\u003e may also be used where suitable.\u003c\/p\u003e\n\u003cp\u003eOnce the floor membrane has been installed and checked, the specified floor finish can be laid directly over it, but the membrane must not be punctured by fixings through the floor. If a timber floor finish is being installed, an expansion gap must be left around the wall edge in accordance with the flooring supplier’s requirements. New concrete slabs or screeds can receive the membrane as soon as they are walkable, allowing fast-track floor finishing without waiting for normal relative humidity levels, because construction moisture is controlled within the air gap.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-722_1024x1024.webp?v=1779713168\" alt=\"Newton CDM 508R RADON Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R can be used for vaults and vaulted soffits. When applying it to vaulted construction, laps and joints must be detailed so water drains correctly and does not sit on joints. The rubber sealing washer supplied with CDM MultiPlug must not be used on vaulted ceilings or soffits. Instead, a seal must be formed using a ring of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e around the chosen fixing with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eFor vaulted cellars, measure the depth of the vault from the front wall to the back wall and allow a 200mm downturn at each end. Unroll the sheet and cut it to size. Mark the approximate centre of the arched ceiling, then measure down the arch by 1.2m and mark again. Strike a horizontal line along the wall from back to front to provide a guide line for the sheet edge. This helps keep the sheets square and symmetrical as they are fixed along the length of the vault.\u003c\/p\u003e\n\u003cp\u003eOffer the first section of Newton 508R to the ceiling, allowing a 200mm lap to the back wall. Using the guide line to keep the sheet square, drill and fix the sheet along the apex of the arch, following the same line of studs. Fix through the centre of the membrane studs at approximately 600mm centres, keeping the fixings aligned because they also provide the fixing points for battens. The next sheet is cut to size with 200mm laps at each end. Before positioning it, apply \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e to the edge of the previous sheet, either on the flanged edge or between the last two rows of studs on the non-flanged edge. Offer up the new sheet so the flange overlaps the sealing tape, then remove the protective paper from the middle outwards and form the seal. Continue the process until the arch and the vertical walls below the springer are covered.\u003c\/p\u003e\n\u003cp\u003eAt the end walls of a vaulted structure, a flat membrane end piece is fitted to the end wall. The 200mm lap from the soffit membrane is cut in fan sections to follow the curve of the arch and sit neatly against the wall. Each cut should be filled with a small piece of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e. The cuts should be kept to a minimum and should not be taken all the way up to the ceiling. The end wall membrane is cut to size, fixed in front of the fanned ceiling membrane and trimmed neatly into the curve. The membrane is then pulled back at the sides and around the arch so the studs on the reverse can be accessed, then \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e is used to form the stud-to-stud joint, following the contour of the arch.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat soffits require particular care. Newton 508R should not be applied to flat soffits unless the soffit is at least 400mm narrower than the membrane being used, and only very experienced contractors should attempt this type of installation.\u003c\/p\u003e\n\u003cp\u003eWhere flat soffits are considered, the soffit must have a fall in accordance with the drainage requirements, and the membrane must not sag in a way that allows ponding. Installations to flat soffits should follow the principles of inverted cavity drain systems in BS 8102:2022.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAt door openings within vaulted or membrane-lined areas, a section of membrane should be fitted around the door head and lapped down the sides by approximately 100mm. The wall membrane can then be wrapped around the sides while maintaining the correct drainage detail and forming an overlap. Any small gap created at the angle of the door opening should be sealed using\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003eCDM OverTape\u003c\/a\u003e\u003c\/strong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e.\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003eCorners, reveals, wall-to-floor junctions and penetrations are critical points in a Newton 508R installation. The membrane should be kept neat, tight and correctly drained, with the sealing detail chosen according to whether the joint is a flange joint, stud-to-stud joint, floor-to-wall junction, pipe penetration or repair. Surfaces being sealed must be clean and dry before tapes or ropes are applied. A hot air gun can be used to warm the membrane and tape where this improves adhesion, especially in cold or damp conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Newton 508R\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWhere pipes, steelwork or other protrusions pass through Newton 508R, the membrane must be cut neatly and sealed carefully. The technical drawing in the manual shows protrusions through Newton wall or floor membrane being sealed with\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003eCDM Rope\u003c\/a\u003e\u003c\/strong\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e. It also notes that the protrusion may need priming with a suitable primer such as \u003cstrong\u003eNewton 109-LM\u003c\/strong\u003e to ensure adhesion of the sealing product to the protrusion.\u003c\/p\u003e\n\u003cp\u003ePenetrations should be avoided wherever possible, especially through floor slabs or rafts, because they create weaknesses where water ingress can occur. Where they cannot be avoided, the seal must be detailed as part of the waterproofing and, where applicable, radon or hydrocarbon barrier specification. The completed detail should be inspected before finishes are installed, because later access may require removal of screeds, linings or finishes.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRadon Gas And Hydrocarbon Barrier Detailing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R is independently tested as a barrier to radon gas and hydrocarbons, but barrier performance depends on the complete installed system. The membrane itself, the joints and the detailing around penetrations must be continuous and properly sealed. The Technical Data Sheet gives radon gas resistance values for both the membrane and joints, and confirms that resistance to liquid hydrocarbons has passed the relevant testing.\u003c\/p\u003e\n\u003cp\u003eWhere the Newton CDM system is also being used as a gas barrier, the condensation gap may need to be sealed. The manual states that sealing the condensation gap is necessary in certain situations, including where the Newton waterproofing system is used as a gas barrier. If the condensation gap is sealed, the ventilation system must always work as designed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Newton 508R After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R must always be protected by suitable surface finishes. On walls and vaulted soffits, protection methods include a floor-supported dry-lining frame with plasterboard, or timber battens fixed into \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton MultiPlugs\u003c\/strong\u003e\u003c\/a\u003e to support plasterboard or timber sheeting. On floors, suitable protection methods include floating screeds, tongue and groove chipboard, timber floors supported by a fixed lattice of timber supports, insulation with screed or tongue and groove chipboard above, or underfloor heating trays with screed above.\u003c\/p\u003e\n\u003cp\u003eWhere screeds are placed above non-bonded HDPE membranes such as Newton 508R, they are classed as floating screeds under BS8204 and BS13318. Sand and cement floating screeds should be at least 65mm thick, while proprietary liquid screeds typically require 35-40mm, subject to checking the load capability with the screed supplier. Newton 508R has a long-term compressive loading of 7kPa as membrane only, and 800kPa where the load is transferred through a C16 floating screed. Filling the studs with sand may appear to increase load distribution, but Newton notes that this has not been tested.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFire Protection\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R is classified as Euroclass F for reaction to fire, the same classification noted for plastic-based insulation. It must therefore be protected from fire by suitable surface finishes, just as insulation would be.\u003c\/p\u003e\n\u003cp\u003eWhere a project requires a higher fire-rated membrane, Newton states that fire-resistant membranes tested and classified to B-s2.d0 can be supplied, but this is a different specification consideration and should not be assumed for Newton 508R itself.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWhen correctly incorporated into a complete Type C system, including suitable drainage, pumping, ventilation and humidity control where required, Newton 508R can contribute to achieving a Grade 3 internal environment in accordance with BS 8102:2022. However, the internal environment must still be designed correctly. Where the membrane and drainage system are installed behind internal linings, condensation and humidity must be considered, especially in habitable basement conversions, storage rooms and occupied below ground areas.\u003c\/p\u003e\n\u003cp\u003eIf the condensation gap is left open, it can assist the intended cavity drainage arrangement. If the condensation gap is sealed for gas barrier purposes, ventilation and humidity control become more important because trapped moisture must still be managed safely. Where gas protection, waterproofing and internal environmental control are all required, the specification should be designed as a complete system rather than as a simple membrane installation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore any screed, dry lining, boarding or other finishes are installed, the entire Newton 508R installation should be checked carefully. All joints, laps, tapes, penetrations, fixings, corners and floor-to-wall interfaces should be inspected.\u003c\/p\u003e\n\u003cp\u003eAny damaged areas must be repaired before finishes are applied, and all joints and seals should be checked to confirm they are adequate. This is essential because access becomes much more difficult once floors, battens, plasterboard, screeds or other finishes are in place.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Newton 508R\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf the wrong stud is drilled during wall installation, the error can be repaired by cleaning out the stud with a clean cloth, plugging it with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Rope\u003c\/strong\u003e\u003c\/a\u003e and covering it with a small patch of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e.\u003c\/a\u003e The same repair method can be used where a fixing has not been achieved due to drilling into an unsound joint or substrate, and where the CDM Fixing Plug expansion pin has not corrected the problem. A new fixing should then be formed in another stud.\u003c\/p\u003e\n\u003cp\u003eClean cuts, accidental piercings, rips and tears in the membrane should be sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e. For a clean cut, the tape should bridge both edges and extend at least 25mm beyond the furthest points of the cut. For a hole, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e can be used provided the hole can be bridged in one piece with at least a 25mm margin around the damaged area. Larger damage can be repaired with a patch of membrane that extends beyond the hole, sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e if the patch sits neatly into the studs, or sealed around the perimeter with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e if the studs do not interlock.\u003c\/p\u003e\n\u003cp\u003eFor floors and vaulted ceilings, damage can be repaired using the same general methods, but \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e must always be used to bridge or seal the damage. All surfaces must be clean and dry before the repair is made. In some cases, warming the membrane and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM OverTape\u003c\/strong\u003e\u003c\/a\u003e with a hot air gun can help remove surface moisture and improve the seal. Where multiple areas of damage are present in one membrane section, it may be better to cut out and replace that section with a larger piece of membrane.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe Newton CDM system requires very little maintenance, but the drainage and pumping elements must remain serviceable. Mechanical pumps and drainage systems should be inspected at least once a year by a competent person. Maintenance should include cleaning and descaling the pumping system as required, checking the free movement of the pump impeller, checking pump seals, carrying out an impeller test, inspecting discharge pipes for damage and leaks, removing debris from the sump base, checking electrical connections and fuses, and flushing through the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eCDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e drainage system.\u003c\/p\u003e\n\u003cp\u003eSump pumps rely on electricity, so a constant power supply is important for maximum drainage capacity. Battery backup systems may be required where pump continuity is critical. The membrane itself should not be pierced after installation. If future works are planned in the basement or waterproofed area, including shelving, cupboards, dry lining alterations or other fixings, advice should be obtained from the specialist installing contractor before work begins. Even minor penetrations can compromise the waterproofing and gas barrier performance if they are not detailed correctly.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R must not be used as an isolated waterproof barrier or a product expected to resist hydrostatic pressure on its own. It must be installed as part of a Type C cavity drain waterproofing system with designed drainage and water removal. The membrane should not be installed where water can build up behind or below it without a safe path to discharge.\u003c\/p\u003e\n\u003cp\u003eDo not install Newton 508R to flat soffits unless the soffit is at least 400mm narrower than the membrane being used, and only very experienced contractors should carry out that work. Do not allow the membrane to sag on soffits, because ponding can occur. Do not puncture the floor membrane with fixings through the floor finish. Do not use Newton 508R without protecting it from fire, UV exposure, physical damage and wear. Do not assume gas barrier performance unless all joints, laps, gaps, penetrations and interfaces are detailed as part of a complete gas barrier system.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton 508R is supplied with a 30-year product warranty. When specified, installed and protected in accordance with the current Newton technical information, fully isolated from UV light, physical damage and wear, and used only on confirmed suitable substrates, it has a service life equal to the design life of the structure. The product warranty is separate from any waterproofing guarantee, which is normally provided by the specialist waterproofing contractor.\u003c\/p\u003e\n\u003cp\u003eThe membrane has a temporary compressive strength of 280kPa, a permanent compressive strength of 7kPa, and a permanent load transfer value of 800kPa through a C16 screed. It has a water vapour resistance Sd value greater than 604m, a μ value greater than 1208000μ and water vapour diffusion resistance greater than 3020MNs\/g. It also has excellent chemical resistance and oxidation resistance, and has tested radon gas resistance values for both membrane and joints. These performance values support its use in demanding basement waterproofing, radon gas barrier, hydrocarbon barrier and below ground Type C waterproofing specifications, provided the complete system is correctly designed and installed.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Newton 508R Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R Waterproof Membrane is a premium 8mm studded cavity drain membrane designed for use within the Newton CDM Type C waterproofing system. It is used internally on walls, floors and vaulted soffits to manage water ingress rather than simply trying to block it at the surface. The studded profile creates a drainage cavity behind the membrane, allowing water to be directed safely towards channels, sumps or gravity drainage. Newton 508R is heavier and stronger than standard 8mm membranes, making it suitable for demanding below ground work. It is also independently tested as a radon gas barrier and hydrocarbon barrier, giving it wider use in contaminated or gas-affected sites.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How does Newton 508R Waterproof Membrane work?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R Waterproof Membrane works by creating a controlled cavity between the structure and the internal finish. Water entering through an earth-retained wall, floor or vaulted soffit is allowed to move behind or beneath the membrane and is then directed to a designed drainage route. This is the principle of Type C waterproofing under BS 8102:2022. Instead of relying on a bonded coating to resist all water pressure, Newton 508R manages water safely within the system. For this reason, it must be used with appropriate drainage, such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e, and where needed a sump and pump system. The membrane itself does not hold back hydrostatic pressure on its own.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What is Newton 508R used for?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R is used for basement waterproofing, cellar conversions, below ground refurbishment, floor waterproofing, earth-retained walls, vaulted soffits and ground gas protection. It is particularly suited to Type C cavity drain waterproofing systems where water needs to be collected and removed in a controlled way. The membrane can also be specified where radon gas resistance or hydrocarbon barrier performance is needed, provided the complete system is correctly jointed and sealed. Typical projects include domestic basements, commercial below ground spaces, retaining structures, arches, tunnels, contaminated ground sites and waterproof floor build-ups. Its combination of strength, compressive stability and chemical resistance makes it a robust option for demanding internal waterproofing specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton 508R suitable for basement waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R is highly suitable for basement waterproofing when it is installed as part of a correctly designed Newton CDM Type C waterproofing system. Basements and cellars are commonly affected by lateral moisture, water pressure, salts and damp substrates, so a maintainable cavity drain system is often more practical than relying only on bonded tanking. Newton 508R creates a drainage space that manages water behind internal finishes and directs it towards a suitable drainage outlet. When designed with the correct drainage channel, sump, pump and humidity control measures, it can contribute to internal environments capable of meeting Grade 3 requirements under BS 8102:2022. Professional design and installation are essential for reliable performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton 508R Waterproof Membrane be used on walls and floors?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R Waterproof Membrane can be used on walls and floors within the Newton CDM system. On earth-retained walls, it is mechanically fixed to the substrate and directs water downwards into the drainage channel. On floors, it is laid with the studs down over a prepared slab or raft and jointed using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e. The floor membrane is then connected to \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e or other appropriate drainage details using\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/strong\u003e. Floor preparation is especially important because the slab must be level, clean and free from sharp projections. Where floor finishes are installed above Newton 508R, fixings must not puncture the membrane.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton 508R suitable for vaulted soffits and arched structures?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R is suitable for vaulted soffits, arches and similar below ground structures, but the detailing must be carried out carefully by experienced installers. Vaulted installations need the laps and joints arranged so water drains correctly and does not sit on the joint lines. The normal rubber washer arrangement used with Newton CDM MultiPlug is not used on vaulted soffits. Instead, a seal is formed using\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Rope\u003c\/a\u003e\u003c\/strong\u003e around the fixing with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e. The membrane is fixed along the curve of the arch, with joints sealed using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e and reinforced where needed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton 508R be used on flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R should only be used on flat soffits in very limited circumstances and only by highly experienced contractors. The soffit must be at least 400mm narrower than the membrane being used, and it must have a suitable fall so water can drain correctly. The membrane must not sag, as this can allow ponding and create a failure risk within an inverted cavity drain arrangement. Flat soffit installations should follow the principles of inverted cavity drain systems in BS 8102:2022. In practice, this is a specialist application requiring careful assessment of the structure, drainage route, fixing method and long-term maintainability. It should never be treated as a routine installation detail.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton 508R a radon gas barrier?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R is independently tested as a radon gas barrier, with stated radon gas resistance values for both the membrane and joints. This makes it suitable for projects where radon protection and waterproofing need to be addressed together. However, radon barrier performance depends on the complete installed system, not just the membrane sheet. All laps, joints, penetrations, fixings, condensation gaps, edges and interfaces must be properly sealed and detailed. If the Newton CDM system is being used as a gas barrier, the condensation gap may need to be sealed, and ventilation must then work as designed. For radon-affected sites, installation should follow a full gas-resisting specification.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton 508R suitable for hydrocarbon contaminated sites?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R has been independently tested for resistance to liquid hydrocarbons to EN 16140:2011, making it suitable for certain contaminated ground applications where hydrocarbon barrier performance is required. It is also the selected membrane for use within the patented Newton PAC-500 combined ground gas and waterproofing system. This makes Newton 508R particularly relevant on sites where waterproofing, radon protection and hydrocarbon resistance may need to work together. As with radon protection, hydrocarbon barrier performance depends on the full system being correctly designed and sealed. Joints, service penetrations, edges and interfaces must be treated as part of the barrier system, not as ordinary membrane overlaps.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What makes Newton 508R stronger than a standard 8mm membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R is heavier and stronger than standard 8mm cavity drain membranes, giving it improved robustness for demanding below ground applications. Its physical strength is particularly valuable on floors, where long-term loading may come from screeds, insulation, internal partitions, finishes and normal use of the building. Third-party testing to ISO 25619-1 shows just 2% compression over 50 years, which supports confidence in its long-term dimensional stability. It also has a permanent load transfer value of 800kPa through a C16 screed, demonstrating the importance of the correct floor build-up. This makes Newton 508R a strong choice where a more robust cavity drain membrane is needed for loaded applications.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What certifications does Newton 508R Waterproof Membrane have?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R Waterproof Membrane is supported by BBA Certification Number 94\/3010, which provides independent assessment of its suitability and performance under defined use conditions. It is used as part of a Type C waterproofing system relevant to BS 8102:2022 and has third-party testing for long-term compressive load performance to ISO 25619-1. It also has water vapour resistance testing to BS EN 1931, thermal conductivity testing to EN 12667, chemical resistance testing to EN 14030 and oxidation resistance testing to EN ISO 13438. Radon gas resistance testing confirms its suitability as a radon barrier when correctly jointed, and EN 16140:2011 testing supports its use as a liquid hydrocarbon barrier in appropriate contaminated ground specifications.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton 508R help achieve a Grade 3 basement environment?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R can contribute to achieving a Grade 3 internal environment in accordance with BS 8102:2022, but only when used as part of a correctly designed waterproofing system. A Grade 3 environment is typically required where the internal space must be suitable for habitable use, storage of sensitive items or high-quality commercial use. The membrane helps manage water and vapour, but drainage, sump and pump design, ventilation, humidity control and internal finishes all matter. Newton 508R should not be viewed as a standalone solution. The full Newton CDM system must be specified to suit the structure, water risk and intended use of the space.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What substrates can Newton 508R be installed onto?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R can be installed onto suitable walls, floors and vaulted soffits within the Newton CDM system. For wall applications, typical substrates include concrete, brick, concrete block and ICF, although ICF requires special longer fixing plugs. For soffits, suitable backgrounds include concrete formed to a fall and arched or vaulted brick. For floor applications, Newton 508R is used over a concrete slab or raft, and it can also be used above \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Fibran XPS 500-C\u003c\/strong\u003e\u003c\/a\u003e closed cell extruded polystyrene insulation where the approved floor build-up is used. The substrate must be stable, suitably prepared and capable of supporting the membrane and drainage system without compromising performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How should walls be prepared before installing Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Before installing Newton 508R to walls, all timber and organic material should be removed, including skirting boards, timber plates, wallpaper and anything that could support fungal or bacterial growth behind the membrane. Any rot should be assessed and treated by a specialist before installation begins. Mould should be cleaned away and the area sterilised with a suitable fungicidal wash. Loose, uneven or deteriorated wall areas should be made good so the membrane can be fixed securely and sit neatly against the substrate. The aim is not to create a perfectly smooth tanking surface, but the wall must be sound enough to accept fixings and support a clean, reliable cavity drain installation.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How should floors be prepared before Newton 508R is installed?\u003c\/h3\u003e\n\u003cp\u003eA) Floors should be clean, level and free from oil, loose material, sharp projections and severe depressions before Newton 508R is installed. Holes and irregular areas should be filled or levelled so the membrane sits properly and drainage is not compromised. Newton recommends surface regularity of SR1 or better, meaning a maximum deviation of 3mm beneath a 2m straightedge, measured using a slip gauge. The floor may also be assessed by controlled flood testing or laser-level checks where appropriate. New concrete should be treated with \u003cstrong\u003eNewton 106 Lime Inhibitor\u003c\/strong\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e to reduce the risk of free lime deposits blocking drainage paths as water passes through the system.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What drainage products are normally used with Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R is normally used with a planned drainage system that may include \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e, inspection ports, sump chambers and pump systems.\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain\u003c\/a\u003e\u003c\/strong\u003e is commonly positioned at the wall-to-floor junction to collect water from behind wall membranes and from vulnerable wall-floor junctions. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e may be used where floor drainage is required. The key point is that water must be directed to a safe discharge point and must not be allowed to stagnate behind or beneath the membrane. If water sits within the system, silt and lime scale can accumulate and restrict drainage. Correct drainage design is therefore central to Newton 508R performance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How is Newton 508R fixed to walls?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R can be fixed to walls either vertically or horizontally, depending on access, wall height, corner details and installer preference. Horizontal fixing often reduces cuts and joints, while vertical fixing creates lighter sheets but requires more jointing. The membrane is placed level against the wall, then drilled through the centre of a stud using the correct drill size for the chosen fixing. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM MultiPlug\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e is then installed so the fixing sits correctly in the stud. For standard wall applications, the rubber washer on the fixing helps reseal the drilled hole. Fixing centres depend on the intended internal finish, such as battens, metal framing or free-standing linings.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What tapes and ancillary products are used with Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R installation commonly uses \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Rope\u003c\/strong\u003e\u003c\/a\u003e,\u003cstrong\u003e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/strong\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM MultiPlug\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-nu-seal-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM NuSeal Plug\u003c\/strong\u003e\u003c\/a\u003e. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e is a butyl tape used for jointing membranes along the flange. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Rope\u003c\/strong\u003e\u003c\/a\u003e is used where a flange seal is not possible or where stud-to-stud detailing is needed. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e is used for floor-to-wall connections, floor membrane to \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e upstands, repairs, reveal details and abutting joints. These products are not optional finishing accessories. They form part of the waterproofing and, where relevant, gas barrier detailing, so surfaces must be clean and dry before tapes and ropes are applied.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton 508R be plastered or rendered directly?\u003c\/h3\u003e\n\u003cp\u003eA) No, Newton 508R is not a meshed membrane and should not be plastered or rendered directly. It should be protected with suitable internal finishes, such as a floor-supported dry-lining frame with plasterboard, or timber battens fixed into \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multi-plugs\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM MultiPlugs\u003c\/strong\u003e\u003c\/a\u003e to support plasterboard or timber sheeting. The finish must protect the membrane from physical damage, UV exposure and fire exposure. If battens are used, they should be pre-treated and correctly fixed without piercing the membrane outside the intended fixing points. Plasterboard fixings must be chosen carefully so they do not pass through the batten and puncture the membrane. Correct finishing is essential to protect the system.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What floor finishes can be installed over Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R can be protected with suitable floor finishes including floating screeds, tongue and groove chipboard, timber flooring supported by a fixed lattice of timber supports, insulation with screed or chipboard above, or underfloor heating trays with screed above. Where screeds are placed above non-bonded HDPE membranes such as Newton 508R, they are classed as floating screeds under BS8204 and BS13318. Sand and cement floating screeds should generally be at least 65mm thick, while proprietary liquid screeds may require 35mm to 40mm depending on supplier guidance. Floor finishes must not puncture the membrane. If fixings are needed, the detail should be checked with the specialist installer before work proceeds.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How are pipes and penetrations sealed through Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Pipes and penetrations through Newton 508R should be avoided wherever possible, especially through floors, because they create weaknesses in the waterproofing and gas barrier system. Where a penetration is unavoidable, the membrane must be cut neatly and sealed carefully. The detail may require \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Rope\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e, membrane patches, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eDamp Proof Course (DPC)\u003c\/strong\u003e\u003c\/a\u003e patches, Newton Pipe Collar or Newton Pipe Sleeve, depending on the situation. If a protrusion needs priming, \u003cstrong\u003eNewton 109-LM\u003c\/strong\u003e may be required to support adhesion of the sealing products. Every penetration should be inspected before finishes are installed, because later access may require disruptive removal of screeds, linings or boards.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton 508R need protecting from fire?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R must be protected from fire by suitable surface finishes. Its reaction to fire classification is Euroclass F, meaning no declared fire performance should be assumed. This is similar to the classification often noted for plastic-based insulation products, which also require protection within the building build-up. In practice, Newton 508R should be covered by appropriate wall, floor or soffit finishes, such as plasterboard systems, screeds or other specified protective layers, depending on the design. If a project requires a higher fire-rated membrane, that must be specified separately. Newton 508R itself should never be left exposed or assumed to provide fire resistance.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) How long does Newton 508R Waterproof Membrane last?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R is guaranteed against deterioration for 30 years and has a stated life expectancy equal to the design life of the building when installed correctly. However, the product warranty is not the same as a waterproofing guarantee. The waterproofing guarantee is normally provided by the specialist waterproofing contractor and depends on the full system design, installation quality, drainage, pumping, protection and maintenance. Newton 508R is a highly durable membrane, but the performance of the waterproofing system relies on correct design and workmanship.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What maintenance is needed with Newton 508R?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R itself requires very little direct maintenance once protected behind finishes, but the drainage and pumping system must remain serviceable. Mechanical pumps and drainage channels should be inspected at least once a year by a competent person. Maintenance should include cleaning and descaling the pumping system, checking pump seals, testing impellers, inspecting discharge pipes, removing debris from the sump base, checking electrical connections and flushing \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM BaseDrain\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM FloorDrain\u003c\/strong\u003e\u003c\/a\u003e where required. If the system depends on pumps, a reliable power supply is essential, and battery backup may be needed where pump continuity is critical. Future alterations should not puncture the membrane without specialist advice.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Can damaged Newton 508R be repaired?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton 508R can be repaired, but repairs must be carried out using the correct Newton CDM products and detailing method. If the wrong stud is drilled, the stud can be cleaned, plugged with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-rope\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Rope\u003c\/strong\u003e\u003c\/a\u003e and covered with a small patch of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e. Clean cuts, piercings, rips and tears can usually be sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e, provided the tape bridges the damage with an adequate margin. Larger areas may require a patch of Newton 508R sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-waterseal-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Joint Tape\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-overtape-corner-tape\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM OverTape\u003c\/strong\u003e\u003c\/a\u003e, depending on how the studs align. All surfaces must be clean and dry before repair, and the repair should be inspected before finishes are installed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Newton 508R Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) The main limitation of Newton 508R is that it must not be used as a standalone waterproof barrier expected to resist hydrostatic pressure by itself. It must be installed as part of a designed Type C cavity drain system with suitable drainage and safe water discharge. It should not be used where water can collect behind or beneath it without a clear route away. It should not be punctured after installation, left exposed to fire, UV, wear or physical damage, or used as a gas barrier unless all laps, joints, penetrations and interfaces are sealed as part of a complete gas-resisting system. Flat soffit use is also restricted and should only be undertaken by experienced contractors.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003eQ) Why choose Newton 508R Waterproof Membrane over a standard cavity drain membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton 508R Waterproof Membrane is a strong choice where a more robust 8mm cavity drain membrane is required for demanding below ground waterproofing, loaded floors, vaulted soffits, earth-retained walls or ground gas protection. Compared with standard 8mm membranes, it is heavier and stronger, with excellent long-term compressive stability and strong resistance to chemical and biological attack. It is also independently tested as both a radon gas barrier and hydrocarbon barrier, giving it additional value on contaminated or gas-affected sites. Supported by BBA Certification Number 94\/3010 and a 30-year guarantee against deterioration, Newton 508R offers a high level of confidence when used within a properly designed Newton CDM system.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH.pdf?v=1779708789\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH.pdf?v=1779708789\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH_e7019bce-9895-42ab-9245-1c6deb16a031_160x160.jpg?v=1779708766\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_4436e4d8-2bd0-4917-9d4c-2fef110d4b56.pdf?v=1782477479\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_e3b98bd6-c93b-4c4f-9d55-6ae56323779d_160x160.jpg?v=1779708766\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_TECH.pdf?v=1779708789\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_DOP.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_DOP.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_DEC_OF_PERFORMANCE_160x160.jpg?v=1613707156\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_BBA_22141a21-46ea-4894-bbb2-0096c9f323e8.pdf?v=1787054062\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_BBA_22141a21-46ea-4894-bbb2-0096c9f323e8.pdf?v=1787054062\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508R_BBA_2_160x160.jpg?v=1787054041\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":8159298191459,"sku":"NM2R","price":199.0,"currency_code":"GBP","in_stock":false},{"title":"(W) 2.47M x (L) 20M (48M²)","offer_id":8159307366499,"sku":"NM1R","price":210.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-w-2-07m-x-l-20m-40m-basement-membranes-412.webp?v=1780916547"},{"product_id":"newton-cdm-508-membrane-8mm-cavity-drain-waterproofing","title":"Newton CDM 508 - Cavity Drain Waterproof Membrane (8mm Stud)","description":"\u003cp\u003eNewton CDM 508 Membrane (Newton product reference M1), is an 8mm studded cavity drain waterproofing membrane used within the Newton CDM System for below-ground waterproofing applications. It is designed for use on earth-retained walls, floors, vaulted soffits, tunnels and similar structures where a Type C drained protection system is required.\u003c\/p\u003e\n\u003cp\u003eSupplied in \u003cstrong\u003e500g\/m²\u003c\/strong\u003e and \u003cstrong\u003e700g\/m²\u003c\/strong\u003e variants, Newton CDM 508 provides a durable drainage cavity behind the internal finish, allowing water ingress to be controlled and directed to a suitable drainage and pumping system. The 700g\/m² variant is recommended for floor applications where increased resistance and durability are required.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 is \u003cstrong\u003eBBA certified\u003c\/strong\u003e, rot-proof, chemically resistant, non-polluting to drinking water and guaranteed against deterioration for 30 years, with a stated life expectancy equivalent to the design life of the building.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features of Newton \u003cspan\u003eCDM \u003c\/span\u003e508 Membrane\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ 8mm studded cavity drain membrane manages water ingress behind finishes within Newton CDM waterproofing systems.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for earth-retained walls, floors, vaulted soffits, tunnels and basements requiring Type C drained protection.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Available in 500g\/m² and 700g\/m² variants, with 700g\/m² recommended for more demanding floor applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Rot-proof, chemically resistant and non-polluting to drinking water for long-term below-ground durability.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified with 30-year deterioration guarantee and building life expectancy when correctly installed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e8mm Cavity Drain Membrane For Basement Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 Membrane is a high quality 8mm studded cavity drain membrane designed for use as part of the Newton CDM System, Newton’s internally applied waterproofing system for basements, cellars and below-ground structures. Rather than relying on a barrier method that attempts to block water directly at the face of the wall, the cavity drain membrane approach accepts that moisture may be present behind the membrane and manages it safely. The 8mm studded profile forms a controlled drainage cavity between the membrane and the substrate, allowing water to move behind the membrane and be directed towards a suitable drainage channel, sump and pump arrangement where required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eReliable Waterproofing For Walls, Floors, Vaults And Tunnels\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 is suitable for waterproofing earth-retained walls, vaulted soffits, floors, vaults and tunnels as part of a correctly designed below-ground waterproofing system. Its cavity forming profile makes it a practical choice for structural waterproofing projects where retaining walls, floor slabs and vaulted areas are exposed to ground moisture, dampness or water ingress. The membrane helps manage water behind the internal finish while allowing the structure to remain protected as part of a drained system. This makes Newton CDM 508 particularly well suited to basement conversions, cellar refurbishments, waterproofing upgrades and below-ground environments where dependable moisture management is essential for long-term performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e500g\/m² And 700g\/m² Grades For Project-Specific Requirements\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 Membrane is supplied in two weight variants, 500g\/m² and 700g\/m², allowing the correct grade to be selected for the demands of the project. The 500g\/m² version is suitable for many wall and vault applications where the membrane is used vertically or overhead as part of the Newton CDM System. The 700g\/m² version is recommended for floors, where the membrane may be exposed to greater loading, foot traffic during installation or increased service demands before the final floor build-up is completed. Correct detailing, jointing, drainage, fixing and protection remain essential to the performance of any cavity drain membrane system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable, Inert And Rot-Proof Membrane Performance\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eNewton CDM 508 is manufactured from an inert, rot-proof material that is resistant to water, alkalis, saline solutions and organic acids. It is not affected by minerals or hydrocarbons and is also resistant to bacteria, fungi and small organisms, making it highly suitable for long-term use in damp and below-ground environments. These properties help protect the membrane from the types of biological and chemical degradation that can affect traditional building materials in challenging ground-contact conditions. The membrane is also non-polluting to drinking water, reflecting its inert nature and suitability for demanding construction environments where durability, stability and long-term waterproofing performance are important considerations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned To Support Grade 3 Habitable Below-Ground Spaces\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eOne of the main practical advantages of Newton CDM 508 is that it does not require the same level of extensive, potentially damaging surface preparation as some directly bonded or cementitious waterproofing systems. As part of a drained cavity system, uneven or contaminated substrates can often be managed without aggressive hacking back, scabbling or surface removal, provided the background remains suitable for secure fixing and correct system detailing. This can help reduce disruption and support efficient progress during basement conversions, refurbishment works and waterproofing upgrades. When correctly designed as part of the Newton CDM System, including suitable drainage and pumping where necessary, Newton CDM 508 can contribute to internal environments up to Grade 3 under BS 8102:2022, the grade generally required for habitable below-ground spaces.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-220_1024x1024.webp?v=1779713172\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8mm Cavity Drain Profile:\u003c\/strong\u003e The 8mm studded structure creates a drainage cavity behind the internal finish, allowing water to move behind the membrane and be directed towards drainage outlets, channels or sump systems rather than building pressure against the finished wall surface.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable For Below-Ground Waterproofing: \u003c\/strong\u003eNewton CDM 508 is designed for use on earth-retained walls, floors, vaults, tunnels and vaulted soffits, making it a versatile membrane for basement waterproofing, cellar conversions and structural waterproofing projects.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAvailable In 500g\/m² And 700g\/m² Variants: \u003c\/strong\u003eThe two membrane weights allow the correct version to be selected for the application, with the 700g\/m² variant recommended for floor areas where greater robustness is required during and after installation.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePart Of The Newton CDM System: \u003c\/strong\u003eThe membrane is used within Newton’s internally applied waterproofing system, working alongside drainage channels, outlets, sump chambers, pumps, tapes, fixings and sealing accessories to manage water ingress in a controlled way.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Surface Preparation Requirements: \u003c\/strong\u003eBecause the membrane is mechanically fixed and used as part of a drained system, it does not normally require the same level of aggressive substrate preparation as many direct-applied waterproofing methods.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResistant To Rot And Biological Attack: \u003c\/strong\u003eNewton CDM 508 is rot-proof and resistant to bacteria, fungi and small organisms, helping it remain stable in damp, concealed and below-ground conditions where biological degradation can affect other materials.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eChemical And Moisture Resistance: \u003c\/strong\u003eThe membrane is highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons, supporting long-term use in demanding below-ground environments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong-Term Durability: \u003c\/strong\u003eNewton CDM 508 is guaranteed against deterioration for 30 years and has a stated life expectancy equal to the design life of the building, provided it is installed correctly as part of the appropriate Newton CDM System.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupports Habitable Basement Environments:\u003c\/strong\u003e When correctly specified, installed and combined with suitable drainage and pumping, Newton CDM 508 can contribute to a Grade 3 internal environment under BS 8102:2022, suitable for dry habitable spaces.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certified Waterproofing Membrane: \u003c\/strong\u003eSupported by BBA Agrément Certificate 22\/6357, the membrane has independent certification for use within defined waterproofing applications, giving specifiers and installers clear supporting product approval.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing Systems: \u003c\/strong\u003eNewton CDM 508 is widely used as part of Type C drained protection systems for basements, helping manage water ingress behind internal finishes and direct it towards controlled drainage.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions: \u003c\/strong\u003eSuitable for converting damp or unused cellars into dry internal spaces when used as part of a complete Newton CDM System with correct drainage, ventilation, finishes and pumping arrangements where required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Walls: \u003c\/strong\u003eThe membrane can be fixed to retaining walls below ground level, creating a cavity that helps manage moisture and protect the internal wall build-up from direct contact with damp masonry.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFloor Waterproofing Applications: \u003c\/strong\u003eThe 700g\/m² variant is recommended for floors, where the membrane needs to withstand the demands of installation, overlaying screeds or finishes and the expected service conditions of the floor build-up.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Soffits And Arched Structures:\u003c\/strong\u003e Newton CDM 508 can be used on vaulted soffits, arches and curved below-ground structures where a flexible internal cavity drain membrane is required to manage moisture.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTunnels And Below-Ground Passages:\u003c\/strong\u003e Suitable for tunnel and passageway waterproofing where a drained membrane system is required to control water ingress and maintain a protected internal environment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefurbishment Of Damp Structures: \u003c\/strong\u003eUseful in older properties where walls may be damp, uneven or salt contaminated, and where a cavity drain membrane system offers a practical alternative to direct-applied waterproofing materials.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNew Build Waterproofing: \u003c\/strong\u003eCan be incorporated into new below-ground waterproofing designs as part of a Type C drained protection approach, often used alongside other waterproofing measures depending on the project specification.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial And Domestic Projects: \u003c\/strong\u003eSuitable for both residential and commercial below-ground spaces, including habitable basements, storage areas, plant rooms, corridors and ancillary rooms where controlled moisture management is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 Internal Environments: \u003c\/strong\u003eWhen correctly designed and installed within the full Newton CDM System, Newton CDM 508 can help achieve the dry internal conditions required for Grade 3 environments under BS 8102:2022.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Agrément Certificate 22\/6357: \u003c\/strong\u003eNewton CDM 508 is supported by BBA Agrément Certificate 22\/6357, which provides independent assessment of the product for defined waterproofing applications. BBA certification is important for specifiers, contractors and building professionals because it confirms the product has been reviewed against recognised performance and durability criteria.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Grade 3 Environment:\u003c\/strong\u003e Newton CDM 508 is capable of contributing to an environment up to Grade 3 under BS 8102:2022 when used as part of a correctly designed and installed Newton CDM System. Grade 3 is generally associated with habitable below-ground spaces where no dampness is acceptable and where ventilation, drainage and internal finishes must be properly considered.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e30-Year Guarantee Against Deterioration:\u003c\/strong\u003e Newton CDM 508 is guaranteed against deterioration for 30 years, giving confidence in the membrane’s long-term stability when installed in accordance with the correct system guidance and project waterproofing specification.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Life Of The Building: \u003c\/strong\u003eThe membrane has a stated life expectancy equal to the design life of the building, referenced against DIN 9001:2000 within the supplied information. This indicates that the membrane is intended as a long-term waterproofing component rather than a short-term remedial barrier.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNon-Polluting To Drinking Water:\u003c\/strong\u003e Newton CDM 508 is inert and non-polluting to drinking water, indicating that the material does not release harmful contamination into water. This supports its suitability for use in construction environments where inert, stable and non-polluting materials are required.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 performs as an 8mm cavity drain membrane by separating the internal finish from the damp or water-bearing structure and creating a controlled drainage space behind the membrane. This is one of the main reasons cavity drain membrane systems are widely used in basement waterproofing. Rather than relying solely on blocking water at the wall face, the membrane allows moisture to enter the cavity and move safely to a drainage system. This approach is particularly useful in below-ground structures, where hydrostatic pressure, seasonal water levels and ground conditions can vary over time.\u003c\/p\u003e\n\u003cp\u003eThe two available membrane weights provide useful specification flexibility. The 500g\/m² variant is suitable for many wall and vaulted applications, while the 700g\/m² variant is recommended for floors where additional robustness is beneficial. Floor membranes can be exposed to greater installation pressures, foot traffic, screeds, insulation layers and finished floor build-ups, so the heavier variant provides a more suitable option for these more demanding areas.\u003c\/p\u003e\n\u003cp\u003eThe material performance is also important. Newton CDM 508 is resistant to water, alkalis, saline solutions, organic acids, minerals and hydrocarbons, while also being rot-proof and resistant to bacteria, fungi and small organisms. This means the membrane is well suited to concealed, damp and below-ground environments where long-term exposure to moisture and contaminants is likely. Its inert and non-polluting nature also helps ensure the membrane remains stable once installed, without contributing to decay, staining or contamination.\u003c\/p\u003e\n\u003cp\u003eFor the user, the main benefit is reliable moisture management within a properly designed system. When combined with suitable Newton drainage channels, sump and pump systems, sealing tapes, fixing plugs and installation detailing, Newton CDM 508 helps create dry internal conditions suitable for high-quality finishes. Its ability to contribute to Grade 3 environments under BS 8102:2022 makes it suitable for habitable basement rooms, not just storage or utility areas. The result is a practical waterproofing membrane for both refurbishment and new-build below-ground projects where long-term performance, controlled drainage and certified system compatibility are important.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm-508-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-cdm-508-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm-508-table col:nth-child(1) { width: 34%; }\n  .pc-newton-cdm-508-table col:nth-child(2) { width: 37%; }\n  .pc-newton-cdm-508-table col:nth-child(3) { width: 12%; }\n  .pc-newton-cdm-508-table col:nth-child(4) { width: 17%; }\n\n  .pc-newton-cdm-508-table th,\n  .pc-newton-cdm-508-table td {\n    border: 5px solid #fff;\n    padding: 7px 10px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm-508-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-newton-cdm-508-table .pc-section-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 16px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-cdm-508-table .pc-section-head th:nth-child(2) {\n    text-align: center;\n  }\n\n  .pc-newton-cdm-508-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-newton-cdm-508-table .pc-data-row td:nth-child(2) {\n    text-align: center;\n  }\n\n  .pc-newton-cdm-508-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm-508-table .pc-feature-cell {\n    font-weight: 400;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-cdm-508-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-newton-cdm-508-table th,\n    .pc-newton-cdm-508-table td {\n      padding: 7px 8px;\n      border-width: 4px;\n    }\n\n    .pc-newton-cdm-508-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-cdm-508-table .pc-section-head th {\n      font-size: 15px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm-508-table-wrap\"\u003e\n\u003ctable class=\"pc-newton-cdm-508-table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-head\"\u003e\n\u003cth\u003eFeatures\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eColour\u003c\/td\u003e\n\u003ctd\u003eWhite\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eDensity\u003c\/td\u003e\n\u003ctd\u003e500 \/ 700\u003c\/td\u003e\n\u003ctd\u003eg\/m²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e2.0 \/ 2.4\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eLength\u003c\/td\u003e\n\u003ctd\u003e20\u003c\/td\u003e\n\u003ctd\u003em\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eArea\u003c\/td\u003e\n\u003ctd\u003e40 \/ 48\u003c\/td\u003e\n\u003ctd\u003em²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eHeight\u003c\/td\u003e\n\u003ctd\u003e8.0\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eMembrane Thickness\u003c\/td\u003e\n\u003ctd\u003e0.45\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003eEN 1849-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eStud Height\u003c\/td\u003e\n\u003ctd\u003e7.0\u003c\/td\u003e\n\u003ctd\u003emm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-50 to +80\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd\u003e126\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003ePackaged Weight\u003c\/td\u003e\n\u003ctd\u003e20 \/ 24 \/ 28 \/ 33.6\u003c\/td\u003e\n\u003ctd\u003ekg\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eService Temperature\u003c\/td\u003e\n\u003ctd\u003e-40 to +80\u003c\/td\u003e\n\u003ctd\u003e°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-head\"\u003e\n\u003cth\u003eInstalled Performance\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eUnits\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eWater Tightness at 60 kPa; 24h\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eTensile Strength MD\u003c\/td\u003e\n\u003ctd\u003e416\u003c\/td\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eTensile Strength CD\u003c\/td\u003e\n\u003ctd\u003e488\u003c\/td\u003e\n\u003ctd\u003eN\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eResistance to Static Loading\u003c\/td\u003e\n\u003ctd\u003e\u0026gt; 20\u003c\/td\u003e\n\u003ctd\u003eKg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eCompressive Strength\u003c\/td\u003e\n\u003ctd\u003e180\u003c\/td\u003e\n\u003ctd\u003ekN\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eFire Resistance\u003c\/td\u003e\n\u003ctd\u003eE*\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eType of Application\u003c\/td\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-feature-cell\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd colspan=\"3\"\u003eLifetime of structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-newton-cdm-508-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-newton-cdm-508-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-newton-cdm-508-ancillary-table col:nth-child(1) { width: 26%; }\n  .pc-newton-cdm-508-ancillary-table col:nth-child(2) { width: 74%; }\n\n  .pc-newton-cdm-508-ancillary-table th,\n  .pc-newton-cdm-508-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 13px 10px;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-section-title th {\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 12px;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-column-head th {\n    background: #a6a6a6;\n    color: #111;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-newton-cdm-508-ancillary-table .pc-product-cell {\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-newton-cdm-508-ancillary-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-newton-cdm-508-ancillary-table th,\n    .pc-newton-cdm-508-ancillary-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-newton-cdm-508-ancillary-table .pc-main-title th {\n      font-size: 23px;\n      padding: 10px 8px;\n    }\n\n    .pc-newton-cdm-508-ancillary-table .pc-section-title th {\n      font-size: 18px;\n      padding: 10px 9px;\n    }\n\n    .pc-newton-cdm-508-ancillary-table .pc-column-head th {\n      font-size: 18px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-newton-cdm-508-ancillary-table-wrap\"\u003e\n\u003ctable class=\"pc-newton-cdm-508-ancillary-table\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"2\"\u003eNewton CDM 508 Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplugs-cavity-drain-membrane-fixing-plugs-a1\" target=\"_blank\"\u003eNewton CDM MultiPlugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist membrane fixing plugs used to mechanically secure Newton CDM 508 Membrane to suitable wall substrates. The sealing washer helps maintain the integrity of the membrane fixing point, making them suitable for standard wall installation details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-nuseal-plugs-vaulted-ceiling-membrane-fixing-a2\" target=\"_blank\"\u003eNewton CDM NuSeal Plugs\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist membrane fixing plugs used for vaulted, sloping or overhead applications where a standard washer seal is not suitable. These are sealed with Newton CDM Rope to create a reliable watertight fixing detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-multiplug-pins-cavity-drain-membrane-fixing\" target=\"_blank\"\u003eNewton CDM Fixing Plug Expansion Pin\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eExpansion pin used within the CDM fixing plug to help secure the fixing into the substrate. It forms part of the mechanical fixing detail that holds the membrane in place without compromising the system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-joint-tape-double-sided-butyl-membrane-tape\" target=\"_blank\"\u003eNewton CDM Joint Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-sided butyl jointing tape used to seal membrane overlaps, flanged joints and sheet-to-sheet connections. It helps maintain waterproofing continuity where Newton CDM 508 sheets are joined together.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-rope-butyl-membrane-sealing-rope\" target=\"_blank\"\u003eNewton CDM Rope\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eButyl sealing rope used where a flange seal is not possible, around more awkward details and for sealing NuSeal Plug fixings in vaulted or overhead work. It provides a flexible seal around irregular membrane junctions and penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-overtape-butyl-membrane-sealing-corner-tape\" target=\"_blank\"\u003eNewton CDM OverTape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eWider detailing tape used for sealing abutting joints, repairs, reveal details and connections between floor membranes, wall membranes and drainage upstands. It is particularly useful where a broader surface seal is required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-basedrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM BaseDrain\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePerimeter drainage channel normally positioned at the wall-to-floor junction to collect water from behind the wall membrane and from the vulnerable wall\/floor junction. It directs water towards a suitable sump, gully, waste pipe or drainage outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-floordrain-channel\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM FloorDrain\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDrainage channel used where required within larger or more detailed Newton CDM waterproofing designs. It can assist with floor-level water collection and cross drainage where the system design requires it.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDetail strip used with Newton CDM BaseDrain to help form the correct connection between the floor membrane and drainage channel. It allows condensation from the membrane face to be collected by the drainage system rather than pooling at the floor edge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Inspection Ports\u003c\/td\u003e\n\u003ctd\u003eAccess points incorporated into the drainage system to allow future inspection, cleaning and maintenance of the drainage channel. They help keep the drainage route serviceable after the membrane and finishes have been installed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton CDM BaseBoard\u003c\/td\u003e\n\u003ctd\u003eAlternative drainage method that may be considered where existing floor levels do not provide enough headroom for Newton CDM BaseDrain within a Newton CDM Fibran XPS 500-C spacer build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003eSump Chambers\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eChambers used to collect water from the cavity drain system before it is pumped or discharged to a suitable outlet. They form part of the wider drainage and water management arrangement where natural drainage is not suitable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003ePumping Equipment\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePumping equipment used where water collected by the drainage system needs to be removed mechanically. The pump arrangement must be sized to suit the expected water ingress, pumping head, discharge distance and drainage layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eGullies And Waste Pipes\u003c\/td\u003e\n\u003ctd\u003eDrainage connection points that can be used with Newton CDM BaseDrain where suitable. They help direct collected water away from the cavity drain system as part of the designed drainage route.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eDischarge Pipes\u003c\/td\u003e\n\u003ctd\u003ePipework used to carry water away from the sump and pump arrangement to the chosen discharge point. Correct discharge design is important where the waterproofed area relies on pumping to remain dry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" rel=\"noopener\" target=\"_blank\"\u003eHigh Water Level Alarms\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAlarm systems used to warn of high water levels within a sump chamber. They provide additional protection by alerting the user before water levels rise high enough to affect the waterproofed area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eBattery Back-Up Systems\u003c\/td\u003e\n\u003ctd\u003eBack-up power systems used where the waterproofed area relies on pumps and needs additional protection during a power failure. They should be sized to suit the expected water volume and risk profile of the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eMonitoring And Telemetry Systems\u003c\/td\u003e\n\u003ctd\u003eMonitoring systems used where additional pump and drainage oversight is required. They can provide early warning of pump issues, high water levels or maintenance requirements within higher-risk waterproofing designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton 106 Lime Inhibitor \/ \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti Lime Sealer\u003c\/a\u003e\n\u003c\/td\u003e\n\u003ctd\u003eAnti-lime treatments used on new concrete to help reduce the risk of free lime being drawn out by water movement. They help protect drainage paths, membrane voids and channels from lime scale build-up within the cavity drain system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eClosed-cell slotted insulation board used within suitable Newton CDM floor and drainage build-ups. It can support the formation of a controlled floor build-up where insulation and drainage detailing are required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/floor-damp-proofing-membrane-newton-slimline\" rel=\"noopener\" target=\"_blank\"\u003eNewton DampSafe 601 Slimline\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSlimline DPC-style membrane that can be used through reveal details as an alternative where a studded membrane detail is not practical. It is taped to the wall membrane using suitable Newton CDM tapes.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton DampSafe 809-HP DPC\u003c\/td\u003e\n\u003ctd\u003eHigh-performance DPC used where waterproofing continuity is required through internal or external walls, or around specific detailing points. It can be sealed into the CDM system using suitable Newton jointing and sealing products.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003eDamp Proof Course (DPC)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDPC patching detail used where service penetrations through the floor membrane cannot be avoided. It can be sealed to the service with Newton CDM Rope and around the perimeter with Newton CDM Joint Tape.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Collar\u003c\/td\u003e\n\u003ctd\u003ePreformed pipe sealing accessory used where service penetrations through Newton CDM 508 cannot be avoided. It helps create a controlled seal around pipes and other protrusions through the membrane system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Sleeve\u003c\/td\u003e\n\u003ctd\u003ePipe sealing accessory used where services must pass through Newton CDM 508, particularly where services are grouped or routed through a pipe. It helps maintain waterproofing continuity around penetration details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eNewton Pipe Seal\u003c\/td\u003e\n\u003ctd\u003ePreformed pipe collar system used to seal around protrusions where pipes, cables or other services interrupt the membrane layer. It provides an additional sealing option for service penetrations through the CDM system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eSpecial Ties\u003c\/td\u003e\n\u003ctd\u003eTies used where internal block or brick walls are built in front of the membrane and require restraint back to the retaining wall. They are designed to fit into CDM fixing plugs without unnecessarily puncturing the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eRetaining Clips\u003c\/td\u003e\n\u003ctd\u003eClips used with suitable ties to help hold wall insulation in place within the CDM wall build-up. They support the internal lining arrangement while keeping the membrane protected behind the finished construction.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 should be installed only by competent installers with suitable experience in structural waterproofing, basement waterproofing and Type C cavity drain membrane systems. The \u003cstrong\u003eNewton CDM 508 Technical Data Sheet\u003c\/strong\u003e states that CDM 508 is a constituent part of the Newton CDM System, which is a Type C internal waterproofing system, and that it should be installed by those with experience of structural waterproofing. Newton also recommends installation by Newton Specialist Contractors trained in the correct design and installation of the system, which is stated as a requirement of the BBA Certificate.\u003c\/p\u003e\n\u003cp\u003eBefore work begins, the installer should read the \u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e and the \u003cstrong\u003eNewton CDM 508 Technical Data Sheet\u003c\/strong\u003e, assess the site conditions and confirm that the chosen specification is suitable for the structure. Newton CDM 508 should be used only as stated within the application guidance, and normal site health and safety requirements should be followed. Suitable PPE should be worn, including gloves and safety glasses, particularly when drilling, cutting membrane, handling tapes, working overhead or using a heat gun. Where work is carried out at height, such as on vaulted soffits or high walls, suitable staging or scaffold should be used rather than unsafe steps or improvised platforms.\u003c\/p\u003e\n\u003cp\u003eCare must be taken when using SDS drills, cutting tools and hot air guns. Drilling should be controlled to avoid damaging the membrane, the substrate or hidden services. Cutting should be carried out with a sharp knife and spare blades so the membrane can be trimmed cleanly without tearing. Heat guns are commonly used to dry membrane surfaces and assist adhesion of tapes in cold or damp conditions, but they should be used carefully to avoid overheating the membrane, damaging adjacent materials or creating a fire risk. The working area should be kept clean, well lit and organised so membrane rolls, tools and tapes can be handled safely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 is not a standalone waterproofing product and must not be treated as a barrier that holds back water pressure on its own. It forms part of the Newton CDM System, a Type C cavity drain waterproofing system that works by creating depressurisation spaces behind the studded membrane and within drainage channels. These spaces allow water ingress to be controlled and directed safely to drainage, a sump chamber or another suitable discharge route. The Newton CDM System does not seek to hold back hydrostatic water pressure; it manages water by collecting and removing it.\u003c\/p\u003e\n\u003cp\u003eThe design must comply with BS 8102:2022 for the protection of below-ground structures against water ingress. The manual states that, unless extensive groundwater analysis has been undertaken, the design should assume water pressure to the full depth of the basement, and must also consider changing groundwater levels, burst water mains, surface flooding and similar risks. Adequate drainage and water removal must be included within the design because the Newton CDM System will not hold back water pressure.\u003c\/p\u003e\n\u003cp\u003eThe external elements of the structure should control the rate of water ingress so that it does not exceed the capacity of the cavity drain system. For existing structures, the level of water resistance, the presence or absence of external drainage, ground conditions and construction type should be assessed before installation. In some cases, the structure may need upgrading before Newton CDM 508 is installed, using measures such as a new structural slab, a Type A slurry tanking membrane or resin injection to reduce water flow. For new-build structures, the structure should be designed to be as watertight as required for its intended use, with suitable crack control, robust joint detailing, dense concrete and protection against contaminants where needed.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 is available in 500g\/m² and 700g\/m² variants. Both variants are suitable for wall applications, but only the 700g\/m² variant should be used for floors. The 500g\/m² versions must not be used for floor applications because they do not have the required compressive strength for that use. CDM 508 is also not suitable for gas protection systems, so where radon, methane or hydrocarbon gas protection is required, the specification should be changed to an appropriate Newton gas-rated system rather than relying on standard CDM 508.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 is suitable for installation to walls constructed from concrete, brick and concrete block. It can also be fixed to ICF construction where special longer fixing plugs are used. The substrate must be capable of receiving the chosen Newton CDM fixing plug securely, and any weak, friable, excessively uneven or deteriorated areas should be addressed before installation begins.\u003c\/p\u003e\n\u003cp\u003eFor floors, Newton CDM 508 should be installed only where the correct density variant is selected. The 700g\/m² CDM 508 variant may be used over a concrete raft or slab, and the Technical Data Sheet also lists Newton Fibran XPS 500-C closed cell extruded polystyrene insulation as a suitable floor substrate within the relevant Newton system build-up. Where CDM 508 is used above a 50mm insulation spacer, Newton Fibran XPS 500-C is the tested product for use as the BaseDrain spacer below the floor membrane, and design loadings should be checked where high loads are expected.\u003c\/p\u003e\n\u003cp\u003eFor soffits, Newton CDM 508 may be used on concrete soffits where the soffit is to a fall, and on brick arched or vaulted soffits. Flat soffits are heavily restricted and should not be treated as routine applications. They must be considered carefully because water must be able to drain away without ponding behind the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore installing Newton CDM 508, the area must be assessed to determine what preparation is required. All timber and organic material must be removed from behind the system to prevent fungal or bacterial growth. This includes items such as skirting boards, timber plates, old wallpaper and similar organic materials. If rot is present, it should be dealt with by a specialist before the membrane is installed. If mould is present, the area should be cleaned and sterilised with a fungicidal wash.\u003c\/p\u003e\n\u003cp\u003eWalls must be suitable for fixing. Where walls are uneven or have deteriorated, large depressions should be levelled and made good so the fixings can hold properly and the membrane can sit in a controlled manner. The aim is not to create a perfectly smooth decorative surface, but the wall must be capable of receiving the fixings and allowing the membrane to be installed neatly without excessive sagging, distortion or unsupported areas.\u003c\/p\u003e\n\u003cp\u003eFor floor applications, the floor must be cleared of oil, loose material and sharp protrusions. Holes or severe depressions should be filled, and the slab or raft must be made suitable for drainage. The manual makes clear that the performance of the drainage system depends on the gradient and regularity of the slab or raft, and that both the design of a new slab and the preparation of an existing slab are fundamental to the success of Type C waterproofing. The surface regularity recommended for the Newton CDM System is SR1 or better, which is 3mm on a slip gauge. Surface regularity and departure from datum should be tested using water in a flood test or by laser levels. Any irregularities should be made good by planing, grinding or using a suitable levelling compound such as Ardex Arditex NA.\u003c\/p\u003e\n\u003cp\u003eFor floors, the datum point is the slab height where the drainage channel is adjacent to the sump chamber. Deviation from this datum must not be more than -5mm at any point between the datum and the furthest point of the waterproofing system. A deviation of up to +15mm may be acceptable only where it occurs at the furthest point from the datum and does not occur at a mid-point that could strand water. This is important because trapped standing water can block the cavity or drainage system with silt or lime scale, and the Newton CDM System relies on free water movement to the drainage point.\u003c\/p\u003e\n\u003cp\u003eWhere flat soffits are being considered, the soffit must have a fall to promote drainage and prevent ponding. Any sagging of the membrane must be avoided because it can create pockets where water may sit behind the membrane. The manual refers flat soffit installations to the BS 8102:2022 guidance for inverted cavity drain systems, and the Newton CDM 508 Technical Data Sheet applies further restrictions to this type of work.\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with Newton 106 Lime Inhibitor or Wykamol Anti Lime Sealer to prevent free lime from curing concrete being drawn out by ingressing water. This is particularly important because lime scale and silt can affect drainage performance within cavity drain systems. The substrate, membrane surfaces and all sealing areas should be clean, dry and dust free before any tapes, ropes or sealing products are applied.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-717_1024x1024.webp?v=1779713188\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cem\u003e\u003cbr\u003eAnti-lime sealer being applied to prepared concrete before installation of Newton 508 Waterproof Membrane.\u003c\/em\u003e\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe minimum tools required for Newton CDM 508 installation include a good quality 110V SDS hammer drill, suitable 10mm or 11mm SDS drill bits depending on the plugs being used, a mallet or club hammer, a sharp Stanley knife with spare blades, a tape measure, a long spirit level, clean rags, suitable staging or scaffold for work at height, gloves and safety glasses. Recommended additional equipment includes extra lighting, a 110V hot air gun and a rotating laser level. The Newton CDM 508 Technical Data Sheet also identifies high quality SDS drill and drill bits, a heat gun and a rotating laser level as specialist tools, with the laser level recommended rather than mandatory.\u003c\/p\u003e\n\u003cp\u003eThe key ancillary products for Newton CDM 508 include Newton CDM MultiPlugs, Newton CDM NuSeal Plugs, Newton CDM Rope, Newton CDM Joint Tape, Newton CDM OverTape, Newton CDM BaseDrain, Newton CDM FloorDrain where required, Newton CDM Condensation Strip, Damp Proof Course (DPC) where continuity is needed through internal walls, Newton Pipe Collar or Newton Pipe Sleeve for service penetrations, and suitable Newton drainage and pumping systems. CDM Joint Tape is used for jointing membranes along the flange. CDM Rope is used where a flange seal is not possible and for sealing plugs in vaulted or overhead work. CDM OverTape is used for connecting floor membranes to BaseDrain upstands, connecting floor membranes to wall membranes, sealing abutting joints of CDM 508, and for repairs and reveal details.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDrainage is central to the correct use of Newton CDM 508. The system must remove water from behind and beneath the membrane and take it to a safe point of discharge, such as a sump chamber or a suitable natural drainage outlet. Standing water must not be allowed to remain below the membrane because it can block the system with silt or lime scale. The design must allow water to flow uninterrupted to the drainage point.\u003c\/p\u003e\n\u003cp\u003eNewton CDM BaseDrain is placed at the wall\/floor junction to collect water from behind the wall membrane and receive water at the wall\/floor junction. It is a maintainable drainage method because Newton Inspection Ports can be inserted into the system. CDM BaseDrain can interface with sump chambers, gullies, waste pipes and associated drainage arrangements. Where existing floors provide insufficient headroom to use CDM BaseDrain within a spacer of Newton CDM Fibran XPS 500-C insulation, CDM BaseBoard can be used as an alternative drainage system.\u003c\/p\u003e\n\u003cp\u003eFor larger waterproofing designs, the pumping system must be sized and located correctly. The manual states that the general rule of thumb is one sump for every 50m of CDM BaseDrain, although this depends on the watertightness of the structure, the likely water ingress, ground conditions, slab levels and overall drainage design. In larger properties, strategically placed sumps, cross drainage channels of CDM FloorDrain or Titan collection sumps connected to larger Trojan-Pro pumping systems may be used. Pump size depends on expected flow, pumping head and chamber size, with discharge pipes generally sized to suit the pump output.\u003c\/p\u003e\n\u003cp\u003eThe drainage system should discharge appropriately, ideally to a suitable drainage or attenuation system that can receive the designed water volume and is not susceptible to flooding, freezing or surcharge back into the building. Pump discharge directly into a combined sewer should not occur without appropriate consents and suitable non-return valves. Where contaminated water is expected, discharge consents should be sought. Battery back-up should be considered, and Newton Victron Battery Back-up systems are available so pumping can continue during power failure, subject to the battery capacity being correctly assessed for the volume of water expected during the outage.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-911_1024x1024.webp?v=1779715087\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cem\u003e\u003cbr\u003eNewton CDM Basedrain positioned at the wall-to-floor junction to collect water from behind the Newton CDM 508R Waterproof Membrane, with Newton CDM Overtape securing the channel to the Newton Condensation Strip and Newton CDM Fibran XPS 500-C Insulation beneath (via Newton CDM 508R Waterproof Membrane as a floor membrane). \u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 can be fixed either vertically or horizontally to walls. The choice depends on the size of the area, the wall height and the width of the membrane. Horizontal fixing generally requires fewer cuts and less jointing, but the full roll is heavy at the start. Vertical fixing involves lighter strips, but each sheet must be jointed back together with CDM Joint Tape, so it normally uses more tape.\u003c\/p\u003e\n\u003cp\u003eThe membrane is fixed to the wall using the appropriate Newton CDM fixing plug for the application. CDM MultiPlugs and CDM Plugs include a soft rubber sealing washer to seal the plug to the wall membrane. CDM NuSeal Plugs require a bead of CDM Rope to create the seal before installation. For standard wall work with Newton CDM 508, the CDM MultiPlug is commonly used, but the selected plug must suit the substrate and the required fixing detail.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-220_1024x1024.webp?v=1779713172\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003ePosition the Newton CDM 508 against the wall as level as possible. Using a 10mm drill bit, drill through the centre of a stud near the top edge of the membrane to a depth greater than the fixing. The fixing is then hammered into the pre-drilled hole until the plug sits flush within the stud. Where a rubber washer is used, the washer re-seals the hole. The membrane should then be levelled with a long spirit level or rotating laser level, and a second plug fixed approximately 2m along the top of the sheet. At this stage, the membrane is hanging level from the wall.\u003c\/p\u003e\n\u003cp\u003eFor horizontal installation, continue fixing along the top edge at approximately 2m intervals until the wall is covered or the roll ends. The level should be checked regularly. If the membrane is not installed level, it may kink, appear unsightly and move out of alignment when taken around corners. For vertical installation, hang each subsequent sheet using the same initial top-fixing method, overlapping by at least the width of the flange of the new sheet. Interlocking the first stud of the new sheet with the last stud of the previous sheet can help keep the new sheet level.\u003c\/p\u003e\n\u003cp\u003eVertical joints should be sealed with CDM Joint Tape. It is generally easier to apply the tape to the inner surface of the flange of the next sheet. The flange and the face of the previous sheet should be cleaned with a clean rag before sealing. Once the new sheet is fixed level with the correct overlap, remove the backing paper from the tape while applying pressure to the flange. After the backing paper has been removed, apply further pressure with the palm of the hand along the whole joint. A hot air gun should be used to help sealing, especially in cold or damp conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_508_1024x1024.png?v=1782306398\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003eTypical wall and floor junction detail showing Newton 508 Waterproof Membrane installed as part of a cavity drain waterproofing system, with associated drainage, fixing, insulation and screed components.\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eOnce the wall membrane is hanging from the initial top fixings, the remaining fixing plugs can be installed. Fixing centres depend on the type of wall finish. Where timber battens are used, fixings should be at 600mm centres vertically and 400mm centres horizontally. For barrel vaults, tighter centres are required, with 300mm around the vault and 600mm down the vault. For fixed metal track systems such as Gypliner, fixings should be at 800mm centres vertically and 600mm centres horizontally. Where brick or block walls are restrained back to the retaining wall using ties, fixings should be set out to provide the correct number of restraints at the required centres.\u003c\/p\u003e\n\u003cp\u003eFree-standing timber frames, free-standing metal frames and free-standing block walls do not require the same specific fixing centres because the finish is not directly supported from the retaining wall membrane. In these cases, enough fixings should be used to keep Newton CDM 508 neat, tidy and reasonably tight to the wall, especially around corners and reveals. All fixings should be aligned both horizontally and vertically, particularly where they will later receive battens, rails, ties or other internal lining components.\u003c\/p\u003e\n\u003cp\u003eIf timber battens are used, they should be pre-treated and at least 25mm x 38mm, although 25mm x 50mm may provide better edge fixing for plasterboard. Battens can be fixed into the CDM fixing plug without piercing the membrane by using 5mm size 10 self-tapping screws. The plug will accept 30mm of screw, so screw length must be selected according to the batten thickness. Over-tightening or using screws that are too long can loosen the plug, and care must be taken not to puncture the membrane when drilling or fixing. Plasterboard can then be fixed to the battens with clout nails or, preferably, plasterboard screws, ensuring the screws do not exceed the batten depth and puncture the membrane.\u003c\/p\u003e\n\u003cp\u003eOther internal finishes can be used depending on the specification. Free-standing frames are suitable where walls are undulating, such as in some stone structures, or where space loss is less critical. Proprietary systems such as Gypliner or Lafarge systems can be used with the Newton CDM System. Internal block or brick walls can also be built in front of the membrane, with special ties available to fit into the CDM fixing plug for lateral restraint. These ties and retaining clips can also help hold wall insulation in place. Newton CDM 508 itself is not a meshed membrane and does not provide a direct plaster or render key, so direct plastering or rendering applies to Newton 508 Mesh rather than standard Newton CDM 508.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-796_1024x1024.webp?v=1779713176\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003eNewton MultiPlugs fixing Newton 508 to the wall, with fixing centres set to suit the internal finish, typically 600mm vertically and 400mm horizontally for timber battens.\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 may be used on floors only in the 700g\/m² variant. The 500g\/m² version should not be used for floor applications because it does not have the required compressive strength. Before installation, the floor must be prepared, levelled, cleaned and checked as described above, and the drainage system must be confirmed. Both edges of the membrane should always be cleaned before making any joint.\u003c\/p\u003e\n\u003cp\u003eStarting at one side of the room, unroll the membrane with the studs facing down and cut it to fit the room in a similar manner to laying a carpet. The next width of membrane is rolled out so that the flanged edge overlaps onto the edge of the previous roll. Both edges must be cleaned before sealing. CDM Joint Tape is then applied to the high flat area between the first two studs at the edge of the previous roll, with the backing paper still intact. The two widths should be checked for alignment, with the flange covering the backing paper. Starting from the end of the joint, remove the backing paper and press down along the joint to seal the two sections together. This process is repeated until all required floor areas are covered.\u003c\/p\u003e\n\u003cp\u003eThe Newton floor membrane must be sealed to the upstand of the CDM BaseDrain channel, or to the CDM Condensation Strip where fitted, using CDM OverTape. A heat gun should be used to dry the membrane surface and assist the bond of the tapes, particularly where conditions are cold or damp. Where the floor membrane must be jointed to horizontal DPCs, such as Damp Proof Course (DPC) through internal or external walls, these joints should be sealed with CDM Joint Tape, and both surfaces must be clean and dry before the joint is made.\u003c\/p\u003e\n\u003cp\u003eServices through the floor should be avoided wherever possible because they create weaknesses and allow unnecessary water ingress. Where a service penetration is unavoidable, the membrane can be cut and trimmed around the service, and the gap filled and sealed using the appropriate Newton adhesives or sealing products. If required, a patch of membrane or Damp Proof Course (DPC) can be laid over the area and sealed to the service with CDM Rope, with the patch perimeter sealed using CDM Joint Tape. Newton Pipe Collar or Newton Pipe Sleeve can also be used.\u003c\/p\u003e\n\u003cp\u003eThe specified floor finish can be laid directly over the floor membrane, but the membrane must not be punctured by fixings through the floor. Where a timber floor finish is used, an expansion gap must be allowed around the wall edge, and the floor finish supplier should be consulted to confirm the correct expansion gap size. The manual also states that Newton membranes can be laid onto green concrete as soon as it is walkable, allowing floor coverings to be installed without reference to relative humidity levels because the construction moisture is controlled within the air gap.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-811_1024x1024.webp?v=1779713180\" alt=\"Newton CDM 508 Membrane - 8mm Studded Waterproof Radon Barrier Membrane - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 can be used for vaults and vaulted soffits. The membrane must be fixed and lapped in a way that prevents water ponding behind the system. Laps and joints must be detailed so that water drains correctly and does not sit on the joints. The rubber sealing washer supplied with CDM MultiPlugs or CDM Plugs should not be used for fixing the membrane to vaulted ceilings or soffits. Instead, a seal made from a ring of CDM Rope should be used with the chosen Newton CDM fixing plug.\u003c\/p\u003e\n\u003cp\u003eFor vaulted cellar applications, measure the depth of the vault from the front wall to the back wall and allow for a 200mm downturn at each end. Unroll the membrane and cut it to size. Estimate the approximate centre of the arched ceiling and mark it, then measure down the arch by 1.2m and mark again. Strike a horizontal line along the wall from back to front. This line acts as a guide for the sheet edge and helps keep the sheet sections symmetrical. Masonry nails can be used along the guide line to create a physical edge where useful.\u003c\/p\u003e\n\u003cp\u003eOffer the first membrane section up to the ceiling, allowing a 200mm lap to the back wall. Using the guide line to keep the sheet square, drill and fix the sheet along the apex of the arch, following the same line of studs. Use either CDM MultiPlugs or CDM NuSeal Plugs, with CDM Rope used to seal the plugs. The manual specifically notes that the rubber washer supplied with the CDM MultiPlug is not suitable for this application, and that plugs should be ordered without washers where CDM Rope is being used to form the seal. Fixings should be installed through the centre of the membrane studs at approximately 600mm centres, and should be kept in line because they provide fixing points for the battens.\u003c\/p\u003e\n\u003cp\u003eThe next section of membrane should also be cut to size with a 200mm lap at each end. Before offering up the next sheet, apply CDM Joint Tape to the edges of the first sheet, either on the flanged edge or between the last two rows of studs on the non-flanged edge. Leave the protective paper in place while positioning the next sheet, ensuring the flanged edge overlaps onto the sealing tape. Once the second sheet is positioned correctly, remove the protective paper working out from the middle and form the seal. Continue fixing in this way until the arched walls are covered down to the springer and the vertical walls below the springer, maintaining the 200mm lap to the end walls.\u003c\/p\u003e\n\u003cp\u003eAt the end walls of a vaulted construction, an end piece of flat membrane is fitted to the end wall of the vault. The 200mm lap from the soffit membrane should be cut in fans so it fits the curve and sits neatly against the wall. Each cut should be filled with a small piece of CDM Rope or CDM Joint Tape. Cuts should not be made all the way up to the ceiling, and as few cuts as possible should be made. The end wall membrane is then cut to size, fixed in front of the fanned ceiling membrane and trimmed neatly into the curve of the ceiling. The membrane is then pulled back at the sides and around the arch to expose the studs on the reverse side, and CDM Rope is used to form the joint, following the contour of the ceiling curve around the arch.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat soffits are restricted and should not be treated as a standard Newton CDM 508 application. The Newton CDM 508 Technical Data Sheet states that CDM 508 should not be applied to flat soffits unless the soffit is at least 400mm narrower than the membrane being used, and only by very experienced contractors.\u003c\/p\u003e\n\u003cp\u003eWhere flat soffits are considered, they must have a fall in line with drainage requirements. Sagging of the membrane must be avoided because sagging may cause ponding behind the system. The manual states that installation to flat soffits should follow BS 8102:2022 guidance for inverted cavity drain systems, and that if there is any doubt, Newton’s technical advice should be sought.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDoor reveals require careful detailing so that the Newton CDM 508 system remains continuous around the opening. When fitting membrane to an end wall with a door opening, allow for a section of membrane around the door head, lapped down the sides by approximately 100mm. The wall membrane can then be wrapped around the sides while maintaining the correct drainage detail and forming an overlap. This method may leave a small gap on the angle of the door opening, which should be sealed with CDM OverTape. As an alternative, Newton DampSafe 601 Slimline or Newton DampSafe 802-DPM can be used through the reveal, taped to the wall membrane with CDM Joint Tape and CDM OverTape.\u003c\/p\u003e\n\u003cp\u003eCorners and junctions should be planned so membrane overlaps support continuous drainage behind the system. Overlaps must not be formed in a way that allows water to drain onto a joint or become trapped by a joint. On walls, the membrane may be installed vertically or horizontally, and overlaps can be made using the flanged edge or by overlapping a minimum of three rows of studs where appropriate.\u003c\/p\u003e\n\u003cp\u003eFor 8mm cavity drain membranes such as Newton CDM 508, the preferred sealed joint is the flanged joint where the flat flanged edge is available. Consecutive membrane widths are fixed to walls or laid to floors so that the flange lies over the studded edge of the previous sheet, covering a minimum of two rows of studs. CDM Joint Tape is placed beneath the flange on the studded edge sheet, positioned between the last two rows of studs on the flat section, and pressed firmly into place with the backing paper left on until the upper flange is correctly positioned. The backing paper is then removed and the two membrane layers are pressed firmly together.\u003c\/p\u003e\n\u003cp\u003eA locked flanged joint may be used where the first line of studs of the next sheet is interlocked with the last line of studs of the previous sheet. This helps guarantee that the next sheet is fitted square to the previous one and is useful on large floors or where horizontal wall membrane joints need to remain straight. Where a flanged joint is not possible but the studs line up correctly, a stud-into-stud joint can be made with a minimum three-stud overlap using CDM Joint Tape. Where the studs do not interlock, a stud-over-stud joint is made with a minimum three-row overlap and CDM Rope positioned between the last two rows of studs on the reverse side of the upper membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Newton 508\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eService pipes, cables, conduits and other intrusions should be avoided where possible because they interrupt the continuous waterproof layer. Where services through floors or walls cannot be avoided, Newton CDM 508 should be trimmed neatly around the service and sealed with CDM Rope, CDM OverTape or a combination of both. If necessary, a patch of Damp Proof Course (DPC) can be placed over the detail and sealed to the service and around its perimeter using Newton sealing products. Newton Pipe Collar or Newton Pipe Seal preformed collars can also be used to seal around protrusions.\u003c\/p\u003e\n\u003cp\u003eFor floor penetrations, the manual specifically notes that protrusions through the floor slab or raft should be avoided wherever possible because they create weaknesses that allow unnecessary water ingress. Where a penetration is unavoidable, trim the membrane carefully, seal the gap properly and, where necessary, use a patch detail sealed with CDM Rope and CDM Joint Tape or use a Newton pipe sealing accessory.\u003c\/p\u003e\n\u003cp\u003eFor overhead intrusions within vaulted soffits or arches, service pipes, electrical wiring and other services should ideally be re-sited to a vertical surface where they can be better sealed and positioned on the dry side of the system. Many services can be concealed between battens. Where services must pass through the membrane, they should be grouped where possible and passed through a pipe sealed with one of the Newton pipe sleeve options.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Newton 508 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 must always be protected by suitable surface finishes. On walls and vaulted soffits, the suitable protection methods listed for standard Newton CDM 508 are a floor-supported dry-lining frame with plasterboard, or timber battens fixed into Newton CDM MultiPlugs as a support for plasterboard or wooden sheeting. Suitable plasters and renders apply to Newton 508 Mesh only, not standard Newton CDM 508.\u003c\/p\u003e\n\u003cp\u003eFor floors, the membrane may be protected by screed, tongue-and-groove chipboard, a timber floor supported by a fixed lattice of timber supports, insulation with screed or tongue-and-groove chipboard above, or an underfloor heating tray with screed above. Any finish must be installed without puncturing the membrane, and future fixings through the floor build-up must be considered carefully.\u003c\/p\u003e\n\u003cp\u003eThe stated service life of Newton CDM 508 depends on it being specified, installed and protected in accordance with the Data Sheet and Installation Manual, and being fully and permanently isolated from UV light, physical damage and wearing. This means the membrane should not be left exposed to long-term sunlight, impact, abrasion or trafficking without protection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFire Protection\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 is fire rated to Euroclass E under BS EN 13501-1. The Technical Data Sheet states that this is the same as plastic-based insulation, and that the membrane must always be protected from fire by surface finishes in the same way insulation would be protected.\u003c\/p\u003e\n\u003cp\u003eWhere a project requires a higher fire performance, Newton Waterproofing Systems can provide fire-resistant membranes tested and classified to a fire rating of B-s2,d0. This should be treated as a separate specification decision and confirmed with Newton where the fire strategy requires a higher-performing membrane or specific fire-rated construction build-up.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eVentilation is a design requirement for habitable spaces and is particularly important in basements and below-ground rooms. The Newton CDM Installation Manual refers to Part F of the Building Regulations 2010 and explains that adequate ventilation is required to extract water vapour and pollutants, supply outdoor air, dilute pollutants, disperse water vapour and support a healthy internal environment. Basements can be more difficult to ventilate naturally because the living space walls may be earth-retaining to several elevations.\u003c\/p\u003e\n\u003cp\u003eBS 8102:2022 recognises that mechanical heating and ventilation often play an important role in creating the internal environment and controlling condensation, particularly where higher grades are required. For Grade 3 environments, the manual states that ventilation, dehumidification or air conditioning is necessary and should be appropriate to the intended use. Newton recommends that mechanical ventilation is included within the design of all Newton waterproofing systems.\u003c\/p\u003e\n\u003cp\u003eCondensation risk must be considered. Warm air can hold more moisture than cool air, and when a cool surface falls below the dew point, condensation forms. In insulated basement constructions, less heat reaches the face of the waterproofing membrane, making the membrane surface cooler and increasing condensation risk. The risk is reduced by controlling relative humidity through ventilation.\u003c\/p\u003e\n\u003cp\u003eThe Newton CDM System includes a condensation collection safety mechanism. CDM BaseDrain has spacers on the reverse side of the upstand where it contacts the wall membrane, so any condensation forming on the face of the wall membrane can be received into the drainage channel. Where screed depth is greater than the 60mm back flange of the CDM BaseDrain, Newton CDM Condensation Strip should be used to provide the condensation gap. The manual notes that this gap should generally be left open unless there is a good reason for closing it. If the gap is sealed, such as in gas barrier designs, it is essential that the ventilation system works as designed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore finishes are applied, Newton CDM 508 should be inspected carefully. Any repairs required during installation should be dealt with as they occur, rather than left until the end of the job. This reduces the risk of overlooked punctures, failed seals or poor joints being hidden behind finishes.\u003c\/p\u003e\n\u003cp\u003eOnce the Newton CDM System is installed and before dry lining, screeds, chipboard, battens or other finishes cover it, the membrane should be checked for damaged areas. All joints, laps, seals, fixing plugs, service penetrations, door reveals, floor junctions and vaulted details should be checked to make sure they are complete and properly bonded. Any necessary repairs should be carried out in accordance with the repair guidance before the membrane is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Newton 508\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf the wrong stud is drilled in error, the stud should be cleaned with a clean cloth and plugged with CDM Rope. The repaired area can then be covered with a small patch of CDM OverTape. The same repair method can be used where a fixing has not been achieved successfully due to drilling into unsound joints or weak structure, and where the CDM Fixing Plug expansion pin has not resolved the problem. The failed fixing should be repaired, and a new stud should be drilled for the replacement fixing.\u003c\/p\u003e\n\u003cp\u003eIf Newton CDM 508 is accidentally cut or pierced on a vertical wall, the surfaces should be cleaned with a clean cloth and sealed with CDM OverTape. The tape should bridge both edges of the cut and extend beyond the two furthest points of the damage by at least 25mm. Rips and ragged tears should be repaired using the same method, with CDM OverTape bridging the damaged area.\u003c\/p\u003e\n\u003cp\u003eIf a hole is created in the membrane, CDM OverTape can be used where the hole can be bridged in one piece with at least a 25mm margin around the damaged area. Larger damaged areas can be repaired by cutting a piece of wall membrane large enough to cover the hole with a margin beyond the damaged area. If the repair patch sits neatly into the studs, the edges can be sealed with CDM Joint Tape around the perimeter. If the studs do not interlock and a ridge is formed, CDM OverTape should be used to bridge around the perimeter of the patch onto the main membrane.\u003c\/p\u003e\n\u003cp\u003eFor floors and vaulted ceilings, repairs can be carried out using the same principles, but CDM OverTape must always be used to bridge or seal the damage. All surfaces to be sealed must be clean and dry before the repair is made. In some cases it is acceptable to warm the membrane and the CDM OverTape with a hot air gun to remove surface moisture and improve adhesion before sealing.\u003c\/p\u003e\n\u003cp\u003eAll repair work requires access to the system. If finishes have already been installed, they may need to be removed to reach the damaged membrane. In screeded floors, the screed must be removed with extreme caution to avoid causing further membrane damage. Where multiple damages have occurred in one section, it may be better to cut out and replace a larger section of membrane rather than patching many small defects.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 itself requires little maintenance once installed and protected, but the full Newton CDM System does require ongoing inspection of drainage and pumping components. The manual states that pump and drainage maintenance should include cleaning and de-scaling the pumping system as required, checking free movement of the pump impeller, checking pump seals for leaks and renewing as required, carrying out an impeller test, inspecting discharge pipes for damage and leaks, removing debris from the base of the sump, checking electrical connections and fuses, and flushing the CDM BaseDrain and CDM FloorDrain drainage system. This should be carried out at least once per year by a competent person, with any additional pump manufacturer requirements also followed.\u003c\/p\u003e\n\u003cp\u003eSump pumps depend on electricity, so a constant power source is important to maintain drainage capacity. Newton Victron battery back-up systems are available to keep the sump discharge operating during power failure, but the battery capacity must be suitable for the volume of water that may need to be pumped during an outage.\u003c\/p\u003e\n\u003cp\u003eNewton CDM membranes should not be pierced. If future works are proposed in the waterproofed area that may penetrate, disturb or affect the membrane, advice should be sought from the specialist installing company or Newton Waterproofing before the work is carried out. Even minor additions such as shelves, cupboards or other fixings should be checked with the installer so the correct fixing method can be advised and the waterproofing system is not compromised.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 is not a standalone waterproofing product and has no capability to withstand water pressure by itself. It must be used as part of a Type C cavity drain waterproofing system that safely removes water from the building. Drainage, inspection access, pumping, discharge routes and maintenance must therefore be treated as part of the waterproofing system, not as optional extras.\u003c\/p\u003e\n\u003cp\u003eThe 500g\/m² variants of Newton CDM 508, codes M1-5-48 and M1-5-40, must not be used for floors. Only Newton CDM System membranes with a density of 700g\/m² or higher should be used for floor areas. Newton CDM 508 is also not suitable for gas protection systems, so projects requiring radon, methane or hydrocarbon protection need a different Newton specification.\u003c\/p\u003e\n\u003cp\u003eFlat soffit applications are restricted. Do not apply Newton CDM 508 to flat soffits unless the soffit is at least 400mm narrower than the membrane being used, and then only by very experienced contractors. The soffit must have a fall, the membrane must not sag, and drainage must prevent ponding behind the system.\u003c\/p\u003e\n\u003cp\u003eFloor slabs and rafts must be checked before installation. They should be flood tested to ensure they are flat and level, and the deviation limits relative to the drainage channel and sump datum must be followed. Any irregularities should be corrected by planing, grinding or using a suitable levelling compound such as Ardex Arditex NA.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 must be protected from fire, UV light, physical damage and wear. It should be stored upright in dry conditions between 5°C and 25°C and should not be exposed to freezing conditions or direct sunlight. The membrane must not be punctured during installation of finishes, battens, floors, services or later alterations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eNewton CDM 508 is manufactured from HDPE and is white in colour. It is supplied in 500g\/m² and 700g\/m² densities, with roll widths of 2.0m or 2.4m, a roll length of 20m and roll areas of 40m² or 48m². The membrane has an overall height of 8.0mm, a stud height of 7.0mm and a membrane thickness of 0.45mm. The working temperature is -50°C to +80°C, the service temperature is -40°C to +80°C, and the softening temperature is 126°C. Packaged weights are listed as 20kg, 24kg, 28kg or 33.6kg depending on the roll variant.\u003c\/p\u003e\n\u003cp\u003eThe installed performance data lists water tightness at 60kPa for 24hours as a pass to EN 1928. Tensile strength is listed as 416N in the machine direction and 488N in the cross direction to BS 12311-2. Resistance to static loading is greater than 20kg to BS 12730, and compressive strength is stated as 180kN to BS EN ISO 25619-2. Fire resistance is Euroclass E to BS EN 13501-1, and the membrane is classified as Type V application.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 is supported by BBA Agrément Certificate 22\/6357 and is declared under BS EN 13967:2012 + A1:2017 as a waterproofing sheet for damp proof sheets, Type V. The declarations list water tightness at 60kPa for 24hours as a pass to EN 1928 and fire resistance as Euroclass E to EN 13501-1. The Technical Data Sheet also states that Newton CDM 508 is guaranteed against deterioration for 30 years and has a stated life expectancy of at least 100 years, although the waterproofing guarantee itself is provided by the specialist waterproofing contractor.\u003c\/p\u003e\n\u003cp\u003eNewton CDM 508 is inert and non-polluting to drinking water, highly resistant to water, alkalis, saline solutions and organic acids, and is not affected by minerals or hydrocarbons. It is rot-proof and resistant to bacteria, fungi and small organisms. When specified, installed and protected correctly, and when isolated from UV light, physical damage and wear, its service life is stated as equal to the design life of the structure.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Newton CDM 508 Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is an 8mm studded cavity drain waterproofing membrane used as part of the Newton CDM System for below-ground waterproofing. It is designed to create a controlled drainage cavity behind internal finishes, allowing water ingress to be managed rather than trapped against the wall or floor surface. This makes it suitable for basements, cellars, tunnels, vaulted soffits and earth-retained structures where a Type C drained protection system is required. Newton CDM 508 is available in 500g\/m² and 700g\/m² variants, with the heavier 700g\/m² version recommended for floors where additional robustness and compressive strength are required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Newton CDM 508 Membrane work?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane works by creating an 8mm cavity between the structure and the internal finish. Instead of acting as a direct barrier that tries to hold back water pressure, it allows moisture or water ingress to enter the cavity behind the membrane and then move safely towards drainage channels, outlets, sump chambers or pump systems. This drained protection approach helps relieve pressure and manage water in a controlled way. The studded profile keeps the membrane separated from the wall or floor, maintaining the drainage space. For the system to work properly, Newton CDM 508 must be used with correctly designed drainage, jointing, fixings and discharge arrangements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is a Type C drained protection system?\u003c\/h3\u003e\n\u003cp\u003eA) A Type C drained protection system is a waterproofing approach that manages water ingress by collecting and draining it away, rather than relying only on stopping water at the external face of the structure. Newton CDM 508 Membrane forms part of this type of system by creating a cavity where water can move behind or beneath the membrane. That water is then directed to suitable drainage, such as Newton CDM BaseDrain, outlets, sump chambers and pumps where required. This makes Type C systems particularly useful in basements and below-ground rooms where groundwater levels, hydrostatic pressure and seasonal moisture conditions can change over time.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where can Newton CDM 508 Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane can be used on earth-retained walls, floors, vaulted soffits, tunnels, cellars, basements and similar below-ground structures requiring controlled water management. It is suitable for both refurbishment work and new-build waterproofing designs, provided the full Newton CDM System is correctly specified. On walls and vaults, the 500g\/m² variant may be suitable depending on the project, while floors require the 700g\/m² variant because floor areas experience greater loading and installation demands. Newton CDM 508 is especially useful where damp, water ingress or salt-contaminated masonry needs to be separated from the internal finish while still allowing water to drain safely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 Membrane suitable for basement waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Membrane is highly suited to basement waterproofing when used as part of a correctly designed Newton CDM System. It is intended for below-ground spaces where water ingress needs to be controlled and directed to a suitable drainage and pumping arrangement. In basement conversions, cellar refurbishments and habitable below-ground rooms, the membrane helps isolate the internal finish from damp or water-bearing substrates. When correctly designed, installed and combined with appropriate drainage, sump and pump systems, Newton CDM 508 can contribute to internal environments up to Grade 3 under BS 8102:2022, which is generally the standard expected for dry habitable spaces.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is the difference between the 500g\/m² and 700g\/m² versions?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is available in 500g\/m² and 700g\/m² variants, allowing the correct grade to be chosen for the application. The 500g\/m² version is suitable for many wall, vault and vertical applications where the membrane is mechanically fixed and then protected by an internal lining system. The 700g\/m² version is recommended for floors because it provides greater robustness and resistance to compressive demands during installation and service. Floor areas may be exposed to foot traffic, insulation, screeds, chipboard, floor finishes and heavier loads, so the heavier membrane is the appropriate choice. The 500g\/m² variant should not be used for floors.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Membrane be used on floors?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane can be used on floors, but only the 700g\/m² variant should be used for floor applications. The 500g\/m² version does not have the required compressive strength for that use. Before installation, the floor should be clean, level, free from sharp protrusions and suitable for drainage towards the designed outlet or sump point. Surface regularity is important because standing water beneath the membrane can lead to silt or lime scale build-up and affect drainage performance. The membrane should be laid with studs facing down, jointed correctly with Newton CDM Joint Tape and sealed to the drainage upstand or associated detail as specified.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 Membrane be used on walls?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Membrane can be fixed to below-ground walls constructed from suitable substrates such as concrete, brick and concrete block. It can be installed vertically or horizontally, depending on the wall height, membrane width and preferred jointing method. Horizontal installation may reduce the number of joints, while vertical sheets are lighter to handle but usually require more jointing tape. The membrane is mechanically fixed using appropriate Newton CDM fixing plugs, with fixing centres selected according to the internal lining system. Timber battens, metal framing, free-standing frames or blockwork linings may be used, but the membrane should not be punctured unnecessarily after installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 suitable for vaulted soffits and arches?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane can be used on vaulted soffits, brick arches and similar curved below-ground structures, provided the installation is detailed correctly to prevent water ponding behind the membrane. Vaulted and overhead work needs careful fixing, lapping and sealing because water must be able to drain away safely. The rubber sealing washer supplied with some plugs should not normally be used for vaulted ceilings or soffits. Instead, Newton CDM Rope should be used around the fixing plug to create a compressed seal. Fixing alignment is also important because the fixings may later support battens or lining systems. Flat soffits are more restricted and require special consideration.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 be used on flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane should not be treated as a routine solution for flat soffits. Flat soffit installations are restricted because water can pond behind the membrane if there is not enough fall for drainage. The supplied guidance states that Newton CDM 508 should not be applied to flat soffits unless the soffit is at least 400mm narrower than the membrane being used, and only by very experienced contractors. The soffit must have a fall, the membrane must not sag, and the drainage path must prevent trapped water. If there is any uncertainty, technical advice should be sought before specifying this type of installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What substrates are suitable for Newton CDM 508 Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is suitable for use on walls made from concrete, brick and concrete block, and it can also be fixed to ICF construction where special longer fixing plugs are used. The substrate must be capable of receiving and holding the correct Newton CDM fixing plug securely. Weak, friable, crumbling or excessively uneven backgrounds should be repaired or addressed before installation begins. For floors, the 700g\/m² variant can be used over suitable concrete rafts or slabs, and within relevant system build-ups over Newton Fibran XPS 500-C where specified. The key requirement is that the substrate supports secure fixing, controlled drainage and correct membrane detailing.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How much surface preparation is needed before installing Newton CDM 508?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 usually requires less aggressive surface preparation than many direct-applied waterproofing systems, but the substrate still needs to be properly assessed and prepared. Timber, organic material, wallpaper, skirting boards and anything that could decay behind the system should be removed. Mould should be cleaned and sterilised, and rot should be dealt with by a specialist. Walls must be suitable for fixing, with severe depressions or unstable areas made good. Floors should be free from oil, debris, sharp protrusions and major irregularities. The surface does not need to be decorative-smooth, but it must allow the membrane, fixings, drainage and joints to perform correctly.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why is drainage important with Newton CDM 508 Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Drainage is essential because Newton CDM 508 Membrane does not hold back water pressure by itself. It forms part of a Type C drained waterproofing system, so water entering behind or beneath the membrane must be collected and removed safely. This normally involves drainage channels such as Newton CDM BaseDrain, inspection access, sump chambers, pumps and suitable discharge routes. Standing water should not remain beneath the membrane because it can encourage silt or lime scale deposits and reduce system performance. The drainage design must consider groundwater levels, expected water ingress, slab levels, pump capacity and maintenance access. Without suitable drainage, the membrane system cannot perform as intended.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fixing plugs are used with Newton CDM 508?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is fixed with suitable Newton CDM fixing plugs selected for the substrate and installation detail. Newton CDM MultiPlugs are commonly used for standard wall applications, while Newton CDM NuSeal Plugs may be used where a different sealing method is required. Some plugs include a soft rubber sealing washer that seals the fixing to the wall membrane, but overhead and vaulted applications normally require Newton CDM Rope instead of a washer. Fixings are installed through membrane studs into pre-drilled holes, then driven home so the plug sits flush within the stud. The fixing pattern should suit the finish system, such as battens, metal track or free-standing linings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fixing centres are used for Newton CDM 508 on walls?\u003c\/h3\u003e\n\u003cp\u003eA) Fixing centres for Newton CDM 508 depend on the internal finish being installed. Where timber battens are used, fixings are typically set at 600mm centres vertically and 400mm centres horizontally. For fixed metal track systems such as Gypliner, centres are generally 800mm vertically and 600mm horizontally. Barrel vaults require closer fixing, typically 300mm around the vault and 600mm down the vault. Free-standing timber frames, free-standing metal frames and free-standing block walls do not rely on the membrane fixings in the same way, so enough fixings should be used to keep the membrane neat, secure and reasonably tight, especially around corners, reveals and junctions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can battens be fixed into Newton CDM 508 fixing plugs?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, timber battens can be fixed into suitable Newton CDM fixing plugs without piercing the membrane, provided the correct screw size and length are used. Treated battens should be at least 25mm x 38mm, although 25mm x 50mm may provide better edge fixing for plasterboard. The fixing plug can accept 30mm of screw, typically using 5mm size 10 self-tapping screws. To work out screw length, add the batten thickness to the required embedment into the plug, without exceeding the 30mm depth accepted by the plug. Over-tightening or using screws that are too long can loosen the plug or risk damaging the waterproofing detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Newton CDM 508 be plastered or rendered directly?\u003c\/h3\u003e\n\u003cp\u003eA) Standard Newton CDM 508 Membrane is not designed to be plastered or rendered directly because it is not a meshed membrane and does not provide a suitable plaster or render key. On walls and vaulted soffits, it should be protected with suitable internal finishes, such as floor-supported dry-lining frames, timber battens with plasterboard, metal framing systems or other specified lining methods. Direct plastering or rendering applies to Newton 508 Mesh, not standard Newton CDM 508. This distinction is important because applying wet finishes directly to a non-meshed cavity drain membrane can result in poor adhesion and finish failure. The chosen finish should protect the membrane without puncturing it.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What internal finishes can be used over Newton CDM 508?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane can be finished with dry-lining systems, timber battens and plasterboard, free-standing timber or metal frames, fixed metal track systems, or block and brick walls built in front of the membrane where specified. On floors, suitable protection may include screed, tongue-and-groove chipboard, insulation with screed or chipboard above, timber floor systems or underfloor heating tray build-ups with screed. Any finish must be installed without puncturing the membrane unless the fixing method is designed through the Newton CDM plug system. The finish should also protect the membrane from UV light, physical damage, wear and fire exposure, as the membrane is not intended to remain exposed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are joints in Newton CDM 508 Membrane sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Joints in Newton CDM 508 Membrane are sealed using the appropriate Newton CDM accessories for the joint type. Flanged joints and stud-into-stud laps are normally sealed with Newton CDM Joint Tape, applied between the membrane surfaces before the joint is pressed firmly together. Newton CDM Rope is used where a flange seal is not possible, where a washer seal is unsuitable, or for irregular details. Newton CDM OverTape is used for repairs, abutting joints, reveal details, floor-to-drainage upstands and connections between floor and wall membranes. The membrane surfaces should be clean and dry before sealing, and a heat gun may be used carefully to assist adhesion in cold or damp conditions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should service penetrations through Newton CDM 508 be handled?\u003c\/h3\u003e\n\u003cp\u003eA) Service penetrations through Newton CDM 508 should be avoided wherever possible because they interrupt the continuous waterproof layer and create potential weak points. Where pipes, cables, conduits or other services must pass through the membrane, the membrane should be trimmed neatly and the detail sealed carefully using appropriate Newton products such as Newton CDM Rope, Newton CDM OverTape, Newton Pipe Collar or Newton Pipe Sleeve. In some cases, a patch of Damp Proof Course (DPC) may be used and sealed around its perimeter. For vaulted soffits and arches, services should ideally be re-sited to a vertical surface or grouped through a sealed sleeve detail where possible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 508 need protection after installation?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 must be protected after installation. Its long-term service life depends on being properly specified, installed and covered by suitable finishes so it remains isolated from UV light, physical damage, abrasion, fire exposure and wear. On walls, this normally means dry-lining, battens with plasterboard, free-standing frames or other approved lining systems. On floors, the membrane may be protected by screed, chipboard, insulation and floor finishes, depending on the system build-up. It should not be left exposed to long-term sunlight, trafficking or impact. Future work in the area should also avoid drilling or fixing through the membrane unless the detail has been approved.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 fire rated?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is classified as Euroclass E under BS EN 13501-1. This means it must be protected from fire by suitable surface finishes, in a similar way to plastic-based insulation materials. It should not be left exposed where fire performance is required from the finished construction. Where a project requires higher fire performance, Newton can provide fire-resistant membranes tested and classified to B-s2,d0, but that would be a separate specification decision. Fire strategy should be considered at design stage, especially in habitable basements, commercial spaces, escape routes or areas where building control requirements demand a particular fire-rated construction build-up.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 suitable for gas protection?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is not suitable for gas protection systems. It should not be relied upon for radon, methane or hydrocarbon gas protection. Where a project requires gas resistance as well as waterproofing, the specification should be changed to an appropriate Newton gas-rated system rather than using standard CDM 508. This is an important limitation because below-ground structures can be affected by ground gases as well as water ingress, and the two risks must be addressed correctly. The waterproofing design should be based on site investigation, ground conditions and project requirements. If gas protection is needed, the correct gas-rated membrane system should be specified from the outset.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What technical performance does Newton CDM 508 offer?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 is manufactured from HDPE and has an overall height of 8.0mm, with a stud height of 7.0mm and a membrane thickness of 0.45mm. It is available in 2.0m or 2.4m roll widths, 20m roll lengths and roll areas of 40m² or 48m². The membrane passes water tightness at 60kPa for 24hours to EN 1928, with tensile strength listed as 416N in the machine direction and 488N in the cross direction to BS 12311-2. It has resistance to static loading greater than 20kg, compressive strength of 180kN and a service temperature range from -40°C to +80°C.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Newton CDM 508 certified?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Newton CDM 508 Membrane is supported by BBA Agrément Certificate 22\/6357 and is declared under BS EN 13967:2012 + A1:2017 as a waterproofing sheet for damp proof sheets, Type V. It is also associated with BS 8102:2022 design guidance when used within a correctly specified Type C drained protection system. The supplied information states that Newton CDM 508 is guaranteed against deterioration for 30 years and has a stated life expectancy of at least 100 years, or equal to the design life of the building when correctly installed and protected. The waterproofing guarantee itself is normally provided by the specialist waterproofing contractor.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Newton CDM 508 Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 Membrane is not a standalone waterproofing product and has no ability to withstand water pressure by itself. It must be used as part of a correctly designed Type C drained protection system with suitable drainage, inspection access, pumping and maintenance. The 500g\/m² variants must not be used on floors, and standard CDM 508 must not be used for gas protection. Flat soffit applications are heavily restricted and should only be considered by very experienced contractors where drainage and fall are suitable. The membrane must also be protected from UV light, fire, physical damage and puncturing, and future alterations should be checked before any fixings are made.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Newton CDM 508 require maintenance?\u003c\/h3\u003e\n\u003cp\u003eA) Newton CDM 508 itself requires little maintenance once installed and protected, but the full Newton CDM System requires regular inspection and servicing of drainage and pumping components. Sump pumps, drainage channels, discharge pipework, inspection ports and associated components should be checked and cleaned by a competent person, typically at least once per year. Maintenance may include removing debris from sump chambers, checking pump impellers, testing pump operation, inspecting discharge routes, flushing Newton CDM BaseDrain or CDM FloorDrain and checking electrical connections. Battery back-up should also be considered where pump failure during a power cut could create a flood risk. The membrane should not be pierced or altered without specialist advice.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_TECH.pdf?v=1782304823\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_TECH.pdf?v=1782304823\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_TECH_160x160.jpg?v=1782304714\"\u003e\u003c\/a\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_TECH.pdf?v=1782304823\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM Installation Manual\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL_e3b98bd6-c93b-4c4f-9d55-6ae56323779d_160x160.jpg?v=1779708766\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_DOP.pdf?6055606608163339096\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_DOP.pdf?6055606608163339096\" target=\"_blank\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_DEC_OF_PERFORMANCE_160x160.jpg?v=1613707210\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_BBA_a603ffab-9bda-4a07-98a4-7e1502b48e3d.pdf?v=1787052590\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\n\u003cdiv\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_BBA_a603ffab-9bda-4a07-98a4-7e1502b48e3d.pdf?v=1787052590\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_BBA_160x160.jpg?v=1787052658\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_508_BBA_a603ffab-9bda-4a07-98a4-7e1502b48e3d.pdf?v=1787052590\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"John Newton \u0026 Co. Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²) \/ Standard 500g\/m²","offer_id":45062654918934,"sku":"NM1-5-40","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.0M x (L) 20M (40M²) \/ Heavy Duty 700g\/m²","offer_id":58124872483200,"sku":"NM1-7-40","price":139.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.47M x (L) 20M (48M²) \/ Standard 500g\/m²","offer_id":8163107930211,"sku":"NM1-5-48","price":145.0,"currency_code":"GBP","in_stock":false},{"title":"(W) 2.47M x (L) 20M (48M²) \/ Heavy Duty 700g\/m²","offer_id":58124872515968,"sku":"NM1-7-48","price":159.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508-cavity-drain-waterproof-membrane-8mm-stud-w-2-0m-x-l-20m-40m-standard-500g-m-basement-membranes-339.webp?v=1787054828"},{"product_id":"basement-waterproof-tanking-membrane-cv8","title":"Platinum CV8 - Cavity Drain Waterproof Membrane (8mm Stud)","description":"\u003cp\u003ePlatinum CV8 Cavity Drain Waterproof Membrane is a high-quality, clear HDPE membrane with a nominal 8mm studded profile, designed for Type C drained protection waterproofing and damp-proofing applications.\u003c\/p\u003e\n\u003cp\u003eSuitable for walls, floors, vaults, tunnels, basements, cellars, retaining structures and other areas above or below ground level, Platinum CV8 creates a controlled cavity between the substrate and the internal finish. Moisture and water entering the structure can then be collected and directed to a suitable drainage channel, gravity outlet or sump-and-pump arrangement. The clear membrane makes the background easier to see while setting out and fixing with \u003cstrong\u003ePlatinum Waterseal Brick Plugs\u003c\/strong\u003e, while the sheet can be cut accurately on site with a sharp blade.\u003c\/p\u003e\n\u003cp\u003eWhen Platinum CV8 is incorporated into a correctly designed, installed and maintained Type C cavity drain membrane system, it can contribute to the dry internal conditions required for below-ground rooms, including systems designed to achieve a Grade 3 environment under BS 8102:2022. The membrane is waterproof, salt inhibiting, root resistant and contaminant resistant, with a stated life expectancy equivalent to the lifetime of the structure when stored and installed in accordance with the product recommendations.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Features of Platinum CV8 Cavity Drain Membrane\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ Nominal 8mm studded cavity drain membrane for managing dampness, water ingress and salts within Type C waterproofing systems.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for walls, floors, vaults, tunnels and structures above or below ground level, including demanding basement and cellar applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Clear HDPE membrane allows easier substrate visibility, positioning and fixing with \u003cstrong\u003ePlatinum Waterseal Brick Plugs\u003c\/strong\u003e.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable as a component within systems designed in line with BS 8102:2022 and capable of contributing to a Grade 3 environment when the complete system is correctly specified, installed, drained and maintained.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Waterproof, salt inhibiting, root resistant and contaminant resistant, with low- and high-temperature tolerance and a stated life expectancy equivalent to the lifetime of the structure.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e8mm Cavity Drain Membrane For Type C Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 Cavity Drain Waterproof Membrane is a high-quality studded membrane developed for Type C waterproofing and damp-proofing applications in both above-ground and below-ground structures. It can be installed on walls, floors, vaults, tunnels, basements, cellars and retaining walls, where its studded profile forms a defined cavity between the existing structure and the new internal finish.\u003c\/p\u003e\n\u003cp\u003eUnlike a bonded coating that attempts to resist water directly at the face of the substrate, a Type C system accepts that water may enter the structure and provides a controlled route behind the membrane. Platinum CV8 therefore forms one part of a managed waterproofing system in which water is collected, directed and safely discharged. This makes it a practical choice for structural waterproofing, remedial damp proofing and refurbishment projects where dependable long-term moisture management is required.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eControlled Drainage For Damp, Wet And Salt-Contaminated Structures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe stud profile creates a continuous drainage cavity that separates damp or contaminated masonry from the usable internal space. Within a properly designed system, moisture and water entering behind the membrane can move towards \u003cstrong\u003ePlatinum AquaTrack Drainage Channel\u003c\/strong\u003e, cross-floor drainage, a gravity outlet or a \u003cstrong\u003ePlatinum AquaSump sump-and-pump system\u003c\/strong\u003e, as required by the site design.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV8 is particularly useful in underground rooms, damp walls, vaulted spaces and cellar conversions affected by water ingress, residual dampness or salt contamination. Managing moisture within an accessible drained cavity, instead of trapping it in the wall or floor build-up, supports a more maintainable and reliable internal waterproofing strategy.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eClear Membrane Design For Practical Site Positioning\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 is produced as a clear membrane so installers can see the background while positioning the sheet, setting out fixing lines and locating suitable fixing points. This assists accurate installation with \u003cstrong\u003ePlatinum Waterseal Brick Plugs\u003c\/strong\u003e, especially where plug lines must correspond with battens, dry-lining supports or other finishing components.\u003c\/p\u003e\n\u003cp\u003eThe membrane can be trimmed around wall-to-floor junctions, reveals, internal and external corners, columns, pipework and other site details using a sharp blade. Because it is mechanically installed and does not rely on a wet coating curing, the membrane itself introduces no drying period before correctly detailed follow-on work can begin. Screeds, plasters, adhesives and decorative finishes must still be allowed to dry in accordance with their own requirements.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable Protection Against Water, Salts And Contaminants\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 is waterproof, salt inhibiting, root resistant and contaminant resistant. These characteristics make it suitable for challenging environments in which existing masonry may retain moisture, hygroscopic salts or ground-related contamination that could damage plaster, plasterboard, flooring or decorative finishes applied directly to the substrate.\u003c\/p\u003e\n\u003cp\u003eThe cavity drain approach normally requires less aggressive preparation than a bonded tanking system. Loose, weak or unsuitable material must still be removed and defective areas made good, but wholesale removal of sound backgrounds is often unnecessary. This can be advantageous in refurbishment work, older buildings and structures where unnecessary disturbance to fragile or historic masonry should be minimised.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned For BS 8102:2022 Type C Waterproofing Systems\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 is intended for use as a component within Type C drained protection systems designed in accordance with BS 8102:2022, the current British Standard code of practice for protecting below-ground structures against water ingress. The membrane forms the internal cavity, but the waterproofing design must also address the structure, water risk, drainage capacity, discharge route, inspection access, pump provision, redundancy, alarms, maintenance and the intended use of the finished space.\u003c\/p\u003e\n\u003cp\u003eWhere a dry habitable basement or cellar is required, the complete waterproofing system may be designed to achieve a Grade 3 internal environment. That outcome is provided by the correctly designed and maintained system as a whole; it is not created by the membrane sheet in isolation. Projects subject to building warranty requirements should be agreed with the waterproofing design specialist, building control body and warranty provider before work begins.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eLong-Term Waterproofing For Basements And Refurbishment Projects\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen stored, installed, protected and maintained in accordance with the applicable technical recommendations, Platinum CV8 has a stated life expectancy equivalent to the lifetime of the structure. Its clear HDPE construction, drainage capacity and resistance to common damp-related contaminants make it suitable for both remedial work and complete below-ground waterproofing schemes.\u003c\/p\u003e\n\u003cp\u003eLong-term performance depends on more than the membrane itself. Joints, fixing points, penetrations and transitions must remain sealed, the membrane must be protected from damage, and all AquaTrack channels, outlets, sump chambers, pumps, alarms and access ports must remain serviceable. With these elements correctly designed and maintained, Platinum CV8 can help convert wet or unusable areas into dry, practical internal spaces.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-601_1024x1024.webp?v=1783081852\" alt=\"Platinum CV8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cstrong\u003e\u003cem\u003e\u003cbr\u003ePlatinum CV8 Membrane installed on basement walls, with sealed joints and brick plug fixings creating a controlled cavity to manage moisture and direct water towards the AquaTrack drainage system.\u003c\/em\u003e\u003c\/strong\u003e\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\n\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8mm Cavity Drainage Capacity: \u003c\/strong\u003eThe nominal 8mm studded profile creates a defined void between the substrate and the internal finish, allowing water and moisture to move behind the membrane towards the designed drainage route.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable For Type C Waterproofing Systems: \u003c\/strong\u003ePlatinum CV8 is designed for use as part of a drained protection system in line with BS 8102:2022. With suitable drainage, inspection access, discharge and pumping where required, it can contribute to a dry internal environment below ground.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupports Grade 3 System Designs: \u003c\/strong\u003eWhen incorporated into a correctly designed, installed and maintained cavity drain system, Platinum CV8 can contribute to the Grade 3 internal conditions normally specified for habitable below-ground spaces where water penetration and dampness are not acceptable.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable For Professional Waterproofing Specifications:\u003c\/strong\u003e Its consistent studded construction, clear format and published technical performance make Platinum CV8 suitable for professional basement waterproofing and structural waterproofing designs, subject to the project specification and any warranty requirements.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong-Term Building Protection: \u003c\/strong\u003eThe stated life expectancy is equivalent to the lifetime of the structure when the membrane is stored and installed in accordance with the recommendations and protected from damage in service.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproof And Salt Inhibiting:\u003c\/strong\u003e The membrane separates internal finishes from damp, moisture-affected and salt-contaminated backgrounds, helping reduce the risk of salt migration, staining and deterioration of the new internal build-up.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRoot And Contaminant Resistant: \u003c\/strong\u003ePlatinum CV8 resists roots and contaminants, supporting its use in earth-retaining and below-ground environments exposed to ground moisture, soil-related contamination and variable substrate conditions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Surface Preparation:\u003c\/strong\u003e The membrane does not require the extensive keyed or fully bonded surface preparation associated with many direct-applied waterproofing systems. Unsound material, sharp projections and unstable backgrounds must still be removed or repaired.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Installation With No Membrane Curing Time: \u003c\/strong\u003ePlatinum CV8 is mechanically fixed or loose-laid, depending on the application, and does not need to cure before the next correctly detailed stage can begin.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eClear Membrane For Easier Fixing: \u003c\/strong\u003eThe transparent sheet allows the installer to see the substrate during positioning, alignment, drilling and plug installation.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Cutting And Detailing: \u003c\/strong\u003eThe membrane can be trimmed with a sharp blade around corners, reveals, pipes, columns, protrusions and irregular areas without specialist cutting equipment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWide Working Temperature Range: \u003c\/strong\u003ePublished technical data gives a working temperature range of -50°C to +80°C, allowing the membrane to tolerate varied site and service conditions once properly installed and protected.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing: \u003c\/strong\u003eUsed on earth-retained walls and floors as part of a Type C system that collects water from behind the membrane and directs it to AquaTrack drainage, a gravity outlet or a sump chamber.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions: \u003c\/strong\u003eSuitable for converting damp or unused cellars into dry internal spaces for storage, utility use, work or habitation, subject to the complete waterproofing, ventilation and building design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRetaining Walls:\u003c\/strong\u003e Separates new internal finishes from damp, salt-contaminated or water-bearing retaining walls while preserving a drainage route within the cavity.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFloor Waterproofing: \u003c\/strong\u003eCan be loose-laid stud-side down on suitable prepared floors, with overlaps sealed and the membrane connected to the designed perimeter or cross-floor drainage arrangement.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaults And Tunnels: \u003c\/strong\u003eSuitable for vaulted, arched and tunnel structures where the membrane can be held tightly to the substrate and water can drain continuously to a designed collection point.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAbove-Ground Damp Proofing:\u003c\/strong\u003e May be used where internal walls are affected by residual dampness, penetrating damp, salts or defective backgrounds, provided avoidable moisture sources are addressed first wherever practical.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBelow-Ground Waterproofing:\u003c\/strong\u003e Suitable for structures at risk of groundwater or water ingress where a managed cavity drain system is required rather than a simple surface coating.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefurbishment Of Damp Properties: \u003c\/strong\u003eUseful where existing walls or floors are damp, contaminated or unsuitable for direct finishes and where minimal disturbance to the existing structure is preferred.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDomestic And Commercial Projects: \u003c\/strong\u003eApplicable to residential basements, commercial basements, plant rooms, stores, underground corridors and other areas requiring managed water removal.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProjects Requiring Minimal Structural Disturbance: \u003c\/strong\u003eThe mechanically fixed membrane can reduce the need for aggressive preparation of sound existing surfaces, which may be beneficial in older or sensitive buildings.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Design: \u003c\/strong\u003ePlatinum CV8 is suitable for inclusion within a Type C drained cavity waterproofing design. BS 8102:2022 is a code of practice for the overall waterproofing design; it is not a stand-alone product approval or certificate.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 Internal Environment: \u003c\/strong\u003eA complete system incorporating Platinum CV8 may be designed to achieve Grade 3 conditions for habitable below-ground spaces. The required grade is achieved through the combined performance of the structure, membrane, sealed details, drainage, discharge, pumps where necessary, ventilation, inspection and maintenance provisions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNHBC Chapter 5.4: \u003c\/strong\u003eWhere an NHBC warranty or another structural warranty applies, the proposed complete waterproofing system, design documentation, product evidence and installer competency should be submitted for project-specific acceptance. A reference to NHBC Chapter 5.4 must not be treated as automatic product approval.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePublished Test And Classification Data:\u003c\/strong\u003e The technical information lists water-tightness, tensile, static-loading, compressive-strength and reaction-to-fire results against the standards shown in the tables below. EN 13967:2012+A1:2017 is identified as the harmonised technical specification for the listed essential characteristics.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Life: \u003c\/strong\u003eThe stated life expectancy is the lifetime of the structure when the membrane is stored and installed in accordance with the technical recommendations and remains protected within a correctly functioning system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 works by maintaining a studded cavity between the damp or water-bearing substrate and the new internal finish. Water entering the structure is allowed to move within this cavity towards a suitable collection and discharge point instead of becoming trapped behind plasterboard, plaster, screed or flooring. This managed-drainage principle is the defining feature of a Type C system and is particularly valuable below ground, where groundwater level and hydrostatic conditions may vary over time.\u003c\/p\u003e\n\u003cp\u003eThe nominal 8mm profile provides a useful balance between drainage capacity and internal build-up depth. It offers greater cavity space than a low-profile damp-proof membrane, supporting structural waterproofing applications without the greater floor or wall depth associated with much deeper-studded membranes. It is therefore well suited to basement waterproofing, cellar conversion, retaining-wall and floor-waterproofing projects.\u003c\/p\u003e\n\u003cp\u003eIts waterproof, salt-inhibiting, root-resistant and contaminant-resistant properties help protect internal finishes from challenging substrates. Damp masonry frequently contains soluble salts and other contamination capable of damaging directly applied finishes. By separating the finish from the substrate, Platinum CV8 can reduce the risk of salt migration, blistering, staining and damp-related deterioration when the membrane, joints and drainage system are detailed correctly.\u003c\/p\u003e\n\u003cp\u003eInstallation is practical and comparatively fast. The membrane can be fitted with limited preparation to otherwise suitable walls, cut with a sharp blade and fixed using \u003cstrong\u003ePlatinum Waterseal Brick Plugs\u003c\/strong\u003e. Because the membrane does not dry or cure, follow-on work can proceed once fixing, sealing, drainage connections and inspection are complete. Any wet-applied repair materials, screeds, plasters or adhesives used elsewhere in the build-up must still reach the required condition before covering or decoration.\u003c\/p\u003e\n\u003cp\u003eFor the property owner, the principal benefit is the ability to turn damp or wet areas into dry, usable spaces when Platinum CV8 is used within a suitable waterproofing design. Performance depends on the entire system: water must be able to enter the drainage cavity without obstruction, reach the drainage channel, leave through a safe outlet or pump arrangement, and continue to do so throughout the life of the installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm8-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-wykamol-cm8-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-table th,\n  .pc-wykamol-cm8-table td {\n    border: 5px solid #fff;\n    padding: 8px 12px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm8-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-wykamol-cm8-table .pc-section-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-table .pc-column-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 400;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-table .pc-data-row td {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm8-table td {\n    text-align: left;\n  }\n\n  .pc-wykamol-cm8-table .pc-centre {\n    text-align: center;\n  }\n\n  .pc-wykamol-cm8-table .pc-bold {\n    font-weight: 700;\n 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style=\"width: 20%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth colspan=\"2\"\u003e\u003cstrong\u003eFeatures\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eResult\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eUnit Weight\u003c\/td\u003e\n\u003ctd\u003e0.5 Kg\/m²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd\u003e0.45 mm\u003c\/td\u003e\n\u003ctd\u003eEN 149-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eStud Height\u003c\/td\u003e\n\u003ctd\u003e7 mm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eColour\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eWater Tightness 60 kPa; 24h\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd\u003e126°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eTensile Strength MD\u003c\/td\u003e\n\u003ctd\u003e416 N\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eTensile Strength CD\u003c\/td\u003e\n\u003ctd\u003e488 N\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eResistance To Static Loading\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;20 Kg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eCompressive Strength 1\u003c\/td\u003e\n\u003ctd\u003e180 kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eReaction To Fire\u003c\/td\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eType Of Application\u003c\/td\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd\u003eLifetime of Structure\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"4\"\u003eEssential Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003e\u003cstrong\u003eEssential Characteristics\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003ePerformance\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eTest Standard\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003eHarmonised Technical Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eWater Tightness, 60 kPa; 24h\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003ePass\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 1928\u003c\/td\u003e\n\u003ctd class=\"pc-spec-cell\" rowspan=\"10\"\u003eEN 13967: 2012 + A1 : 2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eResistance To Tearing\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12310-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eElongation (5%)\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eCompressive Creep (Resistance To Static Load)\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 13967 Annex B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eImpact Resistance\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN12691-2 Method A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eDurability Against Ageing\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eDurability Against Chemicals\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN1926 \/ EN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eFire Resistance\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eE\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eJoint Tensile Shear Resistance\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12317-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eCompressive Strength\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003e180 kN\/m²\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eInstallation\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-platinum-cv8-ancillary-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-platinum-cv8-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-platinum-cv8-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-platinum-cv8-ancillary-table th,\n  .pc-platinum-cv8-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-product-cell,\n  .pc-platinum-cv8-ancillary-table .pc-product-cell a {\n    color: #111;\n    font-weight: 700;\n    text-align: left;\n  }\n\n  .pc-platinum-cv8-ancillary-table .pc-product-cell a {\n    text-decoration: underline;\n    text-underline-offset: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-platinum-cv8-ancillary-table-swipe {\n      display: block;\n    }\n\n    .pc-platinum-cv8-ancillary-table {\n      min-width: 720px;\n      font-size: 14px;\n    }\n\n    .pc-platinum-cv8-ancillary-table th,\n    .pc-platinum-cv8-ancillary-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-platinum-cv8-ancillary-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-platinum-cv8-ancillary-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-platinum-cv8-ancillary-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-platinum-cv8-ancillary-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-platinum-cv8-ancillary-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 74%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"2\" scope=\"colgroup\"\u003ePlatinum CV8 Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-waterseal-brick-plugs-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Waterseal Brick Plugs\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eHeavy-duty 10mm x 60mm membrane fixings used to secure Platinum CV8 to suitable brick, concrete, stone and masonry substrates. Each plug is supplied with a soft rubber sealing washer that compresses against the membrane at the fixing point. The central hole accepts a 5mm No.10 screw for battens, ply, wall ties and suitable dry-lining supports without drilling a separate penetration through the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\n\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-waterseal-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Waterseal Rope\u003c\/a\u003e (for separately sealed plug details)\u003c\/th\u003e\n\u003ctd\u003eFlexible butyl rope used around the neck of a Waterseal Plug where the standard sealing washer is omitted or cannot seat evenly, including selected overhead, curved, vaulted or irregular details. It must be compressed sufficiently to form a continuous watertight seal around the fixing point.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-joint-sealing-tape-double-sided-butyl-cavity-membrane\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Joint Sealing Membrane Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eDouble-sided butyl tape used within membrane overlaps, flanges and compatible stud-to-stud laps to join adjacent CV8 sheets into one continuous waterproof layer. It is installed inside the overlap rather than used as a surface-covering tape.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-waterseal-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Waterseal Rope\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePermanently flexible butyl sealing bead used around fixing plugs, stud-to-stud joints, pipework, services, protrusions, vault details and irregular three-dimensional areas where a flat tape cannot form a complete seal.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-corner-tape-butyl-membrane-jointing-tape\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Corner Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWide face-applied butyl tape used at wall-to-floor transitions, corners, repairs, protrusions, patches and complex details requiring a broader surface seal. It may also be used as an additional over-seal where the design anticipates severe water ingress.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-mesh-tape-plaster-membrane-jointing-tape\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Mesh Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eFleece-faced self-adhesive tape that may provide additional support at selected mitred, shaped or finishing details. It is not a substitute for the primary butyl waterproof joint and should be used only where the specified detail and finish require it.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003ePipe Collar, Pipe Sleeve Or Proprietary Penetration Seal\u003c\/th\u003e\n\u003ctd\u003ePurpose-made accessory for forming a controlled seal where a pipe, cable group, duct or conduit must pass through the membrane. The collar or sleeve must be compatible with the service material and fully sealed to the CV8 sheet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-drainage-channel\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Drainage Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePerforated PVC perimeter channel installed at the vulnerable wall-to-floor junction to collect water from behind the wall membrane and direct it towards the designed gravity outlet or sump chamber. The channel includes an upstand for integration at the perimeter.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-floor-drain-channel\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Floor Drain Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePerforated cross-floor channel without an upstand, used to link perimeter drainage to a central sump or to maintain drainage across details such as door thresholds where a standard upstand would obstruct the build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-connector-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Connector Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eStraight connector used to join AquaTrack channel sections end to end and maintain continuity along a drainage run.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-swept-corner-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Swept Corner Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePreformed corner component for changes of direction. Its swept arrangement supports water flow and easier maintenance, while its push-out detail can accept an AquaTrack Inspection Port.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-t-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack T-Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eThree-way connector used where channel routes meet, particularly when joining perimeter AquaTrack to cross-floor AquaTrack Floor Drain and directing water towards a centrally located sump. Includes a push-out for an Inspection Port.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-end-cap\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Universal End Cap\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eDual-purpose channel termination. It can blank off the end of a run or, by using the push-out, provide a reduced outlet for connection to suitable 40mm plumbing pipe leading towards a sump or discharge detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-inspection-port\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Inspection Port\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eAccess component fitted to compatible corner and T-piece push-outs so the drainage channel can be inspected, flushed and cleared. Inspection access should be provided at changes of direction and wherever required by the drainage design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-in-line-access-ports\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack In-Line Access Port\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePreformed access port incorporated into a short channel section and connected with AquaTrack Connector Pieces. Used to provide cleaning and inspection access along straight or extended drainage runs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-110mm-drainage-channel-outlet\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack 110mm Drainage Channel Outlet\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eT-section outlet used to connect AquaTrack Drainage Channel or Floor Drain Channel to standard 110mm round pipe. Includes a push-out for an AquaTrack Inspection Port.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-drainage-connector\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack 90° In-Line Drainage Connector\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePreformed level-change connector fitted to a short section of channel. It connects to suitable 40mm pipe from the underside of the channel where the design needs to transfer water between levels.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaSump Basement Sump And Pump Systems\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSump chambers and pump stations used to collect water from AquaTrack and remove it mechanically where a dependable gravity discharge is not available. Pump number, duty, head, discharge distance and redundancy must suit the design water flow and risk assessment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eGullies And Gravity Drainage Connections\u003c\/th\u003e\n\u003ctd\u003eSuitable designed discharge points used where site levels allow water to leave the cavity drain system by gravity. The outlet must remain capable of accepting the anticipated flow without backing up into the system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eDischarge Pipework And Non-Return Components\u003c\/th\u003e\n\u003ctd\u003eCorrectly sized pipework, valves and fittings that carry pumped water from the sump to the approved discharge point while preventing unwanted return flow.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\n\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aqualarm-9v-sump-pump-alarm\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaAlarm 9V\u003c\/a\u003e And \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aqualarm-wireless-sump-pump-alarm-110db\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaAlarm Wireless\u003c\/a\u003e\n\u003c\/th\u003e\n\u003ctd\u003eHigh-water-level alarms used to warn the building user if water rises above the normal operating level in the sump chamber, providing early notice of a pump, discharge or power problem.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003ePump Battery Back-Up System\u003c\/th\u003e\n\u003ctd\u003eBack-up power provision used where the waterproofed area relies on mechanical pumping and the risk assessment requires continued pump operation during a mains failure. Capacity must be selected for the pump load, likely outage duration and expected water ingress.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aqualarm-elite-telemetry-sump-pump-high-water-level-alarm\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaAlarm Elite Telemetry\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eEnhanced monitoring and notification option for projects requiring remote warning of high water, power interruption, servicing needs or other defined system conditions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton Condensation Strip\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eOptional edge detail used where a deep floor build-up prevents the perimeter channel from collecting condensation running down the room-facing side of the wall membrane. It maintains a route from the membrane face to the drainage zone.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti-Lime Sealer\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eConcentrated anti-lime treatment for suitable old or new concrete surfaces. It helps reduce free-lime leaching and dust that could otherwise create deposits in the cavity or AquaTrack channels. Apply in accordance with the separate product instructions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/dry-rot-masonry-treatment-lignum-pro-m50\" rel=\"noopener\" target=\"_blank\"\u003eLignum Pro M50 Masonry Biocide\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eBiocidal surface treatment used after brushing away visible mould or masonry fungal contamination and before the membrane is installed. Dry rot requires a separate detailed assessment rather than simple concealment behind the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/dampsolve-damp-proof-dpc-cream\" rel=\"noopener\" target=\"_blank\"\u003eDampSolve Damp Proof DPC Cream\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eInjection cream used where an appropriate above-ground damp-proof course is required to control avoidable moisture movement before CV8 is installed. It is not a substitute for the Type C drainage system below ground.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/fillet-seal-mortar\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Fillet Seal Mortar\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eRapid-curing, non-shrink cement-based mortar used to make good, re-profile or form suitable fillet details at wall-to-floor and wall-to-wall junctions where required by the preparation or combined waterproofing design. Allow repair work to reach the required condition before covering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" rel=\"noopener\" target=\"_blank\"\u003eRenderproof Waterproofing Additive\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWaterproofing and salt-inhibiting additive for suitable sand-and-cement repair mixes used to level or make good backgrounds before installing CV8. All new work must be allowed to dry thoroughly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003eDamp Proof Course Membrane\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSheet DPC used where waterproofing or damp-proofing continuity is required through an internal wall, reveal or floor junction. The DPC can be linked to CV8 with Platinum Joint Sealing Membrane Tape and over-sealed with Platinum Corner Tape where the design requires it.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eWykamol High Load Closed Cell Insulation\u003c\/th\u003e\n\u003ctd\u003eHigh-load insulating drainage spacer for suitable floor build-ups. Its grooved face supports drainage beneath the floor finish while providing thermal insulation and load-bearing support. Use only as part of a compatible specified build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003e50mm closed-cell XPS thermal spacer with a grooved drainage face and shiplap edges, used in compatible basement floor build-ups requiring insulation, drainage and high compressive resistance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 should be installed by competent operatives who understand damp proofing, structural waterproofing and Type C drained protection. The sheet is straightforward to cut and fix, but the finished system depends on correct assessment, preparation, fixing, jointing, drainage, discharge, protection and maintenance access. Platinum CV8 must not be treated as a stand-alone barrier capable of resisting hydrostatic pressure without a functioning drainage route.\u003c\/p\u003e\n\u003cp\u003eA waterproofing design specialist should be involved where required by BS 8102:2022, the complexity of the work, the intended use of the space, building-control requirements or the structural warranty provider. Habitable basements, high water-risk sites, pumped systems, combined waterproofing designs and projects with complex penetrations or level changes require particularly careful coordination.\u003c\/p\u003e\n\u003cp\u003eFollow normal site precautions. Although the membrane itself is not expected to create a specific hazard during normal handling, drilling, cutting, hammering, heat-gun use and work in confined below-ground spaces introduce their own risks. Basements and cellars may have restricted lighting, ventilation, access and escape routes. Complete the appropriate risk assessments, confirm safe access and provide adequate lighting and ventilation before starting.\u003c\/p\u003e\n\u003cp\u003eWear suitable PPE for the work, which may include gloves, hard hat, eye protection, high-visibility clothing, safety footwear, hearing protection and respiratory protection when drilling dusty masonry. Follow the safety information for every chemical preparation, mortar, biocide, sealer, adhesive and ancillary product used with the membrane.\u003c\/p\u003e\n\u003cp\u003eBefore drilling, scan for concealed electrical cables, water pipes, gas services and other hazards. Plan all fixing lines, membrane joints, AquaTrack routes, sump positions, service entries and final finishes in advance. Drill through the centre of the selected membrane stud and control dust so that excessive debris does not fall into the cavity or drainage channel. Use correctly erected access equipment for high walls, vaults and soffits.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 is an 8mm-class cavity drain membrane for Type C waterproofing and damp-proofing systems. Type C construction accepts that some water may pass through the retaining structure and manages it on the inside using a cavity, collection channels and a safe discharge. Where gravity drainage is not dependable, the system normally incorporates a sump chamber and one or more pumps.\u003c\/p\u003e\n\u003cp\u003eThe internal cavity relieves and controls water rather than attempting to hold it back at the inner face. For this reason, the design must create an uninterrupted route from every potential entry point to the drainage system. The CV8 cavity, wall-to-floor detail, Platinum AquaTrack, any cross-floor channels, outlets, sump chamber, pump and discharge pipework must work as one coordinated arrangement.\u003c\/p\u003e\n\u003cp\u003eBase the waterproofing design on BS 8102:2022, the water-risk assessment, ground conditions, structure, anticipated water pressure, intended use and required internal environment. A Grade 3 environment may be required for habitable below-ground rooms, but Grade 3 performance is a result of the complete system. It depends on appropriate design, workmanship, drainage capacity, pump provision, ventilation, maintenance and protection from later damage.\u003c\/p\u003e\n\u003cp\u003eIf drainage channels become blocked, water entry exceeds the design capacity, the gravity outlet backs up, a pump fails or mains power is lost, the waterproofed space may be at risk. Inspection ports, accessible sump covers, high-water alarms, pump redundancy and battery back-up should therefore be considered at design stage rather than added after the installation is concealed.\u003c\/p\u003e\n\u003cp\u003eFor below-ground and earth-retaining structures, the designer must also determine whether combined waterproofing protection is necessary. Depending on the risk and warranty requirements, this may combine Type C with a compatible Type A barrier or Type B water-resistant structure. Platinum CV8 can form the internal drained protection element, but the complete specification must be selected and approved for the particular project.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 can be installed on suitable walls, floors, vaults, tunnels and other structures above or below ground level. Typical backgrounds include concrete, brickwork, blockwork, stone, masonry, sound render and sound screed, provided the construction is stable, capable of accepting the specified fixings and suitable for the intended drainage and finishing build-up.\u003c\/p\u003e\n\u003cp\u003eFor new floor construction, concrete bases should be laid in accordance with BS 8204-1:2003+A1:2009. The CV8 technical information calls for a flat surface with no more than 5mm deviation beneath a 3000mm straightedge. Controlled falls, local drainage details and the structural design must also be coordinated with the waterproofing layout.\u003c\/p\u003e\n\u003cp\u003eAssess existing walls and floors before installation. Remove or repair unsound plaster, weak render, defective screed, friable masonry, sharp projections, severe depressions and unstable areas. CV8 generally needs less preparation than a fully bonded tanking product, but the background must still hold the fixings, allow the sheet to lie without damaging stress points and permit water to reach the drainage system without obstruction.\u003c\/p\u003e\n\u003cp\u003eDo not install over unassessed structural movement, active collapse, contaminated surfaces requiring specialist remediation or hazardous materials. Structural cracks, failed joints and active water flows may require engineered repair or water-stopping measures before the Type C system is completed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRemove unsound plaster, render and screed, then level or re-profile the substrate where required. Platinum Fillet Seal Mortar or a suitable 3:1 sand-and-cement repair mix incorporating Renderproof Waterproofing Additive may be used for appropriate repairs. Follow the separate product instructions and allow new cementitious work to dry thoroughly before installing the membrane or applying butyl tapes.\u003c\/p\u003e\n\u003cp\u003eBrush away visible mould and masonry fungal contamination, then treat the prepared surface with Lignum Pro M50 Masonry Biocide in accordance with its current technical and safety information. If dry rot is present, stop and arrange a detailed assessment of the moisture source, affected timber and adjoining construction. A membrane must not be used to conceal unresolved timber decay.\u003c\/p\u003e\n\u003cp\u003eAbove ground level, repair avoidable sources of moisture wherever practical. Check rainwater goods, external ground levels, pointing, render, plumbing, roofs, flashings and other defects. Where rising damp control is appropriate, DampSolve Damp Proof DPC Cream may be installed to the correct specification before CV8. This reduces unnecessary moisture loading and helps protect surrounding masonry and timber.\u003c\/p\u003e\n\u003cp\u003eTreat concrete walls and slabs with Wykamol Anti-Lime Sealer where new concrete, free lime, efflorescence or dusting could affect the cavity drain system. Lime carried by water can harden within drainage routes and increase maintenance or blockage risk. Prepare, dilute, apply and cure Anti-Lime Sealer strictly in accordance with its own instructions; do not apply it to pooled water or unsuitable surfaces.\u003c\/p\u003e\n\u003cp\u003eClean the final background and remove loose debris before closing the cavity. Pay particular attention to the wall-to-floor junction, channel troughs, sumps and access details. Construction debris left behind the membrane can restrict drainage, contaminate the channel or make later flushing more difficult.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-421_1024x1024.webp?v=1783082714\" alt=\"Platinum CV8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cbr\u003eAnti-lime sealer being applied to prepared concrete before installation of Platinum CV8 Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTypical installation tools include an SDS hammer drill, correctly sized masonry bits, rubber mallet or club hammer, sharp utility knife with spare blades, tape measure, long level, straightedge, marker, clean rags, soft roller or firm hand-pressure tool for tapes, and a suitable vacuum or dust-control arrangement. A laser level is useful for long runs, plug lines, channel setting-out and floor levels. Provide suitable task lighting and access equipment for basements, high walls and vaults.\u003c\/p\u003e\n\u003cp\u003eA controlled hot-air gun may be useful for removing light surface moisture and improving butyl-tape adhesion in cold conditions, but it must not overheat, melt or distort the HDPE membrane. Open flames must never be used. All surfaces receiving tape or rope must be clean, dry and free from dust, grease, condensation and loose material.\u003c\/p\u003e\n\u003cp\u003eThe principal system components normally include Platinum Waterseal Brick Plugs, Platinum Joint Sealing Membrane Tape, Platinum Waterseal Rope, Platinum Corner Tape, suitable patching materials, AquaTrack perimeter and floor channels, the required AquaTrack connectors and outlets, inspection or in-line access ports, and a correctly selected gravity outlet or AquaSump system. Where pumping is essential, also provide the specified discharge components, high-water alarm and any required secondary pump, back-up power or telemetry.\u003c\/p\u003e\n\u003cp\u003eDo not begin fixing the membrane until all critical components are available and the installation sequence has been agreed. Leaving unfinished joints, missing drainage connections or inaccessible temporary details increases the chance of contamination and damage before the system is closed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 must form part of a drainage-based waterproofing system. The cavity behind the membrane requires a clear and maintainable route to a safe discharge; without it, water can accumulate and the system cannot perform as intended. Platinum AquaTrack Drainage Channel is installed at the vulnerable wall-to-floor junction to collect water from behind the wall membrane. Platinum AquaTrack Floor Drain Channel can provide cross-floor connections, threshold drainage or a route to a centrally positioned sump.\u003c\/p\u003e\n\u003cp\u003eSet out channel routes and levels before installing the membrane. Confirm the proposed trough, wall-membrane termination, floor-membrane link, sumps and outlets with the waterproofing design. AquaTrack Connector Pieces join straight channel lengths; Swept Corner Pieces form direction changes; T-Pieces join three routes or connect perimeter channel to Floor Drain; and Universal End Caps either terminate a run or provide a reduced pipe outlet where the designed detail permits.\u003c\/p\u003e\n\u003cp\u003eUse the AquaTrack 110mm Drainage Channel Outlet where channels must connect to a standard 110mm pipe. Use the AquaTrack 90° In-Line Drainage Connector where a level change requires connection from the underside of the channel into suitable 40mm pipe. These are design components rather than interchangeable accessories, so choose the outlet by pipe size, flow requirement, sump arrangement and available levels.\u003c\/p\u003e\n\u003cp\u003eMaintenance access is essential. Install AquaTrack Inspection Ports at compatible Swept Corner and T-Piece push-outs, including changes of direction, and use AquaTrack In-Line Access Ports where longer straight runs require additional access. Position every port so it remains reachable after screed, flooring, dry lining and skirting are installed. Never conceal a maintenance point permanently behind a fixed finish.\u003c\/p\u003e\n\u003cp\u003eWhere gravity drainage is unavailable, connect the channel system to a correctly sized Platinum AquaSump. Select pumps for the expected flow, vertical head, pipe resistance and discharge distance. The waterproofing designer should consider pump redundancy, non-return valves, high-water alarms, power failure, battery back-up and the consequences of pump downtime. Route discharge water to a lawful, suitable point where it cannot return towards the structure.\u003c\/p\u003e\n\u003cp\u003eBefore covering the system, flush or water-test the channels and confirm free flow to the outlet or sump. Check connectors, corners, access ports and sump entries for debris or displacement. Test pumps, floats, alarms and any back-up or telemetry equipment in accordance with their instructions.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eAquaTrack Channel Preparation And Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCoordinate the AquaTrack layout with the waterproofing drawings before breaking out the floor. Each standard perimeter channel section is 2m long, approximately 80mm wide and 50mm high with an additional 60mm upstand. The current AquaTrack installation information describes a perimeter trough approximately 130mm wide x 130mm deep, but the final excavation must suit the structure, levels, channel connections, reinforcement, services and project design.\u003c\/p\u003e\n\u003cp\u003eInstall the wall membrane first and take it down into the drainage zone. The AquaTrack guidance calls for the cavity drain membrane to extend at least 100mm below the existing floor level so water from the wall cavity can reach the channel. Keep the membrane face and trough free from masonry fragments, drilling dust and hardened mortar.\u003c\/p\u003e\n\u003cp\u003ePlace a shallow, stable bed of clean 20mm stone in the prepared trough. Set the AquaTrack channel on the stone with the upstand uppermost and the flat side held against the waterproofed wall. Check level and continuity as the work proceeds. Join straight lengths with AquaTrack Connector Pieces and install the specified Swept Corners, T-Pieces, End Caps, outlets and access ports at the planned locations.\u003c\/p\u003e\n\u003cp\u003eUse AquaTrack Floor Drain Channel without an upstand where the design needs a cross-floor connection or a low-profile threshold detail. Connect it to perimeter AquaTrack with the purpose-made T-Piece and route it to the sump or outlet without local backfalls. Use the 110mm outlet, 90° In-Line Connector or Universal End Cap outlet only with the compatible pipe size and connection arrangement described for that component.\u003c\/p\u003e\n\u003cp\u003eAfter the channel is connected, backfill the remaining trough space with clean 20mm stone and finish it level with the top of the channel. Where a floor membrane is included, carry it over the stone-filled zone and seal it to the wall-membrane detail with the specified Joint Sealing Membrane Tape and Corner Tape arrangement while preserving the intended water entry into AquaTrack. Where no floor membrane is used, the AquaTrack guidance describes a 50mm screed finish over the perimeter detail, subject to the approved waterproofing and floor design.\u003c\/p\u003e\n\u003cp\u003eKeep every Inspection Port and In-Line Access Port visible and removable after the floor and wall finishes are complete. Flush the installed channel before concealment, observe the water at the sump or gravity outlet, and rectify any obstruction, backfall, open connector or displaced component before proceeding.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-827_8ad0aa7f-b063-458a-94b7-ee84d7d7bd81_1024x1024.webp?v=1783081847\" alt=\"Platinum CV8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cbr\u003eAquaTrack Drainage Channel being installed at the wall-floor junction with Platinum CV8 Membrane, helping manage water ingress within a Type C basement waterproofing system.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInstall Platinum CV8 with the studs facing the wall. The studded profile must sit against the substrate so that it creates the drainage cavity behind the smooth room-facing surface. Plan the sheet orientation, flange positions, joint direction, fixing lines, wall-to-floor termination and final lining before cutting or drilling.\u003c\/p\u003e\n\u003cp\u003eOffer the first sheet to the wall and align it accurately. CV8 may be installed vertically or horizontally where the system design and site handling permit, but all overlaps must shed water towards the cavity and must not leave an unsealed edge capable of directing water into the internal finish. Keep the sheet tight to corners and prevent unnecessary bridging, tension or creasing.\u003c\/p\u003e\n\u003cp\u003eDrill through the centre of a membrane stud into sound substrate using the bit size required for the Platinum Waterseal Brick Plug. Make the hole deep and clean enough for the plug to seat fully. Control drilling dust so it does not accumulate behind the membrane or enter AquaTrack.\u003c\/p\u003e\n\u003cp\u003eInsert the plug and drive it home with a rubber mallet or club hammer until the soft sealing washer is evenly compressed against the membrane. The washer must sit flat and must not be split, folded or displaced. Where a separate butyl fixing seal is specified because the washer is omitted or cannot seat correctly, form a complete compressed seal around the plug neck with Platinum Waterseal Rope.\u003c\/p\u003e\n\u003cp\u003eFor standard wall areas, space plug fixings no more than 600mm apart unless the project design, substrate, board dimensions or finishing system requires closer centres. Increase restraint where necessary at sheet edges, corners, openings and irregular areas. Align fixing rows with planned battens or support components so later trades can use the plug heads instead of creating new penetrations.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-601.webp?v=1783081852\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\"\u003e\u003c\/p\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\u003cem\u003e\u003cstrong\u003e\u003cbr\u003ePlatinum CV8 Membrane installed on basement walls, with sealed joints and brick plug fixings creating a controlled cavity to manage moisture and direct water towards the drainage system.\u003c\/strong\u003e\u003c\/em\u003e\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eChoose fixing centres to suit the selected internal finish. For a battened or stud-framed lining, install Waterseal Plugs in vertical rows roughly corresponding with the support positions. Timber battens should be at least 25mm x 38mm where following the source installation arrangement. Fix suitable battens or brackets into the plug cores with 5mm No.10 screws of a controlled length that cannot pass through the plug and puncture the membrane.\u003c\/p\u003e\n\u003cp\u003eIf substrate condition prevents plug heads from following a straight support line, compatible dry-lining brackets may be used to align the battens. The bracket and screw arrangement must use the existing sealed plug positions and must not introduce uncontrolled membrane penetrations.\u003c\/p\u003e\n\u003cp\u003eOn reasonably flat walls, the serrated heads of Platinum Waterseal Brick Plugs may provide fixing points for a compatible dot-and-dab board system where the project specification permits it. Apply the board adhesive to the plug heads rather than directly to the unsupported membrane. If following the source CV8 dry-lining arrangement, conventional bonding plaster is applied in dabs at least 8mm thick and covering at least 50% of the membrane area. Confirm adhesive, board, fire and moisture compatibility for the particular project before use.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV8 is a non-meshed membrane and is not intended to receive direct plaster or render. Where a direct wet-plaster or render finish is required, specify a suitable meshed cavity drain membrane instead, such as CV8-MESH. CV8 should be protected by a compatible dry-lining system, independent frame, battened board finish, permitted dot-and-dab lining, blockwork lining or other designed finish that does not puncture or overload the waterproofing layer.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV8_2_1024x1024.png?v=1786025130\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing And Sealing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUse the flange along the edge of the CV8 sheet to form the principal overlap wherever possible. The flange is the flat band without studs. Place Platinum Joint Sealing Membrane Tape inside the overlap, align the adjoining sheet and compress the complete joint firmly so that the butyl tape makes uninterrupted contact with both membrane surfaces.\u003c\/p\u003e\n\u003cp\u003eOn vertical wall runs, arrange the flanges vertically and place each new sheet in front of the preceding sheet so water is directed into the drainage cavity rather than towards an open edge. At a horizontal joint, position the lower sheet in front of the upper sheet. Plan the sequence before fixing because reversing a lap can create a ledge that traps debris or directs water towards the room-facing side.\u003c\/p\u003e\n\u003cp\u003eBoth surfaces must be clean, dry and free from dust, grease and condensation before applying tape or rope. Wipe the membrane with clean rags and allow it to dry. In a cold or damp environment, a hot-air gun may be used cautiously to remove surface moisture and gently warm the jointing area, but the HDPE must not be overheated, softened or distorted. Open flames must not be used.\u003c\/p\u003e\n\u003cp\u003eFor a non-flanged or irregular stud-to-stud joint, form the specified seal with Platinum Waterseal Rope, shaped and compressed into the profile so no route remains through the joint. Platinum Joint Sealing Membrane Tape may also be used in compatible stud-interlock details where it can be fully compressed between clean mating surfaces.\u003c\/p\u003e\n\u003cp\u003eWhere severe water ingress is present or reasonably foreseeable, add a wider face seal with Platinum Corner Tape if required by the design. Corner Tape is also useful at wall-to-floor transitions, patches, protrusions and awkward junctions. It does not remove the need for a correctly formed primary overlap beneath it.\u003c\/p\u003e\n\u003cp\u003eSeal mitres, shaped cuts, columns, vault sections, pipe details and three-dimensional junctions with the appropriate combination of Joint Sealing Membrane Tape, Waterseal Rope, Corner Tape, membrane patches and compatible collars or sleeves. Platinum Mesh Tape may provide additional finishing or reinforcement support where specified, but it must not be relied upon as the sole waterproof seal.\u003c\/p\u003e\n\u003cp\u003eRoll or press every joint along its full length. Inspect for fish-mouths, bridged sections, trapped dust, stretched membrane and insufficient compression before the next sheet or finish hides the detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall-To-Floor Junction And AquaTrack Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe wall-to-floor junction is commonly one of the highest-risk points in a basement and must be detailed as part of the drainage design. Terminate the wall membrane so water from the cavity can enter Platinum AquaTrack Drainage Channel without passing into the internal floor build-up. Keep the channel inlet zone clear and do not seal the membrane in a way that blocks the intended water path.\u003c\/p\u003e\n\u003cp\u003eWhere the AquaTrack product installation arrangement is being followed, form the specified trough at the perimeter, prepare a stable 20mm stone bed, and position the channel with its flat side against the waterproofed wall and the upstand correctly oriented. The exact trough size, channel level and membrane termination must follow the project drawings and current AquaTrack instructions rather than a generic site assumption.\u003c\/p\u003e\n\u003cp\u003eConnect straight channel sections with AquaTrack Connector Pieces and use purpose-made Swept Corners, T-Pieces, End Caps, outlets and access ports rather than improvised cuts. Provide Inspection Ports at direction changes and additional In-Line Access Ports where required. Complete and test the drainage route before laying floor membrane, screed or other permanent finishes.\u003c\/p\u003e\n\u003cp\u003eWhere a floor membrane is included, link it continuously to the wall membrane and drainage detail using the specified overlap, Platinum Joint Sealing Membrane Tape and Platinum Corner Tape. The junction must both preserve waterproofing continuity and allow water from the wall cavity to enter AquaTrack; do not create a sealed pocket above or behind the channel.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore laying Platinum CV8 on a floor, ensure the slab or screed is clean, stable, reasonably dry at the surface and free from oil, loose material, sharp projections and debris. Repair holes, ridges and severe depressions. New concrete bases should meet the specified flatness requirement of no more than 5mm deviation beneath a 3000mm straightedge, and any designed falls must lead water towards the drainage arrangement rather than create isolated low points.\u003c\/p\u003e\n\u003cp\u003eApply Wykamol Anti-Lime Sealer to suitable concrete where required to control free-lime leaching and dust. Allow all levelling, repair and anti-lime treatments to reach the condition stated in their individual instructions before closing the floor cavity.\u003c\/p\u003e\n\u003cp\u003eRoll out the membrane with the studs facing down towards the floor so the studded profile creates a drainage space beneath the smooth upper face. Cut with a sharp blade and fit neatly around walls, columns, sumps, drainage channels and unavoidable service details. Avoid excessive small pieces and unnecessary seams.\u003c\/p\u003e\n\u003cp\u003eLay the next sheet so its flange overlaps the preceding sheet. Apply Platinum Joint Sealing Membrane Tape to clean, dry surfaces inside the overlap and compress the joint firmly along its full length. Where no flange is available, use the designed combination of Waterseal Rope, Joint Sealing Tape, Corner Tape and a membrane patch to create a continuous seal.\u003c\/p\u003e\n\u003cp\u003eConnect the floor membrane to AquaTrack, wall membrane, DPC details, sump entries and other terminations in accordance with the system design. Use Platinum Corner Tape where a broad face-applied seal is required. Check that the completed edge detail does not obstruct water entering the channel from the wall or floor cavity.\u003c\/p\u003e\n\u003cp\u003eIf the final floor build-up is too deep for AquaTrack to collect condensation from the room-facing side of the wall membrane, a Newton Condensation Strip may be included as a separate edge route. This deals with surface condensation only; it does not replace cavity drainage behind the membrane.\u003c\/p\u003e\n\u003cp\u003eFor a floating floor, CV8 may be overlaid with compatible closed-cell insulation before tongue-and-groove flooring is installed. Maintain a 10mm expansion gap around the perimeter unless the flooring or system design requires otherwise. Alternatively, a conventional sand-and-cement screed approximately 65mm thick may be laid over the membrane where structurally and technically suitable.\u003c\/p\u003e\n\u003cp\u003eWhere a high-load insulating drainage layer is needed, specify Wykamol High Load Closed Cell Insulation or Newton CDM Fibran XPS 500-C as part of a compatible build-up. These 50mm-class thermal spacers use a grooved face to preserve drainage and shiplap edges to reduce the risk of screed entering open joints. Follow the board orientation, loading, edge, joint and floor-finish requirements for the chosen product.\u003c\/p\u003e\n\u003cp\u003eProtect the membrane throughout floor work. Use load-spreading boards where necessary, keep reinforcement, tools and sharp offcuts away from the sheet, and prevent screed or adhesive entering drainage cavities or access ports. During relevant wet finishing work, keep atmospheric relative humidity below the limit stated in the technical instructions; the source membrane information specifies below 70% RH during application. Do not install impermeable floor coverings until the screed is dry enough, with the source information requiring screed moisture below 75% RH.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 can line vaulted ceilings, arches and sloping underground structures when the membrane can be fixed tightly to the substrate and water can drain continuously to the designed collection point. Survey and set out the vault before cutting. Plan sheet sizes, joint direction, end-wall transitions, fixing density and access so the membrane follows the curve without bridging, excessive tension, deep creasing or sagging.\u003c\/p\u003e\n\u003cp\u003eMeasure and cut each section accurately, then hold the studs against the vault while drilling through the centre of selected studs into sound substrate. Use enough fixings to keep the sheet firmly supported over the complete curved surface. Standard Waterseal Plug washers may be used where they sit flat and compress evenly. On details where the washer is deliberately omitted or cannot seat reliably, form a complete seal around the plug neck with Platinum Waterseal Rope in accordance with the specified detail.\u003c\/p\u003e\n\u003cp\u003eKeep cuts to the minimum required. Seal flanged laps with Platinum Joint Sealing Membrane Tape and use Waterseal Rope, Corner Tape, patches and compatible reinforcement at mitres, curved joints, returns and end-wall junctions. Every cut edge and penetration must be inspected before the lining is concealed.\u003c\/p\u003e\n\u003cp\u003eThe drainage cavity must remain continuous from the crown and sides of the vault to AquaTrack or another designed collection route. Do not permit the sheet to sag between fixings because low pockets can retain water, sediment and biological debris. Vault work should be undertaken from suitable access equipment by installers able to see and compress every overhead joint safely.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV8_1_1024x1024.png?v=1786024880\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eTypical vaulted soffit installation showing Platinum CV8 Waterproof Membrane fixed to a curved vault, with sealed joints, drainage detail and Platinum AquaTrack channel integration.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eDo not line a flat below-ground soffit with Platinum CV8 unless it has a reliable minimum slope of 10% towards the designed drainage route. A flat or inadequately sloping overhead surface can allow water to pond behind the membrane, load the fixings, contaminate the cavity and place stress on joints and terminations.\u003c\/p\u003e\n\u003cp\u003eIf the soffit does not provide the necessary fall, specify another waterproofing approach. CV8 is better suited to vaulted, arched or sloping overhead construction where gravity can move water to the collection point. Even on a compliant slope, the membrane must remain tight to the substrate and must not sag.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eForm internal and external corners so the CV8 sheet sits tightly into the angle and provides a well-defined edge for the subsequent lining. Do not bridge across a corner and leave a rounded, unsupported void. Use correctly located Waterseal Plugs to hold the membrane into the angle without overstressing or tearing a stud.\u003c\/p\u003e\n\u003cp\u003eWhere the sheet can be folded cleanly, retain the continuous sheet and secure it. Where cutting is necessary, keep the cut controlled and seal the resulting joint with Joint Sealing Membrane Tape, Waterseal Rope, Corner Tape or a purpose-cut patch as required by the geometry. Avoid building several bulky tape layers into a corner unless the detail has space to compress them correctly.\u003c\/p\u003e\n\u003cp\u003eTreat door and window reveals, columns, returns, steps and openings as complete waterproofing details rather than simple trimming points. Lap, wrap or patch the membrane so the drainage cavity remains continuous and all exposed edges are sealed. Coordinate the final lining, frame fixings and threshold before closing the detail; later drilling through a finished reveal is a common route for accidental damage.\u003c\/p\u003e\n\u003cp\u003eWhere a sheet DPC passes through an internal wall or reveal, connect it to CV8 with Platinum Joint Sealing Membrane Tape and add Platinum Corner Tape where a wider face seal is required. Maintain continuity with any above-ground damp-proofing arrangement without blocking the Type C drainage route below ground.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Platinum CV8\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAvoid passing pipes, cables, ducts and conduits through Platinum CV8 wherever practical. Each penetration is a potential weakness and must be included on the waterproofing drawings. Re-route services on the room side of the lining or through a planned service zone where possible.\u003c\/p\u003e\n\u003cp\u003eIf a penetration is unavoidable, cut the smallest neat opening that permits the service to pass without tearing the membrane. Pack and compress Platinum Waterseal Rope around the service to form a continuous butyl seal. Cover the detail with Platinum Corner Tape or a membrane patch where a broader seal is needed. A compatible pipe collar or sleeve should be fully sealed to both the membrane and the service material.\u003c\/p\u003e\n\u003cp\u003eAllow for pipe movement, vibration, thermal expansion and future maintenance. A rigid tape patch applied over a moving or contaminated pipe may fail even when it initially appears sealed. Clean and prepare plastics, metals and coated services in accordance with the sealing accessory instructions, and use a proprietary collar where simple rope-and-tape detailing cannot accommodate movement.\u003c\/p\u003e\n\u003cp\u003eFloor penetrations require particular care because water can bypass the membrane and enter the finished floor build-up. Use Waterseal Rope, Joint Sealing Membrane Tape and a purpose-cut CV8 or DPC patch as required. Seal the full patch perimeter, inspect it from every side and, where practical, test it before installing insulation, screed or flooring.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Platinum CV8 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProtect CV8 immediately after installation. On walls, protection may be provided by an independent lining, framed dry lining, correctly fixed battens and boards, an approved dot-and-dab system, blockwork or another specified finish. On floors, use compatible closed-cell insulation with tongue-and-groove flooring, an adequately designed screed or another load-spreading build-up that will not puncture the sheet.\u003c\/p\u003e\n\u003cp\u003eTell every follow-on trade that the waterproof membrane must not be drilled, nailed or screwed through. Use the existing Waterseal Plug cores for approved secondary fixings and select screw lengths that cannot reach beyond the plug. Mark no-fix zones at channels, sumps, pipework and complex details before covering the membrane.\u003c\/p\u003e\n\u003cp\u003eKeep sharp tools, board corners, reinforcement, rubble, heavy point loads and uncontrolled site traffic away from unprotected CV8. Do not drag materials across floor membrane. If temporary protection is removed, reinspect the exposed area before installing the permanent finish.\u003c\/p\u003e\n\u003cp\u003eProtect stored and installed membrane from prolonged direct sunlight, high temperatures and open flame. CV8 is intended to remain protected within the building build-up rather than exposed as a finished surface.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 manages water and moisture entering through the structure; it does not remove water vapour generated inside the finished room. Cooking, showering, drying clothes, occupation and inadequate heating can still produce condensation on cold surfaces even when the Type C system is functioning correctly.\u003c\/p\u003e\n\u003cp\u003eProvide an appropriate ventilation, heating and humidity-control strategy for the intended use. Mechanical extract or whole-room ventilation is especially important in bathrooms, kitchens, utility rooms and other high-moisture areas below ground. The ventilation design must comply with the wider building specification and should remain maintainable after occupation.\u003c\/p\u003e\n\u003cp\u003eDo not diagnose condensation as membrane failure without checking humidity, surface temperatures and ventilation, but equally do not assume visible water is condensation until drainage, pumps, joints and penetrations have been inspected. The two sources require different remedial actions.\u003c\/p\u003e\n\u003cp\u003eWhere condensation can run down the room-facing surface of the wall membrane and the floor build-up prevents it reaching AquaTrack, consider Newton Condensation Strip as part of the designed edge detail. Keep its route clear and do not bridge it with sealant, plaster, screed or skirting adhesive.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspect the complete CV8 installation before it is covered. Check the membrane for punctures, cuts, tears, crushed studs, sagging, loose plugs, distorted washers, poorly compressed joints, bridged corners and unsealed penetrations. Confirm that each repair is complete before boards, battens, insulation, screed or flooring make the area inaccessible.\u003c\/p\u003e\n\u003cp\u003eCheck every Joint Sealing Membrane Tape overlap for continuous contact. Confirm that Waterseal Rope remains correctly positioned and compressed, and that Corner Tape is fully bonded beyond the edge of each repair or junction. Pay particular attention to the base of walls, door openings, columns, external corners, pipe clusters and vault end details.\u003c\/p\u003e\n\u003cp\u003eInspect the water-management system separately. Confirm AquaTrack channel position and level; straight connectors; Swept Corners; T-Pieces; End Caps; 110mm or 40mm outlets; Floor Drain links; sump entries; and all Inspection and In-Line Access Ports. Remove debris and verify that each access point remains reachable after the proposed finish is installed.\u003c\/p\u003e\n\u003cp\u003eFlush or water-test the drainage route in accordance with the design. Test all pumps, floats, non-return valves, alarms, battery back-up and telemetry. Confirm the discharge point accepts the flow and does not return water towards the building. Record the inspection and retain photographs of critical details before concealment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Platinum CV8\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf a fixing hole is drilled through the wrong stud, clean and dry the area, fill the penetration with Platinum Waterseal Rope and over-seal it with Platinum Corner Tape. Extend the face tape well beyond the damaged point and press it firmly to the prepared membrane. Install the replacement Waterseal Plug through a different stud into sound substrate.\u003c\/p\u003e\n\u003cp\u003eFor a small cut or puncture, flatten the damaged area without enlarging it, then bridge it with Corner Tape on clean, dry membrane. The tape must extend beyond the defect on every side and remain fully supported. Remove loose fragments that would prevent adhesion, but do not pull a tear wider.\u003c\/p\u003e\n\u003cp\u003eFor a larger hole, cut a CV8 patch with a generous sound margin around the damage. Where the studs interlock neatly, seal the patch perimeter with Platinum Joint Sealing Membrane Tape inside the overlap. Where the profile cannot form a reliable interlock, use Platinum Corner Tape around the complete face perimeter, adding Waterseal Rope beneath irregular sections where required.\u003c\/p\u003e\n\u003cp\u003eTake extra care with floor and vault repairs because these areas may see greater water movement or mechanical loading. A repair that cannot be fully accessed, supported, compressed and inspected should be removed and replaced with a larger membrane section rather than concealed as a doubtful patch.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 itself requires little routine attention after it is protected, but the drainage and pumping system must remain accessible and serviceable. Maintain AquaTrack channels, Floor Drain, outlets, access ports, sump chambers, pumps, valves, alarms and discharge pipework in accordance with the waterproofing design and each component manufacturer's instructions.\u003c\/p\u003e\n\u003cp\u003eThe AquaTrack product information recommends regular channel cleaning and describes a six-monthly cleaning interval. The actual maintenance plan should reflect the water risk, lime and sediment exposure, pump duty, occupancy and warranty requirements. High-risk or heavily used systems may require more frequent inspection.\u003c\/p\u003e\n\u003cp\u003eUse AquaTrack Inspection Ports at corners and T-Pieces and AquaTrack In-Line Access Ports on straight runs to inspect and flush the system. Keep covers visible or clearly documented and removable. Clean silt and debris from the sump, operate each pump, test floats and non-return valves, check the discharge and confirm every alarm and back-up device works.\u003c\/p\u003e\n\u003cp\u003eWhere the waterproofed space relies on pumping, arrange competent servicing and maintain an emergency response plan. Consider a secondary pump, high-water alarm, battery back-up and telemetry where the consequence of failure justifies them. Replace batteries and worn pump components at the intervals specified for the installed equipment.\u003c\/p\u003e\n\u003cp\u003eControl future alterations. Shelving, kitchens, sanitary fittings, skirting, cupboards, floor fixings, new services and later refurbishment must not penetrate CV8 or obstruct AquaTrack without a reviewed waterproofing detail. Provide the owner with drawings, photographs, operating instructions, maintenance schedules and the location of no-fix zones and access points.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePlatinum CV8 is one component of a Type C cavity drain system. It must not be relied on as a stand-alone barrier against hydrostatic pressure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWater behind or below the membrane must have a continuous route to AquaTrack, a suitable gravity outlet or a correctly selected sump-and-pump arrangement.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe membrane alone does not guarantee a Grade 3 environment. The complete structure, waterproofing design, drainage, pumps, details, finishes, ventilation and maintenance determine the internal result.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not use CV8 on a flat below-ground soffit unless the soffit provides a minimum 10% slope to drainage. Prevent sagging on all overhead applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCV8 is non-meshed and must not receive direct plaster or render. Use a compatible dry lining or specify a suitable meshed membrane such as Platinum CV8-MESH for a direct wet finish.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeal below-ground fixing points with the supplied Waterseal Plug washers or with a correctly compressed Waterseal Rope detail where the washer is omitted by design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eKeep tapes and rope clean and dry during installation. Butyl seals will not perform reliably over dust, grease, standing water, condensation or loose material.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eDo not allow later screws, nails, brackets, services or floor fixings to puncture the membrane. Repair all accidental damage before concealment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eProtect the membrane from prolonged UV exposure, sharp objects, high temperatures and open flames.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCavity drain performance depends on inspection and maintenance. Do not conceal AquaTrack access ports, sump covers, alarms or serviceable components.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eSeek specialist design advice for habitable basements, high water-risk sites, complex structures, combined waterproofing, pumped systems, structural movement or warranty-controlled work.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStorage And Shelf Life\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eStore Platinum CV8 rolls upright, under cover, on a stable surface and away from prolonged sunlight, high temperatures, ignition sources and open flames. Protect the roll edges and flanges from crushing, contamination and distortion. Do not stack or handle rolls in a way that damages the stud profile.\u003c\/p\u003e\n\u003cp\u003eThe stated life expectancy is equivalent to the lifetime of the structure when the membrane is stored and installed in accordance with the technical recommendations. This is an in-service durability statement, not permission to leave rolls exposed indefinitely before installation. Inspect stored material before use and reject sections with heat damage, brittleness, severe distortion, contamination or compromised edges.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV8 is manufactured from clear HDPE. The published technical information lists a unit weight of 0.5kg\/m², sheet thickness of 0.45mm and stud height of 7mm. The product is described commercially as an 8mm-class or nominal 8mm studded membrane. It passes water-tightness testing at 60kPa for 24 hours to EN 1928.\u003c\/p\u003e\n\u003cp\u003ePublished tensile strength is 416N in the machine direction and 488N in the cross direction to BS 12311-2. Resistance to static loading is greater than 20kg to BS 12730. Compressive strength is listed as 180kN\/m² in the main technical data to BS EN ISO 25619-2, while the essential-characteristics table reproduces the source declaration format of 180kN.\u003c\/p\u003e\n\u003cp\u003eThe listed working temperature range is -50°C to +80°C and the softening temperature is 126°C. Reaction to fire is Class E to BS EN 13501-1, application type is Type V, and life expectancy is stated as the lifetime of the structure when stored and installed in line with the recommendations.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV8 can contribute to a Type C system designed under BS 8102:2022, but every project must be assessed as a complete waterproofing arrangement. Product data does not replace a site-specific design, and references to a standard do not constitute third-party product certification.\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Platinum CV8 Cavity Drain Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 Cavity Drain Waterproof Membrane is a clear, high-density polyethylene membrane designed for waterproofing and damp-proofing walls, floors and other structural surfaces. Its nominal 8mm studded profile creates a cavity between the building substrate and the internal finish. Water or moisture entering through the structure can move through this cavity towards a drainage channel, gravity outlet or sump-and-pump system. The product is primarily used as part of Type C drained protection waterproofing rather than as a stand-alone barrier. It is waterproof, salt inhibiting, root resistant and contaminant resistant, making it particularly suitable for basements, cellars, vaults, tunnels, retaining structures and refurbishment projects affected by persistent dampness or water ingress.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Platinum CV8 Cavity Drain Waterproof Membrane work?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 works by controlling water after it has entered the structure instead of attempting to stop every drop at the substrate surface. The studs face the wall or floor and form a defined drainage space behind the membrane. Water entering this space is directed towards perimeter or cross-floor channels and then safely discharged through a gravity outlet or sump-and-pump arrangement. The smooth internal face separates the room finish from damp, salt-contaminated or water-bearing masonry. This managed drainage principle is particularly dependable where groundwater conditions may vary. However, it only works when the cavity, sealed joints, channels, outlets, inspection points and pumps have been designed and installed as one coordinated, maintainable waterproofing system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What does Type C waterproofing mean?\u003c\/h3\u003e\n\u003cp\u003eA) Type C waterproofing, also called drained protection, accepts that some moisture or water may penetrate the retaining structure. Instead of relying entirely on a coating bonded to the wall or floor, it creates an internal cavity through which that water can travel safely. Platinum CV8 forms this cavity, while drainage channels, outlets and possibly pumps collect and remove the water. The approach is commonly used in basements because it can accommodate changing groundwater conditions and provides accessible maintenance routes. Type C protection must be designed as a complete system. The membrane cannot simply be fitted to a wet wall without drainage, because accumulated water could overload joints, escape into finishes or cause the installation to fail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where can Platinum CV8 Cavity Drain Waterproof Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 can be used on suitable walls, floors, vaults, tunnels, retaining walls and other structures above or below ground level. Typical applications include basement waterproofing, cellar conversions, underground corridors, plant rooms, stores and the refurbishment of damp properties. It can also isolate internal finishes from residual dampness or salt-contaminated masonry above ground, provided avoidable moisture sources are corrected wherever practical. Suitable backgrounds may include concrete, brick, blockwork, stone, sound render and sound screed. Every application still requires an assessment of structural stability, moisture risk, drainage and the intended room use. Complex, habitable or high-risk below-ground projects should be designed by a competent waterproofing specialist familiar with Type C systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Platinum CV8 suitable for basement and cellar conversions?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 is particularly suitable for basement and cellar conversions when incorporated into a properly designed cavity drain system. It can separate the new internal lining and floor build-up from wet masonry, groundwater, residual dampness and damaging salts. Water is managed behind or beneath the membrane and conveyed to AquaTrack drainage, a dependable gravity outlet or an AquaSump installation. This can help transform previously damp or unusable areas into practical storage, utility, working or habitable accommodation. Nevertheless, the membrane addresses structural water ingress rather than every aspect of a conversion. Ventilation, insulation, heating, fire safety, drainage capacity, pump resilience, access, building control and the proposed internal environmental grade must all be considered within the overall design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV8 be used on both walls and floors?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 can be installed on both walls and floors, but its orientation and supporting details differ. On walls, the studs face the substrate and the membrane is normally secured with sealed Platinum Waterseal Brick Plugs. On floors, it is generally loose-laid with the studs facing downwards, creating a drainage space beneath the smooth upper surface. Floor overlaps must be sealed and connected correctly to perimeter drainage, wall membrane and sump or outlet details. The completed floor also needs a compatible load-spreading build-up, such as suitable closed-cell insulation and flooring or an appropriately designed screed. In both applications, joints, penetrations and transitions must remain watertight without obstructing the intended route by which water reaches the drainage system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV8 help achieve a Grade 3 internal environment?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 can contribute to a waterproofing system designed to provide a Grade 3 internal environment under BS 8102:2022. Grade 3 conditions are normally required where water penetration and dampness would be unacceptable, including many habitable basements, offices and similar occupied spaces. The membrane alone does not provide or guarantee that grade. Success depends on the structure, risk assessment, sealed details, drainage capacity, discharge arrangement, pump specification, redundancy, alarms, ventilation, maintenance and quality of installation. The intended environmental grade should therefore be established before work begins. Where building control, NHBC or another warranty provider is involved, the complete proposed system and supporting evidence should be submitted for project-specific agreement rather than assuming that the membrane has automatic approval.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What advantages does Platinum CV8 offer over bonded tanking?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 manages water through a maintainable cavity, whereas bonded tanking attempts to resist water directly at the substrate face. This can make the membrane especially useful on older, damp or salt-contaminated structures where achieving a perfect bond may be difficult. Preparation is often less aggressive because sound masonry does not necessarily need to be stripped or heavily keyed. The membrane is mechanically fixed or loose-laid and has no curing period of its own, allowing correctly detailed follow-on work to begin promptly. It also isolates vulnerable finishes from dampness and salts. However, this is not proof that Type C protection is universally superior. It requires drainage, discharge capacity, inspection access and continuing maintenance, while some projects may require combined Type A, Type B and Type C protection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is Platinum CV8 made from, and what are its main dimensions?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 is manufactured from clear high-density polyethylene, commonly abbreviated to HDPE. Published information gives a sheet thickness of approximately 0.45mm, a unit weight of 0.5kg per square metre and an individual stud height of 7mm. It is commercially described as a nominal 8mm or 8mm-class cavity drain membrane because of its overall profiled format and intended cavity depth. This relatively compact profile provides useful drainage capacity without demanding the build-up depth associated with much deeper-studded products. HDPE also provides resistance to water, salts, roots and common contaminants. These figures should be used alongside the current product documentation, project drawings and finishing specification, particularly when calculating floor levels, clear room dimensions, drainage details and material quantities.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why is Platinum CV8 Cavity Drain Waterproof Membrane clear?\u003c\/h3\u003e\n\u003cp\u003eA) The clear construction of Platinum CV8 helps installers see the underlying wall or floor while positioning and fixing the membrane. On walls, this makes it easier to locate sound areas of masonry, align fixing rows and coordinate Platinum Waterseal Brick Plugs with battens, brackets or dry-lining supports. Visibility can also assist when working around repairs, corners, openings, pipes and changes in substrate. The transparent sheet does not make the waterproofing self-inspecting once finishes are installed, so critical details should still be checked, photographed and recorded before concealment. Clear HDPE should also not be confused with permanent exposure suitability. The membrane is intended to remain protected within the building build-up and should be shielded from prolonged sunlight, high temperatures, open flames and accidental site damage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why does Platinum CV8 have a nominal 8mm studded profile?\u003c\/h3\u003e\n\u003cp\u003eA) The nominal 8mm profile creates a defined void through which water and moisture can move towards the designed drainage route. It offers more cavity space than a shallow damp-proofing membrane while avoiding some of the room or floor-depth loss associated with considerably deeper profiles. This balance makes Platinum CV8 suitable for many structural waterproofing, basement and cellar applications. The studs also separate the new internal finish from wet or contaminated masonry, reducing direct contact with salts and dampness. However, cavity depth alone does not determine drainage performance. Water must have an uninterrupted route to correctly sized channels, outlets or pumps, and the membrane must not sag, become crushed or collect debris. Expected water flow and loading should always be assessed during system design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which substrates are suitable for Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 may be installed over stable concrete, brickwork, blockwork, stone, masonry, sound render and sound screed, provided the background suits the proposed fixings and drainage arrangement. Walls must be capable of holding Waterseal Brick Plugs securely, while floor bases should be clean, stable and sufficiently even to avoid damaging or overstressing the membrane. New concrete floors should follow the relevant construction requirements, with the supplied information specifying no more than 5mm deviation beneath a 3000mm straightedge. Unsound plaster, friable masonry, defective screed, sharp projections and unstable material require removal or repair. The product must not be used to conceal structural movement, collapsing substrates, hazardous contamination or unresolved timber decay. Those conditions require appropriate investigation and remedial work first.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should the surface be prepared before installing Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Preparation should begin by removing loose plaster, weak render, defective screed, sharp projections and debris that could damage the membrane or obstruct drainage. Holes, severe depressions and unstable areas should be repaired with an appropriate compatible material and allowed to dry as required. Visible mould or masonry fungal growth should be cleaned and treated with a suitable masonry biocide. Dry rot requires a separate investigation and must never simply be concealed. New concrete, free lime, efflorescence or dusting may require an anti-lime treatment to reduce the risk of mineral deposits blocking drainage routes. Avoidable moisture sources, including leaking plumbing, defective rainwater goods, poor pointing and high external ground levels, should also be corrected wherever practical before the cavity drain system is enclosed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Platinum CV8 need a drainage channel or sump?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 requires a clear, dependable and maintainable drainage route because it is a cavity drain membrane rather than a stand-alone tanking barrier. Water entering behind the sheet is commonly collected by Platinum AquaTrack at the wall-to-floor junction. Cross-floor drainage may be added where necessary. If levels permit, the channel can discharge through a suitable gravity outlet; otherwise, it will normally feed a correctly sized AquaSump and pump system. The chosen arrangement must account for expected flow, vertical lift, pipe resistance, discharge distance and the consequences of failure. Inspection ports are essential for cleaning and flushing. Before concealment, the installed route should be water-tested to confirm that connectors, corners, outlets, channels and sump entries remain clear and drain freely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Platinum CV8 installed on a wall?\u003c\/h3\u003e\n\u003cp\u003eA) On walls, Platinum CV8 is installed with its studs facing the substrate so that the smooth face points towards the room. Sheets may be positioned vertically or horizontally where the project design permits, although laps must always direct water into the cavity rather than towards the internal finish. The membrane is fixed into sound masonry through the centre of selected studs using Platinum Waterseal Brick Plugs. Each plug washer must sit flat and compress evenly to seal the fixing. The sheet should be held closely against corners and irregular surfaces without excessive tension, bridging or creasing. Installation must also coordinate the bottom termination, AquaTrack channel, joints, penetrations and proposed lining. Drilling dust should be controlled so it cannot accumulate behind the membrane or contaminate the drainage channel.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Platinum CV8 installed on a floor?\u003c\/h3\u003e\n\u003cp\u003eA) On a floor, Platinum CV8 is normally loose-laid with the studs facing down towards the prepared slab or screed. The base should be clean, stable, free from sharp projections and sufficiently level to prevent isolated low points or stress. Sheets are cut neatly around columns, sumps, channels and planned services, while flanged edges are overlapped and sealed with Platinum Joint Sealing Membrane Tape. Non-flanged details may require Waterseal Rope, Corner Tape or a membrane patch. The floor membrane must connect continuously with the wall membrane and drainage system without blocking water movement into AquaTrack. It then needs protection from tools, rubble and concentrated loads, followed by a compatible load-spreading floor build-up such as suitable insulation and flooring or a properly designed screed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are joints and overlaps sealed in Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Flanged sheet edges should be used for the main overlaps wherever possible. Platinum Joint Sealing Membrane Tape is placed inside the overlap, after which the adjoining sheets are aligned and firmly compressed along the complete joint. On walls, each new sheet should sit in front of the preceding vertical flange, while the lower sheet should sit in front of the upper sheet at horizontal joints. This arrangement encourages water to remain within the drainage cavity. Surfaces receiving tape or rope must be clean, dry and free from dust, grease and condensation. Irregular or stud-to-stud joints may require Waterseal Rope, Corner Tape or a suitable membrane patch. Every joint should be inspected for fish-mouths, bridging, contamination and inadequate compression before it is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fixing centres should be used for Platinum CV8 on walls?\u003c\/h3\u003e\n\u003cp\u003eA) Standard wall areas generally require Platinum Waterseal Brick Plugs at centres no greater than 600mm, unless the substrate, board dimensions, finishing system or project design calls for closer spacing. Additional restraint may be required at sheet edges, corners, openings, vaults and irregular areas. Fixing rows should ideally correspond with planned battens, dry-lining brackets or other support components so later trades can use the sealed plug cores. When attaching secondary components, controlled-length 5mm No.10 screws may be fitted into suitable plug cores, but they must never extend through the plug and puncture the membrane. Every fixing should be drilled through the centre of a stud into sound material. The sealing washer must remain flat, evenly compressed and undamaged after the plug is driven home.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should Platinum CV8 connect to AquaTrack at the wall-to-floor junction?\u003c\/h3\u003e\n\u003cp\u003eA) The wall-to-floor junction must allow water from behind Platinum CV8 to enter the AquaTrack channel while preventing it from reaching the internal floor build-up. Under the described AquaTrack arrangement, the wall membrane extends at least 100mm below the existing floor level into the drainage zone. The channel is placed on a stable bed of clean 20mm stone, with its flat face against the waterproofed wall and its upstand correctly orientated. Connectors, swept corners, T-pieces, outlets and inspection ports should be purpose-made components rather than improvised details. If a floor membrane is included, it is sealed continuously to the wall detail using the specified tapes. The completed junction must preserve both waterproofing continuity and an unobstructed route into the channel.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) When is a gravity outlet preferable to a sump and pump?\u003c\/h3\u003e\n\u003cp\u003eA) A gravity outlet may be preferable where site levels allow water to flow continuously to a lawful, secure discharge point without relying on mechanical equipment. This can reduce dependence on electricity, pumps and moving components, although the outlet must remain protected against blockage, surcharge and water returning towards the structure. Where gravity drainage is unavailable or unreliable, Platinum CV8 will normally discharge through AquaTrack to a suitably sized AquaSump and pump arrangement. Pump selection should consider expected inflow, lift, pipe resistance and discharge distance. High-risk installations may need twin pumps, non-return valves, a high-water alarm, battery back-up or telemetry. Whichever method is chosen, access for inspection, testing and maintenance must remain available throughout the life of the waterproofing system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can plaster or render be applied directly to Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Direct plaster or render should not be applied to Platinum CV8 because it is a non-meshed membrane and does not provide the appropriate key for a wet-applied finish. It should instead be covered with a compatible dry-lining arrangement, independent frame, battened board system, approved dot-and-dab lining, blockwork lining or another specifically designed finish. On reasonably flat walls, a compatible adhesive system may use the serrated Waterseal Plug heads as controlled bonding points where the project specification permits. Adhesive should not be applied indiscriminately to unsupported membrane. If a direct plastered or rendered finish is required, a purpose-made meshed cavity drain membrane, such as Platinum CV8-MESH, should be considered. Board, adhesive, fire, acoustic and moisture requirements must also be checked for the intended room.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should pipes and cables passing through Platinum CV8 be sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Services should be routed on the room side of the lining or within a planned service zone wherever possible, because every penetration introduces a potential weakness. If a pipe, cable, conduit or duct must pass through Platinum CV8, the smallest practical neat opening should be made without tearing the sheet. Platinum Waterseal Rope can then be packed and compressed continuously around the service, followed by Corner Tape, a membrane patch or a compatible proprietary collar where required. The sealing arrangement must accommodate vibration, thermal expansion and future maintenance. Plastics, metals and coated surfaces should be cleaned and prepared in accordance with the accessory instructions. Floor penetrations deserve particular care because a defective seal can allow water directly into insulation, screed or the finished floor construction.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are corners, door reveals and irregular junctions detailed?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 should be fitted tightly into internal and external corners rather than bridging across them and leaving unsupported rounded voids. A continuous fold is preferable where it can be formed without distorting the studs. When cutting is unavoidable, the resulting joint should be sealed with the appropriate combination of Joint Sealing Membrane Tape, Waterseal Rope, Corner Tape and purpose-cut patches. Door and window reveals, columns, steps, returns and thresholds must be treated as complete waterproofing details, not merely trimming locations. Membrane continuity, cavity drainage and the final frame or lining fixings should be planned together. Bulky layers of tape should be avoided unless they can be fully compressed. Later drilling through finished reveals is particularly risky and should be prevented through documented no-fix zones.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV8 be used on vaulted ceilings or flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 can be used on vaulted, arched or sloping underground surfaces when it is fixed tightly and water can drain continuously to a designed collection point. Sheet sizes, joint direction and fixing density should prevent sagging, bridging and pockets in which water or sediment could collect. Every overhead fixing and cut must be securely sealed and safely inspected before concealment. A flat below-ground soffit is a significant limitation. Platinum CV8 should not be used there unless the surface has a reliable minimum slope of 10 per cent towards the drainage route. An inadequately sloping soffit can permit ponding, increase loading on fixings and place pressure on joints. Where the necessary fall is unavailable, a different waterproofing approach should be professionally specified.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What tools and ancillary products are needed to install Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Typical tools include an SDS hammer drill, correctly sized masonry bits, rubber or club hammer, sharp utility knife, tape measure, level, straightedge, marker, clean cloths, pressure roller and suitable dust extraction. A laser level can assist with long fixing rows, channel routes and floor levels. Principal ancillary materials may include Waterseal Brick Plugs, Joint Sealing Membrane Tape, Waterseal Rope, Corner Tape, membrane patches, AquaTrack channels, connectors, access ports, outlets and an AquaSump where gravity drainage is unavailable. Clean, dry conditions are essential for butyl seals. A controlled hot-air gun may remove light surface moisture in cold conditions, but it must not distort the HDPE. Open flames must never be used, and all required system components should be available before installation begins.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Platinum CV8 require a curing or drying period?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 itself does not require curing because it is mechanically fixed to walls or loose-laid on floors rather than applied as a wet coating. Once the membrane, joints, penetrations, drainage connections and inspection points have been completed and checked, the correctly specified next stage can usually proceed. This can shorten installation programmes compared with some bonded waterproofing products. However, the absence of membrane curing does not remove drying requirements elsewhere. Repair mortars, screeds, plasters, concrete treatments, adhesives and sealers must still reach the condition stated in their individual instructions. The supplied information also requires appropriate humidity control during relevant wet finishing work and suitable screed dryness before impermeable floor coverings are fitted. Moist or dusty surfaces must never be trapped inside butyl-taped joints.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should accidental damage to Platinum CV8 be repaired?\u003c\/h3\u003e\n\u003cp\u003eA) A misplaced fixing hole should be cleaned, dried, filled with Platinum Waterseal Rope and covered with Corner Tape extending well beyond the penetration. The replacement plug should then be installed through a different stud into sound substrate. Small cuts or punctures can normally be covered with Corner Tape, provided the surrounding membrane is clean, dry, supported and undistorted. Larger holes require a generously sized CV8 patch, sealed around its complete perimeter using Joint Sealing Membrane Tape, Corner Tape and Waterseal Rope as appropriate to the profile. Floor and overhead repairs need especially careful assessment because they may experience greater water movement or loading. If a repair cannot be fully accessed, compressed and inspected, the damaged section should be replaced rather than concealed with a doubtful patch.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Platinum CV8 prevent condensation inside a basement?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 manages moisture and water entering through the building structure, but it does not remove water vapour generated within the occupied room. Cooking, bathing, clothes drying, breathing and inadequate ventilation can still produce condensation on cold internal surfaces. A completed basement therefore needs an appropriate heating, insulation and ventilation strategy, including mechanical extraction or whole-room ventilation where necessary. Visible moisture should not automatically be diagnosed as membrane failure, but it should not automatically be dismissed as condensation either. Humidity, surface temperature, drainage channels, pumps, joints and penetrations should all be checked. Where condensation might run down the room-facing side of the wall membrane but cannot reach AquaTrack, a compatible condensation strip may be included within the designed floor-edge detail to provide a separate drainage route.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the principal technical performance figures for Platinum CV8?\u003c\/h3\u003e\n\u003cp\u003eA) Published technical information identifies Platinum CV8 as clear HDPE with a weight of approximately 0.5kg\/m², a 0.45mm sheet thickness and 7mm stud height, commercially described as an 8mm-class membrane. It passes watertightness testing at 60kPa for 24 hours under EN 1928. Listed tensile strength is 416N in the machine direction and 488N in the cross direction under BS 12311-2. Static loading resistance exceeds 20kg, while the main data lists compressive strength as 180kN\/m². Its working temperature range is stated as -50°C to +80°C, with a softening temperature of 126°C. Reaction to fire is Class E, so the membrane must remain protected within an appropriately specified building construction.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How long should Platinum CV8 Cavity Drain Waterproof Membrane last?\u003c\/h3\u003e\n\u003cp\u003eA) The stated life expectancy of Platinum CV8 is equivalent to the lifetime of the structure when it is stored, installed and protected in accordance with the applicable recommendations. This reflects the durability of the HDPE membrane rather than a guarantee that every cavity drain system will perform indefinitely without attention. Long-term waterproofing depends on securely sealed joints and penetrations, protection from later damage and continuing operation of channels, outlets, pumps and alarms. Rolls awaiting installation should be stored upright, under cover and on a stable surface, away from prolonged sunlight, high temperatures, ignition sources and open flames. Crushed flanges, damaged studs, heat distortion or contamination should be identified before use, and seriously compromised sections should be rejected rather than incorporated into the work.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What maintenance does a Platinum CV8 system require?\u003c\/h3\u003e\n\u003cp\u003eA) The protected Platinum CV8 sheet normally needs little direct routine attention, but its drainage and pumping components require planned inspection and servicing. AquaTrack information recommends regular cleaning and describes a six-monthly channel-cleaning interval, although the appropriate frequency should reflect water risk, lime deposits, sediment, pump use and warranty conditions. Inspection ports and in-line access points should remain visible, documented and removable so channels can be checked and flushed. Sumps should be cleaned, pumps operated, floats tested and non-return valves examined. High-water alarms, secondary pumps, batteries and telemetry should also be tested where fitted. Owners should retain drawings, photographs, operating instructions and no-fix zones so later alterations do not puncture the membrane, obstruct drainage or permanently conceal maintainable equipment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Platinum CV8 Cavity Drain Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV8 is not a stand-alone barrier against hydrostatic pressure and must always have a continuous drainage and discharge route. It cannot independently guarantee Grade 3 conditions, because the result depends on the complete structure, waterproofing design, workmanship, pumps, ventilation and maintenance. Direct plaster or render cannot be applied because CV8 is non-meshed. It should not be fitted to a flat below-ground soffit without a minimum 10 per cent fall to drainage, and it must not conceal structural failure, hazardous contamination or unresolved dry rot. Butyl seals are unreliable on dusty, greasy, wet or condensed surfaces. The membrane also requires protection against punctures, prolonged ultraviolet exposure, high temperatures and open flames. Access ports, sump covers and alarms must never be permanently concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What practical tips help ensure a reliable Platinum CV8 installation?\u003c\/h3\u003e\n\u003cp\u003eA) Plan the entire installation before cutting or drilling, including sheet direction, fixing rows, AquaTrack routes, sump position, service entries, access ports and final finishes. Keep the membrane, tapes and Waterseal Rope clean and dry, and control drilling debris so it cannot enter the cavity or drainage channel. Arrange laps to shed water towards the cavity, then press every taped joint firmly along its full length. Use existing sealed plug cores for approved later fixings and carefully control screw length. Before concealment, inspect for punctures, loose plugs, crushed studs, bridged corners and unsealed penetrations. Flush the channels, test pumps and alarms, confirm the discharge route and photograph critical details. Habitable, high-risk, complex or warranty-controlled projects should always involve a competent waterproofing design specialist.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV8_WATERPROOF_MEMBRANE_TECH_457d8c2b-f62b-4a29-a7f6-98ff06340bfe.pdf?v=1786537180\" target=\"_blank\" rel=\"noopener\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV8_WATERPROOF_MEMBRANE_TECH_457d8c2b-f62b-4a29-a7f6-98ff06340bfe.pdf?v=1786537180\" target=\"_blank\" rel=\"noopener\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV8_WATERPROOF_MEMBRANE_TECH_160x160.jpg?v=1785843389\" alt=\"\" style=\"float: none;\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV8_WATERPROOF_MEMBRANE_TECH.pdf?v=1785843451\" rel=\"noopener\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e","brand":"Platinum Building Chemicals Ltd","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":8174582333539,"sku":"BWMCV8","price":115.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 5M (10M²)","offer_id":8174599176291,"sku":"BWMCV8-05","price":55.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":8174592458851,"sku":"BWMCV8-10","price":82.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platinum-cv8-cavity-drain-waterproof-membrane-8mm-stud-w-2-07m-x-l-20m-40m-basement-membranes-761.webp?v=1786020307"},{"product_id":"basement-waterproof-tanking-membrane-cv8-mesh","title":"Platinum CV8 MESH - Basement Tanking Membrane (8mm Stud)","description":"\u003cp\u003ePlatinum CV8 MESH is a High Quality, 8mm Stud, Basement Waterproofing Tanking Membrane comprising of HDPE Membrane with a strong polyethylene mesh on the surface of one side. \u003c\/p\u003e\n\u003cp\u003eThe meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/p\u003e\n\u003cp\u003eAvailable in \u003cstrong\u003e(W) 2.0M x (L) 10M (20M²)\u003c\/strong\u003e and \u003cstrong\u003e(W) 2.0M x (L) 20M (4\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e0M²)\u003c\/strong\u003e \u003c\/span\u003eRolls.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003ePlatinum CV8 MESH Cavity Drain Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003ePlatinum CV8 Mesh is a high quality Cavity Drain Waterproofing Membrane comprising of high density polyethylene membrane with a strong polyethylene mesh heat-welded during the manufacturing process to the surface of one side. \u003c\/p\u003e\n\u003cp\u003eThe meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV8 Mesh is suitable for the waterproofing of earth retained walls and vaulted soffits and is guaranteed against deterioration for 30 years, with a life expectancy of the design life of the building (DIN 9001:2000).\u003c\/p\u003e\n\u003cp\u003ePlatinum CV8 Mesh is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalines, saline solutions and organic acids, and not affected by minerals and hydrocarbons. It is also rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eHigh Performance Bonded Mesh\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePart of a Type C Cavity Drain Membrane System in Line With BS8102:2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaterproof, Salt Inhibiting, Root and Contaminate Resistant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCreates a Dry, Habitable Living Space in Areas Previously Suffering From Damp \/ Wet Conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasily Cut Down Using a Sharp Blade\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasy to Fold Around Windows and Doors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuick to Install - Minimal Preparation Needed to Wall Surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo Drying Out Process - Redecoration Can Occur Immediately\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLittle or No Damage to the Existing Structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm8-mesh-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-wykamol-cm8-mesh-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-mesh-table th,\n  .pc-wykamol-cm8-mesh-table td {\n    border: 5px solid #fff;\n    padding: 8px 12px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-section-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-column-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 400;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-data-row td {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm8-mesh-table td {\n    text-align: left;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-bold {\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-spec-cell {\n    text-align: center;\n    vertical-align: middle;\n    font-weight: 700;\n    background: #fff;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-wykamol-cm8-mesh-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-wykamol-cm8-mesh-table th,\n    .pc-wykamol-cm8-mesh-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-section-title th {\n      font-size: 18px;\n      padding: 9px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-column-head th {\n      font-size: 16px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"pc-wykamol-cm8-mesh-table-wrap\"\u003e\n  \u003ctable class=\"pc-wykamol-cm8-mesh-table\" aria-label=\"Wykamol CM8 Mesh Waterproof Membrane Technical Data\"\u003e\n    \u003ccolgroup\u003e\n      \u003ccol style=\"width: 32%;\"\u003e\n      \u003ccol style=\"width: 24%;\"\u003e\n      \u003ccol style=\"width: 24%;\"\u003e\n      \u003ccol style=\"width: 20%;\"\u003e\n    \u003c\/colgroup\u003e\n\n    \u003cthead\u003e\n      \u003ctr class=\"pc-main-title\"\u003e\n        \u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-column-head\"\u003e\n        \u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\n        \u003cth\u003eResult\u003c\/th\u003e\n        \u003cth\u003eTest Standard\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n\n    \u003ctbody\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eMaterial\u003c\/td\u003e\n        \u003ctd\u003eHDPE\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eUnit Weight\u003c\/td\u003e\n        \u003ctd\u003e0.505 Kg\/m²\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eSheet Thickness\u003c\/td\u003e\n        \u003ctd\u003e0.6 mm\u003c\/td\u003e\n        \u003ctd\u003eEN 149-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eStud Height\u003c\/td\u003e\n        \u003ctd\u003e7mm\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eColour\u003c\/td\u003e\n        \u003ctd\u003eClear\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eWater Tightness 60 kPa; 24h\u003c\/td\u003e\n        \u003ctd\u003ePass\u003c\/td\u003e\n        \u003ctd\u003eEN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eWorking Temperature\u003c\/td\u003e\n        \u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eSoftening Temperature\u003c\/td\u003e\n        \u003ctd\u003e126°C\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eTensile Strength MD\u003c\/td\u003e\n        \u003ctd\u003e416 N\u003c\/td\u003e\n        \u003ctd\u003eBS 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eTensile Strength CD\u003c\/td\u003e\n        \u003ctd\u003e488 N\u003c\/td\u003e\n        \u003ctd\u003eBS 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eResistance To Static Loading\u003c\/td\u003e\n        \u003ctd\u003e\u0026gt;20 Kg\u003c\/td\u003e\n        \u003ctd\u003eBS 12730\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eCompressive Strength\u003c\/td\u003e\n        \u003ctd\u003e180 kN\/m²\u003c\/td\u003e\n        \u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eReaction To Fire\u003c\/td\u003e\n        \u003ctd\u003eClass F\u003c\/td\u003e\n        \u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eType Of Application\u003c\/td\u003e\n        \u003ctd\u003eType V\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eLife Expectancy\u003c\/td\u003e\n        \u003ctd\u003eLifetime of Structure\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr class=\"pc-section-title\"\u003e\n        \u003cth colspan=\"4\"\u003eEssential Characteristics\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-column-head\"\u003e\n        \u003cth\u003eEssential Characteristics\u003c\/th\u003e\n        \u003cth\u003ePerformance\u003c\/th\u003e\n        \u003cth\u003eTest Standard\u003c\/th\u003e\n        \u003cth\u003eHarmonised Technical Specification\u003c\/th\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eWater Tightness, 60 kPa; 24h\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003ePass\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 1928\u003c\/td\u003e\n        \u003ctd class=\"pc-spec-cell\" rowspan=\"10\"\u003eEN 13967: 2012 + A1 : 2017\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eResistance To Tearing\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12310-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eElongation (5%)\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eCompressive Creep (Resistance To Static Load)\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 13967 Annex B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eImpact Resistance\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN12691-2 Method A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eDurability Against Ageing\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eDurability Against Chemicals\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN1926 \/ EN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eFire Resistance\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eF\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 13501-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eJoint Tensile Shear Resistance\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12317-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eCompressive Strength\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003e180 kN\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eBS EN ISO 25619-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUnsound plaster, render or screed should be removed and surfaces made level. This can be achieved using\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-universal-mortar\" target=\"_blank\"\u003e\u003cstrong\u003eUniversal Mortar\u003c\/strong\u003e\u003c\/a\u003e, or a 3:1 sand:cement mix incorporating\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" target=\"_blank\"\u003e\u003cstrong\u003eRenderproof\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003eWaterproofing Additive.\u003c\/p\u003e\n\u003cp\u003eLeave all new works to dry thoroughly before any membranes are fixed.\u003c\/p\u003e\n\u003cp\u003eIn case of walls suffering from mould or masonry fungi, prior to fixing the membrane, remove surface contamination by brushing, then apply a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/masonry-dry-rot-treatment\" target=\"_blank\"\u003e\u003cstrong\u003eMasonry Biocide\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ein line with the relevant Technical Data Sheet\u003c\/p\u003e\n\u003cp\u003eIf Dry Rot (Serpula Lacrymans) is present in the walls, this will require detailed assessment before proceeding.\u003c\/p\u003e\n\u003cp\u003eAbove ground level it is recommended, that where possible, all sources of moisture are alleviated at the source using a DPC such as\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-cream-dampsolve\" target=\"_blank\"\u003e\u003cstrong\u003eDampSolve\u003c\/strong\u003e\u003c\/a\u003e, before applying Platinum CV8 Mesh Membrane. This reduces potential damage to masonry and timber etc.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eWe recommend an application of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e to the concrete walls, before an application of CV8 Mesh Membrane, to prevent lime efflorescence and dusting, which can block perimeter drainage channels.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication on Walls:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 Mesh is fixed with the studs against the wall to create an air \/ depressurisation gap.\u003c\/p\u003e\n\u003cp\u003eThe membrane can be fixed either vertically or horizontally. However as this product is not available in 2.4M height and also due to the heavy weight of the material, most fixing of Platinum CV8 Mesh will be \u003cstrong\u003eVertical\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhen making this decision, you will need to take into account the size of the area to be lined, and the height of the walls relative to the width of the membrane.\u003c\/p\u003e\n\u003cp\u003eHorizontal Fixing requires less cuts and jointing but the full roll is very heavy at first. Vertical fixing has much lighter strips to fix, but requires that each of these is taped back together again. You may find that vertical fixing is easier, but requires more \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWaterseal Tape\u003c\/strong\u003e\u003c\/a\u003e for jointing.\u003c\/p\u003e\n\u003cp\u003eThe membrane is fixed to the wall using \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-brick-plugs\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003ePlace the membrane in position as level as you can judge by eye. Using a 10mm drill bit, drill through the centre of a stud near the top and edge to a depth greater than the fixing.\u003c\/p\u003e\n\u003cp\u003eThe fixing is then hammered into the pre-drilled hole until the plug sits flush in the stud. The rubber washer re-seals the hole. Level the membrane using the spirit level or laser level if used, and fix another plug about 2 metres along at the top of the sheet. The membrane will now be hanging level to the wall.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing horizontally, continue fixing every 2 metres until you have reached the end of the roll or you have covered all of the wall(s) to be treated. It is very important to regularly check the level. If the membrane is not level, you may well find that the membrane is kinked and looks unsightly, it will also dive down when fitted around corners.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing Vertically, hang each subsequent sheet by the two fixings as described above. The subsequent sheet is joined by overlapping the edge of one sheet by another underneath by a minimum of 2 studs. Fix Brick Plugs \u0026amp; Seals through the studs as close as possible to the edge of the membrane.\u003c\/p\u003e\n\u003cp\u003eApply \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/mesh-membrane-tape\" target=\"_blank\"\u003ePlatinum Mesh Tape\u003c\/a\u003e \u003c\/strong\u003ealong the joint with equal overlaps of the tape onto each sheet of membrane and press firmly into place.\u003c\/p\u003e\n\u003cp\u003eApply more pressure with the palm of your hand to further seal the whole of the joint. A Hot Air Gun should be used to help sealing, especially in cold or damp conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFixing Centres:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFix in a square at 350mm centres, and then fix a plug in the centre of four fixings so it looks like a 5 on a dice.\u003c\/p\u003e\n\u003cp\u003eAll fixings will then be a maximum of 250mm centres.\u003c\/p\u003e\n\u003cp\u003eOn very flat walls, the horizontal and vertical centres can be moved out to 400mm so when the centre plug is fixed, the centres are not more than 300mm.\u003c\/p\u003e\n\u003ch5\u003eFinishing\u003c\/h5\u003e\n\u003cp\u003ePlatinum CV8 Mesh Membrane can be plastered or rendered, or can be plasterboarded using a dab fix.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePlasters:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe recommended plaster to be applied to Platinum CV8 Mesh is Tarmac Whitewall which should be in two coats when applied to Platinum Mesh Membranes.\u003c\/p\u003e\n\u003cp\u003eThe plasters can accept a finishing 3mm skim coat to finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Manufacturers recommended drying times may vary according to atmospheric conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCement Based Renders:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor internal cement renders the mix should be six parts clean sharp sand \/ one part lime \/ one part cement. A two-coat application is recommended allowing 7-10 days between coats.\u003c\/p\u003e\n\u003cp\u003eDrying time is important because shrinkage cracks may appear.\u003c\/p\u003e\n\u003cp\u003eA weaker mix of seven or even eight parts sand can be used for the second coat.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHydraulic Lime Based Mortars:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eFirst Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUsing a ratio of 1 part Lime to 2½ - 3 parts sharp washed sand with evenly distributed hair throughout the mortar and working to a layer of 10mm thick, push the plaster into and across the pre-wet laths at a 45 degree angle to the lathes.\u003c\/p\u003e\n\u003cp\u003eThe plaster should be correctly cured until hard\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSecond Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe second coat also known as the intermediate or float coat will be applied similar to the first coat only without any hair being added to the mortar.\u003c\/p\u003e\n\u003cp\u003eYou must ensure you wet down the first coat with a fine mist before spreading a 7mm coat, before scratching up and leaving in preparation of the finish coat.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFinish Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eFor the final top coat a fine mix of 1 part lime putty to 2 parts well graded super fine sand. Remembering to wet down the surface before application with a fine mist spray.\u003c\/p\u003e\n\u003cp\u003eAllow time for the water to absorb into the plaster then apply a coat of approximately 5mm, then rule off and leave for a couple of hours.\u003c\/p\u003e\n\u003cp\u003eWhen ready, rub up the finish coat using a plastic or wooden trowel to bring back the fat until the required finish has been reached in the case of any light crazing this can be rubbed up and trowelled out.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGeneral Plastering \u0026amp; Rendering Considerations:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All plasters and renders etc. must be to a minimum total depth of 15mm.\u003c\/p\u003e\n\u003cp\u003eThe undercoat should be applied with firm pressure to ensure the product is fully pushed behind the mesh so that the studs are fully filled, and to an approximate thickness of 5mm and be well scratched with a wire scratcher.\u003c\/p\u003e\n\u003cp\u003eWhen the scratch coat has set, the floating coat should be applied to a depth of 7mm and lightly scratched to provide a firm key for the final coat, which should be to a minimum thickness of 3mm.\u003c\/p\u003e\n\u003cp\u003eAll plasters and renders should be applied strictly in accordance with the manufacturer’s instructions, and good plastering \/ rendering practice as described in BS5492 and BS5262 Code of Practice.\u003c\/p\u003e\n\u003cp\u003eDo not apply decoration until the plaster or render is thoroughly dry.\u003c\/p\u003e\n\u003cp\u003eIf any special renders or plasters are to be considered, technical advice must be sought from the Company’s technical department.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCuring:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Cement and Lime based mortars require curing. Curing is the process of keeping a mortar or render under a specific environmental condition until the chemical set (referred to as hydration) is sufficient to withstand the environment into which the mortar has been placed.\u003c\/p\u003e\n\u003cp\u003eLime binders are generally weaker than cements taking longer to acquire their strength and hardness, leaving them potentially more vulnerable for a longer period than cement equivalents, and curing them once placed is simply regarded as best practice.\u003c\/p\u003e\n\u003cp\u003eGood curing is typically considered to be that of providing a humid environment stimulating full hydration of the lime or cement binders, providing strength development along with other benefits, especially the ability to withstand hairline cracking.\u003c\/p\u003e\n\u003cp\u003eThe most common cause of failure is allowing a mortar \/ render to dry out too quickly, impeding the chemical process for hydration, stressing the mortar resulting in cracking.\u003c\/p\u003e\n\u003cp\u003eStandard practice for protecting cement or lime based renders\/mortars is with wet \/ dampened hessian sheeting draped over the area in relatively close proximity to the render. This should be left in place for at least a week and is a standard requirement that is required in all cases.\u003c\/p\u003e\n\u003cp\u003eDuring the warmer months, the hessian will need to be repeatedly wetted and\/or covered with plastic sheeting to ensure the correct curing environment.\u003c\/p\u003e\n\u003cp\u003eCuring should be of at least 7 days.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDry Lining:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV8 Mesh can be effectively used in conjunction with dry lining by dab fixing the plasterboard using a proprietary dabbing compound.\u003c\/p\u003e\n\u003cp\u003eBe careful when installing laminated or insulated plasterboard, as when they are dot \u0026amp; dabbed to Platinum Meshed membranes, building regulations require two mechanical fixes to each laminated board. These fixings may breach the membrane which cannot be repaired.\u003c\/p\u003e\n\u003cp\u003eWhere insulation is required to the wall build, we recommend to use a \u003cstrong\u003eNON-MESHED Membrane\u003c\/strong\u003e (such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/basement-waterproof-tanking-membrane-cv8\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum CV8\u003c\/strong\u003e\u003c\/a\u003e) and use an independent dry-lining frame.\u003c\/p\u003e\n\u003cp\u003eHouse the insulation within the frame and plasterboard over.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data Sheet:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eComing Soon\u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP):\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_GT8_GEOTEX_MEMBRANE_DOP_100x100.jpg?v=1573558472\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Platinum Building Chemicals Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":8174677033059,"sku":"BWMCV8M","price":202.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.0M x (L) 10M (20M²)","offer_id":8174678311011,"sku":"BWMCV8M-10","price":122.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platinum-cv8-mesh-basement-tanking-membrane-8mm-stud-w-2-0m-x-l-20m-40m-waterproof-membranes-125.webp?v=1780916646"},{"product_id":"basement-floor-membrane-20mm-cv20","title":"Platinum CV20 - Basement Tanking Floor Membrane (20mm Stud)","description":"\u003cp\u003e\u003cspan\u003ePlatinum CV20 is a High Quality, 20mm Stud, Cavity Drain Basement Waterproofing Floor Membrane made from High Density Polyethylene (HDPE).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003ePlatinum CV20 is used as a high drainage capacity floor membrane and is generally specified where it is anticipated that there may be a risk of severe water penetration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSupplied in \u003cstrong\u003e2.07M x 10M (20M²) Rolls\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003ePlatinum CV20 Cavity Drain Floor Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003ePlatinum CV20 is a Cavity Drain Waterproofing Membrane made from High Density Polyethylene (HDPE).\u003c\/p\u003e\n\u003cp\u003eWith its 20mm deep stud profile, Platinum CV20 is used as a high drainage capacity floor membrane and is generally specified where it is anticipated that there may be a risk of severe water penetration.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV20 is guaranteed against deterioration for 30 years, with a life expectancy of at least the design life of the building (DIN 9001:2000).\u003c\/p\u003e\n\u003cp\u003ePlatinum CV20 is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalies, saline solutions and organic acids, and not affected by minerals and hydro-carbons. It is also impervious to root penetration, is rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003ePart of a Type C Cavity Drain Membrane System in Line With BS8102:2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGives a High Water Void Volume of 14 Litres\/m²\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuick to Install - Easy to Roll Out Along Floors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCreates a Dry, Habitable Living Space in Areas Previously Suffering From Damp \/ Wet Conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasily Cut Down Using a Sharp Blade\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaterproof, Salt Inhibiting, Root and Contaminate Resistant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLittle or No Damage to the Existing Structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow and High Temperature Tolerance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh Grade Material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:5px 17px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:5px 17px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-w2ns{font-weight:bold;font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-adon{font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-areh{font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-4mat{background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-nq8p{font-weight:bold;font-size:14px;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-npxk{font-size:14px;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-hx3s{font-weight:bold;font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-ne7e{font-weight:bold;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003eHigh Density Polyethylene (HDPE)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003eUnit Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003e1kg\/m²\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w2ns\"\u003eStud Height\u003c\/td\u003e\n\u003ctd class=\"tg-adon\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eColour\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eWater Tightness - 60 kPa; 24h (EN 1928)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003ePass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e-50°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e126°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eTensile Strength MD (BS 12311-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e416 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eTensile Strength CD (BS 12311-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e488 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eResistance to Static Loading (BS 12730)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e\u0026gt;20 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eCompressive Strength (BS EN ISO 25619-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e170 kN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eReaction to Fire (BS EN 13501-1 :2007+A1:2009)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003eClass E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eType of Application\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003eType V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-ne7e\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd class=\"tg-4mat\"\u003eLifetime of Structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV20 should only be used on floors. Before the system is installed, the area must be assessed to determine what preparation is required:\u003c\/p\u003e\n\u003cp\u003eAll timber and other organic material must be removed to prevent risk of fungal or bacterial growth behind the System. If evidence of rot exists, this must be dealt with by a specialist contractor prior to installation of the system (See our \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/dry-rot-wood-treatment\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/dry-rot-wood-treatment\" target=\"_blank\"\u003e\u003cstrong\u003eWoodworm \u0026amp; Dry Rot Control\u003c\/strong\u003e\u003c\/a\u003e Products).\u003c\/p\u003e\n\u003cp\u003eBrush the floor clean and remove any sharp protrusions. Fill all non-structural cracks above 1mm wide, all structural cracks should be repaired or treated.\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-fragment=\"1\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e which prevents free lime from the curing concrete being drawn out by ingressing water.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen used in a full or part earth-retaining situation, the membrane system must be drained. To comply with BS 8102:2009, you must assume that the structure will be subjected to water ingress at some time.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMethods Of Drainage:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe drainage must effectively remove all water from below the membrane and take the water to a point of discharge such as a \u003cstrong\u003eSump Chamber\u003c\/strong\u003e or a form of safe natural drainage. Standing water can block the membrane with silt or lime scale so it is important for water to flow uninterrupted to the drainage point.\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/pages\/basement-drainage-systems\" target=\"_blank\"\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eBasement Drainage Channel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cp\u003ePlatinum Chemicals supply a range of \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/pages\/basement-drainage-systems\" target=\"_blank\"\u003e\u003cstrong\u003eBasement Channel Systems\u003c\/strong\u003e\u003c\/a\u003e which include \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/newton-basedrain\" target=\"_blank\"\u003e\u003cstrong\u003eNewton Basedrain\u003c\/strong\u003e\u003c\/a\u003e, \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003ePlaton Aqua Channel\u003c\/strong\u003e\u003c\/a\u003e and \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Waterguard\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eThe Channel System is placed at the wall \/ floor junction and collects water from behind the wall membrane and receives water at the wall \/ floor junction. It is a designed method of removing water as it can interface with sump chambers, gullies, waste pipes etc.\u003c\/p\u003e\n\u003cp\u003eIt can also be maintainable by inserting Jetting Eyes \/ Rodding Eyes into the system. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIt is very rare for water to pass through a solid concrete slab or concrete raft, but where the slab or raft is of questionable quality it is possible for water to pass through cracks in a poorly constructed floor. If the quality of the slab is questionable, Platinum CV20 should be used as the floor membrane.\u003c\/p\u003e\n\u003cp\u003eStarting at one side of the room, unroll the membrane with the studs down and cut to fit the room as one would a carpet. The next membrane width is rolled out so that the flanged edge overlaps onto the edge of the previous roll of membrane. Clean both edges.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-sealing-tape\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Tape\u003c\/strong\u003e\u003c\/a\u003e is then applied to the high flat area between the first two studs at the edge of the previous roll of membrane with the backing paper still intact.\u003c\/p\u003e\n\u003cp\u003eCheck the two widths for alignment, with the flange covering the backing paper.\u003c\/p\u003e\n\u003cp\u003eStarting from the end of the joint, remove the backing paper and press down on the joint sealing the two sections together. This process is repeated until all areas are covered. Seal the Platinum CV20 Membrane to the up-stand of the \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/pages\/basement-drainage-systems\" target=\"_blank\"\u003e\u003cstrong\u003ePerimeter Drainage Channel\u003c\/strong\u003e\u003c\/a\u003e with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/basement-membrane-corner-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Corner Strip \/ Overtape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eWhere the floor membrane is required to be jointed to horizontal DPC’s through internal and external walls, these joints should be sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Tape\u003c\/strong\u003e\u003c\/a\u003e. Ensure both surfaces are clean and dry before attempting to make these joints.\u003c\/p\u003e\n\u003cp\u003eIf there are any services up through the floor, the membrane can be cut and trimmed around them, and the gap filled and sealed using a high quality MS or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/hybrid-polymer\" target=\"_blank\"\u003e\u003cstrong\u003eSMX Polymer Adhesive\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIf necessary, a patch of membrane or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" target=\"_blank\"\u003e\u003cstrong\u003ePlain DPC\u003c\/strong\u003e\u003c\/a\u003e is laid over and sealed to the service with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterseal-sealing-rope\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Rope\u003c\/strong\u003e\u003c\/a\u003e, and around its perimeter with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/tanking-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003ePlatinum Waterseal Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIt should be noted that protrusions through the floor slab\/raft should be avoided wherever possible as they create weaknesses that allow unnecessary water ingress.\u003c\/p\u003e\n\u003cp\u003eThe specified floor finish can now be laid directly over the floor membrane, which must not be punctured by any fixings through the floor. When a timber floor finish is preferred you must allow an expansion gap around the wall edge.\u003c\/p\u003e\n\u003cp\u003eSpeak to the supplier of the floor finish to confirm the correct size of this expansion gap.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV20_WATERPROOF_MEMBRANE_TECH_c7ec9f4c-a193-4f10-9a59-a9265f92c75c.pdf?5187181409182079806\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV20_WATERPROOF_MEMBRANE_TECH_c7ec9f4c-a193-4f10-9a59-a9265f92c75c.pdf?5187181409182079806\" target=\"_blank\"\u003e\u003cimg src=\"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV20_MEMBRANE_TECH_2a0ffbf3-bd35-4c7a-bf42-18d696d51163_small.jpg?v=1539349260\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV20_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP):\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV20_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cstrong\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_GT8_GEOTEX_MEMBRANE_DOP_100x100.jpg?v=1573558472\" alt=\"\"\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Platinum Building Chemicals Ltd","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":8174704558179,"sku":"BWMCV20","price":210.0,"currency_code":"GBP","in_stock":false},{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":8174707998819,"sku":"BWMCV20-10","price":129.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platinum-cv20-basement-tanking-floor-membrane-20mm-stud-w-2-07m-x-l-20m-40m-waterproof-membranes-684.webp?v=1780398310"},{"product_id":"basement-waterproof-membrane-cv3","title":"Platinum CV3 - Cavity Drain Waterproof Membrane (3mm Stud)","description":"\u003cp\u003ePlatinum CV3 Waterproof Membrane is a clear HDPE cavity drain membrane with a compact 3mm stud profile, developed for Type C drained protection on suitable below-ground walls, floors, tunnels and vaulted ceilings.\u003c\/p\u003e\n\u003cp\u003eAvailable in 2m x 20m and 2m x 10m rolls, covering 40m² or 20m², CV3 separates protected internal finishes from damp, salts and water-affected substrates. Its shallow cavity is especially useful where headroom, floor depth or wall build-up is restricted.\u003c\/p\u003e\n\u003cp\u003eCV3 is declared as a Type V sheet to BS EN 13967:2012+A1:2017 and can contribute to a maintainable BS 8102:2022 Type C system when combined with sealed Platinum joints, AquaTrack drainage, a suitable gravity outlet or AquaSump arrangement, protected finishes, ventilation and planned maintenance. It is not resistant to hydrostatic pressure as a standalone sheet, so drainage capacity and every junction, fixing and penetration must be designed correctly.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch2\u003e\n\u003cstrong\u003eKey Features Of Platinum CV3 Waterproof Membrane\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ Low-profile 3mm studded membrane preserves valuable headroom, floor depth and internal space in restricted basement, cellar and refurbishment details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for Type C waterproofing on appropriate earth-retained walls, concrete floors, tunnels, arched structures and vaulted ceilings.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Clear HDPE construction provides a durable barrier between water-affected substrates and protected internal wall or floor finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Published performance includes watertightness at 60kPa for 24 hours, 250kN\/m² compressive strength and a working range from -50°C to +80°C.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Available exclusively in clear 2m x 20m and 2m x 10m rolls, providing nominal coverage of 40m² or 20m².\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e3mm Cavity Drain Membrane For Type C Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV3 is a low-profile internal cavity drain membrane for projects where a deeper membrane would consume valuable floor depth, headroom or internal wall space. Manufactured from high-density polyethylene, the regular 3mm studs create a defined separation layer between the existing structure and the protected internal finish. Moisture entering through the substrate can move within this cavity instead of remaining trapped behind plasterboard, screed, flooring or decorative finishes. CV3 may be specified on suitable earth-retained walls, floors, tunnels, archways and vaulted cellar ceilings as part of a coordinated Type C system. Its compact profile is especially practical around stairs, low ceilings, door openings, narrow passages and other restricted refurbishment details. The sheet can be cut with a sharp utility knife, scissors or shears, but its final performance still depends on accurate positioning, sealed fixings, correctly taped butt joints and an uninterrupted route to drainage.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eControlled Drainage With Platinum AquaTrack\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eCV3 manages water rather than attempting to resist hydrostatic pressure at the internal face of the structure. Its studded cavity creates a depressurisation and drainage space that must connect to a collection and discharge route. At wall-to-floor junctions, Platinum AquaTrack Drainage Channel can collect water from behind the wall membrane and direct it towards a gravity outlet or AquaSump chamber. AquaTrack Floor Drain Channel may be used across floors, at thresholds or to connect perimeter runs with the chosen outlet. Where gravity drainage is unavailable, pumps, alarms and suitable resilience measures must be selected for the anticipated water volume and consequence of failure. The system remains maintainable only when inspection ports, channels, sump covers and mechanical equipment remain accessible. CV3 must therefore never be treated as an isolated waterproof sheet: the membrane, jointing, channel layout, discharge capacity and servicing provisions must be designed together before finishes conceal the work.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eVersatile Protection For Walls, Floors And Vaulted Structures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV3 can be used on suitable earth-retained walls, concrete floors, tunnels, archways and vaulted ceilings within a project-specific Type C design. Suitable wall substrates include sound concrete, brick, blockwork, stone and compatible masonry capable of retaining the specified mechanical fixings. On walls, CV3 may support treated timber battens, an independent dry-lining frame, a compatible proprietary metal lining or a properly detailed masonry lining. On floors, the membrane is installed studs down and protected by suitable tongue-and-groove board, closed-cell insulation with a compatible covering, or the specified reinforced concrete or screed. Arched and vaulted ceilings must provide a dependable fall so water cannot pond behind the membrane. Every detail must preserve cavity continuity and drainage. Hazardous chemicals, unknown industrial residues, active structural movement and unstable backgrounds require specialist project-specific assessment rather than reliance on general product-resistance statements.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable HDPE For Demanding Below-Ground Conditions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePlatinum CV3 is manufactured from clear HDPE and is intended to remain protected behind the selected wall or floor finish. Published data records a unit weight of 500g\/m², 0.6mm sheet thickness, 3mm stud height, tensile strengths of 416N in the machine direction and 488N across the sheet, resistance to static loading above 20kg and compressive strength of 250kN\/m². The membrane passes the declared watertightness test at 60kPa for 24 hours and has a working temperature range from -50°C to +80°C. These characteristics support use in protected basement wall and floor build-ups, but careful handling remains essential. Crushed studs, punctures, open butt joints, damaged tapes, ultraviolet exposure or uncontrolled penetrations by later trades can interrupt the cavity or create a path around the membrane. Each defect must be prevented, identified during inspection or repaired before the membrane is concealed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned To Support Grade 3 Internal Environments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eCV3 can contribute to dry Grade 3 conditions when it forms part of a designed Type C waterproofing system, but the environmental grade is achieved by the complete waterproofing strategy rather than the membrane alone. BS 8102:2022 design must consider the structure, groundwater risk, anticipated ingress, channel capacity, sump volume, pump duty, discharge route, alarm provision, power-loss resilience, ventilation and intended use. Combined forms of protection should be considered where the risk assessment, construction or consequence of failure warrants additional resilience. Heating, ventilation and humidity control also require attention because the membrane has high vapour resistance and may increase interstitial-condensation risk when placed on the cold side of insulation. Competent waterproofing design, careful installation, pre-concealment inspection and planned servicing are essential if the completed space is to achieve and retain its intended internal environment throughout the system’s working life.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eLong-Term Protection With Flexible Finishing Options\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003ePublished product information gives Platinum CV3 a life expectancy equal to the structure when the membrane is correctly installed, protected and incorporated into a functioning drainage arrangement. Wall finishes may include plasterboard on treated timber battens secured into Platinum Waterseal Brick Plugs, compatible proprietary metal systems, independent dry-lining frames or a suitably restrained internal masonry lining. Floor protection may use tongue-and-groove board, supported timber flooring, Newton Fibran XPS 500-C, Wykamol High Load closed-cell insulation within an approved load-checked build-up, or reinforced concrete or screed of the specified thickness. The chosen construction must protect the membrane from impact and fire, prevent uncontrolled punctures, avoid compressing the drainage cavity and accommodate ventilation and thermal requirements. AquaTrack channels, inspection ports, AquaSump chambers, pumps and alarms must remain accessible because maintainability is fundamental to long-term Type C waterproofing performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_1_412d34bb-35a4-4ed8-b73a-53aab51038c5_1024x1024.png?v=1787049548\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Build-Up:\u003c\/strong\u003e The compact 3mm profile preserves valuable headroom, floor depth and room area around stairs, low ceilings, narrow passages and restricted refurbishment details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManaged Type C Drainage: \u003c\/strong\u003eCreates a controlled cavity that directs water towards AquaTrack drainage while isolating protected internal finishes from damp or water-affected substrates.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Surface Removal: \u003c\/strong\u003eCan isolate sound damp, salty or water-affected backgrounds without unnecessary hacking off, provided loose, organic and structurally unsuitable materials are removed first.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFast Mechanical Installation: \u003c\/strong\u003eLightweight HDPE cuts easily and can be positioned efficiently using Platinum Brick Plugs, Corner Tape, Waterseal Rope and compatible detailing accessories.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRestricted-Space Solution: \u003c\/strong\u003eThe shallow profile simplifies waterproofing around thresholds, low soffits, staircases and narrow routes where a deeper cavity would reduce usable dimensions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWall And Floor Coordination:\u003c\/strong\u003e Platinum jointing products and AquaTrack components help maintain one continuous, accessible waterproofing route across compatible walls, floors and junction details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResistance To Damp And Salts: \u003c\/strong\u003eProvides effective separation from liquid water, water vapour and substrate salts when correctly sealed, drained and protected behind compatible finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Load Performance: \u003c\/strong\u003ePublished static-load and compressive-strength data support suitable protected floor build-ups when the complete construction is properly designed, supported and load checked.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDocumented Watertightness: \u003c\/strong\u003eDeclared performance records a pass at 60kPa for 24 hours to EN 1928, supporting specification within the product’s tested application.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintainable Waterproofing:\u003c\/strong\u003e Compatible channels, inspection ports, sumps, pumps and alarms create a water-management system that can be inspected, cleaned, monitored and routinely serviced.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Internal Finishes: \u003c\/strong\u003eCan be protected behind battens, independent frames, proprietary linings, internal masonry, flooring boards, insulation or correctly specified reinforced screed and concrete.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTwo Clear Roll Sizes:\u003c\/strong\u003e Available exclusively in clear 40m² and 20m² rolls, allowing quantities to be planned around both compact details and larger areas.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong Service Life: \u003c\/strong\u003ePublished data states life expectancy equal to the structure when CV3 remains correctly installed, protected, drained and incorporated into a maintained system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRecyclable Material: \u003c\/strong\u003eManufactured from polyethylene that can be recycled, subject to clean recovery and suitable recycling facilities being available when the membrane is eventually removed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing: \u003c\/strong\u003eProvides low-profile Type C protection to suitable retaining walls and floors with designed AquaTrack drainage, safe discharge and accessible maintenance provisions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions:\u003c\/strong\u003e Preserves headroom and usable floor area while separating new protected finishes from damp, salty or water-affected masonry in correctly drained cellar refurbishments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Walls:\u003c\/strong\u003e Isolates internal linings from damp or salt-affected concrete, brick, blockwork, stone and compatible masonry capable of retaining the specified sealed fixings.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConcrete Floors: \u003c\/strong\u003eSupports low-profile floor waterproofing over suitable level concrete within a drained, protected and load-checked build-up designed for the intended imposed loads.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Cellars: \u003c\/strong\u003eProvides cavity drainage to arched or vaulted ceilings where sealed overhead fixings prevent sagging and preserve a continuous fall towards drainage.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTunnels And Archways: \u003c\/strong\u003eEnables low-profile internal water management in underground passages and arched structures where limited clearance makes a compact membrane cavity particularly useful.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlant And Utility Rooms: \u003c\/strong\u003eProtects suitable below-ground service spaces where maintainable channels, dependable discharge, accessible pumping equipment and high-water warning arrangements are included.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial Below-Ground Areas: \u003c\/strong\u003eSupports offices, stores and service rooms requiring project-specific waterproofing coordinated with ventilation, humidity control, protected finishes and planned drainage maintenance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLow-Headroom Areas: \u003c\/strong\u003eAccommodates stairs, thresholds, low soffits, narrow corridors and shallow floor zones where the 3mm profile offers an advantage over deeper membranes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 System Designs: \u003c\/strong\u003eContributes to complete waterproofing systems intended for dry internal environments when drainage, resilience, ventilation, inspection access and maintenance are properly coordinated.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Design:\u003c\/strong\u003e CV3 can form part of a drained protection system designed in accordance with the current code of practice. Compliance applies to the complete design and installation, not the membrane alone.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 Internal Environment: \u003c\/strong\u003eCV3 can contribute to Grade 3 conditions where dampness and water penetration are unacceptable, provided the complete waterproofing, drainage, ventilation and maintenance strategy is correctly designed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS EN 13967:2012+A1:2017:\u003c\/strong\u003e The Platinum CV3 Declaration of Performance identifies the membrane as a Type V sheet and lists the declared essential characteristics.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePublished Test Data:\u003c\/strong\u003e Product information records watertightness to EN 1928, tensile strength to BS EN 12311-2, static loading to BS 12730 and compressive strength to BS EN ISO 25619-2.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReaction-To-Fire Classification: \u003c\/strong\u003eThe Declaration of Performance records Class E to EN 13501-1:2007+A1:2009. The complete wall or floor build-up must satisfy current Building Regulations.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCertification-Led Specifications: \u003c\/strong\u003eIf a \u003cstrong\u003eBBA Certificate\u003c\/strong\u003e is required, opt for \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm3-waterproof-membrane\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM3 Waterproof Membrane\u003c\/strong\u003e\u003c\/a\u003e or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-cdm-503-waterproof-membrane\" target=\"_blank\"\u003e\u003cstrong\u003eNewton CDM 503 Waterproof Membrane\u003c\/strong\u003e\u003c\/a\u003e instead.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLife Of The Structure: \u003c\/strong\u003ePublished Platinum CV3 product data states a life expectancy equal to the structure when the membrane is correctly installed, protected and maintained within a functioning system.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV3 performs by maintaining a shallow studded cavity between the water-bearing structure and the protected internal finish. Water entering through the background can move within this cavity towards AquaTrack, Floor Drain, a gravity outlet or AquaSump chamber instead of remaining trapped behind plasterboard, flooring, screed or decoration. This managed-drainage principle defines Type C waterproofing and accommodates changing groundwater conditions when the complete system has sufficient capacity.\u003c\/p\u003e\n\u003cp\u003eThe 3mm stud profile minimises wall and floor build-up where usable space is restricted. CV3 is therefore particularly helpful around low ceilings, stairs, thresholds, reveals, narrow passages and compact floor constructions. The shallow cavity must remain clean and continuously connected to drainage because mortar, drilling dust, lime deposits, silt, crushed studs or standing water can reduce the available route more quickly than in a deeper membrane cavity.\u003c\/p\u003e\n\u003cp\u003eThe clear HDPE sheet provides durable separation between internal finishes and damp, salts or water-affected substrates. Its high water-vapour resistance can help isolate the new internal construction from the background, while the transparent sheet also allows the installer to see substrate features and fixing positions during installation. Hazardous chemicals or unknown industrial residues require specialist investigation and a project-specific materials assessment before they are concealed.\u003c\/p\u003e\n\u003cp\u003eInstallation is comparatively quick when carried out by an experienced cavity-drain contractor. The membrane can be fixed to walls, loose-laid studs down on floors and fitted to properly falling vaults. It has no curing period, allowing follow-on work after the joints, fixings, drainage connections and details have been inspected and tested. Repair mortars, concrete, screeds and other wet-applied materials must still reach the condition required by their own instructions.\u003c\/p\u003e\n\u003cp\u003ePublished performance includes watertightness at 60kPa for 24 hours, tensile strengths of 416N and 488N, resistance to static loading above 20kg and compressive strength of 250kN\/m². The stated working range is -50°C to +80°C. These figures support specification within their respective tests but do not replace project-specific assessment of loading, water volume, channel capacity, substrate stability or final use.\u003c\/p\u003e\n\u003cp\u003eFor the building owner, the principal benefit is the potential to create dry, usable space within a maintainable waterproofing system. Grade 3 performance is produced by the complete design rather than CV3 alone. The structure, membrane, sealed details, AquaTrack layout, gravity or pumped discharge, alarms, power resilience, ventilation, protected finishes, inspection access and planned servicing must continue to operate together throughout the installation’s working life.\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-platinum-cv3-tech-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-platinum-cv3-tech-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-platinum-cv3-tech-table {\n    width: 100%;\n    min-width: 900px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-tech-table th,\n  .pc-platinum-cv3-tech-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-platinum-cv3-tech-table .pc-feature-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-platinum-cv3-tech-table-swipe {\n      display: block;\n    }\n\n    .pc-platinum-cv3-tech-table {\n      min-width: 820px;\n      font-size: 14px;\n    }\n\n    .pc-platinum-cv3-tech-table th,\n    .pc-platinum-cv3-tech-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-platinum-cv3-tech-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-platinum-cv3-tech-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-platinum-cv3-tech-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cp class=\"pc-platinum-cv3-tech-table-swipe\"\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv class=\"pc-platinum-cv3-tech-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-platinum-cv3-tech-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 36%;\"\u003e \u003ccol style=\"width: 18%;\"\u003e \u003ccol style=\"width: 22%;\"\u003e \u003ccol style=\"width: 24%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" colspan=\"2\" scope=\"col\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eResult\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSheet Thickness\u003c\/th\u003e\n\u003ctd\u003e0.6mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Height\u003c\/th\u003e\n\u003ctd\u003e3mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Centres\u003c\/th\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eAir Gap Volume\u003c\/th\u003e\n\u003ctd\u003e2.19 litres\/m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e500g\/m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eColour\u003c\/th\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003ePlatinum Chemicals Roll Sizes\u003c\/th\u003e\n\u003ctd\u003e2m x 10m and 2m x 20m\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eNominal Roll Coverage\u003c\/th\u003e\n\u003ctd\u003e20m² and 40m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWater Vapour Resistance\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;3020MNs\/g\u003c\/td\u003e\n\u003ctd\u003ePublished product data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWorking Temperature\u003c\/th\u003e\n\u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSoftening Temperature\u003c\/th\u003e\n\u003ctd\u003e126°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Machine Direction\u003c\/th\u003e\n\u003ctd\u003e416N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Cross Direction\u003c\/th\u003e\n\u003ctd\u003e488N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eResistance To Static Loading\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;20kg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eReaction To Fire\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eDeclared Type\u003c\/th\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eLife Expectancy\u003c\/th\u003e\n\u003ctd\u003eLife of the structure when correctly installed and protected\u003c\/td\u003e\n\u003ctd\u003ePublished product data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eEssential Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eEssential Characteristic\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eHarmonised Technical Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eResistance To Tearing\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12310-1\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eElongation at 5%\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12311-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Creep \/ Resistance To Static Load\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 13967 Annex B\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eImpact Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12691-2 Method A\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Ageing\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Chemicals\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eReaction To Fire\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eJoint Tensile Shear Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12317-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-platinum-cv3-ancillary-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-platinum-cv3-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-platinum-cv3-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-ancillary-table th,\n  .pc-platinum-cv3-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-product-cell,\n  .pc-platinum-cv3-ancillary-table .pc-product-cell a {\n    color: #111;\n    font-weight: 700;\n    text-align: left;\n  }\n\n  .pc-platinum-cv3-ancillary-table .pc-product-cell a {\n    text-decoration: underline;\n    text-underline-offset: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-platinum-cv3-ancillary-table-swipe {\n      display: block;\n    }\n\n    .pc-platinum-cv3-ancillary-table {\n      min-width: 720px;\n      font-size: 14px;\n    }\n\n    .pc-platinum-cv3-ancillary-table th,\n    .pc-platinum-cv3-ancillary-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-platinum-cv3-ancillary-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-platinum-cv3-ancillary-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-platinum-cv3-ancillary-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-platinum-cv3-ancillary-table-wrap\" role=\"region\"\u003e\n\u003ctable class=\"pc-platinum-cv3-ancillary-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 74%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"2\" scope=\"colgroup\"\u003ePlatinum CV3 Waterproof Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-waterseal-brick-plugs-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Waterseal Brick Plugs With Seals\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePrimary sealed plugs for securing CV3 to sound brick, block, stone or concrete walls. The fitted washer must compress against the membrane to seal the fixing, while the central core accepts a suitable screw for compatible secondary fixings.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-brick-plugs-without-seals-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Brick Plugs Without Seals\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eAlternative fixing plugs used with a compressed ring of Platinum Waterseal Rope where a separate butyl seal is preferable, including selected overhead, curved, vaulted or irregular details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/evolution-sds-drill-bit-10mm\" rel=\"noopener\" target=\"_blank\"\u003eEvolution 10mm SDS Plus Masonry Drill Bit\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSuitable diameter for standard Platinum Waterseal Brick Plug holes in compatible masonry. Confirm drilling depth, substrate condition and any longer specialist fixing required before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-corner-tape-butyl-membrane-jointing-tape\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Corner Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWide single-sided butyl tape used as the principal CV3 joint seal. Centre the 150mm tape over clean, closely butted sheet edges; it is also used at compatible wall-to-floor junctions, corners, reveals and repairs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-waterseal-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Waterseal Rope\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eFlexible butyl rope for separately sealed plugs, irregular details, service penetrations, shaped vault junctions and repairs where flat tape cannot make continuous contact.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-joint-sealing-tape-double-sided-butyl-cavity-membrane\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Joint Sealing Membrane Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eDouble-sided butyl tape for compatible membrane interfaces, patches and selected detailing work. CV3 sheet-to-sheet joints are sealed across the face with 150mm Platinum Corner Tape instead.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eCompatible CV3 Membrane Offcuts\u003c\/th\u003e\n\u003ctd\u003eClean offcuts retained for patches around larger tears, services or three-dimensional details. Each patch must preserve the cavity and be sealed with the specified Platinum butyl product.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-drainage-channel\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Drainage Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePerimeter channel installed at the wall-to-floor junction to collect water from behind CV3 and direct it towards a dependable gravity outlet or AquaSump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-floor-drain-channel\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Floor Drain Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eChannel without a wall upstand for cross-floor drainage, door thresholds and connections between perimeter AquaTrack runs and a suitable sump or outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-connector-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Connector Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eStraight push-fit connector joining AquaTrack channel lengths while maintaining alignment and an uninterrupted internal water path.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-swept-corner-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Swept Corner\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSmooth 90° push-fit corner maintaining channel continuity around internal or external corners while supporting water flow and future cleaning.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-t-piece\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack T-Piece\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eThree-way component connecting perimeter and cross-floor channel runs, including branches leading towards an AquaSump chamber or a suitable gravity outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-end-cap\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Universal End Cap\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eEnds a channel run or, using its formed adaptor, creates a compatible connection to suitable discharge pipework where the approved layout requires it.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-inspection-port\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack Inspection Port\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eMaintenance access for jetting, flushing and inspection at corners or T-piece locations. Keep every cover reachable after the final floor and wall finishes are completed.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-in-line-access-ports\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack In-Line Access Port\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePreformed access section for inspection and cleaning along straight channel runs where a corner-mounted inspection point is insufficient.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-110mm-drainage-channel-outlet\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack 110mm Outlet\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eConnects AquaTrack Drainage Channel or Floor Drain Channel to compatible 110mm round pipework where the project drainage design specifies this outlet size.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/platinum-aquatrack-drainage-connector\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaTrack 90° In-Line Drainage Connector\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSpecialist connection for approved changes of drainage level and suitable pipework arrangements. Use only where shown on the AquaTrack design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaSump Systems\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSump chambers and pumps for mechanical discharge where dependable gravity drainage is unavailable. Pump duty, chamber volume, head, flow, redundancy and servicing access must suit the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum AquaAlarm High-Water Alarms\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWarning equipment that alerts the user if water rises above the normal operating level because of pump, power, float or discharge failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eBattery Back-Up, Secondary Pump And Telemetry Equipment\u003c\/th\u003e\n\u003ctd\u003eAdditional resilience where loss of pumping could cause flooding or unacceptable damage. Selection must reflect pump load, likely inflow, expected outage and the consequence of failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eUsed in a project-specific detail where a deep floor build-up could prevent AquaTrack from collecting condensation from the room-facing surface of CV3. Compatibility with CV3 and the AquaTrack arrangement must be confirmed by the waterproofing designer.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/water-plug-platinum-aqua-stop\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Aqua Stop\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eRapid-setting plugging mortar for stopping suitable active local water leaks before the cavity drain system is installed. It does not replace structural repair or the designed drainage system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/fillet-seal-mortar\" rel=\"noopener\" target=\"_blank\"\u003ePlatinum Fillet Seal Mortar\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eRapid-curing cement-based mortar for suitable making good, local re-profiling and specified junction details before CV3 is installed. Allow it to cure in accordance with its separate instructions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" rel=\"noopener\" target=\"_blank\"\u003eWykamol RenderProof\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWaterproofing and plasticising additive for compatible sand-and-cement repair or render mixes where the preparation specification requires it. New work must reach the required condition before covering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/dry-rot-masonry-treatment-lignum-pro-m50\" rel=\"noopener\" target=\"_blank\"\u003eLignum Pro M50 Masonry Biocide\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eConcentrated treatment for appropriate fungal contamination within masonry after loose growth is removed. Active dry rot, timber decay and structural damage require a complete specialist assessment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti-Lime Sealer\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eTreatment for suitable new or existing concrete where free-lime leaching, dusting or deposits could obstruct the shallow CV3 cavity, AquaTrack channels or sump.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" rel=\"noopener\" target=\"_blank\"\u003eNewton Fibran XPS 500-C Insulation\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eHigh-compressive-strength closed-cell XPS insulation for compatible, fully specified and load-checked floor build-ups where thermal performance is required above the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eWykamol High Load Closed Cell Insulation\u003c\/th\u003e\n\u003ctd\u003eHigh-load insulating drainage spacer for suitable basement floor build-ups. Its grooved face supports drainage beneath the floor finish where included in a project-specific, load-checked design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eTreated Timber Battens And End-Cut Treatment\u003c\/th\u003e\n\u003ctd\u003eMinimum 25mm x 38mm preservative-treated battens for compatible dry-lining systems. Retreatment of cuts and controlled screw penetration are required to avoid puncturing CV3.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eMechanical Ventilation And Humidity Control\u003c\/th\u003e\n\u003ctd\u003eBuilding-services provision for controlling humidity, surface condensation and indoor air quality in habitable or Grade 3 below-ground spaces. This requires separate competent design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV3 forms part of a specialist structural waterproofing system and should be designed and installed by competent people experienced in cavity drain membrane work. The installation must follow the current CV3 product information, instructions for every ancillary and the project-specific waterproofing design.\u003c\/p\u003e\n\u003cp\u003eBefore work begins, confirm the structure, expected water conditions, internal environmental grade, drainage layout, outlet or sump position, pump duty, discharge route, ventilation strategy, final finishes and future maintenance access. A specialist survey is necessary for retaining structures so the moisture mechanism, structural defects, contamination and any separate remedial work are identified.\u003c\/p\u003e\n\u003cp\u003eWear appropriate PPE, including gloves, eye protection and safety footwear. Use suitable dust extraction and respiratory protection during drilling or substrate preparation. Provide correctly erected access equipment for high walls, arches and vaults, and keep the work area well lit and clear of loose rolls, open channels and trip hazards.\u003c\/p\u003e\n\u003cp\u003eScan for concealed electrical cables, gas pipes, water services and structural hazards before drilling. Control cutting tools, hammers, SDS drills and heat guns carefully. A heat gun may help dry the membrane surface or improve tape adhesion in cold or damp conditions, but the HDPE and butyl products must not be overheated or exposed to flame.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCV3 is not resistant to hydrostatic pressure as installed. Its studded sheet, sealed fixings, joints and drainage components form a depressurised cavity that accepts and controls water entering through the structure. The building should still limit ingress so the quantity never exceeds the designed cavity, channel, sump, pump or outlet capacity.\u003c\/p\u003e\n\u003cp\u003eThe waterproofing designer must assess retaining conditions, groundwater risk, construction type, permeability, wall and slab junctions, movement joints, cracks, service penetrations, slab levels, internal use and acceptable consequence of failure. Consider combined forms of waterproofing where the site risk, structure or intended environment requires additional resilience.\u003c\/p\u003e\n\u003cp\u003eEvery part of the cavity must connect continuously to drainage. The wall membrane, floor membrane, AquaTrack, Floor Drain, outlets, sumps and discharge pipework should form a coordinated route without sealed pockets, backfalls, trapped sections or details that direct water onto a joint. The shallow 3mm cavity makes cleanliness and continuity particularly important.\u003c\/p\u003e\n\u003cp\u003eWhere pumping is essential, the design should consider duty and standby pumps, separate electrical supplies where appropriate, high-water alarms, battery back-up, telemetry and safe discharge. Receiving drainage must accept the design flow without surcharging, freezing or returning water towards the protected structure.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates And Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cstyle\u003e\n  .pc-platinum-cv3-substrates-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-platinum-cv3-substrates-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-platinum-cv3-substrates-table {\n    width: 100%;\n    min-width: 1000px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-substrates-table th,\n  .pc-platinum-cv3-substrates-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-area-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-plain-list {\n    margin: 0;\n    padding: 0;\n    list-style: none;\n  }\n\n  .pc-platinum-cv3-substrates-table .pc-plain-list li + li {\n    margin-top: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-platinum-cv3-substrates-table-swipe {\n      display: block;\n    }\n\n    .pc-platinum-cv3-substrates-table {\n      min-width: 900px;\n      font-size: 14px;\n    }\n\n    .pc-platinum-cv3-substrates-table th,\n    .pc-platinum-cv3-substrates-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-platinum-cv3-substrates-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-platinum-cv3-substrates-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-platinum-cv3-substrates-table-wrap\" role=\"region\"\u003e\n\u003ctable class=\"pc-platinum-cv3-substrates-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 14%;\"\u003e \u003ccol style=\"width: 23%;\"\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 37%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003ePlatinum CV3 Waterproof Membrane Suitable Substrates And Finishes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eApplication Area\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eSuitable Substrates\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eCompatible Protection Or Finish\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eKey Requirement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eWalls\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eSound concrete.\u003c\/li\u003e\n\u003cli\u003eBrick masonry.\u003c\/li\u003e\n\u003cli\u003eConcrete blockwork.\u003c\/li\u003e\n\u003cli\u003eStone and compatible masonry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eFloor-supported independent dry-lining frame and plasterboard.\u003c\/li\u003e\n\u003cli\u003eCompatible proprietary metal lining system.\u003c\/li\u003e\n\u003cli\u003eTreated timber battens supporting plasterboard or suitable sheeting.\u003c\/li\u003e\n\u003cli\u003eProperly restrained internal brick or block lining.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eUse sealed Platinum Waterseal Brick Plugs in suitable backgrounds, specialist fixings where required and a finish that does not create uncontrolled penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eFloors\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eConcrete raft.\u003c\/li\u003e\n\u003cli\u003eConcrete slab.\u003c\/li\u003e\n\u003cli\u003eSuitable level concrete base.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eTongue-and-groove flooring board.\u003c\/li\u003e\n\u003cli\u003eNewton Fibran XPS 500-C and compatible board.\u003c\/li\u003e\n\u003cli\u003eWykamol High Load within an approved floor build-up.\u003c\/li\u003e\n\u003cli\u003eReinforced concrete or screed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eLay CV3 studs down, provide drainage to an outlet or AquaTrack, check imposed loads and never fix through the floor membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eSoffits And Vaults\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eArched or vaulted brickwork\u003c\/li\u003e\n\u003cli\u003eConcrete formed to a dependable fall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eProject-specific protected dry lining or finish suitable for the arch or vault.\u003c\/td\u003e\n\u003ctd\u003eMaintain continuous drainage falls, prevent ponding and sagging, use separately sealed overhead fixings and turn the ceiling membrane down end walls by at least 200mm.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eCV3 must be installed against a background stable enough to accept the specified fixing and support the final construction. Active structural movement, hazardous contamination, collapsing masonry and defects requiring engineered repair must be resolved before the membrane is concealed.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eComplete a specialist survey and remedy major sources of water ingress that can reasonably be corrected. Repair structural defects, active leaks, defective services, cracks and unstable backgrounds in accordance with the project design. Stop suitable local water leaks with Platinum Aqua Stop where appropriate, without confusing temporary leak control with the permanent drainage strategy.\u003c\/p\u003e\n\u003cp\u003eRemove unsound plaster, render and screed. Stiff-brush the exposed substrate to remove loose material, laitance, salts, dust, mould, adhesive and organic debris. Sound existing render may remain where the surveyor and fixing specification accept it, but soft, friable or poorly bonded layers must not be relied upon to retain plugs or support finishes.\u003c\/p\u003e\n\u003cp\u003eTreat appropriate fungal contamination in masonry with Lignum Pro M50 in accordance with its label and technical instructions. Active dry rot, wet rot, timber decay or insect attack requires specialist assessment and a complete remedial specification; simply covering affected materials with CV3 is not acceptable.\u003c\/p\u003e\n\u003cp\u003eMake good severe depressions, open joints and unstable areas with Platinum Fillet Seal Mortar or a compatible 3:1 sand-and-cement mix containing Wykamol RenderProof where specified. A concrete base receiving board directly over the membrane should have a maximum departure of 5mm beneath a 2m straightedge. Allow repair and levelling materials to reach the condition required by their separate instructions before covering.\u003c\/p\u003e\n\u003cp\u003eApply Wykamol Anti-Lime Sealer to suitable concrete where free lime or dust could migrate into the cavity and drainage system. Keep the prepared surface and AquaTrack route free from mortar, drilling debris and sharp projections because blockage or puncture can compromise the shallow cavity.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/newton-cdm-508r-radon-membrane-8mm-studded-waterproof-barrier-basement-membranes-717_1024x1024.webp?v=1779713188\" alt=\"Anti-lime treatment being applied to prepared concrete before Platinum CV3 installation.\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eAnti-lime sealer being applied to prepared concrete before installation of Platinum CV3 Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cem\u003e\u003cstrong\u003e\u003cbr\u003e\u003c\/strong\u003e\u003c\/em\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTypical installation equipment includes a tape measure, straightedge, spirit or laser level, marker, sharp utility knife, scissors or shears, 110V SDS hammer drill, suitable 10mm masonry bits, club hammer or mallet, hand roller, clean cloths, stiff brush, vacuum or dust extraction, and a controlled hot-air gun for drying and assisting butyl adhesion where necessary. Vaults and high walls also require appropriate scaffold or access equipment.\u003c\/p\u003e\n\u003cp\u003eSet out all Platinum Waterseal Brick Plugs, Waterseal Rope, Joint Sealing Membrane Tape, 150mm Corner Tape, AquaTrack components, repair products and protection materials before work starts. Confirm that roll sizes, fixing quantities, tape lengths, channel fittings, outlets, pumps and alarms match the drawings and calculated wastage. Do not improvise critical joints with generic tapes, mastics or sealants that have not been accepted for the detail.\u003c\/p\u003e\n\u003cp\u003eTools must be clean and serviceable. Dull blades can tear the membrane, worn drill bits can oversize holes, and contaminated rollers or cloths can reduce tape adhesion. Keep butyl surfaces clean and use firm, even pressure throughout each seal. Heat should assist drying and tack only; it must not distort the studs or soften the membrane.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBelow-ground CV3 installations must include a dependable method of disposing of water that may collect behind or beneath the membrane. Floors require a drainage outlet and a suitable fall towards it, or an AquaTrack perimeter drainage system connected to a safe gravity outlet or correctly sized AquaSump arrangement.\u003c\/p\u003e\n\u003cp\u003eAquaTrack Drainage Channel is normally positioned at the vulnerable wall-to-floor junction, while AquaTrack Floor Drain Channel can provide cross-floor routes, threshold details or a connection to a central sump. The channel layout must collect water from every membrane cavity and structural junction without relying on water to cross unplanned obstructions or sealed pockets.\u003c\/p\u003e\n\u003cp\u003eProvide inspection and jetting access at suitable locations, including changes of direction and channel runs that require future cleaning. Covers and access ports must remain reachable after screed, flooring, dry lining and joinery are completed. Record their locations before concealment and include them in the owner’s maintenance information.\u003c\/p\u003e\n\u003cp\u003eIf pumps are required, calculate inflow, duty point, static head, friction losses, discharge distance and chamber volume. Consider pump redundancy, high-water alarms, power-loss resilience and telemetry according to risk. The final discharge point must be lawful, dependable and arranged so water cannot flow back towards the building.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_1_1024x1024.png?v=1787049928\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003ePlatinum AquaTrack Channel positioned at the wall-to-floor junction to collect water from behind Platinum CV3 Waterproof Membrane, with Platinum Corner Tape securing the channel to the Newton Condensation Strip and Newton CDM Fibran XPS 500-C Insulation beneath (via Platinum CV3 Waterproof Membrane as a floor membrane).\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePlatinum AquaTrack Preparation And Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eForm the AquaTrack route at the wall-to-floor junction in accordance with the current AquaTrack instructions and project drawings. The supporting bed must be stable and level, and the channel must not be distorted or obstructed by mortar, debris or uneven infill. Position the upstand against the wall-membrane detail so collected water can enter the channel freely.\u003c\/p\u003e\n\u003cp\u003eJoin channel lengths with AquaTrack Connector Pieces. Use Swept Corners at 90° direction changes, T-Pieces where perimeter and cross-floor runs meet, and AquaTrack Floor Drain where a channel without a wall upstand is required. Connect the selected Universal End Cap, 110mm Outlet or approved 90° In-Line Connector to compatible pipework leading towards the sump or gravity discharge.\u003c\/p\u003e\n\u003cp\u003eInstall AquaTrack Inspection Ports and In-Line Access Ports where the maintenance design requires them, ensuring each remains reachable after the final floor build-up. Keep internal channel surfaces clean and check that each connection presents an uninterrupted flow path. Do not rely on adhesive, foam or improvised fittings that could create an internal lip or detach later.\u003c\/p\u003e\n\u003cp\u003eBefore concealing the drainage system, flush it with clean water and confirm flow to the outlet or AquaSump. Inspect joints, corners, access points and discharge pipework, then photograph and record the installed layout. Where a pump is fitted, test normal operation, alarm function, back-up provision and discharge under controlled conditions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCV3 may be installed vertically or horizontally. Measure the wall carefully and cut the roll on a clean, protected surface with a sharp knife, scissors or shears. Position the sheet with the studs towards the wall and the flat face towards the room, keeping it level and tight into corners without excessive stretching, bridging or distortion.\u003c\/p\u003e\n\u003cp\u003eBegin at the top of the wall and make sufficient initial fixings to support the sheet before completing the chosen fixing pattern. Drill a 10mm hole centrally through a membrane stud and into sound masonry to the depth required by the Platinum Waterseal Brick Plug. Minimise drilling dust behind the sheet and avoid striking edges between studs.\u003c\/p\u003e\n\u003cp\u003eInsert a Waterseal Brick Plug With Seal and drive it fully home so the sealing washer compresses evenly against the membrane. Where a plug without a seal and Platinum Waterseal Rope detail is specified, form a continuous ring around the plug so the butyl compresses into a watertight gasket. Reject loose or poorly sealed fixings and repair the location correctly.\u003c\/p\u003e\n\u003cp\u003eContinue the membrane into ceiling voids and down to the floor or drainage detail where possible. Return it onto adjacent walls sufficiently to isolate the final lining, and plan openings before fixing. Electrical points, cables, pipework and switches should remain on the dry side wherever practicable.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_2_1024x1024.png?v=1787050649\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_3_1024x1024.png?v=1787050650\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_4_1024x1024.png?v=1787050650\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFixing density depends on the selected dry-lining system and substrate. For preservative-treated timber battens, use centres no greater than 600mm vertically and 400mm horizontally. A compatible fixed metal track may use centres no greater than 800mm vertically and 600mm horizontally. Barrel-vault details require tighter fixing, typically 300mm around the vault and 600mm down its length.\u003c\/p\u003e\n\u003cp\u003eUse preservative-treated timber battens at least 25mm x 38mm, with 25mm x 50mm often giving better support at plasterboard edges. Fix 5mm No.10 self-tapping screws into the central core of Platinum Waterseal Brick Plugs so no separate hole is made through CV3. The screw must engage safely without passing through the plug or puncturing the membrane behind the batten.\u003c\/p\u003e\n\u003cp\u003eIndependent floor-supported frames do not require a set membrane-fixing grid, but enough plugs must hold CV3 reasonably tight around corners, openings and junctions. Compatible proprietary metal lining systems and correctly restrained internal masonry linings may also be used where their loads and ties are designed without uncontrolled penetrations.\u003c\/p\u003e\n\u003cp\u003eFix plasterboard or other approved lining boards so nails and screws penetrate less than the batten depth. Keep services in front of CV3 and support heavy fittings from predetermined battens or structural fixings. Only exceptional through-fixings should penetrate the membrane, and each requires a designed sealed detail.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM3_Membrane_6_1024x1024.png?v=1786974636\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003ePlatinum Waterseal Brick Plugs fixing Platinum CV3 to the wall, with fixing centres set to suit the internal finish, typically 600mm vertically and 400mm horizontally for timber battens.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing And Sealing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV3 has no flange. Position adjacent sheets edge to edge as a close, accurately aligned butt joint, keeping the cut edges straight and free from gaps, overlaps or distorted studs. Clean and dry the membrane face on both sides of the joint before sealing.\u003c\/p\u003e\n\u003cp\u003eApply 150mm Platinum Corner Tape centrally over the joint so approximately equal tape width bonds to each sheet. Press it firmly with a hand roller or palm, working progressively along the joint to remove wrinkles, bridging and trapped air while maintaining full contact across both membrane faces.\u003c\/p\u003e\n\u003cp\u003eIn cold or damp conditions, dry the HDPE gently with a controlled hot-air gun and warm the butyl only enough to improve tack. Never seal over visible water, dust, mortar, grease or loose contamination. Use continuous tape lengths where practicable, and carefully lap any unavoidable tape ends in accordance with the current tape instructions.\u003c\/p\u003e\n\u003cp\u003eStraight joints may run vertically or horizontally, but unnecessary joints should be avoided and the membrane must remain flat on both sides of every connection. Inspect the complete seal before concealment and repair damaged areas with compatible CV3 and the specified Platinum tape or rope arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_5_1024x1024.png?v=1787051107\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003ePlatinum CV3 butt joint sealed with Platinum Corner Tape (Heavy Duty) during floor installation. \u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall-To-Floor Junction And AquaTrack Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe wall-to-floor junction must transfer water from behind CV3 into AquaTrack without leaving a sealed pocket or unprotected gap. Position the wall membrane and channel upstand to the approved project detail, then clean and dry the surfaces before applying Platinum Corner Tape.\u003c\/p\u003e\n\u003cp\u003eWhere CV3 continues across the floor, turn the floor membrane up at the wall and seal it to the wall membrane or AquaTrack upstand with Corner Tape as specified. Form corners neatly and avoid bunching the membrane, blocking drainage openings or pulling the tape across unsupported voids.\u003c\/p\u003e\n\u003cp\u003eIf the finished floor build-up extends above the effective AquaTrack upstand, the waterproofing designer must provide a compatible detail that allows condensation from the room-facing surface of CV3 to enter the drainage system without obstructing water from the structural side. Keep the collection route open and use only components confirmed as compatible with the specified system.\u003c\/p\u003e\n\u003cp\u003eBefore floor finishes are installed, pour controlled clean water behind the wall membrane and confirm that it enters AquaTrack and reaches the outlet or AquaSump. Rectify slow flow, leakage, trapped sections and unsealed junctions before the system is concealed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_1_1024x1024.png?v=1787049928\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProvide a suitable outlet and fall or install the designed AquaTrack layout before laying CV3. The concrete base must be clean, stable and free from sharp projections. Where board will lie directly over the membrane, prepare the surface so it does not deviate by more than 5mm beneath a 2m straightedge.\u003c\/p\u003e\n\u003cp\u003eRoll CV3 across the floor with the studs facing down. Cut sheets neatly around the perimeter, channels, columns and unavoidable services without stretching or distorting the studs. The floor membrane must remain loose laid and must never be fixed through to the slab.\u003c\/p\u003e\n\u003cp\u003eBring adjacent floor sheets together as clean, close butt joints without overlapping the membrane. Centre 150mm Platinum Corner Tape over each joint, press firmly across its full width and check that both edges remain aligned while the seal is formed. The finished floor membrane must remain continuous and free from open edges, wrinkles or trapped debris.\u003c\/p\u003e\n\u003cp\u003eProtect CV3 promptly. Suitable tongue-and-groove board should be loose laid with the floor-finish supplier’s required perimeter expansion gap and staggered, bonded joints. Newton Fibran XPS 500-C or Wykamol High Load may be incorporated where the complete drained floor build-up is compatible and load checked. Alternatively, use at least 50mm reinforced concrete or screed directly over CV3, or at least 65mm where laid over insulation, in accordance with BS 8204-1 and the project specification.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_3_1024x1024.png?v=1786715577\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Platinum_CV3_Membrane_6_Floor_1024x1024.png?v=1787051825\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCV3 may be installed to suitable arched or vaulted ceilings where the construction provides a continuous fall to drainage. Survey the curve, end walls, joints and outlet route before cutting so the membrane can follow the substrate without excessive tension, open folds or areas of sagging that could retain water.\u003c\/p\u003e\n\u003cp\u003ePosition the membrane studs towards the soffit and support it with Platinum Brick Plugs Without Seals. Form a continuous ring of Platinum Waterseal Rope around each plug and drive the fixing firmly enough to compress the butyl into a watertight gasket against the curved membrane face. Standard sealing washers should not be used where the curve prevents an even seal.\u003c\/p\u003e\n\u003cp\u003eWhere separate sections meet across the vault, form a close butt joint and seal it centrally with 150mm Platinum Corner Tape. Plan shaped cuts carefully and keep the number of joints to a practical minimum. Prevent sagging between fixings so no pocket can hold water or debris.\u003c\/p\u003e\n\u003cp\u003eAt each end wall, turn the vault membrane down by at least 200mm. Mitre only as necessary to follow the curve, seal every cut with approved tape or rope, and fit the wall membrane in front of the turned-down ceiling sheet so water continues towards the designed drainage route.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat below-ground soffits should not be lined with CV3. The membrane requires a minimum slope of 10% so any water behind it can move towards the designed drainage point instead of ponding against the sheet, fixings or taped joints.\u003c\/p\u003e\n\u003cp\u003eWhere the soffit does not provide this fall, select another waterproofing approach through the project designer. Do not attempt to create drainage by allowing the membrane to hang or by relying on a loose sheet to form channels, because sagging creates uncontrolled pockets and places stress on fixings and joints.\u003c\/p\u003e\n\u003cp\u003eArched, vaulted or suitably sloping soffits must still be checked across their complete width and length. Local depressions, ribs, beams, abutments and changes of direction can interrupt the fall even when the general geometry appears adequate. Resolve those details before installation and ensure every cavity terminates at a safe collection route.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRun CV3 continuously around internal and external corners where the sheet can be folded neatly without excessive distortion. Form a square crease and fix the membrane tightly into the angle so the final lining remains straight and the cavity does not bridge across the corner.\u003c\/p\u003e\n\u003cp\u003eIf the sheet becomes misshapen around a return, stop at the corner and begin a new piece rather than forcing a distorted fold. Butt the adjoining edges closely and seal them with 150mm Platinum Corner Tape. Use Waterseal Rope where a shaped three-dimensional detail cannot make full contact with flat tape.\u003c\/p\u003e\n\u003cp\u003eWhere possible, install CV3 across window openings and cut it away afterwards so the main sheet remains continuous. Seal the exposed perimeter using the correct combination of Platinum Joint Sealing Membrane Tape, Waterseal Rope and Corner Tape. At doors or fixed obstacles where this method is impossible, bring the membrane accurately to the perimeter and seal the gap with the same care.\u003c\/p\u003e\n\u003cp\u003eCoordinate thresholds with AquaTrack Floor Drain, perimeter channel or another approved continuity detail before fixing. Avoid isolated cavities beside frames and never leave an unsealed reveal or return where water can bypass the membrane and reach the dry lining.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Platinum CV3\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAvoid services through the membrane wherever practical and route pipes, cables, conduits, sockets and controls on the dry side. Where a penetration is unavoidable, establish its position before cutting and keep the opening as small and regular as possible.\u003c\/p\u003e\n\u003cp\u003eFor floor services, trim CV3 closely around the pipe or conduit and fill the remaining gap completely with Platinum Waterseal Rope. Where necessary, add a compatible CV3 patch, seal it to the service with rope and seal its outer edge with Platinum Joint Sealing Membrane Tape or Corner Tape.\u003c\/p\u003e\n\u003cp\u003eUse suitable proprietary collars or sleeves for larger, grouped, moving, hot or irregular services where a simple rope-and-patch detail cannot provide durable continuity. The service material, temperature, expected movement and future replacement method must be compatible with the selected seal.\u003c\/p\u003e\n\u003cp\u003eExceptional structural fixings through a lined wall require a predetermined load-bearing and waterproofing detail. Fix heavy objects into designed battens or structural supports wherever possible. Any hole through CV3 must be packed and sealed with compatible flexible butyl products before it is concealed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Platinum CV3 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProtect CV3 from sharp tools, dropped fixings, masonry fragments, wheelbarrows, ladders and concentrated foot traffic as soon as each area is complete. A concealed tear, displaced seal or crushed drainage path can compromise the finished system even when the flat face still appears largely intact.\u003c\/p\u003e\n\u003cp\u003eKeep ultraviolet light, high temperatures, open flame and incompatible chemicals away from exposed rolls and installed sheets. Do not leave CV3 uncovered longer than necessary, and prevent wet trades from dropping mortar, screed or plaster into the cavity, AquaTrack channel or inspection ports.\u003c\/p\u003e\n\u003cp\u003eCoordinate all subsequent work through one responsible person. Electricians, plumbers, joiners, dry liners and floor installers must understand that they cannot drill, nail or screw through the membrane without an approved sealed detail. Mark restricted fixing zones and provide predetermined battens or service routes before finishes are closed.\u003c\/p\u003e\n\u003cp\u003eWhere temporary protection board is used, ensure it does not crush the studs or block drainage. Remove protective materials carefully, inspect the complete membrane and clean the channels immediately before applying permanent floor or wall protection.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCV3 has very high resistance to vapour diffusion. When positioned on the cold side of insulation, it can increase interstitial-condensation risk unless the wall or floor build-up and internal environment are designed properly. Carry out the appropriate BS 5250:2021 assessment and consider a vapour-control layer on the warm side where required.\u003c\/p\u003e\n\u003cp\u003eHabitable basements and Grade 3 spaces normally need planned mechanical ventilation, background heating or another specialist environmental-control strategy. The required air-change rate, extract location, make-up air, noise, energy use and control method must be designed for the room’s occupancy and moisture generation.\u003c\/p\u003e\n\u003cp\u003eDo not open the membrane cavity directly to the room as an improvised condensation measure. A below-ground system should remain controlled because unrestricted openings may allow odours, vermin, moisture movement or water to bypass the intended drainage and protection details.\u003c\/p\u003e\n\u003cp\u003eMonitor relative humidity after completion and address persistent internal sources such as wet construction materials, clothes drying, unvented appliances or inadequate extraction. Structural waterproofing controls water from the ground; it does not replace normal management of indoor moisture and air quality.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspect the full CV3 installation before dry lining, flooring, concrete or screed conceals it. Confirm that the membrane is correctly orientated, tight to walls and vaults, studs are not crushed, every fixing is sealed and no tears, open edges, wrinkles or unsupported joints remain.\u003c\/p\u003e\n\u003cp\u003eCheck every butt joint, corner, window and door detail, service penetration, wall-to-floor transition and AquaTrack connection. Confirm that 150mm Platinum Corner Tape remains centred over each sheet joint, then roll it firmly and replace any section contaminated by dust, water, oil or loose debris rather than attempting to press it back into service.\u003c\/p\u003e\n\u003cp\u003eVacuum cavity edges and drainage channels. Flush AquaTrack and Floor Drain Channel with clean water and verify free movement to the outlet or AquaSump. Operate pumps, high-water alarms and any back-up system, and check that discharge cannot return towards the structure.\u003c\/p\u003e\n\u003cp\u003ePhotograph the finished membrane, channels, outlets, sump, pipework and all concealed details. Record dimensions from permanent reference points and complete the installer’s inspection documentation. Do not approve concealment until defects are repaired and the system performs as intended.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Platinum CV3\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRepair damage before it is concealed. Clean and dry the affected CV3 thoroughly, trim ragged material where necessary and assess whether the studs and cavity remain serviceable. A small clean puncture may be repaired with the approved Platinum tape detail, while a larger tear requires a compatible patch extending well beyond sound membrane on every side.\u003c\/p\u003e\n\u003cp\u003eUse Platinum Waterseal Rope around irregular holes, plug penetrations or three-dimensional details, then secure the repair with Joint Sealing Membrane Tape or Corner Tape as appropriate. Apply firm pressure across the complete seal and use controlled warmth only if needed to remove surface moisture or improve butyl tack.\u003c\/p\u003e\n\u003cp\u003eWhere damage has crushed a significant area of studs, affected a critical joint, or occurred beside a channel, penetration or wall-to-floor junction, replace the membrane section or obtain a project-specific repair detail. A flat patch that seals the face but blocks the drainage cavity is not acceptable.\u003c\/p\u003e\n\u003cp\u003eAfter repair, repeat the relevant inspection and controlled water test. Photograph the completed work and add it to the waterproofing record so later owners and contractors understand the location and method of the concealed repair.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe protected CV3 sheet itself does not require routine maintenance under normal service conditions. The drainage system that makes Type C waterproofing function does. AquaTrack, Floor Drain Channel, inspection ports, outlets, AquaSump chambers, pumps, alarms, back-up power and discharge pipework must remain accessible and be inspected and serviced at the intervals set by the system designer and equipment manufacturers.\u003c\/p\u003e\n\u003cp\u003eFlush drainage channels through the provided access points and remove lime, silt or debris before it restricts flow. Test pumps and float switches, clean sump chambers, operate alarms and confirm back-up systems under controlled conditions. Keep written service records and investigate changes in pump frequency, unusual noise, odour, dampness or water level promptly.\u003c\/p\u003e\n\u003cp\u003eFuture shelving, cupboards, skirtings, flooring, services and wall-mounted equipment must not be fixed through CV3 casually. Use recorded battens and designed support points, or obtain a waterproofing detail for each new penetration. Even a small unsealed fixing can provide a route for water to bypass the system.\u003c\/p\u003e\n\u003cp\u003eProvide the owner with drawings, photographs, product information, test records, access-point locations, pump manuals and maintenance contacts. Any contractor altering the space should review this information before drilling, lifting floors or opening linings.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCV3 is a cavity drain membrane and is not resistant to hydrostatic pressure as a standalone barrier; it requires a complete designed drainage and discharge system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe shallow 3mm cavity must remain clean and unobstructed, making control of drilling dust, mortar, lime deposits, silt and crushed studs particularly important.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCV3 can contribute to a Grade 3 internal environment only as part of a coordinated system with suitable drainage, resilience, ventilation, inspection and maintenance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHazardous chemicals, unknown industrial residues, active structural movement and unstable substrates require specialist investigation and project-specific assessment before they are concealed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlat retaining soffits are unsuitable. Vaulted, arched or sloping soffits require a dependable fall and sufficient separately sealed fixings to prevent sagging and ponding.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFloor membrane must never be punctured by fixings. Screed, board, Newton Fibran and Wykamol High Load build-ups require appropriate support, drainage and load checking.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVery high vapour resistance can increase condensation risk when CV3 lies on the cold side of insulation; ventilation, heating and BS 5250 assessment remain essential.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCV3 must be protected from fire, impact, ultraviolet exposure, high temperatures and uncontrolled penetrations by later trades throughout installation and service.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCV3 sheet-to-sheet joints must be formed as close butt joints and sealed centrally with 150mm Platinum Corner Tape; do not overlap adjoining sheets.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePumps, alarms, battery back-up and telemetry do not eliminate risk. Their capacity, power provision, discharge and service regime must match the consequences of failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStorage And Shelf Life\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eStore CV3 rolls upright in their original protective wrapping, under cover and away from sharp objects, direct sunlight, high temperatures and open flame. Do not stack or position rolls where they may be crushed, distorted or punctured by other materials.\u003c\/p\u003e\n\u003cp\u003eKeep Platinum tapes, Waterseal Rope, plug seals and other butyl products clean, dry and within the temperature conditions stated on their packaging. Protect AquaTrack components from impact and deformation, and store cementitious products, biocides and Anti-Lime Sealer according to their separate labels and safety information.\u003c\/p\u003e\n\u003cp\u003ePublished CV3 data states a service life equal to the structure for correctly installed and protected membrane rather than a finite shelf life for the wrapped roll. Inspect all stored materials before use and reject membrane with brittle areas, damaged studs, contamination or prolonged uncontrolled exposure.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePlatinum CV3 is recyclable polyethylene, subject to clean recovery and suitable recycling facilities being available at the time of removal. Offcuts contaminated with butyl tape, mortar, hazardous substrate material or other site waste must be handled through the appropriate waste stream.\u003c\/p\u003e\n\u003cp\u003ePlatinum CV3 is available in clear 2m x 10m and 2m x 20m rolls, providing nominal areas of 20m² and 40m². Actual project coverage must allow for cuts, corners, reveals, openings, junctions, service details, repairs and reasonable wastage.\u003c\/p\u003e\n\u003cp\u003eTechnical values describe laboratory or declared product performance and do not determine the suitability of a complete wall or floor. Structural loading, insulation, screed reinforcement, fire performance, condensation, drainage capacity, groundwater, penetrations and final occupancy require separate project-specific assessment.\u003c\/p\u003e\n\u003cp\u003eUse the latest applicable Platinum CV3 Declaration of Performance and instructions for every system component. Installation must also follow the project-specific waterproofing design and any applicable Building Control or structural-warranty requirements. Where site conditions fall outside the published scope, obtain project-specific advice from Platinum Chemicals and the waterproofing designer before work begins.\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 Waterproof Membrane is a high-density polyethylene cavity-drain sheet with a compact 3mm studded profile. It is designed for internal waterproofing on suitable walls, floors, vaults and tunnels, particularly in basements and other earth-retaining structures. The studs hold the membrane away from the substrate, creating a shallow air and depressurisation gap that separates the internal finish from damp, salts and water-bearing masonry. Water entering the structure can move through this cavity towards a compatible drainage and discharge system. Platinum CV3 is a non-meshed membrane, so it is normally protected by dry lining, battens, an independent frame, internal masonry or a compatible load-spreading floor construction rather than receiving plaster or render directly.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Platinum CV3 work as a cavity-drain membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 manages water after it enters the building structure rather than attempting to resist all hydrostatic pressure at the internal surface. Its 3mm studs create a continuous cavity behind walls or beneath floors. Water can travel through this space towards a compatible perimeter drainage channel, gravity outlet or correctly specified sump-and-pump system. The smooth internal face remains separated from damp and salt-contaminated masonry, helping protect boards, flooring and decorative finishes. This method is known as Type C drained protection. Reliable performance depends on the complete system, including sealed butt joints, watertight fixing points, correctly detailed corners and penetrations, unobstructed drainage, sufficient discharge capacity, accessible inspection points and planned maintenance throughout the waterproofed area’s working life.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why does Platinum CV3 have a 3mm studded profile?\u003c\/h3\u003e\n\u003cp\u003eA) The 3mm profile creates a useful drainage cavity while taking up very little internal space. This makes Platinum CV3 particularly valuable around stairs, low ceilings, doorways, narrow passages and floor build-ups where a deeper membrane would reduce headroom or usable room dimensions. It can also help align new floor levels with existing thresholds during refurbishment. The compact cavity requires careful preparation because loose debris, mortar, drilling dust, silt, limescale or standing water can restrict its drainage capacity more readily than a deeper void. Floor falls, channel connections and discharge routes must therefore be planned and tested thoroughly. CV3 should be selected because its drainage performance, loading capacity and shallow build-up suit the complete project design, not simply because it is thin.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which roll sizes are available for Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is supplied in 2m-wide rolls measuring either 10m or 20m long, providing nominal gross areas of 20m² and 40m² respectively. The stated coverage is the uncut membrane area and does not include allowances for trimming, corners, reveals, columns, service penetrations, repairs or reasonable waste. Measure every wall, floor, return, opening and vaulted section before ordering, then prepare a sheet layout that minimises unnecessary joints. Standard CV3 has no flat flange, so adjoining sheets normally meet at a butt joint sealed with 150mm Platinum Overtape. Calculate the required quantities of Overtape, Waterseal Brick Plugs, Waterseal Tape, Waterseal Rope, drainage components and finishing materials separately from the gross membrane area.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main advantages of Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 combines a shallow 3mm build-up with the flexibility to waterproof suitable walls, floors, vaults and tunnels. Its compact profile preserves valuable headroom and floor area, while the HDPE sheet can be cut, positioned and mechanically fixed relatively quickly. It isolates internal finishes from damp, salts and contaminated substrates without requiring the extensive surface preparation often associated with fully bonded tanking, although loose or unsafe materials must still be removed. The membrane provides strong vapour resistance and is waterproof, salt inhibiting, root resistant and contaminant resistant. It also has no curing period of its own. These benefits depend on correct jointing, compatible protected finishes, effective drainage, competent installation and continued access for maintaining channels, outlets, sumps and pumps.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where can Platinum CV3 Waterproof Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 can be used in domestic and commercial basements, cellars, underground corridors, storage rooms, plant areas, tunnels, earth-retained walls and correctly detailed vaulted structures. It is especially useful where low ceilings, stairs, narrow spaces or restricted floor levels make an 8mm membrane impractical. CV3 may be installed on suitable walls and floors as part of a coordinated Type C waterproofing system. It can also serve as a damp-proof sheet in an appropriate above-ground specification, provided avoidable moisture sources are corrected first. Every application requires assessment of the structure, groundwater risk, substrate stability, drainage capacity, proposed internal use and finish. Habitable, pumped, complex or high-risk schemes should be designed and installed by competent structural-waterproofing specialists.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV3 help create a habitable Grade 3 basement?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 can form part of a Type C system designed to provide Grade 3 conditions, where water penetration and dampness are unacceptable, as commonly required for habitable basements. The membrane separates the internal construction from the retaining structure and directs incoming water towards controlled drainage. It cannot provide the required environment independently. The completed result depends on structural condition, anticipated ingress, sealed details, drainage capacity, gravity or pumped discharge, alarms, power resilience, ventilation, insulation, heating, humidity control and maintenance. Current below-ground projects should be designed in accordance with BS 8102:2022. Building Regulations, warranty requirements and the intended room use must also be considered, with a competent waterproofing design specialist coordinating the full construction before installation begins.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV3 be installed on walls and floors?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is suitable for both walls and floors, but the installation and protection methods differ. On walls, the studs face the substrate and the membrane is mechanically fixed using sealed Platinum Waterseal Brick Plugs. It may be fitted vertically or horizontally and then protected by an appropriate lining. On floors, CV3 is normally loose-laid with the studs facing down, cut neatly to the room perimeter and connected to the wall membrane and drainage-channel upstand. Adjacent sheets are butt-jointed with 150mm Platinum Overtape. Floor fixings must not puncture the membrane, and the finished construction needs a compatible load-spreading layer. Both applications require sealed transitions, clear drainage paths and protection from tools, debris and later building work.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which substrates are suitable for Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 can be installed over stable concrete, brickwork, blockwork, stone, sound render, sound screed and comparable masonry substrates capable of accepting the specified fixings and supporting the intended finish. The background does not need to be cosmetically perfect, but it must not contain projections or loose material that could puncture the sheet or obstruct drainage. Unsound plaster, weak render, defective screed, deep voids and unstable areas should be removed or repaired. Floor bases must be sufficiently flat and capable of directing water towards drainage without isolated low points. Structural movement, collapsing masonry, uncontrolled water flow, hazardous contamination and timber decay require proper assessment and remedial work before concealment. The membrane must never be used to hide an unresolved structural or safety problem.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should a surface be prepared before installing Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Remove loose plaster, weak render, defective screed, organic matter, rubble and sharp projections. Repair deep holes and severe irregularities with a compatible mortar, then allow all new work to dry thoroughly before fixing the membrane. Sound render may remain if it is stable and will not weaken the fixing points. Brush visible mould or masonry fungal growth from the wall and apply a suitable masonry biocide in accordance with its instructions. Dry rot requires detailed specialist assessment, while affected timber should be repaired or treated before the area is enclosed. Floors must be clean, stable and free from oil, dust and debris. Above ground, correct avoidable moisture sources, including leaking services, defective rainwater goods or an appropriately diagnosed damp-proof-course problem, wherever practical.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How flat must a floor be before Platinum CV3 is installed?\u003c\/h3\u003e\n\u003cp\u003eA) New concrete bases should be constructed in accordance with BS 8204-1:2003+A1:2009, which remains the current code of practice for concrete bases and cementitious levelling screeds receiving flooring. For Platinum CV3, the prepared surface should not deviate by more than 5mm beneath a 3000mm straightedge. Unsound screed, ridges, sharp projections, deep hollows and unstable areas must be repaired before installation. Flatness alone is not enough in an earth-retaining application: the floor must also permit water to travel towards the designed channel and discharge point without persistent ponding. Standing water can carry silt or limescale into the shallow cavity and reduce drainage. Check levels and drainage before covering the slab, then correct any low points or reverse falls.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Platinum CV3 installed on a wall?\u003c\/h3\u003e\n\u003cp\u003eA) Position Platinum CV3 with its studs against the wall and the smooth face towards the room. It can be installed vertically or horizontally; horizontal fitting generally creates fewer joints, while vertical strips are lighter and easier to handle. Align the first sheet using a spirit or laser level. Drill through the centre of a stud near the top edge with a 10mm bit to a depth greater than the fixing, then insert a Platinum Waterseal Brick Plug until its rubber washer seals flush against the membrane. Add another top fixing approximately 2m along and continue setting out while checking the level. Complete the required fixing pattern, form sealed butt joints and inspect corners, penetrations and the drainage termination before installing the protective lining.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which fixings and centres should be used for Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum Waterseal Brick Plugs are used for standard wall installations. Each plug has a soft rubber sealing washer and is installed through the centre of a membrane stud into a clean 10mm hole. Fixing centres depend on the selected lining. Typical guidance is 600mm vertically by 400mm horizontally for treated timber battens and 800mm vertically by 600mm horizontally for fixed metal-track systems. Barrel vaults require closer restraint, generally about 300mm around the curve and 600mm along its length. Free-standing frames and internal walls do not require a support grid connected to the membrane, but sufficient plugs must keep CV3 neat and reasonably tight. Align all plug rows and add restraint around corners, reveals, edges and irregular surfaces where required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are joints sealed in Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Standard Platinum CV3 has no flat flange, so adjoining sheets normally meet edge to edge as a close butt joint. Clean and dry both membrane faces, then centre 150mm Platinum Overtape over the joint so it bonds evenly to each sheet. Press the entire tape surface firmly with the palm or a suitable roller, removing wrinkles, trapped air and unbonded edges. In cold or damp conditions, a controlled hot-air gun can evaporate light surface moisture and improve adhesion, but the HDPE must not be overheated or distorted. Platinum Waterseal Tape is used for compatible DPC interfaces and specified lapped details rather than as the normal face seal over a CV3 butt joint. Inspect every joint before concealment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should corners, returns and door reveals be detailed?\u003c\/h3\u003e\n\u003cp\u003eA) Fit Platinum CV3 tightly into internal and external corners without stretching the HDPE, crushing studs or bridging an unsupported void. Form a neat continuous fold where possible. If the wall profile causes the membrane to distort, make a controlled cut and create a new butt joint sealed with Platinum Overtape. Extend the waterproofing onto return walls so damp cannot bypass the treated area and damage adjacent finishes. At a door opening in vaulted work, a separate membrane section may be fitted around the head and lapped approximately 100mm down the sides before the wall sheet wraps into the reveal. Seal angled gaps with Overtape and use a compatible project-specific detail where the studded membrane cannot fit within a narrow junction.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Platinum CV3 require a drainage channel or sump?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 must be connected to effective drainage whenever it is used in a full or partly earth-retaining structure. A compatible perimeter channel is normally positioned at the wall-to-floor junction to collect water from behind the wall membrane and from the structural joint. The channel then discharges through a safe gravity route or into a correctly sized sump-and-pump arrangement. Standing water must not remain beneath the membrane because silt and limescale can obstruct the shallow cavity. The system should include accessible jetting or rodding points so channels can be inspected and flushed. Pump duty, chamber capacity, discharge pipework, high-water alarms, standby equipment and backup power should reflect the anticipated inflow and the consequences of drainage or electrical failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Platinum CV3 installed on a floor?\u003c\/h3\u003e\n\u003cp\u003eA) Starting at one side of the room, unroll Platinum CV3 with its studs facing down and cut it accurately to the perimeter, columns, thresholds, sump covers and unavoidable services. Lay the next width so the edges meet as a close butt joint. Clean and dry both faces, apply 150mm Platinum Overtape centrally over the joint and press it firmly across its full width. Seal the floor membrane to the compatible perimeter-channel upstand using the specified Overtape detail while maintaining the intended drainage path. Compatible horizontal DPC connections are sealed with Platinum Waterseal Tape. Do not drive fixings through the floor membrane. Protect completed areas from sharp tools, rubble and concentrated traffic, test drainage and then install the specified load-spreading floor finish.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV3 be laid over green concrete for faster finishing?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 can form part of a fast-track floor build-up over green concrete once the slab is sufficiently firm to walk on. The membrane creates a dry working surface above while construction moisture remains controlled within the cavity beneath, allowing compatible floor finishes to proceed without waiting for the conventional relative-humidity level normally required for direct application to concrete. This method does not remove the need for adequate structural strength, surface flatness, drainage, load assessment or protection against punctures. The full floor build-up must be designed for the intended use, and every membrane joint and perimeter connection must be sealed. Levelling compounds, adhesives, screeds and other materials used elsewhere remain subject to their own curing, moisture and compatibility requirements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should pipes and services passing through Platinum CV3 be sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Route pipes, cables, conduits and ducts on the dry side of Platinum CV3 wherever possible, particularly on floors and overhead surfaces where penetrations create significant weaknesses. If a service must pass through the membrane, cut a neat opening with the smallest practical clearance. Seal the gap with a compatible high-quality hybrid polymer adhesive where appropriate. For a more substantial detail, add a CV3 or compatible DPC patch, seal it to the service with compressed Platinum Waterseal Rope and seal the patch perimeter with Platinum Waterseal Tape or the specified compatible tape. The completed detail must accommodate movement, temperature change and future maintenance. Inspect the entire circumference, test where practicable and photograph the penetration before it is covered.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which wall and floor finishes are compatible with Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Compatible wall finishes include treated timber battens and plasterboard, a free-standing timber or metal dry-lining frame, an appropriate proprietary metal-track system or a properly restrained internal brick or block wall. Timber battens should be at least 25mm x 38mm, although 25mm x 50mm can provide better support at board edges. They can be secured into the hollow cores of Waterseal Brick Plugs using carefully selected 5mm self-tapping screws. Floor finishes require a compatible load-spreading construction that protects the studs and avoids all membrane punctures. Timber floors also need the expansion gap specified by the flooring manufacturer. Every lining must satisfy structural, thermal, fire, acoustic and moisture requirements while keeping drainage access points and sump covers serviceable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can plaster or render be applied directly to Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Conventional plaster or render should not be applied directly to Platinum CV3 because it is a smooth, non-meshed HDPE membrane and does not provide the mechanical key required for a wet finish. The membrane should instead be protected by a compatible dry-lining frame, treated battens and boards, proprietary lining system or internal masonry wall. Battens and brackets can use the hollow centres of correctly installed Waterseal Brick Plugs, preventing unnecessary new penetrations through the waterproofing. Plug cores accept approximately 30mm of screw, so the correct screw length must be calculated from the batten thickness. Overlong or over-tightened fasteners may loosen a plug or puncture CV3. Where a direct plastered finish is required, specify an appropriate meshed waterproofing membrane rather than modifying CV3 on site.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Platinum CV3 be used on vaulted ceilings and soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 can be installed on correctly detailed vaulted cellar ceilings where sheets, joints and fixings allow water to drain without ponding. The membrane must remain tight to the curve and free from sagging pockets. For overhead work, use Platinum Waterseal Plugs without their rubber washers and form each fixing seal with compressed Platinum Waterseal Rope. Barrel-vault fixing centres should generally be about 300mm around the curve and 600mm along its length, with plug rows aligned for later battens. Flat soffits require a dependable fall towards the designed drainage route and enough restraint to prevent sagging. Vaults, end walls, door heads and overhead penetrations are complex waterproofing details and should be completed by experienced structural-waterproofing installers using an approved project-specific design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What tools and accessories are needed to install Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Typical tools include an SDS hammer drill, suitable 10mm masonry bits, a wide-headed hammer or mallet, sharp utility knife, tape measure, spirit level, rotating laser, clean lint-free cloths and a roller or firm pressure tool for tapes. A controlled hot-air gun can assist surface drying and tape adhesion in cold conditions, but open flames must never be used. Confirmed system accessories include Platinum Waterseal Brick Plugs, 150mm Platinum Overtape, Platinum Waterseal Tape and Platinum Waterseal Rope. The project may also require compatible perimeter drainage, inspection eyes, outlets, a sump, pumps, alarms, backup equipment, DPC patches, treated battens and protective linings. Provide suitable PPE, lighting, safe access equipment and dust control before installation begins.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Platinum CV3 require a curing or drying period?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 itself does not cure because it is a prefabricated HDPE sheet rather than a wet-applied coating. The specified lining or floor construction can normally proceed after the membrane, fixings, butt joints, corners, penetrations and drainage connections have been inspected and tested. Associated materials still need the correct drying or curing time. Repair mortars, screeds, levelling compounds, biocides, adhesives and sealants must reach the condition required by their individual instructions. New wall repairs should be allowed to dry thoroughly before CV3 is fixed. A separately designed fast-track floor arrangement may allow CV3 to be installed over walkable green concrete, but this does not apply automatically to every repair or finish. Clean, dry bonding surfaces remain essential for Overtape, Waterseal Tape and Waterseal Rope.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main technical specifications of Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is manufactured from HDPE with a membrane thickness of 0.6mm, stud depth of 3mm and density of 500g\/m². Its service-temperature range is -50°C to +80°C, with a softening temperature of 126°C. Tensile strength is 418N in the machine direction and 488N in the cross direction under BS 12311-2. Water-vapour resistance exceeds 3020MNs\/g, and resistance to static loading is greater than 20kg under BS 12730. The membrane passes watertightness testing at 60kPa for 24 hours to EN 1928, has a declared compressive strength of 250kN and carries a Class E reaction-to-fire classification. Project loading and drainage capacity still require specific assessment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which standards and product declarations apply to Platinum CV3?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is declared as a Type V damp-proof sheet in accordance with BS EN 13967:2012+A1:2017. Its declared performance includes a watertightness pass at 60kPa for 24 hours to EN 1928, Class E reaction to fire under EN 13501-1 and compressive strength of 250kN under BS EN ISO 25619-2. Below-ground Type C systems incorporating CV3 should be designed in accordance with BS 8102:2022, including assessment of groundwater, structure, drainage, discharge, maintainability and intended internal conditions. Concrete bases and cementitious levelling screeds should follow BS 8204-1:2003+A1:2009. Compliance depends on the complete project design and installation, not the membrane sheet alone, so compatible details and system components must be coordinated by competent specialists.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What guarantee is provided with Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is guaranteed against deterioration for 30 years when it is correctly specified, installed and protected in accordance with the applicable requirements. Long-term waterproofing performance also depends on the surrounding system. Butt joints, fixing seals, wall-to-floor transitions and penetrations must remain intact, while drainage channels, outlets, sumps, pumps and alarms must continue to operate. The membrane should remain covered by an appropriate wall or floor finish and protected from ultraviolet light, sharp objects, impact, excessive heat and open flames. Later contractors must not drill or screw through concealed areas. Retain product records, installation drawings, photographs and maintenance information so the waterproofing arrangement can be protected and serviced throughout the building’s use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What maintenance does a Platinum CV3 waterproofing system require?\u003c\/h3\u003e\n\u003cp\u003eA) The protected CV3 membrane normally needs little direct routine attention, but every connected drainage and pumping component must remain accessible and serviceable. Inspect and flush perimeter channels through suitable jetting or rodding eyes so silt, limescale and debris cannot restrict the shallow drainage route. Sumps should be cleaned, pumps and floats operated, non-return valves checked and discharge pipework examined in accordance with the system design and equipment instructions. Test high-water alarms, standby pumps and backup power where installed. Maintenance frequency should reflect groundwater risk, water flow, lime exposure, pump activity, occupancy and any guarantee requirements. Keep as-built drawings, photographs, access locations and no-fix zones available so future work does not puncture the membrane or conceal maintainable equipment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Platinum CV3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Platinum CV3 is not a stand-alone barrier capable of resisting hydrostatic pressure without functioning drainage and safe discharge. Its shallow 3mm cavity can be obstructed by debris, silt, limescale or standing water if floor falls and maintenance are inadequate. Standard CV3 is non-meshed, so direct plaster or render is unsuitable. Overtape and other seals require clean, dry surfaces, while all floor penetrations should be avoided wherever possible. Flat soffits need a dependable fall and close support to prevent ponding. The membrane cannot correct structural instability, uncontrolled leaks, dry rot, hazardous contamination or avoidable building defects. It must also be protected from ultraviolet exposure, impact, excessive heat, flames and later drilling, nailing or screwing by follow-on trades.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What practical tips help ensure a reliable Platinum CV3 installation?\u003c\/h3\u003e\n\u003cp\u003eA) Plan the sheet orientation, plug rows, butt joints, wall-to-floor connection, drainage route, sump, services and final finishes before cutting. Measure gross areas separately from waste and calculate Overtape, Waterseal Plugs, Waterseal Tape and Waterseal Rope from the actual layout. Keep the shallow cavity free from drilling dust, mortar and rubble, and use a spirit or laser level frequently so long sheets do not drift or kink around corners. Clean and dry every taped surface, centre 150mm Overtape accurately and consolidate it firmly across its full width. Before concealment, inspect membrane, fixings, joints and penetrations, flush drainage, test pumps and alarms, photograph critical details, mark no-fix zones and provide the owner with a maintenance schedule.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_TECH.pdf?v=1787143323\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_TECH.pdf?v=1787143323\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_MEMBRANE_TECH_160x160.jpg?v=1787143312\" alt=\"\" style=\"float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_CV3_WATERPROOF_MEMBRANE_DOP.pdf?1285\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/PLATINUM_GT8_GEOTEX_MEMBRANE_DOP_160x160.jpg?v=1573558472\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e","brand":"Platinum Building Chemicals Ltd","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":12590821900387,"sku":"BWMCV3","price":123.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.0M x (L) 10M (20M²)","offer_id":12590836744291,"sku":"BWMCV3-10","price":84.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/platinum-cv3-cavity-drain-waterproof-membrane-3mm-stud-w-2-0m-x-l-20m-40m-basement-membranes-772.webp?v=1787132105"},{"product_id":"wykamol-cm3-waterproof-membrane","title":"Wykamol CM3 - Waterproof Membrane (3mm Stud)","description":"\u003cp\u003eWykamol CM3 Waterproof Membrane is a clear HDPE cavity drain membrane with a compact 3mm stud profile, developed for Type C drained protection and damp proofing on suitable walls, floors and vaulted ceilings.\u003c\/p\u003e\n\u003cp\u003eAvailable in 2m x 10m and 2m x 20m rolls, covering 20m² or 40m², CM3 separates internal finishes from damp, salts and water-affected substrates. Its shallow cavity is especially useful where headroom, floor depth or wall build-up is restricted.\u003c\/p\u003e\n\u003cp\u003eCM3 is BBA certified under Certificate 18\/5595 and declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017. It can contribute to a maintainable BS 8102:2022 Type C system when combined with sealed Wykamol joints, Waterguard drainage, a suitable gravity outlet or sump-and-pump arrangement, protected finishes, ventilation and planned maintenance. It is not resistant to hydrostatic pressure as a standalone sheet, so drainage capacity and every junction, fixing and penetration must be designed correctly.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch2\u003e\n\u003cstrong\u003eKey Features Of Wykamol CM3 Waterproof Membrane\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ Low-profile 3mm studded membrane preserves valuable headroom, floor depth and internal space in restricted basement, cellar and refurbishment details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for damp proofing and Type C waterproofing on appropriate walls, floors, tunnels, arched structures and vaulted ceilings above or below ground.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified under Certificate 18\/5595 and declared as a Type V damp-proof sheet to BS EN 13967:2012+A1:2017.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Published performance includes watertightness at 60kPa for 24 hours, 250kN\/m² compressive strength and a working range from -50°C to +80°C.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Available in clear 2m x 10m and 2m x 20m rolls covering 20m² or 40m², with a stated service life equal to the structure when correctly installed and protected.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e3mm Cavity Drain Membrane For Type C Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM3 is a low-profile internal cavity drain membrane for projects where a deeper membrane would consume valuable floor depth, headroom or internal wall space. Manufactured from high-density polyethylene, the regular 3mm studs create a defined separation layer between the existing structure and the protected internal finish. Moisture entering through the substrate can move within this cavity instead of remaining trapped behind plasterboard, screed, flooring or decorative finishes. CM3 may be specified on suitable walls, floors, tunnels, archways and vaulted cellar ceilings as part of a coordinated Wykamol Type C system. Its compact profile is especially practical around stairs, low ceilings, door openings, narrow passages and other restricted refurbishment details. The sheet can be cut with a sharp utility knife, scissors or shears, but its final performance still depends on accurate positioning, sealed fixings, correct joints and an uninterrupted route to drainage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eControlled Drainage Within The Wykamol Waterproofing System\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eCM3 manages water rather than attempting to resist hydrostatic pressure at the internal face of the structure. Its studded cavity creates a depressurisation and drainage space that must connect to a collection and discharge route. At wall-to-floor junctions, Wykamol Waterguard Perimeter Drainage Channel can collect water from behind the wall membrane and direct it towards a gravity outlet or sump chamber. Wykamol Floor Drain Channel may be used across floors, at thresholds or to connect perimeter runs with the chosen outlet. Where gravity drainage is unavailable, pumps, alarms and suitable resilience measures must be selected for the anticipated water volume and consequence of failure. The system remains maintainable only when jetting points, channels, sump covers and mechanical equipment remain accessible. CM3 must therefore never be treated as an isolated waterproof sheet: the membrane, jointing, channel layout, discharge capacity and servicing provisions must be designed together before finishes conceal the work.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eVersatile Protection For Walls, Floors And Vaulted Structures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe BBA certificate confirms CM3 for use on walls, floors and vaulted ceilings above or below ground, including damp or contaminated backgrounds, high-groundwater situations and areas subject to vibration. Suitable wall substrates include sound concrete, brick, blockwork, stone and other masonry capable of retaining the specified mechanical fixings. On walls, CM3 may support treated timber battens, an independent dry-lining frame, compatible proprietary metal lining or a properly detailed masonry lining. On floors, the membrane is installed studs down and protected by suitable tongue-and-groove board, closed-cell insulation with a compatible covering, or the specified reinforced concrete or screed. Arched and vaulted ceilings must provide a dependable fall so water cannot pond behind the membrane. Every detail must preserve cavity continuity and drainage. Chemically contaminated brownfield applications fall outside the BBA-assessed scope and require specialist project-specific assessment rather than reliance on general contaminant-resistance claims.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable HDPE For Demanding Damp Conditions\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM3 is moulded from HDPE and is intended to remain protected behind the selected wall or floor finish. Published technical data records a unit weight of 0.5kg\/m², 3mm stud height, tensile strengths of 416N in the machine direction and 488N across the sheet, resistance to static loading above 20kg and compressive strength of 250kN\/m². The membrane passes the declared watertightness test at 60kPa for 24 hours and has a working temperature range from -50°C to +80°C. The BBA also records high resistance to puncture and the ability to support long-term imposed loads within its certified scope. These characteristics support use in protected basement wall and floor build-ups, but careful handling remains essential. Crushed studs, punctures, unsealed edges, damaged tapes, ultraviolet exposure or uncontrolled penetrations by later trades can interrupt the cavity or create a path around the membrane and must be prevented or repaired.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDesigned To Support Grade 3 Internal Environments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eCM3 can contribute to dry Grade 3 conditions when it forms part of a designed Type C waterproofing system, but the environmental grade is achieved by the complete waterproofing strategy rather than the membrane alone. BS 8102:2022 design must consider the structure, groundwater risk, anticipated ingress, channel capacity, sump volume, pump duty, discharge route, alarm provision, power-loss resilience, ventilation and intended use. The BBA certificate states that where Grade 3 protection is required and a below-ground wall retains more than 600mm of ground, CM3 should be combined with Type A or Type B waterproofing protection. Heating, ventilation and humidity control also require attention because the membrane has high vapour resistance and may increase interstitial-condensation risk when placed on the cold side of insulation. Competent waterproofing design, careful installation, pre-concealment inspection and planned servicing are essential if the completed space is to achieve and retain its intended internal environment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eLong-Term Protection With Flexible Finishing Options\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eUnder normal service conditions, the BBA certificate states that CM3 can remain an effective barrier to salts, liquid water and water vapour for the life of the structure. This depends on the membrane being correctly installed, protected and incorporated into a functioning drainage arrangement. Wall finishes may include plasterboard on treated timber battens secured into Wykamol CM Brick Plugs, compatible proprietary metal systems, independent dry-lining frames or a suitably restrained internal masonry lining. Floor protection may use tongue-and-groove board, supported timber flooring, closed-cell insulation, Wykamol High Load insulation within an approved load-checked build-up, or reinforced concrete or screed of the specified thickness. The chosen construction must protect the membrane from impact and fire, prevent uncontrolled punctures, avoid compressing the drainage cavity and accommodate ventilation and thermal requirements. Drainage channels, inspection eyes, sumps, pumps and alarms must remain accessible, because maintainability is a fundamental part of long-term Type C waterproofing performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_1_1024x1024.png?v=1786715575\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Build-Up:\u003c\/strong\u003e The compact 3mm profile preserves valuable headroom, floor depth and room area around stairs, low ceilings, narrow passages and restricted refurbishment details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eManaged Type C Drainage: \u003c\/strong\u003eCreates a controlled cavity that directs water towards Waterguard drainage, helping relieve pressure while isolating protected internal finishes from damp substrates.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReduced Surface Removal:\u003c\/strong\u003e Can isolate sound damp, salty or contaminated backgrounds without unnecessarily extensive hacking off, provided loose, organic and structurally unsuitable material is removed first.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFast Mechanical Installation:\u003c\/strong\u003e Lightweight HDPE cuts easily and can be positioned and fixed efficiently using Wykamol plugs, sealing tapes, rope and compatible detailing accessories.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBroad Application Range: \u003c\/strong\u003eSuitable for appropriately designed walls, floors, tunnels, archways and vaulted ceilings in new construction or existing buildings above and below ground.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWall And Floor Coordination: \u003c\/strong\u003eMatching Wykamol jointing and Waterguard components help create a continuous, maintainable waterproofing route across compatible wall, floor and junction details.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eResistance To Damp And Salts: \u003c\/strong\u003eProvides an effective barrier against liquid water, water vapour and substrate salts when correctly sealed, drained and protected behind compatible finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHigh Load Performance: \u003c\/strong\u003ePublished static-load, compressive-strength and puncture-resistance data support use beneath suitable protected floor build-ups when the complete construction is properly load checked.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDocumented Watertightness: \u003c\/strong\u003eDeclared performance records a pass at 60kPa for 24 hours to EN 1928, supporting specification within the product’s tested and certified scope.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certification: \u003c\/strong\u003eCovered by BBA Agrément Certificate 18\/5595 when installed, used and maintained within the stated scope and in accordance with current Wykamol guidance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMaintainable Waterproofing: \u003c\/strong\u003eCompatible channels, inspection eyes, sumps, pumps and alarms create a water-management system that can be accessed, monitored, cleaned and routinely serviced.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFlexible Internal Finishes: \u003c\/strong\u003eCan be protected behind battens, independent frames, proprietary linings, internal masonry, flooring boards, insulation or correctly specified reinforced screed and concrete.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong Service Life:\u003c\/strong\u003e BBA assessment states that the protected membrane can remain an effective water, vapour and salt barrier for the life of the structure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRecyclable Material:\u003c\/strong\u003e Manufactured from polyethylene that can be recycled, subject to clean recovery and the recycling facilities available when the membrane is eventually removed.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing:\u003c\/strong\u003e Provides low-profile internal Type C protection to suitable retaining walls and floors with designed Waterguard drainage, safe discharge and accessible maintenance provisions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions: \u003c\/strong\u003ePreserves headroom and usable floor area while separating new protected finishes from damp, salty or water-affected masonry in correctly drained cellar refurbishments.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEarth-Retained Walls:\u003c\/strong\u003e Isolates internal linings from damp or salt-affected concrete, brick, blockwork, stone and other sound masonry capable of retaining the specified sealed fixings.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eConcrete Floors: \u003c\/strong\u003eSupports low-profile floor waterproofing over suitable level concrete within a drained, protected and load-checked build-up designed for the intended imposed loads.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaulted Cellars:\u003c\/strong\u003e Provides cavity drainage to arched or vaulted ceilings where sealed overhead fixings prevent sagging and preserve a continuous fall towards the designed drainage route.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTunnels And Archways: \u003c\/strong\u003eEnables low-profile internal water management in underground passages and arched structures where limited clearance makes a compact membrane cavity particularly useful.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePlant And Utility Rooms:\u003c\/strong\u003e Protects suitable below-ground service spaces where maintainable channels, dependable discharge, accessible pumping equipment and high-water warning arrangements are included in the design.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCommercial Below-Ground Areas: \u003c\/strong\u003eSupports offices, stores and service rooms requiring project-specific waterproofing coordinated with ventilation, humidity control, protected finishes and planned drainage maintenance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDamp Wall Refurbishment: \u003c\/strong\u003eSeparates new dry linings from sound but damp, friable, painted or salt-contaminated masonry after appropriate cleaning, repairs and moisture diagnosis are completed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRestricted Construction Depths: \u003c\/strong\u003eAccommodates stairs, thresholds, low soffits, narrow corridors and shallow floor zones where the 3mm profile offers a practical advantage over deeper membranes.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Agrément Certificate 18\/5595: \u003c\/strong\u003eWykamol CM3 is covered by Product Sheet 1 of Certificate 18\/5595 when installed, used and maintained within the certified scope. The current sheet is the second issue dated 23 August 2022.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Design: \u003c\/strong\u003eCM3 is satisfactory for use in Type C drained protection constructions. Compliance applies to the complete waterproofing design and installation, not the membrane in isolation.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eGrade 3 And NHBC: \u003c\/strong\u003eThe BBA references NHBC Standards Chapters 5.1, 5.2 and 5.4. Where Grade 3 protection is required and retained ground exceeds 600mm, CM3 should be combined with Type A or Type B protection.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS EN 13967:2012+A1:2017: \u003c\/strong\u003eCM3 is declared as a Type V damp-proof sheet under this harmonised technical specification. The Declaration of Performance lists the applicable essential characteristics and declared results.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003ePublished Test Data:\u003c\/strong\u003e Wykamol records watertightness to EN 1928, tensile strength to BS EN 12311-2, static loading to BS 12730 and compressive strength to BS EN ISO 25619-2.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFire Classification: \u003c\/strong\u003eThe Wykamol CM3 Declaration of Performance records a reaction-to-fire classification of Class E in accordance with EN 13501-1:2007+A1:2009. The membrane is intended to remain protected within the completed wall or floor construction, which must satisfy current Building Regulations and the project fire strategy.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLife Of The Structure:\u003c\/strong\u003e Under normal service conditions, the BBA states that CM3 will provide an effective barrier to salts, liquid water and water vapour for the life of the structure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM3 performs by maintaining a shallow studded cavity between the damp or water-bearing structure and the protected internal finish. Water entering through the background can move within this cavity towards Waterguard, Floor Drain, a gravity outlet or sump chamber instead of remaining trapped behind plasterboard, flooring, screed or decoration. This managed-drainage principle defines Type C waterproofing and accommodates changing groundwater conditions when the complete system has sufficient capacity.\u003c\/p\u003e\n\u003cp\u003eThe 3mm stud profile minimises wall and floor build-up where usable space is restricted. CM3 is therefore particularly helpful around low ceilings, stairs, thresholds, reveals, narrow passages and compact floor constructions. The shallow cavity must remain clean and continuously connected to drainage because mortar, drilling dust, lime deposits, silt, crushed studs or standing water can reduce the available route more quickly than in a deeper cavity.\u003c\/p\u003e\n\u003cp\u003eThe HDPE membrane provides durable separation between internal finishes and damp, salts or suitable substrate contamination. The BBA confirms high resistance to water vapour and an effective barrier to salt transfer within its assessed scope. It does not assess CM3 for chemically contaminated brownfield sites, so hydrocarbons, hazardous chemicals or unknown industrial contamination require specialist investigation and must not be covered on the strength of general product descriptions alone.\u003c\/p\u003e\n\u003cp\u003eInstallation is comparatively quick when carried out by an experienced cavity-drain contractor. The membrane can be fixed to walls, loose-laid studs down on floors and fitted to properly falling vaults. It has no curing period, allowing follow-on work after the joints, fixings, drainage connections and details have been inspected and tested. Repair mortars, concrete, screeds and other wet-applied materials must still reach the condition required by their own instructions.\u003c\/p\u003e\n\u003cp\u003ePublished performance includes watertightness at 60kPa for 24 hours, tensile strengths of 416N and 488N, resistance to static loading above 20kg and compressive strength of 250kN\/m². The stated working range is -50°C to +80°C. These figures support specification within their respective tests but do not replace project-specific assessment of loading, water volume, channel capacity, substrate stability or final use.\u003c\/p\u003e\n\u003cp\u003eFor the building owner, the principal benefit is the potential to create dry, usable space within a maintainable waterproofing system. Grade 3 performance is produced by the complete design rather than CM3 alone. The structure, membrane, sealed details, Waterguard layout, gravity or pumped discharge, alarms, power resilience, ventilation, protected finishes, inspection access and planned servicing must continue to operate together throughout the installation’s working life.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm3-tech-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-wykamol-cm3-tech-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-wykamol-cm3-tech-table {\n    width: 100%;\n    min-width: 900px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-tech-table th,\n  .pc-wykamol-cm3-tech-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm3-tech-table .pc-feature-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-wykamol-cm3-tech-table-swipe {\n      display: block;\n    }\n\n    .pc-wykamol-cm3-tech-table {\n      min-width: 820px;\n      font-size: 14px;\n    }\n\n    .pc-wykamol-cm3-tech-table th,\n    .pc-wykamol-cm3-tech-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-wykamol-cm3-tech-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-wykamol-cm3-tech-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-wykamol-cm3-tech-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-wykamol-cm3-tech-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-wykamol-cm3-tech-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 36%;\"\u003e \u003ccol style=\"width: 18%;\"\u003e \u003ccol style=\"width: 22%;\"\u003e \u003ccol style=\"width: 24%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" colspan=\"2\" scope=\"col\"\u003eFeature\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eResult\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eUnit Weight\u003c\/th\u003e\n\u003ctd\u003e0.5kg\/m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSheet Thickness\u003c\/th\u003e\n\u003ctd\u003e0.6mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Height\u003c\/th\u003e\n\u003ctd\u003e3mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eStud Centres\u003c\/th\u003e\n\u003ctd\u003e20mm\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eAir Gap Volume\u003c\/th\u003e\n\u003ctd\u003e2.19 litres\/m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eColour\u003c\/th\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eRoll Sizes\u003c\/th\u003e\n\u003ctd\u003e2m x 10m and 2m x 20m\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eNominal Roll Coverage\u003c\/th\u003e\n\u003ctd\u003e20m² and 40m²\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWater Vapour Resistance\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;3020MNs\/g\u003c\/td\u003e\n\u003ctd\u003eManufacturer\/store data\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eWorking Temperature\u003c\/th\u003e\n\u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eSoftening Temperature\u003c\/th\u003e\n\u003ctd\u003e126°C\u003c\/td\u003e\n\u003ctd\u003e—\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Machine Direction\u003c\/th\u003e\n\u003ctd\u003e416N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eTensile Strength, Cross Direction\u003c\/th\u003e\n\u003ctd\u003e488N\u003c\/td\u003e\n\u003ctd\u003eBS EN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eResistance To Static Loading\u003c\/th\u003e\n\u003ctd\u003e\u0026gt;20kg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eReaction To Fire\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eType Of Application\u003c\/th\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" colspan=\"2\" scope=\"row\"\u003eLife Expectancy\u003c\/th\u003e\n\u003ctd\u003eLife of the structure when correctly installed and protected\u003c\/td\u003e\n\u003ctd\u003eBBA Certificate 18\/5595\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"4\" scope=\"colgroup\"\u003eEssential Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eEssential Characteristic\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePerformance\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eTest Standard\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eHarmonised Technical Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eWater Tightness, 60kPa For 24 Hours\u003c\/th\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eResistance To Tearing\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12310-1\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eElongation At 5%\u003c\/th\u003e\n\u003ctd\u003eMD: NPD; CMD: NPD\u003c\/td\u003e\n\u003ctd\u003eEN 12311-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Creep \/ Resistance To Static Load\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 13967 Annex B\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eImpact Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12691-2 Method A\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Ageing\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eDurability Against Chemicals\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eFire Resistance\u003c\/th\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eJoint Tensile Shear Resistance\u003c\/th\u003e\n\u003ctd\u003eNPD\u003c\/td\u003e\n\u003ctd\u003eEN 12317-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-feature-cell\" scope=\"row\"\u003eCompressive Strength\u003c\/th\u003e\n\u003ctd\u003e250kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003ctd\u003eBS EN 13967:2012+A1:2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm3-ancillary-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-wykamol-cm3-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-wykamol-cm3-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-ancillary-table th,\n  .pc-wykamol-cm3-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-section-title {\n    padding: 11px 12px;\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-product-cell,\n  .pc-wykamol-cm3-ancillary-table .pc-product-cell a {\n    color: #111;\n    font-weight: 700;\n    text-align: left;\n  }\n\n  .pc-wykamol-cm3-ancillary-table .pc-product-cell a {\n    text-decoration: underline;\n    text-underline-offset: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-wykamol-cm3-ancillary-table-swipe {\n      display: block;\n    }\n\n    .pc-wykamol-cm3-ancillary-table {\n      min-width: 720px;\n      font-size: 14px;\n    }\n\n    .pc-wykamol-cm3-ancillary-table th,\n    .pc-wykamol-cm3-ancillary-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-wykamol-cm3-ancillary-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-wykamol-cm3-ancillary-table .pc-section-title {\n      padding: 9px;\n      font-size: 18px;\n    }\n\n    .pc-wykamol-cm3-ancillary-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-wykamol-cm3-ancillary-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-wykamol-cm3-ancillary-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 74%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"2\" scope=\"colgroup\"\u003eWykamol CM3 Waterproof Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-and-seals-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003eWykamol CM Brick Plugs With Seals\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePrimary 10mm x 60mm fixing plugs for securing CM3 to sound brick, block, stone or concrete walls. The fitted elastomer washer must compress against the membrane to form a sealed fixing, while the central core accepts a 5mm No.10 screw for suitable secondary fixings.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-without-seals-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003eWykamol CM Brick Plugs Without Seals\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eAlternative fixing plugs used with a compressed ring of Wykamol Sealing Rope where a separate butyl seal is preferable, including selected overhead, curved, vaulted or irregular details.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/evolution-sds-drill-bit-10mm\" rel=\"noopener\" target=\"_blank\"\u003eEvolution 10mm SDS Plus Masonry Drill Bit\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSuitable diameter for standard CM Brick Plug fixing holes in compatible masonry. Confirm the required drilling depth, substrate condition and any longer specialist fixing needed before installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape-double-sided-butyl\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Membrane Sealing Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eDouble-sided 30mm butyl tape for compatible membrane-to-DPC interfaces, patches and selected detailing work. CM3 sheet-to-sheet joints are sealed across the face with Wykamol Corner Strip Tape instead.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-sealing-rope-butyl-membrane-sealing-rope\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Sealing Rope\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eCompressible 10mm butyl rope for unsealed plugs, irregular joints, service penetrations, shaped vault details and repairs where flat tape cannot make continuous contact.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-corner-strip-tape-butyl-membrane-sealing-tape\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Corner Strip Tape\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWide single-sided butyl tape used as the principal CM3 joint seal. Centre the 150mm tape over clean, closely butted sheet edges; it is also used at wall-to-floor junctions, corners, reveals and repairs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" rel=\"noopener\" target=\"_blank\"\u003eDamp Proof Course Rolls\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eStocked physical DPC for compatible continuity, patch and selected service details. Confirm the required width, load capacity and jointing method; ordinary DPC must not replace a specialist high-load detail where one is specified.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-drainage-channel\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Waterguard Perimeter Drainage Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePerimeter channel installed at the wall-to-floor junction to collect water from behind CM3 and direct it towards a dependable gravity outlet or sump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-floor-drain-channel\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Floor Drain Channel\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eChannel without an upstand for cross-floor drainage, door thresholds and connections between Waterguard and a suitable sump or outlet.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-corner-piece\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Waterguard Swept Corner\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSmooth 90° push-fit corner maintaining channel continuity around internal or external corners while supporting water flow and future cleaning.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eWykamol Waterguard T-Piece\u003c\/th\u003e\n\u003ctd\u003eThree-way push-fit component connecting Waterguard and Floor Drain runs, including cross-floor routes or a branch leading towards a sump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Waterguard Flexible Jetting Eye\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eFlexible inspection and cleaning access for Waterguard or Floor Drain. The upstand can be positioned to remain accessible through the completed floor or a suitable wall-port detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-extended-jetting-eye\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Waterguard Extended Jetting Eye\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePush-fit maintenance access with a 50mm waste outlet, used where the channel requires a discreet inspection and flushing point through the floor build-up.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eWykamol Universal Channel Outlet\u003c\/th\u003e\n\u003ctd\u003eSpecialist outlet for connecting Waterguard or Floor Drain to suitable 100mm pipework or a sump arrangement, with an integrated jetting-eye detail. Confirm availability and the current Wykamol installation instructions before specification.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-50mm-channel-end-outlet\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Waterguard 50mm Channel End Outlet\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003ePush-fit end outlet connecting Waterguard or Floor Drain to suitable 50mm pipework leading to a sump, gully or approved gravity discharge point.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" rel=\"noopener\" target=\"_blank\"\u003eBasement Sump And Pump Systems\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eSump chambers and pumps for mechanical discharge where dependable gravity drainage is unavailable. Pump duty, chamber volume, head, flow, pipework, redundancy and servicing access must suit the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" rel=\"noopener\" target=\"_blank\"\u003eHigh-Water-Level Alarms\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWarning equipment that alerts the user if water rises above the normal operating level because of pump, power, float or discharge failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eBattery Back-Up, Secondary Pump And Telemetry Equipment\u003c\/th\u003e\n\u003ctd\u003eAdditional resilience where loss of pumping could cause flooding or unacceptable damage. Selection must reflect the pump load, likely inflow, expected outage and consequence of failure.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" rel=\"noopener\" target=\"_blank\"\u003eNewton CDM Condensation Strip\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eA compatible detail specified by the waterproofing designer where a deep floor build-up could prevent condensation on the room-facing surface of CM3 from entering Waterguard. The detail must preserve drainage from both sides of the membrane and use components confirmed as compatible with the Wykamol system.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-section-title\" colspan=\"2\" scope=\"colgroup\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eProduct\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Anti-Lime Sealer\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eTreatment for suitable new or existing concrete where free-lime leaching, dusting or deposits could obstruct the shallow CM3 cavity, Waterguard channels or sump.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-microtech-masonry-biocide\" rel=\"noopener\" target=\"_blank\"\u003eWykamol Microtech Masonry Biocide\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eMasonry biocide for appropriate fungal or biological contamination after loose growth has been removed. Dry rot, wet rot and structurally affected timber require separate specialist investigation and treatment.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/ultracure-damp-proof-dpc-cream\" rel=\"noopener\" target=\"_blank\"\u003eUltracure Damp Proof DPC Cream\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWykamol chemical DPC cream used above ground where rising damp has been correctly diagnosed and remedial DPC treatment is specified. It does not replace below-ground Type C drainage.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-universal-mortar\" rel=\"noopener\" target=\"_blank\"\u003eWykamol HydraDry Universal Mortar\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eFibre-reinforced repair and profiling mortar for suitable local making-good, levelling or approved junction details before CM3 is installed. Allow it to cure as required by its separate instructions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" rel=\"noopener\" target=\"_blank\"\u003eWykamol RenderProof\u003c\/a\u003e\u003c\/th\u003e\n\u003ctd\u003eWaterproofing and plasticising additive for compatible sand-and-cement repair or render mixes where the Wykamol preparation specification requires it. New work must dry sufficiently before covering.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eWykamol High Load Closed Cell Insulation\u003c\/th\u003e\n\u003ctd\u003eHigh-load 50mm insulating drainage spacer for suitable basement floor build-ups. Its grooved face and shiplap edges support drainage, insulation and load transfer where included in a project-specific, load-checked design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eTreated Timber Battens And End-Cut Treatment\u003c\/th\u003e\n\u003ctd\u003eMinimum 25mm x 38mm preservative-treated battens for compatible dry-lining systems. All cuts should be retreated, and screw penetration beyond the batten must not puncture CM3.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-product-cell\" scope=\"row\"\u003eMechanical Ventilation And Humidity Control\u003c\/th\u003e\n\u003ctd\u003eBuilding-services provision for controlling humidity, surface condensation and indoor air quality, particularly in Grade 3 or habitable below-ground spaces. This requires separate competent design.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM3 forms part of a specialist structural waterproofing system and should be designed and installed by competent people experienced in cavity drain membrane work. The installation must follow the current Wykamol technical data, BBA Certificate 18\/5595, product instructions for every ancillary and the project-specific waterproofing design.\u003c\/p\u003e\n\u003cp\u003eBefore work begins, confirm the structure, expected water conditions, internal environmental grade, drainage layout, outlet or sump position, pump duty, discharge route, ventilation strategy, final finishes and future maintenance access. A specialist survey is necessary for below-ground or persistently damp areas so the moisture mechanism, structural defects, contamination and any separate remedial work are identified.\u003c\/p\u003e\n\u003cp\u003eWear appropriate PPE, including gloves, eye protection and safety footwear. Use suitable dust extraction and respiratory protection during drilling or substrate preparation. Provide correctly erected access equipment for high walls, arches and vaults, and keep the work area well lit and clear of loose rolls, open channels and trip hazards.\u003c\/p\u003e\n\u003cp\u003eScan for concealed electrical cables, gas pipes, water services and structural hazards before drilling. Control cutting tools, hammers, SDS drills and heat guns carefully. A heat gun may help dry the membrane surface or improve tape adhesion in cold or damp conditions, but the HDPE and butyl products must not be overheated or exposed to flame.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCM3 is not resistant to hydrostatic pressure as installed. Its studded sheet, sealed fixings, joints and drainage components form a depressurised cavity that accepts and controls water entering through the structure. The building should still limit ingress so the quantity never exceeds the designed cavity, channel, sump, pump or outlet capacity.\u003c\/p\u003e\n\u003cp\u003eThe waterproofing designer must assess retaining conditions, groundwater risk, construction type, permeability, wall and slab junctions, movement joints, cracks, service penetrations, slab levels, internal use and acceptable consequence of failure. Where Grade 3 protection is required and retained ground exceeds 600mm, the BBA certificate requires CM3 to be combined with Type A or Type B protection.\u003c\/p\u003e\n\u003cp\u003eEvery part of the cavity must connect continuously to drainage. The wall membrane, floor membrane, Waterguard, Floor Drain, outlets, sumps and discharge pipework should form a coordinated route without sealed pockets, backfalls, trapped sections or details that direct water onto a joint. The shallow 3mm cavity makes cleanliness and continuity particularly important.\u003c\/p\u003e\n\u003cp\u003eWhere pumping is essential, the design should consider duty and standby pumps, separate electrical supplies where appropriate, high-water alarms, battery back-up, telemetry and safe discharge. Receiving drainage must accept the design flow without surcharging, freezing or returning water towards the protected structure.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates And Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm3-substrates-table-swipe {\n    display: none;\n    margin: 0 0 6px;\n    color: #555;\n    font: 600 13px\/1.3 inherit;\n  }\n\n  .pc-wykamol-cm3-substrates-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n    position: relative;\n  }\n\n  .pc-wykamol-cm3-substrates-table {\n    width: 100%;\n    min-width: 1000px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-substrates-table th,\n  .pc-wykamol-cm3-substrates-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    text-align: left;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-main-title {\n    padding: 14px 18px;\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-column-head {\n    background: #a6a6a6;\n    color: #111;\n    text-align: left;\n    font-size: 18px;\n    line-height: 1.25;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-data-row {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-data-row.pc-grey {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-area-cell {\n    color: #111;\n    text-align: left;\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-plain-list {\n    margin: 0;\n    padding: 0;\n    list-style: none;\n  }\n\n  .pc-wykamol-cm3-substrates-table .pc-plain-list li + li {\n    margin-top: 2px;\n  }\n\n  @media screen and (max-width: 767px), (hover: none) and (pointer: coarse) {\n    .pc-wykamol-cm3-substrates-table-swipe {\n      display: block;\n    }\n\n    .pc-wykamol-cm3-substrates-table {\n      min-width: 900px;\n      font-size: 14px;\n    }\n\n    .pc-wykamol-cm3-substrates-table th,\n    .pc-wykamol-cm3-substrates-table td {\n      border-width: 4px;\n      padding: 7px 9px;\n    }\n\n    .pc-wykamol-cm3-substrates-table .pc-main-title {\n      padding: 11px 13px;\n      font-size: 23px;\n    }\n\n    .pc-wykamol-cm3-substrates-table .pc-column-head {\n      font-size: 16px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-wykamol-cm3-substrates-table-wrap\" role=\"region\" tabindex=\"0\"\u003e\n\u003ctable class=\"pc-wykamol-cm3-substrates-table\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 14%;\"\u003e \u003ccol style=\"width: 23%;\"\u003e \u003ccol style=\"width: 26%;\"\u003e \u003ccol style=\"width: 37%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-main-title\" colspan=\"4\" scope=\"colgroup\"\u003eWykamol CM3 Waterproof Membrane Suitable Substrates And Finishes\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eApplication Area\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eSuitable Substrates\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eCompatible Protection Or Finish\u003c\/th\u003e\n\u003cth class=\"pc-column-head\" scope=\"col\"\u003eKey Requirement\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eWalls\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eSound concrete.\u003c\/li\u003e\n\u003cli\u003eBrick masonry.\u003c\/li\u003e\n\u003cli\u003eConcrete blockwork.\u003c\/li\u003e\n\u003cli\u003eStone and compatible masonry.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eFloor-supported independent dry-lining frame and plasterboard.\u003c\/li\u003e\n\u003cli\u003eCompatible proprietary metal lining system.\u003c\/li\u003e\n\u003cli\u003eTreated timber battens supporting plasterboard or suitable sheeting.\u003c\/li\u003e\n\u003cli\u003eProperly restrained internal brick or block lining.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eUse sealed CM Brick Plugs in suitable backgrounds, specialist fixings where required and a finish that does not create uncontrolled penetrations.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eFloors\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eConcrete raft.\u003c\/li\u003e\n\u003cli\u003eConcrete slab.\u003c\/li\u003e\n\u003cli\u003eSuitable level concrete base.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eTongue-and-groove flooring board.\u003c\/li\u003e\n\u003cli\u003eClosed-cell insulation and compatible board.\u003c\/li\u003e\n\u003cli\u003eWykamol High Load within an approved floor build-up.\u003c\/li\u003e\n\u003cli\u003eReinforced concrete or screed.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eLay CM3 studs down, provide drainage to an outlet or perimeter channel, check imposed loads and never fix through the floor membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003cth class=\"pc-area-cell\" scope=\"row\"\u003eSoffits And Vaults\u003c\/th\u003e\n\u003ctd\u003e\n\u003cul class=\"pc-plain-list\"\u003e\n\u003cli\u003eArched or vaulted brickwork.\u003c\/li\u003e\n\u003cli\u003eConcrete formed to a dependable fall.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/td\u003e\n\u003ctd\u003eProject-specific protected dry lining or finish suitable for the arch or vault.\u003c\/td\u003e\n\u003ctd\u003eMaintain a continuous fall to drainage, prevent ponding and sagging, use sealed overhead fixings and turn the ceiling membrane down end walls by at least 200mm.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003eCM3 must be installed against a background stable enough to accept the specified fixing and support the final construction. Active structural movement, hazardous contamination, collapsing masonry and defects requiring engineered repair must be resolved before the membrane is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eComplete a specialist survey and remedy major causes of damp or water ingress that can reasonably be corrected. Repair structural defects, address leaking services, external drainage faults and defective rainwater goods, and specify any separate rising-damp or timber treatment only after the moisture mechanism has been diagnosed.\u003c\/p\u003e\n\u003cp\u003eRemove unsound plaster, render and screed. Stiff-brush the exposed substrate to remove loose material, laitance, salts, dust, mould, adhesive and organic debris. Sound existing render may remain where the surveyor and fixing specification accept it, but soft, friable or poorly bonded layers must not be relied upon to retain plugs or support finishes.\u003c\/p\u003e\n\u003cp\u003eTreat appropriate biological contamination with Wykamol Microtech Masonry Biocide in accordance with its separate label and instructions. Active dry rot, wet rot, timber decay or insect attack requires specialist assessment and a complete remedial specification; simply covering affected materials with CM3 is not acceptable.\u003c\/p\u003e\n\u003cp\u003eMake good severe depressions, open joints and unstable areas with Wykamol HydraDry Universal Mortar or another approved compatible material. A concrete base receiving board directly over the membrane should have a maximum departure of 5mm beneath a 2m straightedge. Allow repair and levelling materials to set before covering.\u003c\/p\u003e\n\u003cp\u003eApply Wykamol Anti-Lime Sealer to suitable concrete where free lime or dust could migrate into the cavity and drainage system. Keep the prepared surface and channel route free from mortar, drilling debris and sharp projections, because blockage or puncture can compromise the shallow cavity.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-421_1024x1024.webp?v=1783082714\" alt=\"Anti-lime treatment being applied to prepared concrete before Wykamol CM3 installation.\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eAnti-lime sealer being applied to prepared concrete before installation of Wykamol CM3 Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eTypical installation equipment includes a tape measure, straightedge, spirit or laser level, marker, sharp utility knife, scissors or shears, 110V SDS hammer drill, suitable 10mm masonry bits, club hammer or mallet, hand roller, clean cloths, stiff brush, vacuum or dust extraction, and a controlled hot-air gun for drying and assisting butyl adhesion where necessary. Vaults and high walls also require appropriate scaffold or access equipment.\u003c\/p\u003e\n\u003cp\u003eSet out all Wykamol CM Brick Plugs, Membrane Sealing Tape, Sealing Rope, Corner Strip Tape, Waterguard components, repair products and protection materials before work starts. Confirm that roll sizes, fixing quantities, tape lengths, channel fittings, outlets, pumps and alarms match the drawings and calculated wastage. Do not improvise critical joints with generic tapes, mastics or sealants that have not been accepted for the detail.\u003c\/p\u003e\n\u003cp\u003eTools must be clean and serviceable. Dull blades can tear the membrane, worn drill bits can oversize holes, and contaminated rollers or cloths can reduce tape adhesion. Keep butyl surfaces clean and use firm, even pressure throughout each seal. Heat should assist drying and tack only; it must not distort the studs or soften the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBelow-ground CM3 installations must include a dependable method of disposing of water that may collect behind or beneath the membrane. Floors require a drainage outlet and a suitable fall towards it, or a perimeter drainage channel connected to a safe gravity outlet or correctly sized sump-and-pump arrangement.\u003c\/p\u003e\n\u003cp\u003eWykamol Waterguard is normally positioned at the vulnerable wall-to-floor junction, while Floor Drain can provide cross-floor routes, threshold details or a connection to a central sump. The channel layout must collect water from every membrane cavity and structural junction without relying on water to cross unplanned obstructions or sealed pockets.\u003c\/p\u003e\n\u003cp\u003eProvide inspection and jetting access at suitable locations, including changes of direction and channel runs that require future cleaning. Covers and access eyes must remain reachable after screed, flooring, dry lining and joinery are completed. Record their locations before concealment and include them in the owner’s maintenance information.\u003c\/p\u003e\n\u003cp\u003eIf pumps are required, calculate inflow, duty point, static head, friction losses, discharge distance and chamber volume. Consider pump redundancy, high-water alarms, power-loss resilience and telemetry according to risk. The final discharge point must be lawful, dependable and arranged so water cannot flow back towards the building.\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM3_Membrane_5_1024x1024.png?v=1786974284\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eWykamol Waterguard Channel positioned at the wall-to-floor junction to collect water from behind Wykamol CM3 Waterproof Membrane, with the specified compatible sealing and insulated floor build-up maintaining continuity to the drainage system.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWykamol Waterguard And Floor Drain Preparation And Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eForm the Waterguard route at the wall-to-floor junction in accordance with the current Wykamol channel instructions and project drawings. The supporting bed must be stable and level, and the channel must not be distorted or obstructed by mortar, debris or uneven infill. Position the upstand against the wall membrane detail so collected water can enter the channel freely.\u003c\/p\u003e\n\u003cp\u003eJoin channel lengths with the correct Wykamol components. Use Swept Corners at 90° direction changes, T-Pieces where perimeter and cross-floor runs meet, and Floor Drain where a channel without a wall upstand is required. Connect the selected 50mm End Outlet or Universal Channel Outlet to approved pipework leading towards the sump, gully or gravity discharge.\u003c\/p\u003e\n\u003cp\u003eInstall Flexible or Extended Jetting Eyes where the maintenance design requires them, ensuring each remains reachable after the final floor build-up. Keep internal channel surfaces clean and check that each connection presents an uninterrupted flow path. Do not rely on adhesive, foam or improvised fittings that could create an internal lip or detach later.\u003c\/p\u003e\n\u003cp\u003eBefore concealing the drainage system, flush it with clean water and confirm flow to the outlet or sump. Inspect joints, corners, access points and discharge pipework, then photograph and record the installed layout. Where a pump is fitted, test normal operation, alarm function, back-up provision and discharge under controlled conditions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCM3 may be installed vertically or horizontally. Measure the wall carefully and cut the roll on a clean, protected surface with a sharp knife, scissors or shears. Position the sheet with the studs towards the wall and the flat face towards the room, keeping it level and tight into corners without excessive stretching, bridging or distortion.\u003c\/p\u003e\n\u003cp\u003eBegin at the top of the wall and make sufficient initial fixings to support the sheet before completing the chosen fixing pattern. Drill a 10mm hole centrally through a membrane stud and into sound masonry to the depth required by the CM Brick Plug. Minimise drilling dust behind the sheet and avoid striking edges between studs.\u003c\/p\u003e\n\u003cp\u003eInsert a CM Brick Plug With Seal and drive it fully home so the elastomer washer is visibly compressed against the membrane. Where an unsealed plug and Wykamol Sealing Rope detail is specified, form a continuous ring around the plug so the butyl compresses into a watertight gasket. Reject loose or poorly sealed fixings and repair the location correctly.\u003c\/p\u003e\n\u003cp\u003eContinue the membrane into ceiling voids and down to the floor or drainage detail where possible. Return it onto adjacent walls sufficiently to isolate the final lining, and plan openings before fixing. Electrical points, cables, pipework and switches should remain on the dry side wherever practicable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFixing density depends on the selected dry-lining system and substrate. The BBA detail gives maximum centres of 400mm vertically and 600mm horizontally for preservative-treated timber battens. Proprietary metal or independent frames may require fewer membrane fixings, but enough must be installed to hold CM3 reasonably tight, particularly around corners, openings and junctions.\u003c\/p\u003e\n\u003cp\u003eUse preservative-treated timber battens at least 25mm x 38mm where the lining design relies on battens. Fix suitable screws into the central core of CM Brick Plugs so no separate hole is made through the membrane. Maximum screw penetration into the plug is 30mm plus the batten depth, and every screw must stop short of the HDPE behind the batten.\u003c\/p\u003e\n\u003cp\u003eAn independent floor-supported frame avoids routine secondary fixing through CM3 and can suit irregular substrates or service zones. Compatible proprietary metal lining systems and correctly restrained internal masonry linings may also be used where their loads and ties have been designed without uncontrolled penetrations.\u003c\/p\u003e\n\u003cp\u003eFix plasterboard or other approved lining boards so nails and screws penetrate less than the batten depth. Keep services in front of CM3 and support heavy fittings from predetermined battens or structural fixings. Only exceptional through-fixings should penetrate the membrane, and each requires a designed sealed detail.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM3_Membrane_6_1024x1024.png?v=1786974636\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eWykamol CM Brick Plugs \u0026amp; Seals fixing Wykamol CM3 to the wall, with fixing centres set to suit the internal finish, typically 600mm vertically and 400mm horizontally for timber battens.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing And Sealing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM3 has no flange. Position adjacent sheets edge to edge as a close, accurately aligned butt joint, keeping the cut edges straight and free from gaps, overlaps or distorted studs. Clean and dry the membrane face on both sides of the joint before sealing.\u003c\/p\u003e\n\u003cp\u003eApply 150mm Wykamol Corner Strip Tape centrally over the joint so approximately equal tape width bonds to each sheet. Press it firmly with a hand roller or palm, working progressively along the joint to remove wrinkles, bridging and trapped air while maintaining full contact across both membrane faces.\u003c\/p\u003e\n\u003cp\u003eIn cold or damp conditions, dry the HDPE gently with a controlled hot-air gun and warm the butyl only enough to improve tack. Never seal over visible water, dust, mortar, grease or loose contamination. Use continuous tape lengths where practicable, and carefully lap any unavoidable tape ends in accordance with current Wykamol guidance.\u003c\/p\u003e\n\u003cp\u003eStraight joints may run vertically or horizontally, but unnecessary joints should be avoided and the membrane must remain flat on both sides of every connection. Inspect the complete seal before concealment and repair damaged areas with compatible CM3 and the specified Wykamol tape or rope arrangement.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM3_Membrane_7_1024x1024.png?v=1786974637\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall-To-Floor Junction And Waterguard Integration\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe wall-to-floor junction must transfer water from behind CM3 into Wykamol Waterguard without leaving a sealed pocket or unprotected gap. Position the wall membrane and channel upstand to the approved project detail, then clean and dry the surfaces before applying Wykamol Corner Strip Tape.\u003c\/p\u003e\n\u003cp\u003eWhere CM3 continues across the floor, turn the floor membrane up at the wall and seal it to the wall membrane or Waterguard upstand with Corner Strip Tape as specified. Form corners neatly and avoid bunching the membrane, blocking drainage holes or pulling the tape across unsupported voids.\u003c\/p\u003e\n\u003cp\u003eIf the finished floor build-up extends above the effective Waterguard upstand, the waterproofing designer must provide a compatible detail that allows condensation from the room-facing surface of CM3 to enter the drainage system without obstructing water from the structural side. Use only components confirmed as compatible with the specified Wykamol system, keep the collection route open and coordinate the detail with the project’s ventilation and humidity-control strategy.\u003c\/p\u003e\n\u003cp\u003eBefore floor finishes are installed, pour controlled clean water behind the wall membrane and confirm that it enters Waterguard and reaches the outlet or sump. Rectify slow flow, leakage, trapped sections and unsealed junctions before the system is concealed.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM3_Membrane_5_1024x1024.png?v=1786974284\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProvide a suitable outlet and fall or install the designed Waterguard and Floor Drain layout before laying CM3. The concrete base must be clean, stable and free from sharp projections. Where board will lie directly over the membrane, the BBA requires a maximum surface departure of 5mm beneath a 2m straightedge.\u003c\/p\u003e\n\u003cp\u003eRoll CM3 across the floor with the studs facing down. Cut sheets neatly around the perimeter, channels, columns and unavoidable services without stretching or distorting the studs. The floor membrane must remain loose laid and must never be fixed through to the slab.\u003c\/p\u003e\n\u003cp\u003eBring adjacent floor sheets together as clean, close butt joints without overlapping the membrane. Centre 150mm Wykamol Corner Strip Tape over each joint, press firmly across its full width and check that both edges remain aligned while the seal is formed. The finished floor membrane must remain continuous and free from open edges, wrinkles or trapped debris.\u003c\/p\u003e\n\u003cp\u003eProtect CM3 promptly. Suitable tongue-and-groove board should be loose laid with a 10mm perimeter expansion gap and staggered, bonded joints. Closed-cell XPS of at least 30kg\/m³ density may be placed above CM3 where specified. Wykamol High Load can be incorporated within a compatible drained and load-checked floor design. Alternatively, use at least 50mm reinforced concrete or screed directly over CM3, or at least 65mm where laid over insulation, in accordance with BS 8204-1 and the project specification.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Newton_503_Membrane_3_1024x1024.png?v=1786715577\" alt=\"\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCM3 may be installed to suitable arched or vaulted ceilings where the construction provides a continuous fall to drainage. Survey the curve, end walls, joints and outlet route before cutting so the membrane can follow the substrate without excessive tension, open folds or areas of sagging that could retain water.\u003c\/p\u003e\n\u003cp\u003ePosition the membrane studs towards the soffit and support it with sealed Wykamol CM Brick Plugs. Where a standard elastomer washer does not seat evenly on the curve, use CM Brick Plugs Without Seals with a continuous ring of Wykamol Sealing Rope, driven firmly enough to compress the butyl into a watertight gasket.\u003c\/p\u003e\n\u003cp\u003eWhere separate sections meet across the vault, form a close butt joint and seal it centrally with 150mm Wykamol Corner Strip Tape. Plan shaped cuts carefully and keep the number of joints to a practical minimum. Prevent sagging between fixings so no pocket can hold water or debris.\u003c\/p\u003e\n\u003cp\u003eAt each end wall, turn the vault membrane down by at least 200mm. Mitre only as necessary to follow the curve, seal every cut with approved tape or rope, and fit the wall membrane in front of the turned-down ceiling sheet so water continues towards the designed drainage route.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat below-ground soffits should not be lined with CM3. The Wykamol technical data requires a minimum slope of 10% so any water behind the membrane can move towards the designed drainage point instead of ponding against the sheet or a sealed joint.\u003c\/p\u003e\n\u003cp\u003eWhere the soffit does not provide this dependable fall, select another waterproofing approach through the project designer. Do not attempt to create drainage by allowing the membrane to hang or by relying on a loose sheet to form channels, because sagging creates uncontrolled pockets and places stress on fixings and joints.\u003c\/p\u003e\n\u003cp\u003eArched, vaulted or suitably sloping soffits must still be checked across their complete width and length. Local depressions, ribs, beams, abutments and changes of direction can interrupt the fall even when the general geometry appears adequate. Resolve those details before installation and ensure every cavity terminates at a safe collection route.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRun CM3 continuously around internal and external corners where the sheet can be folded neatly without excessive distortion. Form a square crease and fix the membrane tightly into the angle so the final lining remains straight and the cavity does not bridge across the corner.\u003c\/p\u003e\n\u003cp\u003eIf the sheet becomes misshapen around a return, stop at the corner and begin a new piece rather than forcing a distorted fold. Seal the adjoining edges with Wykamol Corner Strip Tape or the approved rope and over-seal arrangement. Keep all faces clean, dry and fully supported while pressure is applied.\u003c\/p\u003e\n\u003cp\u003eWhere possible, install CM3 across window openings and cut it away afterwards so the main sheet remains continuous. Seal the exposed perimeter using the correct combination of Membrane Sealing Tape, Sealing Rope and Corner Strip Tape. At doors or fixed obstacles where this method is impossible, bring the membrane accurately to the perimeter and seal the gap with the same care.\u003c\/p\u003e\n\u003cp\u003eCoordinate thresholds with Wykamol Floor Drain, Waterguard or a suitable DPC before fixing. Avoid isolated cavities beside frames, and never leave an unsealed reveal or return where water can bypass the membrane and reach the dry lining.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Wykamol CM3\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eAvoid services through the membrane wherever practical and route pipes, cables, conduits, sockets and controls on the dry side. Where a penetration is unavoidable, establish its position before cutting and keep the opening as small and regular as possible.\u003c\/p\u003e\n\u003cp\u003eFor floor services, trim CM3 to within approximately 5mm to 10mm of the pipe or conduit and fill the gap completely with Wykamol Sealing Rope. Where necessary, add a compatible membrane or DPC patch, seal it to the service with rope and seal its outer edge with Membrane Sealing Tape or Corner Strip Tape.\u003c\/p\u003e\n\u003cp\u003eUse suitable proprietary collars or sleeves for larger, grouped, moving, hot or irregular services where a simple rope-and-patch detail cannot provide durable continuity. The service material, temperature, expected movement and future replacement method must be compatible with the selected seal.\u003c\/p\u003e\n\u003cp\u003eExceptional structural fixings through a lined wall require a predetermined load-bearing and waterproofing detail. Fix heavy objects into designed battens or structural supports wherever possible. Any hole through CM3 must be packed and sealed with compatible flexible butyl products before it is concealed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Wykamol CM3 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eProtect CM3 from sharp tools, dropped fixings, masonry fragments, wheelbarrows, ladders and concentrated foot traffic as soon as each area is complete. Although the BBA records good puncture resistance under normal installation traffic, a concealed tear or crushed drainage path can compromise the finished system.\u003c\/p\u003e\n\u003cp\u003eKeep ultraviolet light, high temperatures, open flame and incompatible chemicals away from exposed rolls and installed sheets. Do not leave CM3 uncovered longer than necessary, and prevent wet trades from dropping mortar, screed or plaster into the cavity, Waterguard or inspection points.\u003c\/p\u003e\n\u003cp\u003eCoordinate all subsequent work through one responsible person. Electricians, plumbers, joiners, dry liners and floor installers must understand that they cannot drill, nail or screw through the membrane without an approved sealed detail. Mark restricted fixing zones and provide predetermined battens or service routes before finishes are closed.\u003c\/p\u003e\n\u003cp\u003eWhere temporary protection board is used, ensure it does not crush the studs or block drainage. Remove protective materials carefully, inspect the complete membrane and clean the channels immediately before applying permanent floor or wall protection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCM3 has very high resistance to vapour diffusion. When positioned on the cold side of insulation, it can increase interstitial-condensation risk unless the wall or floor build-up and internal environment are designed properly. Carry out the appropriate BS 5250:2021 assessment and consider a vapour-control layer on the warm side where required.\u003c\/p\u003e\n\u003cp\u003eHabitable basements and Grade 3 spaces normally need planned mechanical ventilation, background heating or another specialist environmental-control strategy. The required air-change rate, extract location, make-up air, noise, energy use and control method must be designed for the room’s occupancy and moisture generation.\u003c\/p\u003e\n\u003cp\u003eDo not assume that opening the cavity to the room will solve condensation. A below-ground system may need to remain sealed because of odours, vermin, moisture movement or waterproofing continuity. Any high- and low-level aeration slots used in an above-ground damp-proof dry-lining application must follow the specific design rather than being added routinely.\u003c\/p\u003e\n\u003cp\u003eMonitor relative humidity after completion and address persistent sources such as wet construction materials, clothes drying, unvented appliances or inadequate extraction. Waterproofing controls ground water; it does not replace normal management of indoor moisture and air quality.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInspect the full CM3 installation before dry lining, flooring, concrete or screed conceals it. Confirm that the membrane is correctly orientated, tight to walls and vaults, studs are not crushed, every fixing is sealed and no tears, open edges, wrinkles or unsupported joints remain.\u003c\/p\u003e\n\u003cp\u003eCheck every butt joint, corner, window and door detail, service penetration, wall-to-floor transition and Waterguard connection. Confirm that 150mm Corner Strip Tape remains centred over each sheet joint, then roll it firmly and replace any section contaminated by dust, water, oil or loose debris rather than attempting to press it back into service.\u003c\/p\u003e\n\u003cp\u003eVacuum the cavity edges and drainage channel. Flush Waterguard and Floor Drain with clean water and verify free movement to the outlet or sump. Operate pumps, high-water alarms and any back-up system, and check that discharge cannot return towards the structure.\u003c\/p\u003e\n\u003cp\u003ePhotograph the finished membrane, channels, outlets, sump, pipework and all concealed details. Record dimensions from permanent reference points and complete the installer’s inspection documentation. Do not approve concealment until defects are repaired and the system performs as intended.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Wykamol CM3\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eRepair damage before it is concealed. Clean and dry the affected CM3 thoroughly, trim ragged material where necessary and assess whether the studs and cavity remain serviceable. A small clean puncture may be repaired with the approved Wykamol tape detail, while a larger tear requires a compatible patch extending well beyond sound membrane on every side.\u003c\/p\u003e\n\u003cp\u003eUse Wykamol Sealing Rope around irregular holes, plug penetrations or three-dimensional details, then secure the repair with Membrane Sealing Tape or Corner Strip Tape as appropriate. Apply firm pressure across the complete seal and use controlled warmth only if needed to remove surface moisture or improve butyl tack.\u003c\/p\u003e\n\u003cp\u003eWhere damage has crushed a significant area of studs, affected a critical joint, or occurred beside a channel, penetration or wall-to-floor junction, replace the membrane section or obtain a project-specific repair detail. A flat patch that seals the face but blocks the drainage cavity is not acceptable.\u003c\/p\u003e\n\u003cp\u003eAfter repair, repeat the relevant inspection and controlled water test. Photograph the completed work and add it to the waterproofing record so later owners and contractors understand the location and method of the concealed repair.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe protected CM3 sheet itself does not require routine maintenance under normal service conditions. The drainage system that makes Type C waterproofing function does. Waterguard, Floor Drain, jetting eyes, outlets, sumps, pumps, alarms, back-up power and discharge pipework must remain accessible and be inspected and serviced at the intervals set by the system designer and equipment manufacturers.\u003c\/p\u003e\n\u003cp\u003eFlush drainage channels through the provided access points and remove lime, silt or debris before it restricts flow. Test pumps and float switches, clean sump chambers, operate alarms and confirm back-up systems under controlled conditions. Keep written service records and investigate changes in pump frequency, unusual noise, odour, dampness or water level promptly.\u003c\/p\u003e\n\u003cp\u003eFuture shelving, cupboards, skirtings, flooring, services and wall-mounted equipment must not be fixed through CM3 casually. Use recorded battens and designed support points, or obtain a waterproofing detail for each new penetration. Even a small unsealed fixing can provide a route for water to bypass the system.\u003c\/p\u003e\n\u003cp\u003eProvide the owner with drawings, photographs, product information, test records, access-point locations, pump manuals and maintenance contacts. Any contractor altering the space should review this information before drilling, lifting floors or opening linings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eCM3 is a cavity drain membrane and is not resistant to hydrostatic pressure as a standalone barrier; it requires a complete designed drainage and discharge system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eThe shallow 3mm cavity must remain clean and unobstructed, making control of drilling dust, mortar, lime deposits, silt and crushed studs particularly important.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWhere Grade 3 protection is required and retained ground exceeds 600mm, BBA Certificate 18\/5595 requires CM3 to be combined with Type A or Type B protection.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCM3 has not been BBA assessed for chemically contaminated brownfield sites; hazardous or unknown contamination requires specialist investigation and project-specific materials assessment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFlat below-ground soffits are unsuitable. Vaulted, arched or sloping soffits require a dependable minimum 10% fall and fixing sufficient to prevent sagging and ponding.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eFloor membrane must never be punctured by fixings. Screed, board, insulation and Wykamol High Load build-ups require appropriate support, drainage and load checking.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eVery high vapour resistance can increase condensation risk when CM3 lies on the cold side of insulation; ventilation, heating and BS 5250 assessment remain essential.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCM3 must be protected from fire, impact, ultraviolet exposure, high temperatures and uncontrolled penetrations by later trades throughout installation and service.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCM3 sheet-to-sheet joints must be formed as close butt joints and sealed centrally with 150mm Wykamol Corner Strip Tape; do not overlap the sheets or attempt to create a flange.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePumps, alarms, battery back-up and telemetry do not eliminate risk. Their capacity, power provision, discharge and service regime must match the consequences of failure.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStorage And Shelf Life\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eStore CM3 rolls upright, in their original protective wrapping, under cover and away from sharp objects, direct sunlight, high temperatures and open flame. Do not stack or position the rolls where they may be crushed, distorted or punctured by other materials.\u003c\/p\u003e\n\u003cp\u003eKeep tapes, rope, plug seals and other butyl products clean, dry and within the temperature conditions stated on their own packaging. Protect Waterguard components from impact and deformation, and store cementitious products, biocides and Anti-Lime Sealer according to their separate labels and safety information.\u003c\/p\u003e\n\u003cp\u003eWykamol states a service life equal to that of the structure for correctly installed and protected CM3, rather than a finite shelf life for the wrapped roll. Inspect all stored materials before use and reject membrane with brittle areas, damaged studs, contamination or prolonged uncontrolled exposure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eCM3 is recyclable polyethylene, subject to clean recovery and the recycling facilities available at the time of removal. Offcuts contaminated with butyl tape, mortar, hazardous substrate material or other site waste must be handled through the appropriate waste stream.\u003c\/p\u003e\n\u003cp\u003eTechnical values describe laboratory or declared product performance and do not determine the suitability of a complete wall or floor. Structural loading, insulation, screed reinforcement, fire performance, condensation, drainage capacity, groundwater, penetrations and final occupancy require separate project-specific assessment.\u003c\/p\u003e\n\u003cp\u003eUse the latest applicable Wykamol technical data sheet, BBA Agrément Certificate 18\/5595, Declaration of Performance and instructions for every system component. Installation must also follow the project-specific waterproofing design and any applicable Building Control or structural-warranty requirements. Where site conditions fall outside the published scope, obtain project-specific advice from Wykamol and the waterproofing designer before work begins.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Wykamol CM3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 Waterproof Membrane is a high-density polyethylene cavity-drain sheet with a compact 3mm studded profile. It is designed for internal waterproofing and damp-proofing on suitable walls, floors, vaults and tunnels. The studs hold the flat face away from the substrate, creating a shallow air or depressurisation gap that separates the new internal finish from damp, salts and contaminated masonry. Below ground, CM3 forms part of a Type C drained-protection system connected to appropriate drainage and discharge. Above ground, it can isolate dry lining, battens or an internal block wall from a damp background. The product is non-meshed, so it requires a compatible protected finish rather than direct plaster or render.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Wykamol CM3 work as Type C waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 manages water after it enters the structure instead of trying to resist all hydrostatic pressure at the internal surface. Its 3mm studs create a controlled cavity behind or beneath the membrane. Water can move through this space towards Wykamol Waterguard, another compatible floor-drainage route, a safe gravity outlet or a correctly sized sump-and-pump system. The room-facing side remains separated from the damp, salt-contaminated substrate, helping protect plasterboard, flooring and decorative finishes. This approach is called Type C drained protection. CM3 cannot perform reliably as an isolated sheet: joints, fixing points, wall-to-floor transitions, penetrations, drainage capacity, discharge arrangements, inspection access and long-term maintenance must all operate together as one coordinated system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM3 be used for above-ground damp proofing?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 can be used above ground as a damp-proofing membrane where a meshed surface is not required. Typical finishes include timber battens and plasterboard, a dry-lining frame or an internal brick or block lining. The membrane separates the finish from damp, salts or a defective background and helps control water vapour. It should not be used merely to hide avoidable moisture. Defective rainwater goods, leaking plumbing, poor pointing, high external ground levels and other sources should be corrected wherever practical. Where rising damp is correctly diagnosed, an appropriate damp-proof course may be installed before CM3. Any mould, rot, structural weakness or hazardous contamination also requires proper assessment and treatment before the wall is enclosed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why does Wykamol CM3 have a 3mm studded profile?\u003c\/h3\u003e\n\u003cp\u003eA) The 3mm profile provides a shallow cavity while using very little internal space. This makes Wykamol CM3 particularly useful near stairs, low ceilings, door details, narrow passages and floor build-ups where a deeper membrane would reduce headroom or usable room dimensions. It can also make refurbishment easier when finished levels must align with existing thresholds. The trade-off is that a shallow cavity is more sensitive to obstruction. Mortar, drilling dust, loose debris, silt, limescale or standing water can reduce the available drainage path. The substrate, floor levels and Waterguard connections therefore need careful preparation and testing. A 3mm membrane should be selected because it suits the project’s water flow, loading and space constraints, not simply because it is thinner.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which roll sizes are available for Wykamol CM3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 is available in 2m-wide rolls measuring either 10m or 20m long. These provide nominal gross areas of 20m² and 40m² respectively. The quoted area is the uncut sheet size rather than guaranteed completed coverage. Measure every wall, floor, return, reveal, column, opening, vault and junction before ordering, then allow for trimming, shaped details, repairs and reasonable waste. CM3 does not have a normal flat flange, so standard wall and floor sheet connections are close butt joints sealed with 150mm Wykamol Corner Strip Tape. Calculate tape, CM Brick Plugs, Wykamol Rope, Waterguard and other ancillaries separately because their quantities depend on the sheet orientation, fixing pattern, room geometry and drainage design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main advantages of Wykamol CM3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 combines low build-up depth with the flexibility to waterproof below-ground structures or damp-proof suitable walls above ground. Its 3mm profile preserves headroom and floor area, while the HDPE sheet is quick to cut, position and mechanically fix. It can isolate damp or salt-contaminated surfaces without the extensive preparation sometimes required for a fully bonded coating, provided loose and unsafe material is removed. The membrane supplies vapour control, resists water, salts, roots and contaminants, and has no curing period of its own. BBA certification and published performance data support specification within the approved system scope. These benefits still depend on competent design, correct butt-joint sealing, protected finishes, effective drainage where required and maintenance of channels, sumps and pumps.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Where can Wykamol CM3 Waterproof Membrane be used?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 can be used on appropriate walls, floors, vaults and tunnels in domestic or commercial projects. Below-ground applications include basements, cellar conversions, earth-retained walls, underground stores, corridors and plant areas connected to designed drainage. Above ground, the membrane can isolate dry lining or an internal wall from residual damp, salts or a defective background where the moisture cause has been properly assessed. Its shallow profile is valuable around stairs, low headroom, narrow spaces and constrained floor levels. CM3 is not automatically suitable for every wet surface. The structure, water risk, substrate strength, intended room use, finish, drainage capacity and access for maintenance must all be checked before installation, especially on habitable or high-risk schemes.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM3 help create a habitable Grade 3 basement?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 can contribute to a waterproofing system designed to provide Grade 3 internal conditions, where water penetration and dampness are unacceptable, as commonly required for habitable basements. The membrane isolates internal finishes from the retaining structure and directs incoming water towards controlled drainage. CM3 does not achieve Grade 3 performance on its own. The structure, anticipated water ingress, sealed details, drainage capacity, gravity or pumped discharge, pump resilience, alarms, ventilation, humidity control, heating and maintenance must work together as part of a project-specific waterproofing design. Current projects should be designed in accordance with BS 8102:2022 and any applicable Building Control, warranty and project requirements by a competent waterproofing design specialist.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM3 be installed on both walls and floors?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 is suitable for wall and floor use, although its orientation, restraint and finishing details differ. On walls, the studs face the substrate and the flat face points towards the installer. The membrane is mechanically secured using appropriate sealed CM Brick Plugs or Cob Plugs where the mortar is slightly friable. On floors, CM3 is normally loose-laid with the studs facing down, cut to the room perimeter and connected to the wall membrane and Waterguard upstand. Adjacent sheets form butt joints sealed with 150mm Corner Strip Tape. The floor membrane must not be punctured by fixings and requires a compatible load-spreading finish. In both applications, water must have an unobstructed route to the designed discharge point.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which substrates are suitable for Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 can be fixed to suitable brick, blockwork, concrete, stone, stable render and comparable masonry backgrounds capable of holding the specified plugs. Slightly friable mortar may require Wykamol Cob Plugs rather than standard CM Brick Plugs. On floors, the supporting slab or screed must be sound, level and free from sharp projections or debris. Sound render may remain, but loose or crumbling render, unsound plaster and defective screed should be removed. The membrane should not conceal structural movement, unstable masonry, collapsing finishes, running water beyond the system’s capacity or hazardous materials. Deep voids and severe irregularities require suitable repair. The substrate does not need to be cosmetically perfect, but it must support secure fixing, unimpeded drainage and the proposed internal lining.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should a wall or floor be prepared before installing CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Remove loose debris, organic matter, unsound plaster, weak render and defective screed. Sound render may remain if it is firmly bonded and will not undermine fixing security. Level severe depressions and repair unstable areas with a compatible mortar, allowing all new work to dry thoroughly before fixing the membrane. Brush visible mould or masonry fungal growth from the surface and apply a suitable masonry biocide in accordance with its instructions. Dry rot requires detailed specialist assessment, while wet rot and affected timber should be treated by a qualified remedial contractor. Floors must be clean, stable and sufficiently even. Above ground, reduce avoidable moisture at source wherever practical, including defective plumbing, rainwater goods or an absent damp-proof course where rising damp has been correctly diagnosed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Wykamol CM3 installed on a wall?\u003c\/h3\u003e\n\u003cp\u003eA) Cut the membrane to size with a sharp knife, scissors or shears and position it with the studs against the wall. Where practical, continue it into the ceiling void and down beyond the slab; otherwise, finish it tightly at the soffit and floor detail. Set the sheet level using a long builder’s level or rotating laser. Drill through the centre of selected studs with a 10mm SDS bit to a minimum depth of 60mm, then insert the appropriate plug and drive it home with a wide-headed hammer or mallet. Add sufficient fixings to hold the membrane neatly and to support the intended lining. Butt adjoining sheets together, seal them with Corner Strip Tape and inspect all joints, corners and penetrations before covering.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which plugs and fixing centres are used with Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Standard wall areas normally use Wykamol CM Brick Plugs, while slightly friable mortar may require Cob Plugs. Fix through the centre of a stud into a clean 10mm hole at least 60mm deep. Centres depend on the final lining: typical guidance is 600mm vertically by 400mm horizontally for timber battens and 800mm vertically by 600mm horizontally for fixed metal-track systems. Barrel vault guidance uses approximately 300mm around the curve and 600mm along its length. Free-standing frames or walls do not need a support grid tied to the membrane, but enough plugs must hold it neat and tight. Align every fixing row and increase restraint at corners, reveals, edges or overhead areas where sagging could occur.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are Wykamol CM3 sheet joints sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Standard CM3 has no flat jointing flange, so adjoining sheets are brought together edge to edge as a close butt joint. Clean and dry both membrane faces, then centre 150mm-wide Wykamol Corner Strip Tape over the joint. Press the entire tape surface firmly with the palm or a suitable roller so it bonds continuously without wrinkles, fish-mouths or trapped debris. In cold or damp conditions, carefully use a hot-air gun to evaporate light surface moisture and assist bonding, but never overheat or distort the HDPE. Wykamol Membrane Tape is used for compatible DPC interfaces and particular lapped details rather than as the standard face seal over a CM3 butt joint. Inspect every junction before it becomes inaccessible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should corners, returns and door reveals be detailed?\u003c\/h3\u003e\n\u003cp\u003eA) Take Wykamol CM3 neatly around internal and external corners where possible, forming square creases without stretching the sheet or crushing its studs. If wall contours cause the membrane to distort, stop, make a controlled cut and begin again with a new butt joint sealed by Corner Strip Tape. Extend the membrane onto return walls so dampness cannot bypass the treated face and contaminate adjacent finishes. At door openings in vaulted work, a separate head section may lap approximately 100mm down the sides before the wall sheet wraps into the reveal. Seal small angled gaps with Corner Strip Tape. Keep cuts to a minimum, use compatible patches or Wykamol Rope where required and leave each complex detail visible for inspection.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Wykamol CM3 require Waterguard drainage or a sump?\u003c\/h3\u003e\n\u003cp\u003eA) In a full or partly earth-retaining application, Wykamol CM3 must connect to effective drainage. Wykamol Waterguard is commonly installed at the wall-to-floor junction to collect water from behind the wall membrane and the structural junction. It can connect to Floor Drain routes, a safe gravity outlet, gully, waste pipe or suitable sump-and-pump arrangement. The discharge must handle anticipated water flow without backing up towards the waterproofed space. Standing water can carry silt or limescale into the shallow cavity and obstruct it, so drainage should be continuous and maintainable. Flexible jetting eyes provide access for checking and flushing Waterguard. Pumps, alarms, backup provision, pipework and inspection access should be specified from the project’s water-risk assessment and consequences of failure.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How is Wykamol CM3 installed on a floor?\u003c\/h3\u003e\n\u003cp\u003eA) Begin at one side of the room and unroll Wykamol CM3 with its studs facing down, cutting it accurately to the perimeter in a similar manner to fitting a carpet. Lay the next width so the edges meet as a close butt joint. Clean and dry both faces, centre 150mm Corner Strip Tape over the joint and apply firm pressure across its complete width. Seal the floor membrane to the Waterguard upstand with the specified tape detail, maintaining a route for water to enter the channel. Compatible horizontal DPC connections use Wykamol Membrane Tape. Avoid all fixings through the floor membrane, protect it from tools and debris, and confirm drainage flow before installing the specified load-spreading floor finish.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM3 be laid over green concrete to speed up finishing?\u003c\/h3\u003e\n\u003cp\u003eA) The product guidance states that a suitable floor membrane can be laid over green concrete once the surface is sufficiently firm to walk on, allowing the dry-side floor build-up to proceed without waiting for conventional concrete relative-humidity targets. Construction moisture continues to cure beneath the membrane and is controlled within the air gap. This fast-track approach can shorten programmes, but it is not permission to ignore structural strength, surface regularity, drainage, slab design or the requirements of the chosen floor finish. The membrane must be specified for the complete build-up, protected from punctures and connected correctly to drainage where required. Levelling compounds, adhesives, screeds and other associated products remain subject to their individual curing and compatibility instructions.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How should pipes and services passing through Wykamol CM3 be sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Services should be routed on the dry side of the membrane wherever possible, particularly in floors and overhead areas where penetrations create significant weaknesses. If a pipe, cable, conduit or duct must pass through CM3, cut the sheet neatly and keep the opening as small as practical. Floor guidance permits the gap to be filled and sealed with a suitable high-quality MS or SMX polymer adhesive. Where greater detailing is needed, apply a CM3 or compatible DPC patch, seal it to the service with compressed Wykamol Rope and seal its perimeter with Wykamol Membrane Tape or the specified compatible tape. Check movement, temperature and future access, inspect the entire circumference and photograph the detail before concealment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Which wall and floor finishes are compatible with Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Suitable wall finishes include treated timber battens with plasterboard, a free-standing timber or metal dry-lining frame, compatible proprietary metal-track systems and a properly restrained internal brick or block wall. Battens should be at least 25mm x 38mm, although 25mm x 50mm can support board edges more effectively. They may be attached to the hollow plug cores using controlled-length 5mm self-tapping screws. Floor finishes must protect and spread loads over the membrane and may include compatible boards, timber systems or other project-specified constructions. No fixing may penetrate the floor sheet. Every finish must meet structural, fire, thermal, acoustic and moisture requirements while leaving Waterguard jetting points, sump covers and other maintainable components accessible after completion.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can plaster or render be applied directly to Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Direct plaster or render should not be applied to standard Wykamol CM3 because it is a non-meshed HDPE membrane and does not provide the required mechanical key. The usual solution is a protected dry-lining arrangement, treated battens and boards, a free-standing frame, proprietary metal lining or an internal masonry wall. Fixings for battens or brackets should use the hollow centres of correctly installed CM Brick Plugs so no uncontrolled penetration is drilled through the waterproofing. Screw length must be calculated carefully because the plugs accept approximately 30mm of screw, and overlong fasteners can loosen the plug or puncture the sheet. If a direct wet-applied finish is required, specify a suitable meshed cavity-drain membrane rather than modifying CM3 on site.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM3 be used on vaulted ceilings or soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 can be used on suitable arched or vaulted ceilings where the membrane follows a dependable fall to drainage and cannot sag or allow water to pond. Fixings and mitred joints must be sealed using the compatible Wykamol components specified for the detail, and the ceiling membrane must remain continuously connected to the drainage route. Flat below-ground soffits should not be lined with CM3; the Wykamol technical data sheet requires a minimum slope of 10%. Because overhead waterproofing is detail-sensitive, the fixing layout, junctions, end-wall returns and finishes should follow the project-specific design and current Wykamol guidance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What tools and accessories are needed to install Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Typical tools include an SDS hammer drill, suitable 10mm masonry bit, wide-headed hammer or mallet, sharp utility knife, scissors or shears, tape measure, long builder’s level, rotating laser, clean cloths and a roller or firm pressure tool for tapes. A controlled hot-air gun can assist surface drying and tape bonding in cold conditions, but open flames must never be used. System accessories may include CM Brick Plugs, Cob Plugs, 150mm Corner Strip Tape, Membrane Tape, Wykamol Rope, DPC patches, Waterguard, Floor Drain components, jetting eyes, outlets, a sump and pumps. Suitable PPE, lighting, access equipment and dust control are also needed. Confirm all critical components and the installation sequence before cutting or fixing the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Wykamol CM3 require a curing or drying period?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 itself has no curing period because it is a prefabricated HDPE sheet rather than a wet-applied coating. Once its fixings, butt joints, corners, penetrations and drainage connections have been completed, inspected and tested, the specified protective finish can normally proceed. However, preparation materials and other parts of the construction still need proper drying or curing. The product guidance instructs installers to allow new repair work to dry thoroughly before fixing wall membrane. Mortars, renders, screeds, biocides, adhesives and sealants must follow their own instructions. A separate fast-track floor arrangement may permit suitable membrane over walkable green concrete, but this must be distinguished from ordinary wall repairs and coordinated with slab strength, drainage, loading and the selected floor build-up.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main technical specifications of Wykamol CM3?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 is manufactured from high-density polyethylene and has a stated sheet thickness of 0.6mm, unit weight of 0.5kg\/m² and stud height of 3mm. Its stated softening temperature is 126°C, with a working temperature range of -50°C to +80°C. Published tensile strengths are 416N in the machine direction and 488N across the sheet to BS EN 12311-2. Water-vapour resistance is stated as greater than 3020MNs\/g, resistance to static loading exceeds 20kg and compressive strength is 250kN\/m² to BS EN ISO 25619-2. The Declaration of Performance records reaction to fire as Class E to EN 13501-1:2007+A1:2009.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Wykamol CM3 BBA approved and compliant with current standards?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 is covered by BBA Agrément Certificate 18\/5595 for the applications and conditions defined within the certified scope. It is suitable for inclusion in Type C drained-protection systems designed in accordance with BS 8102:2022. Where Grade 3 protection is required and the below-ground wall retains more than 600mm of ground, CM3 should be combined with Type A or Type B waterproofing protection in accordance with the BBA certificate. Certification applies to the specified use of the product and does not make CM3 a standalone waterproofing system; drainage, discharge, detailing, ventilation, installation quality and maintenance remain essential.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How long should Wykamol CM3 Waterproof Membrane last?\u003c\/h3\u003e\n\u003cp\u003eA) Under normal service conditions, BBA Agrément Certificate 18\/5595 states that Wykamol CM3 can provide an effective barrier to salts, liquid water and water vapour for the life of the structure in which it is incorporated. This depends on the membrane being correctly specified, stored, installed and protected, and connected to a functioning waterproofing and drainage system. Joints, penetrations, drainage channels, sumps, pumps, alarms and finishes must be inspected and maintained in accordance with the system design.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What maintenance does a Wykamol CM3 waterproofing system need?\u003c\/h3\u003e\n\u003cp\u003eA) The protected CM3 sheet normally requires little direct routine attention, but its drainage and discharge system must remain accessible and serviceable. Waterguard jetting eyes should be retained so channels can be inspected and flushed if silt, limescale or debris begins to restrict flow. Sumps should be cleaned, pumps and floats operated, non-return valves checked and discharge pipework examined in accordance with the system specification and component instructions. High-water alarms, standby pumps and backup power also need testing where fitted. Maintenance frequency should reflect the site’s groundwater risk, water flow, lime exposure, pump activity, occupancy and warranty conditions. Keep as-built drawings, photographs and no-fix zones so future contractors do not puncture CM3, block drainage or conceal access covers permanently.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Wykamol CM3 Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM3 is not a stand-alone barrier against hydrostatic pressure and requires continuous drainage in earth-retaining applications. Its shallow 3mm cavity can be obstructed by debris, silt, limescale or standing water if preparation and drainage are inadequate. Standard CM3 is non-meshed, so direct plaster or render is unsuitable. Butyl-taped joints need clean, dry surfaces, and all floor penetrations should be avoided wherever possible. Flat soffits require dependable falls, close support and specialist detailing to prevent ponding. The membrane cannot correct structural instability, uncontrolled water entry, dry rot, hazardous contamination or avoidable building defects. It also needs protection from punctures, ultraviolet light, heat and flames and does not remove the need for ventilation and condensation control in occupied rooms.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What practical tips help ensure a reliable Wykamol CM3 installation?\u003c\/h3\u003e\n\u003cp\u003eA) Plan the sheet orientation, plug rows, wall-to-floor connection, Waterguard route, sump, services and final finishes before cutting. Measure gross areas separately from waste and calculate 150mm Corner Strip Tape, plugs and other accessories from the actual layout. Keep the 3mm cavity free of drilling dust, mortar and debris, and use a level frequently so long sheets do not drift or kink around corners. Clean and dry every taped surface, press joints firmly across their full width and use controlled warm air only when necessary. Fix through stud centres, control later screw lengths and mark no-fix zones. Before concealment, inspect all membrane, joints and penetrations, flush drainage, test pumps and alarms, photograph critical details and provide a maintenance schedule.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_CLEAR_MEMBRANE_TECH.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_CLEAR_MEMBRANE_TECH.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM3CLEARTECH_160x160.jpg?v=1709237015\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_BLACK_MEMBRANE_DOP.pdf?v=1679586316\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_BLACK_MEMBRANE_DOP.pdf?v=1679586316\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM3BLACKDOP_160x160.jpg?v=1709237318\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_BLACK_MEMBRANE_BBA.pdf?v=1679586316\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM3_BLACK_MEMBRANE_BBA.pdf?v=1679586316\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM3BLACKBBA_160x160.jpg?v=1709237330\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e","brand":"Wykamol Group","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":31807179096163,"sku":"WYCM32020","price":123.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.0M x (L) 10M (20M²)","offer_id":31807179128931,"sku":"WYCM32020-10","price":84.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm3-waterproof-membrane-3mm-stud-w-2-0m-x-l-20m-40m-basement-membranes-188.webp?v=1786970527"},{"product_id":"wykamol-cm8-cavity-drain-waterproof-membrane-8mm","title":"Wykamol CM8 - Cavity Drain Waterproof Membrane (8mm Stud)","description":"\u003cp\u003eWykamol CM8 Cavity Drain Waterproof Membrane is a high quality 8mm studded cavity drain membrane used for Type C waterproofing and damp proofing applications.\u003c\/p\u003e\n\u003cp\u003eDesigned for use on walls, floors, vaults, tunnels and structures above or below ground level, it creates a controlled cavity between the substrate and the internal finish, allowing moisture and water ingress to be managed as part of a suitable drainage system. Wykamol CM8 is clear for easier positioning and fixing with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-and-seals-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e, and can be cut to size with a sharp blade for practical site installation.\u003c\/p\u003e\n\u003cp\u003eWykamol CM8 Membrane is \u003cstrong\u003eBBA certified \u003c\/strong\u003eunder \u003cstrong\u003eCertificate Number 18\/5595\u003c\/strong\u003e, suitable for delivering a Grade 3 environment to BS 8102:2022 and NHBC Chapter 5.4 when installed as part of a correctly designed Type C cavity drain membrane system, and has a life expectancy equivalent to the design life of the building.\u003c\/p\u003e\n\u003ch5\u003e\u003cspan\u003eDescription\u003c\/span\u003e\u003c\/h5\u003e\n\u003ch2\u003e\u003cstrong\u003e\u003cspan\u003eKey Features of Wykamol CM8 Cavity Drain Waterproof Membrane\u003c\/span\u003e\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cbr\u003e✔️ 8mm studded cavity drain membrane manages dampness, water ingress and salts within Type C waterproofing systems.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Suitable for walls, floors, vaults, tunnels and structures above or below ground level in demanding applications.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Clear membrane allows easier substrate visibility, positioning and fixing with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-and-seals-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ BBA certified for Grade 3 environments to BS 8102:2022 when correctly designed and installed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e✔️ Waterproof, salt inhibiting, root and contaminant resistant, with building life expectancy for long-term damp environments.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003e8mm Cavity Drain Membrane For Type C Waterproofing\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM8 Cavity Drain Waterproof Membrane is a high quality 8mm studded membrane designed for Type C waterproofing and damp proofing applications in both above-ground and below-ground structures. Suitable for walls, floors, vaults, tunnels, basements, cellars and retaining walls, it creates a controlled cavity between the substrate and the internal finish. Rather than attempting to block water directly at the face of the wall or floor, the membrane allows dampness, water ingress and moisture to be managed behind the internal surface as part of a suitable drainage system. This makes Wykamol CM8 a practical and reliable choice for structural waterproofing, remedial damp proofing and refurbishment projects where long-term moisture control is required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eControlled Drainage For Damp, Wet And Salt-Contaminated Structures\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eThe 8mm stud profile forms a defined drainage cavity between the existing structure and the new internal finish, helping to isolate damp or contaminated masonry from usable internal spaces. Within a correctly designed Type C cavity drain membrane system, moisture and water ingress can be directed towards a suitable drainage outlet, perimeter channel, sump and pump arrangement where required. Wykamol CM8 is particularly useful in areas affected by dampness, water ingress or salt contamination, including underground rooms, damp walls, vaulted spaces and cellar conversions. By managing moisture behind the membrane rather than trapping it within the wall build-up, it helps support a more dependable internal waterproofing strategy.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eClear Membrane Design For Practical Site Positioning\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM8 is manufactured as a clear membrane, helping installers view the substrate behind the sheet for easier positioning, setting out and fixing. This is especially useful when locating fixing points with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-and-seals-cavity-drain-membrane-fixing\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e, as the clear format allows the background to remain visible during installation planning. The membrane can also be trimmed to suit practical site details, including wall and floor junctions, reveals, corners, pipework, service penetrations and irregular structural areas. Because it is not a wet-applied coating and does not rely on a curing process, it can help reduce delays commonly associated with traditional tanking methods and other liquid-applied waterproofing systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eDurable Protection Against Water, Salts And Contaminants\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM8 Cavity Drain Waterproof Membrane is waterproof, salt inhibiting, root resistant and contaminant resistant, making it suitable for demanding environments where masonry may contain residual moisture, hygroscopic salts or ground-related contaminants. Its performance characteristics make it well suited to older properties, below-ground structures and refurbishment projects where the condition of the existing substrate may vary. Compared with many direct-applied waterproofing systems, it requires minimal preparation and can help reduce the need for aggressive surface removal. This is particularly beneficial where excessive preparation could disturb fragile masonry, historic substrates or existing structural surfaces that need to be preserved wherever possible.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003cspan style=\"color: rgb(88, 88, 88);\"\u003eBBA Certified Waterproofing For Grade 3 Environments\u003c\/span\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM8 is BBA certified under Certificate Number 18\/5595 and is suitable for use within systems designed to deliver a Grade 3 internal environment to BS 8102:2022 and NHBC Chapter 5.4. Grade 3 is generally required for dry habitable below-ground spaces, making the membrane suitable for basement conversions, cellar upgrades and waterproofing specifications where internal areas are being converted into usable living or working spaces. When used as part of a correctly designed and installed Type C cavity drain membrane system, Wykamol CM8 has a life expectancy equivalent to the design life of the building, supporting long-term structural waterproofing performance.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cdiv class=\"iframe-container\"\u003e\u003ciframe title=\"YouTube video player\" src=\"https:\/\/www.youtube.com\/embed\/dTPiS-sw5Dg\" height=\"315\" width=\"560\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Benefits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e8mm Cavity Drainage Capacity: \u003c\/strong\u003eThe 8mm stud profile creates a defined cavity between the membrane and the substrate, allowing water ingress and moisture to be managed behind the internal finish. This makes it suitable for Type C waterproofing systems where controlled drainage is required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSuitable For Type C Waterproofing Systems:\u003c\/strong\u003e Wykamol CM8 is designed for use as part of a drained protection system in line with BS 8102:2022. When specified with suitable drainage, inspection access and pumping where required, it can help create a dry internal environment in below-ground structures.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSupports Grade 3 Environments: \u003c\/strong\u003eWhen installed as part of a correctly designed cavity drain membrane system, Wykamol CM8 can contribute to a Grade 3 internal environment under BS 8102:2022 and NHBC Chapter 5.4. This is the level normally required for habitable spaces where dampness should not be present.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certified System Component:\u003c\/strong\u003e Wykamol CM8 is covered by BBA Certificate Number 18\/5595, giving specifiers, contractors and property owners independent certification for its use within defined waterproofing applications. This supports confidence in its suitability for professional basement waterproofing and structural waterproofing projects.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLong-Term Building Protection:\u003c\/strong\u003e The membrane has a life expectancy equivalent to the design life of the building when installed correctly as part of the appropriate system. This makes it suitable for long-term waterproofing specifications rather than temporary damp control measures.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWaterproof And Salt Inhibiting: \u003c\/strong\u003eWykamol CM8 helps isolate internal finishes from damp, salt-contaminated or moisture-affected substrates. This can reduce the risk of salts migrating through to plaster, plasterboard, flooring or decorative finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRoot And Contaminant Resistant: \u003c\/strong\u003eThe membrane provides resistance against roots and contaminants, making it suitable for below-ground environments where the structure may be exposed to ground moisture, soil-related contaminants or aggressive conditions.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMinimal Surface Preparation Required: \u003c\/strong\u003eUnlike many direct-applied waterproofing coatings, Wykamol CM8 does not require extensive or damaging preparation to the wall surface. Loose material and unsuitable backgrounds must still be addressed, but the membrane system can often be installed with less disruption to the existing structure.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eQuick Installation With No Drying Process: \u003c\/strong\u003eWykamol CM8 is mechanically fixed and does not need to cure or dry before the next stage of work can begin. This can reduce programme time on basement conversions, damp proofing works and refurbishment projects.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eClear Membrane For Easier Fixing: \u003c\/strong\u003eThe clear material allows installers to see the background during fitting, helping with alignment, plug positioning and accurate installation using Wykamol CM Brick Plugs.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEasy Cutting And Detailing:\u003c\/strong\u003e The membrane can be cut with a sharp blade, making it practical to trim around corners, reveals, pipework, protrusions and other site details without specialist cutting equipment.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eLow And High Temperature Tolerance:\u003c\/strong\u003e Wykamol CM8 is designed to tolerate a range of site and service temperatures, supporting use in varied internal and below-ground environments where temperature conditions may fluctuate.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTypical Applications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBasement Waterproofing: \u003c\/strong\u003eWykamol CM8 is suitable for basement waterproofing systems where earth-retained walls and floors are affected by dampness or water ingress. It allows moisture to be managed behind the membrane and directed to a suitable drainage system.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCellar Conversions: \u003c\/strong\u003eThe membrane is commonly used when converting damp or unused cellars into dry, usable internal spaces. When combined with suitable drainage and ventilation, it can help create conditions suitable for storage, utility use or habitable rooms.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRetaining Walls: \u003c\/strong\u003eWykamol CM8 can be installed to below-ground retaining walls where moisture, salts or water ingress are present. It separates the internal finish from the damp structure while allowing water to move within the cavity.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eFloor Waterproofing: \u003c\/strong\u003eSuitable for floor applications as part of a Type C waterproofing system, where the membrane helps manage water beneath the internal floor build-up and direct it towards the designed drainage route.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eVaults And Tunnels: \u003c\/strong\u003eThe 8mm studded membrane can be used in vaults, tunnels and other below-ground structures where water management, moisture control and long-term internal protection are required.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAbove-Ground Damp Proofing:\u003c\/strong\u003e Wykamol CM8 may also be used in above-ground damp proofing applications where internal walls are affected by penetrating damp, residual moisture, salt contamination or defective existing finishes.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBelow-Ground Waterproofing Applications: \u003c\/strong\u003eSuitable for waterproofing areas below ground level where the structure is at risk of water ingress and requires a managed cavity drain membrane system rather than a simple surface coating.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eRefurbishment Of Damp Properties:\u003c\/strong\u003e Useful in renovation projects where existing walls or floors are damp, contaminated or difficult to prepare for traditional finishes. The membrane helps isolate the new internal build-up from the affected substrate.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDomestic And Commercial Waterproofing Projects:\u003c\/strong\u003e Suitable for use in residential basements, commercial basements, plant rooms, storage areas, underground corridors and other structures where water ingress needs to be managed.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAreas Requiring Minimal Structural Disturbance:\u003c\/strong\u003e Wykamol CM8 is useful where damage to the existing structure needs to be kept to a minimum, especially in older buildings where aggressive surface preparation may not be desirable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eStandards \u0026amp; Certificates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBBA Certificate Number 18\/5595: \u003c\/strong\u003eWykamol CM8 is BBA certified under Certificate Number 18\/5595. BBA certification provides independent assessment of the product for its intended waterproofing use, helping specifiers, installers and building professionals confirm that the membrane has recognised third-party approval when used in accordance with the relevant system guidance.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Type C Waterproofing: \u003c\/strong\u003eWykamol CM8 is suitable for use as part of a Type C cavity drain membrane system in line with BS 8102:2022, the British Standard for protection of below-ground structures against water ingress. Type C systems manage water through drainage and removal rather than relying solely on resistance at the structure face.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBS 8102:2022 Grade 3 Environment: \u003c\/strong\u003eWhen correctly specified, installed and combined with suitable drainage, inspection access and pumping where necessary, Wykamol CM8 can help deliver a Grade 3 environment. Grade 3 is normally required for habitable below-ground spaces where no water penetration or dampness is acceptable.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNHBC Chapter 5.4: \u003c\/strong\u003eWykamol CM8 is suitable for systems designed in accordance with NHBC Chapter 5.4, which relates to waterproofing and protection of below-ground structures in new housing and similar construction. This is important where the waterproofing design must satisfy recognised building warranty expectations.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDesign Life Of The Building: \u003c\/strong\u003eThe membrane has a life expectancy equivalent to the design life of the building when installed as part of the correct waterproofing system. This means it is intended as a long-term structural waterproofing component, not a short-term remedial barrier.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProduct Performance\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 performs by creating an 8mm cavity between the damp or water-bearing substrate and the new internal finish. This cavity allows water ingress to be managed and moved towards an appropriate drainage point, rather than becoming trapped behind plaster, plasterboard, screed or floor finishes. This is the central benefit of a Type C cavity drain membrane system, especially in below-ground structures where groundwater levels and water pressure can vary over time.\u003c\/p\u003e\n\u003cp\u003eThe 8mm stud height gives Wykamol CM8 a strong balance between drainage capacity and practical wall or floor build-up depth. It provides more drainage space than low-profile damp proof membranes, making it suitable for structural waterproofing applications, while still allowing the system to be incorporated into domestic and commercial refurbishment projects without excessive loss of internal space. This makes it a practical choice for basement waterproofing, cellar conversions, retaining walls and floor waterproofing.\u003c\/p\u003e\n\u003cp\u003eThe membrane’s waterproof, salt inhibiting, root resistant and contaminant resistant properties support long-term performance in challenging substrates. Damp masonry and below-ground structures often contain salts and contaminants that can damage direct finishes, but Wykamol CM8 helps separate the finish from the affected structure. This can reduce the risk of blistering, staining, salt migration and damp-related deterioration of internal finishes when the system is detailed and drained correctly.\u003c\/p\u003e\n\u003cp\u003eInstallation performance is also a major advantage. Wykamol CM8 can be installed with minimal wall preparation, cut easily with a sharp blade and fixed using suitable Wykamol plugs. As the membrane does not need to dry or cure, follow-on works can proceed more quickly than with many wet-applied tanking materials. Redecoration or finishing can take place sooner once the full system and finishes are complete, helping reduce downtime on refurbishment and conversion projects.\u003c\/p\u003e\n\u003cp\u003eFor the end user, the main benefit is the ability to convert damp or wet areas into dry, usable spaces when the product is used as part of a correctly designed waterproofing system. The BBA certification, compatibility with BS 8102:2022 Type C design principles and suitability for Grade 3 environments give Wykamol CM8 strong supporting credentials for professional waterproofing specifications. Its long design life, resistance to damp-related contaminants and practical installation characteristics make it a suitable membrane for both remedial damp proofing and full below-ground waterproofing projects.\u003cbr\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm8-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-wykamol-cm8-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-table th,\n  .pc-wykamol-cm8-table td {\n    border: 5px solid #fff;\n    padding: 8px 12px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm8-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-wykamol-cm8-table .pc-section-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-table .pc-column-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 400;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-table .pc-data-row td {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm8-table td {\n    text-align: left;\n  }\n\n  .pc-wykamol-cm8-table .pc-centre {\n    text-align: center;\n  }\n\n  .pc-wykamol-cm8-table .pc-bold {\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm8-table .pc-spec-cell {\n    text-align: center;\n    vertical-align: middle;\n    font-weight: 700;\n    background: #fff;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-wykamol-cm8-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-wykamol-cm8-table th,\n    .pc-wykamol-cm8-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-wykamol-cm8-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-wykamol-cm8-table .pc-section-title th {\n      font-size: 18px;\n      padding: 9px;\n    }\n\n    .pc-wykamol-cm8-table .pc-column-head th {\n      font-size: 16px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-wykamol-cm8-table-wrap\"\u003e\n\u003ctable class=\"pc-wykamol-cm8-table\" aria-label=\"Wykamol CM8 Waterproof Membrane Technical Data\"\u003e\n\u003ccolgroup\u003e \u003ccol style=\"width: 32%;\"\u003e \u003ccol style=\"width: 24%;\"\u003e \u003ccol style=\"width: 24%;\"\u003e \u003ccol style=\"width: 20%;\"\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\n\u003cth\u003eResult\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eMaterial\u003c\/td\u003e\n\u003ctd\u003eHDPE\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eUnit Weight\u003c\/td\u003e\n\u003ctd\u003e0.5 Kg\/m²\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd\u003e0.45 mm\u003c\/td\u003e\n\u003ctd\u003eEN 149-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eStud Height\u003c\/td\u003e\n\u003ctd\u003e7 mm\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eColour\u003c\/td\u003e\n\u003ctd\u003eClear\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eWater Tightness 60 kPa; 24h\u003c\/td\u003e\n\u003ctd\u003ePass\u003c\/td\u003e\n\u003ctd\u003eEN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd\u003e126°C\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eTensile Strength MD\u003c\/td\u003e\n\u003ctd\u003e416 N\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eTensile Strength CD\u003c\/td\u003e\n\u003ctd\u003e488 N\u003c\/td\u003e\n\u003ctd\u003eBS 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eResistance To Static Loading\u003c\/td\u003e\n\u003ctd\u003e\u0026gt;20 Kg\u003c\/td\u003e\n\u003ctd\u003eBS 12730\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eCompressive Strength 1\u003c\/td\u003e\n\u003ctd\u003e180 kN\/m²\u003c\/td\u003e\n\u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eReaction To Fire\u003c\/td\u003e\n\u003ctd\u003eClass E\u003c\/td\u003e\n\u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd colspan=\"2\"\u003eType Of Application\u003c\/td\u003e\n\u003ctd\u003eType V\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd colspan=\"2\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd\u003eLifetime of Structure\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"4\"\u003eEssential Characteristics\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eEssential Characteristics\u003c\/th\u003e\n\u003cth\u003ePerformance\u003c\/th\u003e\n\u003cth\u003eTest Standard\u003c\/th\u003e\n\u003cth\u003eHarmonised Technical Specification\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eWater Tightness, 60 kPa; 24h\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003ePass\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 1928\u003c\/td\u003e\n\u003ctd class=\"pc-spec-cell\" rowspan=\"10\"\u003eEN 13967: 2012 + A1 : 2017\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eResistance To Tearing\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12310-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eElongation (5%)\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12311-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eCompressive Creep (Resistance To Static Load)\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 13967 Annex B\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eImpact Resistance\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN12691-2 Method A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eDurability Against Ageing\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eDurability Against Chemicals\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN1926 \/ EN 1928\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eFire Resistance\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eE\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 13501-1:2007+A1:2009\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-bold\"\u003eJoint Tensile Shear Resistance\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eEN 12317-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-bold\"\u003eCompressive Strength\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003e180 kN\u003c\/td\u003e\n\u003ctd class=\"pc-bold\"\u003eBS EN ISO 25619-2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003cstrong\u003e\u003c\/strong\u003e\u003cstrong\u003e\u003c\/strong\u003e\n\u003c\/h5\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm8-ancillary-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-wykamol-cm8-ancillary-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.35;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-ancillary-table col:nth-child(1) { width: 26%; }\n  .pc-wykamol-cm8-ancillary-table col:nth-child(2) { width: 74%; }\n\n  .pc-wykamol-cm8-ancillary-table th,\n  .pc-wykamol-cm8-ancillary-table td {\n    border: 5px solid #fff;\n    padding: 9px 12px;\n    vertical-align: top;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 13px 10px;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-section-title th {\n    background: #8f8f8f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 12px;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-column-head th {\n    background: #a6a6a6;\n    color: #111;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 700;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-data-row td {\n    background: #fff;\n    text-align: left;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm8-ancillary-table .pc-product-cell {\n    font-weight: 700;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-wykamol-cm8-ancillary-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-wykamol-cm8-ancillary-table th,\n    .pc-wykamol-cm8-ancillary-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-wykamol-cm8-ancillary-table .pc-main-title th {\n      font-size: 23px;\n      padding: 10px 8px;\n    }\n\n    .pc-wykamol-cm8-ancillary-table .pc-section-title th {\n      font-size: 18px;\n      padding: 10px 9px;\n    }\n\n    .pc-wykamol-cm8-ancillary-table .pc-column-head th {\n      font-size: 18px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\u003cdiv class=\"pc-wykamol-cm8-ancillary-table-wrap\"\u003e\n\u003ctable class=\"pc-wykamol-cm8-ancillary-table\" aria-label=\"Wykamol CM8 Membrane Ancillary Products\"\u003e\n\u003ccolgroup\u003e \u003ccol\u003e \u003ccol\u003e \u003c\/colgroup\u003e\n\u003cthead\u003e\n\u003ctr class=\"pc-main-title\"\u003e\n\u003cth colspan=\"2\"\u003eWykamol CM8 Membrane Ancillary Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eFixing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-and-seals-cavity-drain-membrane-fixing\" target=\"_blank\"\u003eWykamol CM Brick Plugs \u0026amp; Seals\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eSpecialist sealed fixing plugs used to mechanically secure Wykamol CM8 to suitable wall substrates in below-ground waterproofing applications. The attached rubber seal helps maintain a watertight fixing point through the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-without-seals-membrane-fixing\" target=\"_blank\"\u003eWykamol CM Brick Plugs Without Seals\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFixing plugs used where a separate rope seal is required, particularly on overhead, vaulted, curved or shaped details where a standard plug seal may not sit evenly against the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eJointing, Sealing And Detailing Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape-double-sided-butyl\" target=\"_blank\"\u003eWykamol Membrane Sealing Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDouble-sided sealing tape used to seal membrane flanges, sheet overlaps and principal joints between Wykamol CM8 sheets. It helps maintain waterproofing continuity across the membrane installation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-sealing-rope-butyl-membrane-sealing-rope\" target=\"_blank\"\u003eWykamol Sealing Rope\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFlexible butyl sealing rope used for stud-to-stud joints, three-dimensional details, plug sealing, protrusions, vault details and areas where a flanged tape joint is not available.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-corner-strip-tape-butyl-membrane-sealing-tape\" target=\"_blank\"\u003eWykamol Corner Strip Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eWider sealing tape used for over-sealing joints, wall\/floor junctions, repairs, protrusions, corners and more complex detailing. It is particularly useful where a broader surface seal is required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-mesh-tape-plaster-membrane-jointing-tape\" target=\"_blank\"\u003eWykamol Fibre Tape\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eReinforcing tape used where additional detailing support is required around mitred joints, shaped cuts, vault details or other areas where the membrane has been formed around complex junctions.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003eDrainage And Water Management Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-drainage-channel\" target=\"_blank\"\u003eWykamol Waterguard Perimeter Drainage Channel\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePerimeter drainage channel installed at the vulnerable wall\/floor junction to collect water from behind the membrane and direct it towards a sump chamber, outlet or suitable discharge route.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-floor-drain-channel\" target=\"_blank\"\u003eWykamol Floor Drain Channel\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFloor drainage conduit used around the perimeter or as cross-floor drainage where water needs to be managed below the floor build-up and directed towards the designed outlet or sump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\" target=\"_blank\"\u003eWykamol Waterguard Flexible Jetting Eye\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDrainage access and inspection component used to allow cleaning and inspection of the Waterguard channel system. Its flexible upstand can be adjusted to suit the floor build-up or wall port detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-extended-jetting-eye\" target=\"_blank\"\u003eWykamol Extended Jetting Eye\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eExtended drainage access point used to provide inspection and cleaning access over longer channel runs. It is recommended at suitable intervals where the drainage system needs to remain accessible for future maintenance.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-corner-piece\" target=\"_blank\"\u003eWykamol Swept Corners\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePreformed 90° drainage channel corners used within the Waterguard system. The swept profile helps support easier cleaning, jetting and water flow compared with a sharper corner detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-t-piece\" target=\"_blank\"\u003eWykamol T-Pieces\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eConnector pieces used to join Waterguard and Floor Drain sections together, including cross-floor drainage runs or connections taking water into a sump chamber.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eWykamol Universal Channel Outlet\u003c\/td\u003e\n\u003ctd\u003eOutlet used to remove water from Waterguard or Floor Drain channels into a sump chamber. It includes a 100mm outlet for higher water movement or easier sump installation, with an integrated jetting eye detail.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-50mm-channel-end-outlet\" target=\"_blank\"\u003eWykamol 50mm Outlet\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eOutlet used to take water from Waterguard or Floor Drain systems into a sump chamber, or through a wall to a suitable gully on a sloping site.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" target=\"_blank\"\u003eSump Chambers\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eChambers used to collect water from the cavity drain system before it is pumped or discharged to a suitable outlet. They form part of the wider drainage and water management arrangement where natural drainage is not suitable.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" target=\"_blank\"\u003ePumping Equipment\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003ePumping equipment used where water collected by the drainage system needs to be removed mechanically. The pump arrangement must be sized to suit the expected water ingress, pumping head, discharge distance and drainage layout.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eGullies And Waste Pipes\u003c\/td\u003e\n\u003ctd\u003eDrainage connection points that can be used with Wykamol Waterguard or Floor Drain where suitable. They help direct collected water away from the cavity drain system as part of the designed drainage route.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eDischarge Pipes\u003c\/td\u003e\n\u003ctd\u003ePipework used to carry water away from the sump and pump arrangement to the chosen discharge point. Correct discharge design is important where the waterproofed area relies on pumping to remain dry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/high-water-level-alarms-sump\" target=\"_blank\"\u003eHigh Water Level Alarms\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAlarm systems used to warn of high water levels within a sump chamber. They provide additional protection by alerting the user before water levels rise high enough to affect the waterproofed area.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eBattery Back-Up Systems\u003c\/td\u003e\n\u003ctd\u003eBack-up power systems used where the waterproofed area relies on pumps and needs additional protection during a power failure. They should be sized to suit the expected water volume and risk profile of the project.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eMonitoring And Telemetry Systems\u003c\/td\u003e\n\u003ctd\u003eMonitoring systems used where additional pump and drainage oversight is required. They can provide early warning of pump issues, high water levels or maintenance requirements within higher-risk waterproofing designs.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-condensation-strip\" target=\"_blank\"\u003eNewton Condensation Strip\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDetail strip that may be considered where deeper floor build-ups prevent the drainage channel from collecting condensation directly from the face of the wall membrane. It helps maintain a condensation gap at the floor edge.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-section-title\"\u003e\n\u003cth colspan=\"2\"\u003ePreparation And Supporting Products\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-column-head\"\u003e\n\u003cth\u003eProduct\u003c\/th\u003e\n\u003cth\u003ePurpose Within The System\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" target=\"_blank\"\u003eWykamol Anti-Lime Sealer\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAnti-lime treatment used on concrete where lime efflorescence, dusting or new concrete could affect the cavity drain system. It helps reduce the risk of lime deposits and fine dust contributing to drainage blockages.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-microtech-masonry-biocide\" target=\"_blank\"\u003eMicrotech Biocide\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eBiocidal treatment used where walls are affected by mould or masonry fungi. It helps prepare contaminated surfaces before the membrane is installed, subject to the correct cleaning and application process.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/ultracure-damp-proof-dpc-cream\" target=\"_blank\"\u003eUltracure Damp Proofing Cream\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDamp proof course product that may be used above ground level where avoidable moisture sources need to be controlled before installing Wykamol CM8. It helps reduce ongoing moisture movement into masonry.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-universal-mortar\" target=\"_blank\"\u003eWykamol Universal Mortar\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eRepair mortar used to make good suitable areas of wall or floor before membrane installation. It helps create a more stable surface where loose, damaged or uneven backgrounds need preparation.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" target=\"_blank\"\u003eRenderproof Waterproofing Additive\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAdditive used within suitable sand and cement repair mixes where areas need to be made good before Wykamol CM8 is installed. New repair work should be allowed to dry thoroughly before fixing the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course-rolls\" target=\"_blank\"\u003eDamp Proof Course (DPC)\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eDPC detail used where waterproofing continuity is required through internal walls, reveals or floor junctions. It can be linked to Wykamol CM8 using Wykamol Membrane Sealing Tape and over-sealed where required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003eWykamol High Load Closed Cell Insulation\u003c\/td\u003e\n\u003ctd\u003eHigh-load insulating drainage spacer used within suitable floor build-ups. Its grooved face supports drainage below the floor finish while helping provide thermal insulation and load-bearing support.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row pc-grey\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003e\u003ca rel=\"noopener\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/newton-fibran-xps-500-c-insulation\" target=\"_blank\"\u003eNewton CDM Fibran XPS 500-C Closed Cell Insulation\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eAlternative high-load thermal spacer referenced for use within suitable basement floor build-ups. It supports insulation, drainage and floor loading where a slotted or grooved spacer layer is required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"pc-data-row\"\u003e\n\u003ctd class=\"pc-product-cell\"\u003ePipe Collar \/ Pipe Sleeve\u003c\/td\u003e\n\u003ctd\u003ePipe sealing accessories used where service penetrations through Wykamol CM8 cannot be avoided. They help create a controlled seal around pipes, ducts, cables or grouped services passing through the membrane.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eHealth \u0026amp; Safety And Installer Competency\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 Cavity Drain Waterproof Membrane should be installed by competent installers who understand damp proofing, basement waterproofing and Type C drained protection systems. Although the membrane is quick to install and can be cut with a sharp blade, its performance depends on correct preparation, secure fixing, sealed joints, suitable drainage, appropriate finishes and ongoing access for maintenance. Wykamol CM8 is designed as part of a Type C cavity drain membrane system, not as a standalone barrier membrane, so the full waterproofing design must be considered before installation begins.\u003c\/p\u003e\n\u003cp\u003eGeneral site precautions should be followed at all times. No specific hazards are expected from Wykamol waterproofing membranes or ancillaries, but care must be taken when using drills, cutting tools, hammers, hot air guns and other site equipment. Particular attention should be paid to basement and cellar work, where access, lighting, ventilation and emergency escape routes may be restricted. Suitable PPE should be worn, including gloves, hard hat, goggles, high visibility clothing and steel toe cap boots.\u003c\/p\u003e\n\u003cp\u003eBefore drilling into any wall, floor, vault or tunnel substrate, the installer should check for hidden services and consider the position of all fixings, joints, drainage channels and future finishes. Drilling should be carried out carefully through the centre of the membrane studs, avoiding excessive masonry dust falling into the cavity behind the membrane. If working at height or on vaulted areas, proper access equipment should be used so the membrane can be fixed accurately and safely.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSystem Design Principles\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 is an 8mm studded cavity drain membrane used for Type C waterproofing, basement waterproofing and damp proofing applications. A Type C system accepts that water may enter the structure and uses an internal cavity, drainage channels, and where required, sump and pump systems to manage and remove that water. The Ultimate Guide describes Type C waterproofing as a water management system using membranes, drainage, pumps and ancillaries, with the internal cavity depressurising and controlling water rather than holding it back under pressure.\u003c\/p\u003e\n\u003cp\u003eThe waterproofing design should be based on BS 8102:2022 and the intended use of the space. For habitable basement rooms, a Grade 3 environment is generally required, meaning the internal space should remain dry and suitable for normal occupation. Wykamol CM8 is described as suitable for Type C waterproofing and delivering a Grade 3 environment to BS 8102:2022 and NHBC Chapter 5.4 when used as part of a correctly designed system.\u003c\/p\u003e\n\u003cp\u003eThe system must be designed so water entering behind the membrane can move freely to Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, a sump chamber, gravity outlet or other safe discharge route. If the drainage cavities become blocked, if too much water enters the structure, or if a pump system fails during a power cut, the performance of a Type C system may be compromised. This is why maintenance access, alarms, battery back-up and drainage capacity should be considered at the design stage, especially for habitable spaces.\u003c\/p\u003e\n\u003cp\u003eWhere the structure is below ground or earth-retaining, the design should also consider whether combined waterproofing protection is required. The Wykamol guide recommends combined protection for drier grades and generally refers to Type A and Type C, or Type B and Type C combinations for Grade 3 environments. Wykamol CM8 can form the internal drained protection element, but the overall specification should reflect the structure, water risk, ground conditions, intended use and warranty requirements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eSuitable Substrates\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 can be installed to walls, floors, vaults, tunnels and structures above or below ground level where a cavity drain membrane system is suitable. Typical substrates include concrete, brickwork, blockwork, masonry, render, screed and similar mineral surfaces, provided they are sound enough to receive mechanical fixings and support the intended finish. The membrane is clear, which helps with positioning and fixing using Wykamol CM Brick Plugs.\u003c\/p\u003e\n\u003cp\u003eFor floor applications in new construction, the concrete slab should be laid in accordance with BS 8204-1:2003+A1:2009 and should achieve a flat surface that does not deviate by more than 5mm from the underside of a 3000mm straight edge. This is important because the floor membrane and drainage system rely on controlled water movement and stable support from the substrate. Uneven floors, hollows, ridges or sharp projections can affect the membrane, floor finish and drainage route.\u003c\/p\u003e\n\u003cp\u003eExisting walls and floors should be assessed before installation. Loose material, unsound plaster, weak render, defective screed, severe depressions, sharp projections and unstable backgrounds should be removed or made good. Wykamol CM8 does not require the same aggressive preparation normally associated with bonded tanking systems, but the surface still needs to be suitable for fixing, jointing and drainage.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003ePreparation Of Walls, Floors And Soffits\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eUnsound plaster, render or screed should be removed before Wykamol CM8 is installed. Surfaces should be made level where required, and floors should be prepared to the required tolerances. Wykamol’s Universal Mortar or a 3:1 sand:cement mix incorporating Renderproof Waterproofing Additive can be used to make good suitable areas, with all new works allowed to dry thoroughly before the membrane is fixed.\u003c\/p\u003e\n\u003cp\u003eWhere walls are affected by mould or masonry fungi, surface contamination should be removed by brushing before applying Microtech Biocide in accordance with the relevant product guidance. If dry rot is present, the wall requires detailed assessment before work proceeds, because dry rot may indicate a more serious moisture and timber decay issue that should not simply be hidden behind a membrane system.\u003c\/p\u003e\n\u003cp\u003eAbove ground level, avoidable sources of moisture should be dealt with at source before installing Wykamol CM8. Where appropriate, a damp proof course such as Ultracure may be used to reduce ongoing moisture movement into the masonry. This helps reduce future damage to masonry, timber and internal finishes, and prevents the membrane system from being used to mask a moisture source that could reasonably be treated first.\u003c\/p\u003e\n\u003cp\u003eConcrete walls and slabs should be treated with Wykamol Anti-Lime Sealer where lime efflorescence, dusting or new concrete could affect the cavity drain system. Wykamol Anti-Lime Sealer is described as a highly penetrative treatment that reacts with hydrated cement and forms a water-repellent surface, helping resist surface water absorption and lime efflorescence. This is important because lime deposits and fine dust can contribute to blockages in perimeter drainage channels over time.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-421_1024x1024.webp?v=1783082714\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eAnti-lime sealer being applied to prepared concrete before installation of Wykamol CM8 Waterproof Membrane.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eTools And Ancillary Products Required\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe typical tools required for installing Wykamol CM8 include an SDS hammer drill, suitable drill bits, rubber mallet or club hammer, sharp utility knife with spare blades, tape measure, long spirit level, clean rags, PPE and suitable access equipment for work at height. A hot air gun may be useful for drying membrane surfaces and assisting tape adhesion in cold or damp conditions. A laser level is useful for setting out long wall runs, checking floor falls and keeping sheets aligned.\u003c\/p\u003e\n\u003cp\u003eThe main Wykamol ancillary products used with Wykamol CM8 include Wykamol CM Brick Plugs \u0026amp; Seals for below-ground waterproofing fixings, Wykamol CM Brick Plugs Without Seals where a separate rope seal is required, Wykamol Membrane Sealing Tape for flanged membrane joints, Wykamol Sealing Rope for stud-to-stud joints and three-dimensional sealing details, Wykamol Corner Strip Tape for wider over-sealing and junction details, Wykamol Anti-Lime Sealer for concrete preparation, Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, Wykamol Waterguard Flexible Jetting Eye, Wykamol Extended Jetting Eye, Wykamol Swept Corners, Wykamol T-Pieces, suitable outlets, sump chambers, pumps, high water level alarms and battery back-up systems. Wykamol CM Brick Plugs with seals are 10mm fixings with a rubber seal attached, reinforced heads and the ability to accept a size 10 screw for battens or framing systems.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 must be installed as part of a drainage-based waterproofing system. The drainage layer behind the membrane needs a clear route to remove water from the structure, otherwise the system cannot perform as intended. Wykamol Waterguard is a PVC drainage conduit designed to control water ingress in below-ground situations and is fitted around the perimeter of the floor at the vulnerable wall\/floor junction. Wykamol Floor Drain is also a PVC conduit for controlling water ingress and can be used around the perimeter or as cross-floor drainage within a managed water removal system.\u003c\/p\u003e\n\u003cp\u003eWaterguard channels are a crucial part of the Wykamol cavity drain membrane system and are laid at wall\/floor junctions to remove water entering the structure. T-Pieces can connect Waterguard and Floor Drain sections together, including cross-floor drainage or connections taking water into a sump chamber. Swept corners are designed to create 90° channel sections that support easier cleaning and jetting, while reducing sharp edges that may inhibit flow or encourage lime build-up.\u003c\/p\u003e\n\u003cp\u003eThe Universal Channel Outlet can remove water from the channel to a sump and includes a 100mm outlet for high water movement or easier installation into a sump chamber. It also includes a jetting eye that can be cut down to suit floor finishes and can be used with both Waterguard and Floor Drain channels. A 50mm outlet can also take water from Waterguard or Floor Drain systems into a sump chamber, or through a wall to a gully on a sloping site.\u003c\/p\u003e\n\u003cp\u003eWykamol Waterguard Flexible Jetting Eye should be treated as a drainage access and inspection component. It is designed to allow cleaning of the channel system and to act as an inspection chamber. Its flexible upstand can be bent to allow the channel to be used in a wall port system, and it allows slabs to be laid while keeping the drainage access point available afterwards. Extended Jetting Eyes are also available and are recommended at 10m to 12m intervals of channel where suitable.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-827_1024x1024.webp?v=1783081838\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eWaterguard Drainage Channel being installed at the wall-floor junction with Wykamol CM8 Membrane, helping manage water ingress within a Type C basement waterproofing system.\u003c\/strong\u003e\u003c\/em\u003e\u003cbr\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 should be installed with the studs facing the wall. This allows the studded profile to create the cavity between the substrate and the membrane, giving water and moisture a route to move towards the drainage system. Fixing is carried out using Wykamol CM Brick Plugs, with sealed plugs used for underground waterproofing applications.\u003c\/p\u003e\n\u003cp\u003ePosition the first sheet of Wykamol CM8 against the wall and align it carefully. The membrane may be installed vertically or horizontally depending on the area, access, handling and jointing arrangement, but the flanges must be planned so water is not directed behind an unsealed edge. Once the sheet is positioned, drill through the centre of a stud into the substrate. The hole should be clean and deep enough to accept the plug. Care should be taken while drilling to prevent excessive masonry dust falling into the membrane cavity.\u003c\/p\u003e\n\u003cp\u003ePlace the selected Wykamol CM Brick Plug into the drilled hole and drive it home with a rubber mallet or club hammer. For below-ground waterproofing applications, the plug should include a rubber seal so the fixing penetration is sealed as it is fixed. Where Wykamol CM Brick Plugs Without Seals are used, the fixing should be sealed with Wykamol Sealing Rope where a watertight fixing is required, particularly on overhead, vaulted or shaped details where a washer may not sit evenly.\u003c\/p\u003e\n\u003cp\u003ePlug fixings should generally be spaced no greater than 600mm apart to keep the membrane tight to the wall. The exact fixing pattern may vary depending on batten layout, board size, substrate condition and site requirements. Where the membrane is supporting battens, dry lining or other finishes, the fixing lines should correspond with the intended support positions.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-601_1024x1024.webp?v=1783081852\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eWykamol CM8 Membrane installed on basement walls, with sealed joints and brick plug fixings creating a controlled cavity to manage moisture and direct water towards the drainage system.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eWall Fixing Centres And Internal Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFixing centres should be selected to suit the internal finish. For stud frame installations, Wykamol CM Brick Plugs should be installed in vertical lines that roughly correspond with stud or batten positions. Battens should be a minimum of 25mm x 38mm and can be fixed to the plugs using No.10 screws, which are 5mm screws. The screw length must be selected carefully so it does not perforate the Wykamol CM8 membrane. If the plugs cannot be installed in a straight line, suitable brackets such as Gyproc brackets can be used to hold battens in place.\u003c\/p\u003e\n\u003cp\u003eOn reasonably flat walls, Wykamol CM Brick Plugs can be used to provide a key for board adhesive in dot-and-dab dry lining. The serrated plug head allows the adhesive dab to be applied directly to the plug head. For below-ground applications, the brick plugs should have rubber seals. A conventional bonding plaster should be used in dabs to a minimum thickness of 8mm, covering at least 50% of the membrane surface area.\u003c\/p\u003e\n\u003cp\u003eWykamol CM8 is not a meshed membrane and should not be treated as a direct plaster or render carrier. Where direct plaster or render is required, a suitable meshed membrane such as Wykamol CM8 Mesh or Wykamol CM3 Mesh should be specified instead. Wykamol CM8 should be finished with a suitable dry lining, battened system, dot-and-dab board system where appropriate, blockwork lining, floor build-up or other protective finish that does not compromise the waterproofing membrane.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-431_1024x1024.webp?v=1783081857\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eJointing And Sealing\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe membrane should be sealed at the flanges using Wykamol Membrane Sealing Tape. The flange is the band along the edge of the sheet where no studs are present, and it is used to form the principal sealed overlap between sheets. On walls, the flanges should run vertically and be positioned in front of the preceding width of membrane. For horizontal joints, the lower sheet should be positioned to the front.\u003c\/p\u003e\n\u003cp\u003eBoth membrane surfaces should be clean and dry before any tape or rope is applied. Wykamol Membrane Sealing Tape should be positioned neatly within the overlap, and the joint should be pressed firmly together along its full length to ensure consistent adhesion. In cold, damp or dusty environments, the surface should be dried and cleaned carefully before sealing. A hot air gun may be used cautiously to remove surface moisture and assist tape adhesion, provided the membrane is not overheated or distorted.\u003c\/p\u003e\n\u003cp\u003eWhere there is, or could be, severe water ingress, joints may be additionally closed off with Wykamol Corner Strip Tape or another suitable over-sealing detail. Stud-to-stud joints should be sealed with Wykamol Sealing Rope, which can be pressed and shaped into the joint to create a watertight butyl seal where a flange joint is not available. Mitred joints, shaped cuts, protrusions and vault details should be sealed carefully using the appropriate combination of Wykamol Membrane Sealing Tape, Wykamol Sealing Rope, Wykamol Corner Strip Tape and Wykamol Fibre Tape where required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFloor Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore Wykamol CM8 is installed to a floor, the slab or screed should be clean, flat, stable and free from oil, debris, loose material and sharp projections. In new construction, the concrete slab should be laid to a flatness tolerance of no more than 5mm deviation from the underside of a 3000mm straight edge. Any holes, severe depressions or rough areas should be filled or levelled, and all repair materials should be allowed to dry before the membrane is laid.\u003c\/p\u003e\n\u003cp\u003eThe membrane should be rolled out with the studs facing down towards the floor. Cut the sheet to fit the room using a sharp blade, allowing neat trimming around walls, columns, drainage channels, sumps and service details. The next sheet should be positioned so that the flanged edge overlaps the previous sheet. The overlap should be sealed with Wykamol Membrane Sealing Tape, with all surfaces cleaned and pressed firmly together to create a continuous waterproof layer.\u003c\/p\u003e\n\u003cp\u003eThe floor membrane should be linked into the Wykamol Waterguard Perimeter Drainage Channel, relevant outlet details, DPC details and any sump or drainage connection as part of the waterproofing design. Wykamol Corner Strip Tape can be used where a wider surface seal is required at the wall\/floor junction or around complex details. Where Newton Condensation Strip is specified, it can be used to create a condensation gap where the floor build-up is too deep for the drainage channel itself to collect condensation from the face of the wall membrane.\u003c\/p\u003e\n\u003cp\u003eFor floor finishes, Wykamol CM8 may be overlaid with suitable closed cell insulation before T\u0026amp;G flooring is installed, with a 10mm expansion joint maintained around the perimeter. Alternatively, a conventional 65mm sand and cement screed can be laid over the membrane. Normal decorative materials can be used once the floor, screed or plaster finishes are dry. Impermeable floor finishes should not be laid until the screed moisture content is below 75% RH.\u003c\/p\u003e\n\u003cp\u003eWhere Wykamol High Load or Newton CDM Fibran XPS 500-C Thermal Spacers are specified as part of the floor design, the system build-up should follow the intended drainage and insulation detail. Both Wykamol High Load and Newton CDM Fibran XPS 500-C are 50mm thermal spacers developed for internal waterproofing systems in basement structures, with grooved drainage channels on one face and shiplap edges to reduce the risk of screed passing through gaps. It has high compressive resistance and long-term compressive creep performance, making it suitable where a high-load insulating drainage layer is needed within the floor build-up.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVaulted Soffit Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 can be used to line vaulted ceilings and arched structures, provided all joints and details are sealed correctly and the membrane is installed so water can drain to the designed collection point. Vaulted areas should be planned carefully before cutting begins, as the membrane must follow the curve of the structure without excessive tension, bridging, creasing or sagging.\u003c\/p\u003e\n\u003cp\u003eThe membrane should be measured, cut and positioned so it can be fixed tightly to the vault. Where standard plug seals do not sit reliably on curved or overhead surfaces, Wykamol CM Brick Plugs Without Seals may be used with Wykamol Sealing Rope to form a compressed butyl seal around the fixing point. Fixings should be installed through the centre of the studs and driven securely into the substrate. Enough fixings should be used to hold the membrane tight to the soffit and prevent sagging.\u003c\/p\u003e\n\u003cp\u003eMitred joints, curved joints and end-wall junctions should be sealed using Wykamol Membrane Sealing Tape, Wykamol Sealing Rope, Wykamol Corner Strip Tape and Wykamol Fibre Tape where appropriate. Where the membrane is cut into shaped sections to follow an arch or return, the cuts should be kept to the minimum required and every cut edge should be sealed. The aim is to maintain a continuous drainage cavity and prevent water tracking through unsealed joints.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-basement-membranes-843_1024x1024.webp?v=1783081833\" alt=\"Wykamol CM8 Cavity Drain Waterproof Membrane (8mm Stud) - Basement Waterproof Membranes\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eTypical vaulted soffit installation showing Wykamol CM8 Waterproof Membrane fixed to a curved vault, with sealed joints, drainage detail and Wykamol WaterGuard channel integration.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eFlat Soffit Restrictions\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eFlat soffits below ground should not be lined with Wykamol CM8 unless the soffit has a minimum slope of 10%. This is because flat soffits can allow water to pond behind the membrane, which may prevent proper drainage and place additional stress on the system.\u003c\/p\u003e\n\u003cp\u003eWhere a soffit is not sufficiently sloped, another waterproofing approach should be considered. Wykamol CM8 should be reserved for vaulted, arched or sloping soffit areas where water can move to the designed drainage route. The membrane should always be fixed tight to the substrate and should not be allowed to sag, as sagging can create pockets where water and debris may collect.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDoor Reveals, Corners And Junction Details\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eInternal and external corners should be formed carefully so the sheet is fixed tight into the angle. The Technical Data Sheet specifically highlights the need to take care when running CM8 around internal and external corners, ensuring the sheet is fixed tight to the angle and produces well-defined edges for subsequent finishes.\u003c\/p\u003e\n\u003cp\u003eAt corners, the membrane should not bridge across the angle or leave an unsupported rounded void. Where the sheet can be folded neatly and fixed tight, it should be held securely with suitable Wykamol CM Brick Plugs. Where cutting is needed to form the detail, the created joints should be sealed with Wykamol Membrane Sealing Tape, Wykamol Sealing Rope or Wykamol Corner Strip Tape depending on the geometry of the joint.\u003c\/p\u003e\n\u003cp\u003eDoor reveals, window reveals, columns, returns and openings should be treated as waterproofing details rather than simple trimming points. The membrane should be lapped, wrapped or cut so the cavity remains continuous and any exposed edge or cut joint is sealed. Where a DPC is taken through an internal wall or reveal, the DPC should be linked to the Wykamol CM8 using Wykamol Membrane Sealing Tape and over-sealed where required.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtrusions Through Wykamol CM8\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003ePipes, cables, ducts, conduits and other protrusions through Wykamol CM8 should be avoided wherever possible. Every penetration creates a potential weak point in the waterproofing system and must therefore be planned and sealed correctly. Where services can be re-routed to avoid penetrating the membrane, that is usually preferable.\u003c\/p\u003e\n\u003cp\u003eWhere a protrusion cannot be avoided, the membrane should be cut neatly around the service, leaving as small and controlled a gap as possible. Wykamol Sealing Rope can be packed around the pipe or service to form a flexible butyl seal, and Wykamol Corner Strip Tape can be used over the surface where a wider sealed detail is required. Where a proprietary pipe collar, sleeve or suitable patch detail is used, it should be fully sealed to both the membrane and the service.\u003c\/p\u003e\n\u003cp\u003eOn floors, protrusions should be treated with particular care because they can allow water to bypass the membrane and enter the internal floor build-up. The area around the service should be sealed with Wykamol Sealing Rope and Wykamol Membrane Sealing Tape, with a patch of membrane or DPC used where necessary. The perimeter of any patch must be sealed fully and checked before screed, insulation or flooring is installed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProtection Of Wykamol CM8 After Installation\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 should be protected from damage after installation. On walls, protection may be provided by stud frame dry lining, dot-and-dab plasterboard where suitable, independent lining systems, timber battens, plasterboard, internal blockwork or other specified finishes. On floors, protection may be provided by closed cell insulation and T\u0026amp;G flooring, a 65mm sand and cement screed, or a suitable floor build-up designed not to puncture the membrane.\u003c\/p\u003e\n\u003cp\u003eFollow-on trades should be made aware that the membrane must not be pierced by screws, nails, fixings, services or later alterations unless the detail has been properly specified and sealed. Screws used into Wykamol CM Brick Plugs should be selected so that they do not pass through the membrane. Heavy tools, sharp materials, site traffic, stored materials and careless cutting should be kept away from the membrane before it is protected.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eVentilation And Humidity Control\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 can help create dry, warm and habitable living space in basements and areas previously affected by chronic dampness, but areas lacking natural ventilation still need suitable condensation control. This is especially important in kitchens, bathrooms, utility spaces and other rooms that generate high moisture levels. Mechanical ventilation is recommended as the most effective method of controlling condensation in these areas.\u003c\/p\u003e\n\u003cp\u003eCondensation should not be confused with water ingress. Wykamol CM8 manages moisture or water entering from the structure behind the membrane, but it does not remove moisture generated inside the room by occupation, cooking, drying clothes, bathing or poor ventilation. The finished space should therefore include a suitable ventilation strategy, heating strategy and humidity control appropriate to the intended use.\u003c\/p\u003e\n\u003cp\u003eWhere condensation may run down the face of the membrane, Newton Condensation Strip may be considered as part of the system detail. It is designed to deal with condensation that may occur on the surface of the waterproofing membrane, particularly where deeper floor build-ups mean the drainage channel cannot collect condensation directly from the wall membrane face.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eInspection Before Finishes\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eBefore the membrane is covered by boards, battens, insulation, screed, T\u0026amp;G flooring or other finishes, the full installation should be inspected. The membrane should be checked for punctures, tears, loose fixings, unsealed joints, damaged studs, poorly formed corners, incomplete drainage connections and unsealed service penetrations. Any fault should be repaired before the membrane is concealed.\u003c\/p\u003e\n\u003cp\u003eAll Wykamol Membrane Sealing Tape joints should be checked for full contact and firm adhesion. Wykamol Sealing Rope should be checked to ensure it is compressed and remains in the correct position. Wykamol Corner Strip Tape should be checked around wall\/floor junctions, corners, protrusions and repairs to confirm that it is fully bonded to clean, dry surfaces.\u003c\/p\u003e\n\u003cp\u003eThe drainage system should also be checked before it becomes inaccessible. Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, outlets, T-Pieces, swept corners, sump connections and Wykamol Waterguard Flexible Jetting Eye positions should be confirmed before finishes are installed. Access points must remain accessible after the floor or wall finish is complete, otherwise future maintenance will be difficult.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cdiv style=\"text-align: start;\"\u003e\u003cimg style=\"float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/Wykamol_CM8_3_1024x1024.png?v=1783085367\"\u003e\u003c\/div\u003e\n\u003ch6 style=\"text-align: center;\"\u003e\n\u003cbr\u003e\u003cem\u003e\u003cstrong\u003eFlexible jetting eye detail within a Wykamol CM8 membrane installation, providing accessible maintenance for the Wykamol WaterGuard drainage channel.\u003c\/strong\u003e\u003c\/em\u003e\n\u003c\/h6\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eRepairs To Wykamol CM8\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eIf Wykamol CM8 is accidentally drilled through the wrong stud, the affected area should be cleaned and dried before repair. The drilled hole can be packed with Wykamol Sealing Rope and then over-sealed with Wykamol Corner Strip Tape to restore the waterproofing detail. A replacement fixing should then be installed through a different stud into sound substrate.\u003c\/p\u003e\n\u003cp\u003eIf the membrane is cut, pierced or torn, the damaged area should be cleaned and dried before sealing. Small cuts can be bridged with Wykamol Corner Strip Tape, ensuring that the tape extends beyond the damaged area and is firmly pressed to the membrane. Ragged tears should be flattened as much as possible before sealing, and loose fragments should not be left where they could interfere with the bond.\u003c\/p\u003e\n\u003cp\u003eFor larger holes or badly damaged areas, a patch of Wykamol CM8 should be cut large enough to cover the damage with a suitable margin. Where the studs interlock neatly, the perimeter can be sealed with Wykamol Membrane Sealing Tape. Where the patch does not sit neatly into the existing stud profile, Wykamol Corner Strip Tape should be used around the perimeter to create a secure face seal. On floor and vault repairs, particular care should be taken because these areas may be more exposed to water movement.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eMaintenance And Future Alterations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 itself requires very little maintenance once installed and protected, but the drainage and pumping system must remain accessible and serviceable. Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, sump chambers, pump units, discharge pipes, alarms and jetting access points should be inspected and maintained by a competent person at suitable intervals.\u003c\/p\u003e\n\u003cp\u003eWykamol Waterguard Flexible Jetting Eye and Extended Jetting Eye components allow access for cleaning and inspection of the channel system. The Extended Jetting Eye is recommended every 10m to 12m of channel where suitable, while the Flexible Jetting Eye can be bent to suit wall port systems and remain accessible after slabs or finishes have been installed.\u003c\/p\u003e\n\u003cp\u003eWhere the waterproofing system relies on a pump, high water level alarms and battery back-up should be considered. Wykamol offers alarms and battery back-up systems that alert homeowners to high water levels in groundwater pump systems and provide power in the event of mains failure. Some systems can also work with telemetry options to notify when a mains failure has occurred or when pump servicing is required.\u003c\/p\u003e\n\u003cp\u003eFuture alterations should be controlled carefully. Shelving, cupboards, new services, flooring alterations, skirting, fixtures or any other later works should not be fixed through Wykamol CM8 unless the fixing method has been assessed and the waterproofing detail can be maintained. Even a small unsealed penetration can compromise the membrane and create a route for water or moisture to bypass the system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eKey Limitations\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 must be used as part of a Type C cavity drain membrane system and should not be relied upon as a standalone hydrostatic barrier. Water collected behind or below the membrane must be safely directed to Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, a sump chamber, gravity outlet or another suitable discharge arrangement.\u003c\/p\u003e\n\u003cp\u003eFlat soffits below ground should not be lined with Wykamol CM8 unless there is a minimum slope of 10%. The membrane must not be allowed to sag, as sagging can create pockets where water may pond.\u003c\/p\u003e\n\u003cp\u003eFor underground waterproofing applications, Wykamol CM Brick Plugs \u0026amp; Seals should be used so fixing points are sealed. Where Wykamol CM Brick Plugs Without Seals are used, such as where a separate butyl rope seal is required, Wykamol Sealing Rope should be applied to create a watertight fixing detail.\u003c\/p\u003e\n\u003cp\u003eWykamol CM8 is not a meshed membrane and is not intended to receive direct plaster or render. Where a direct plaster or render finish is required, a suitable Wykamol meshed membrane should be specified instead.\u003c\/p\u003e\n\u003cp\u003eThe membrane must not be punctured by follow-on works. Screws, fixings, brackets and floor finishes should be selected and installed so they do not pass through the membrane. Any accidental damage should be repaired before the membrane is covered.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eOther Technical Information\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eWykamol CM8 is manufactured from HDPE and has a clear finish. The technical data lists a unit weight of 0.5kg\/m², sheet thickness of 0.45mm and stud height of 7mm. It passes water tightness testing at 60kPa for 24hours to EN 1928. Tensile strength is listed as 416N in the machine direction and 488N in the cross direction to BS 12311-2. Resistance to static loading is greater than 20kg to BS 12730, and compressive strength is listed as 180kN\/m² to BS EN ISO 25619-2.\u003c\/p\u003e\n\u003cp\u003eThe working temperature range is -50°C to +80°C, with a softening temperature of 126°C. Type of application is listed as Type V, and life expectancy is listed as the lifetime of the structure when stored and installed in line with the recommendations. Wykamol CM8 is BBA certified under Certificate Number 18\/5595 and is suitable for Type C waterproofing, Grade 3 environments to BS 8102:2022 and NHBC Chapter 5.4 when used as part of a correctly designed and maintained system.\u003c\/p\u003e\n\u003ch5\u003eFAQ's\u003c\/h5\u003e\n\u003ch3\u003eQ) What is Wykamol CM8 Cavity Drain Waterproof Membrane?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 Cavity Drain Waterproof Membrane is an 8mm studded HDPE membrane used for Type C waterproofing and damp proofing applications. It is designed to manage dampness, water ingress and salt contamination by creating a controlled cavity between the substrate and the internal finish. Rather than acting as a simple barrier coating, Wykamol CM8 allows water or moisture to move behind the membrane and be directed towards a suitable drainage system. It can be used on walls, floors, vaults, tunnels and structures above or below ground level, making it suitable for basement waterproofing, cellar conversions, retaining walls and refurbishment projects.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How does Wykamol CM8 work?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 works by using its 8mm stud profile to form a drainage cavity behind the internal finish. The studs face the wall or floor, creating a space where moisture and water ingress can move freely towards perimeter drainage, floor drainage, a sump chamber, pump or other suitable discharge route. This is the principle behind a Type C cavity drain membrane system. The membrane separates the new internal finish from damp or salt-contaminated masonry while allowing water to be managed in a controlled way. For the system to perform properly, the cavity must remain connected to drainage and the joints, fixings and service details must be sealed correctly.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is Wykamol CM8 used for?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is used for waterproofing and damp proofing walls, floors, vaults, tunnels, basements, cellars, retaining walls and other moisture-affected structures. It is suitable for both above-ground and below-ground applications where dampness, water ingress or salt contamination needs to be managed. In basements and cellars, it forms part of a cavity drain system that directs water to drainage and pumping where required. In refurbishment work, it helps isolate new internal finishes from damp or contaminated substrates. Wykamol CM8 is especially useful where minimal structural disturbance is preferred, because it does not normally require the aggressive preparation associated with some direct-applied waterproofing coatings.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Wykamol CM8 suitable for Type C waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Wykamol CM8 is designed for Type C waterproofing systems, where water is managed through a drained cavity rather than simply blocked at the structure face. In a Type C system, the membrane creates a controlled void behind the internal finish, while drainage channels, outlets, sump chambers and pumps remove water safely from the structure. Wykamol CM8 can be used in systems designed to BS 8102:2022 and NHBC Chapter 5.4, including Grade 3 environments where dry habitable below-ground spaces are required. The membrane itself should not be treated as a standalone hydrostatic barrier, because drainage, inspection access and maintenance are essential parts of the system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used for basement waterproofing?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is well suited to basement waterproofing when it is used as part of a correctly designed cavity drain membrane system. Basements and cellars are often affected by groundwater, damp masonry, salt contamination and water ingress at wall\/floor junctions. Wykamol CM8 helps manage these risks by creating a drainage cavity behind the internal finish, allowing water to be directed towards Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, a sump chamber or another safe discharge route. When specified and installed correctly, it can help create a dry internal environment suitable for storage, utility use or habitable basement rooms.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used above ground?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be used above ground where internal walls are affected by dampness, residual moisture, penetrating damp, salt contamination or defective existing finishes. In above-ground damp proofing applications, it helps isolate new internal finishes from the affected substrate, reducing the risk of moisture and salts damaging plasterboard, plaster, flooring or decorative finishes. However, avoidable sources of moisture should still be dealt with wherever possible before installation. This may include repairing external defects, improving drainage, addressing leaks or installing a suitable damp proof course such as Ultracure where appropriate. The membrane is highly useful, but it should not be used to hide a moisture source that can be corrected.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used on floors?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Wykamol CM8 can be used on floors as part of a Type C waterproofing system. The floor must be clean, stable, level and free from oil, loose material, sharp projections and severe depressions before the membrane is laid. In new construction, the concrete slab should achieve a flat surface with no more than 5mm deviation from the underside of a 3000mm straight edge. Wykamol CM8 is rolled out with the studs facing down, then overlapped and sealed using Wykamol Membrane Sealing Tape. It can be covered with suitable closed cell insulation and tongue-and-groove flooring, or with a conventional 65mm sand and cement screed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used on walls?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be installed on walls affected by dampness, water ingress or salt contamination. It should be fixed with the studs facing the wall so the studded profile creates the drainage cavity behind the membrane. The clear membrane helps installers see the background during positioning, making alignment and fixing easier. It is commonly fixed using Wykamol CM Brick Plugs, with sealed plugs used for underground waterproofing applications. The membrane can be fitted vertically or horizontally depending on the site layout, but joints must be planned and sealed so water can drain correctly. Fixing centres should normally be no greater than 600mm apart on standard walls.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Wykamol CM8 suitable for vaults and tunnels?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be used in vaults, tunnels and arched below-ground structures where a cavity drain system is required to manage water ingress. In vaulted areas, the membrane must be fixed tightly to the curve of the structure so it does not sag or create pockets where water can pond. Joints, mitres, laps and end wall details must be carefully sealed with appropriate Wykamol accessories such as Membrane Sealing Tape, Sealing Rope, Corner Strip Tape and Fibre Tape where required. Vault and tunnel work needs accurate setting out, safe access and careful drainage detailing because water must be able to move behind the membrane towards the designed collection point.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used on flat soffits?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 should not be used on flat below-ground soffits unless the soffit has a minimum slope of 10%. This limitation is important because flat overhead areas can allow water to pond behind the membrane if there is no reliable fall towards drainage. Ponding may overload the detail, contaminate the cavity and compromise the waterproofing system. Where soffit waterproofing is required, Wykamol CM8 is better suited to vaulted, arched or sloping structures where water can drain properly. The membrane must be fixed tight to the substrate and must not sag. If the soffit detail is uncertain, specialist waterproofing advice should be sought before installation.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What substrates can Wykamol CM8 be fixed to?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be installed over concrete, brickwork, blockwork, masonry, render, screed and similar mineral substrates, provided the background is suitable for mechanical fixing and the intended finish. Walls should be sound enough to hold Wykamol CM Brick Plugs securely. Floors should be stable, level and free from sharp projections that could damage the membrane or interfere with the drainage cavity. Loose render, weak plaster, defective screed, crumbling masonry, severe hollows and sharp ridges should be removed or made good before installation. The membrane does not normally need the aggressive preparation required for bonded tanking systems, but the substrate must still be stable, clean and fit for purpose.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What preparation is needed before installing Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Before installing Wykamol CM8, unsuitable finishes such as unsound plaster, weak render, defective screed, loose material and sharp projections should be removed. Surfaces should be levelled where needed using a suitable repair material, such as Wykamol Universal Mortar or a 3:1 sand:cement mix incorporating Renderproof Waterproofing Additive. Mould or masonry fungi should be brushed away and treated with Microtech Biocide, while dry rot should be assessed before the membrane is installed. Above ground, moisture sources should be reduced where possible. On concrete walls or slabs, Wykamol Anti-Lime Sealer may be considered where lime efflorescence, fresh concrete or dusting could affect drainage performance.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Why is Wykamol Anti-Lime Sealer used before Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol Anti-Lime Sealer may be used before Wykamol CM8 on concrete walls and slabs where lime efflorescence, new concrete or surface dusting could affect the cavity drain system. Free lime and fine dust can be drawn from concrete by water movement and may contribute to deposits inside drainage channels over time. This can reduce the long-term efficiency of the drainage system if it is not managed. Wykamol Anti-Lime Sealer is described as a highly penetrative treatment that reacts with hydrated cement and forms a water-repellent surface, helping resist surface water absorption and lime efflorescence. It is a useful preparation step where lime contamination risk is present.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What tools are needed to install Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Typical tools for installing Wykamol CM8 include an SDS hammer drill, suitable drill bits, a rubber mallet or club hammer, sharp utility knife with spare blades, tape measure, long spirit level, clean rags and suitable PPE. Extra lighting is useful in basements and cellars, while a laser level helps keep long sheets, fixing lines and floor details accurate. A hot air gun may be used carefully to dry membrane surfaces and assist tape adhesion in cold or damp conditions. Safe access equipment should be used for high walls, vaults or soffits. The installer should also have the correct Wykamol plugs, tapes, sealing rope and drainage components ready before work begins.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What fixings are used with Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is normally fixed with Wykamol CM Brick Plugs, with Wykamol CM Brick Plugs \u0026amp; Seals used for underground waterproofing applications where fixing penetrations must be sealed. These plugs are 10mm fixings with rubber seals, reinforced heads and the ability to accept a size 10 screw for battens or framing systems. Where Wykamol CM Brick Plugs Without Seals are used, a separate seal may be formed using Wykamol Sealing Rope, especially on vaulted or overhead details where a washer may not seat evenly. Fixings should be installed through the centre of the membrane studs and spaced to suit the wall finish, substrate and project requirements.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How far apart should Wykamol CM8 fixings be?\u003c\/h3\u003e\n\u003cp\u003eA) For standard wall applications, Wykamol CM8 fixings should generally be spaced no more than 600mm apart to keep the membrane tight to the wall. The exact fixing pattern may vary depending on the substrate condition, batten layout, board size, chosen lining system and site conditions. Where a stud frame or battened finish is being used, the fixings should be installed in vertical lines that correspond with the batten or stud positions. This keeps the lining support aligned and reduces the need for additional penetrations. Fixings should be secure, properly seated and installed through suitable areas of the substrate so the membrane remains stable before the final finish is fitted.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are Wykamol CM8 joints sealed?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 joints are normally sealed at the flanges using Wykamol Membrane Sealing Tape. The flange is the flat strip along the sheet edge without studs, allowing two sheets to overlap and form a sealed joint. Both membrane surfaces should be clean and dry before the tape is applied, and the joint should be pressed firmly along its full length. On walls, flanges should run vertically and sit in front of the previous sheet. On horizontal joints, the lower sheet should be positioned to the front. Stud-to-stud joints should be sealed with Wykamol Sealing Rope, while severe water ingress, repairs, corners and awkward details may require Wykamol Corner Strip Tape.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What drainage products are used with Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is commonly used with Wykamol Waterguard Perimeter Drainage Channel, Wykamol Floor Drain Channel, Universal Channel Outlets, 50mm outlets, T-Pieces, swept corners, sump chambers, pumps, alarms and jetting access points. Waterguard is normally positioned at the wall\/floor junction to collect water from behind the wall membrane and direct it towards a sump or outlet. Floor Drain may be used where water needs to be collected across floor areas. T-Pieces connect channel sections, while swept corners improve flow and cleaning access. Wykamol Waterguard Flexible Jetting Eyes and Extended Jetting Eyes allow future inspection and flushing, helping keep the drainage system serviceable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Wykamol CM8 need a sump and pump?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 does not always need a sump and pump, but many basement and below-ground waterproofing systems require one where gravity drainage is not possible. The drainage design must safely remove water collected behind or beneath the membrane. If the site has a suitable gravity outlet, water may be discharged without pumping, subject to correct design. Where water needs to be lifted to a higher discharge point, a sump and pump system is required. Pump capacity, chamber size, discharge pipework, alarms and battery back-up should be selected according to expected water ingress and risk level. Habitable basements often require additional safeguards because pump failure can compromise the dry environment.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What is Wykamol Waterguard Flexible Jetting Eye used for?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol Waterguard Flexible Jetting Eye is used as a drainage access and inspection component within Wykamol Waterguard or Floor Drain systems. It allows the drainage channel to be cleaned, flushed and inspected after the membrane and finishes have been installed. Its flexible upstand can be bent to suit site conditions, including use with wall port systems or where floor slabs and finishes need to be accommodated. This component should remain accessible after the project is complete, because hidden drainage systems need future maintenance access. Extended Jetting Eyes are also available and are recommended at intervals of around 10m to 12m of channel where suitable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be plastered or rendered directly?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is not a meshed membrane and should not be plastered or rendered directly. It does not provide the surface key needed for direct wet finishes, so applying plaster or render straight onto the membrane could result in poor adhesion and finish failure. Where a direct plaster or render finish is required, a suitable meshed Wykamol membrane, such as Wykamol CM8 Mesh or Wykamol CM3 Mesh, should be specified instead. Wykamol CM8 should be finished with suitable protective systems such as dry lining, stud frames, dot-and-dab plasterboard where appropriate, internal blockwork, screed, tongue-and-groove flooring or another specified build-up that protects the membrane.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be used with dot-and-dab plasterboard?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be used with dot-and-dab plasterboard on reasonably flat walls where the specification allows it. The serrated heads of Wykamol CM Brick Plugs provide a key for the board adhesive, allowing bonding plaster dabs to be applied directly to the plug heads. For below-ground applications, plugs with rubber seals should be used. A conventional bonding plaster should be applied in dabs to a minimum thickness of 8mm, covering at least 50% of the membrane surface area. This helps support the board and reduces the risk of hollow or unsupported areas. Dot-and-dab should only be used where the wall condition and waterproofing design make it suitable.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can battens or stud frames be fixed over Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Battens or stud frames can be fixed over Wykamol CM8 using Wykamol CM Brick Plugs, provided the fixing depth is controlled so the membrane is not perforated. Fixings should be set out in vertical lines to match the intended batten or stud positions. Battens should be at least 25mm x 38mm, and they can be fixed into the plug heads using No.10 screws, which are 5mm screws. Screw length must be chosen carefully so it engages the plug without piercing the membrane behind. If plug lines cannot be kept straight because of the substrate or layout, suitable brackets such as Gyproc brackets can be used to hold the battens.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How are pipes and services sealed through Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Pipes, cables, ducts and conduits should be avoided through Wykamol CM8 wherever possible because every penetration creates a potential weak point. Where a service penetration is unavoidable, the membrane should be cut neatly around the pipe or cable, keeping the gap as controlled as possible. Wykamol Sealing Rope can be packed around the service to form a flexible butyl seal, while Wykamol Corner Strip Tape can provide a wider surface seal where required. On floors, the risk is greater because water may be present beneath the membrane, so a carefully sealed patch, pipe collar or sleeve detail may be required. All service details should be checked before finishes are installed.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Can Wykamol CM8 be repaired if damaged?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 can be repaired if it is accidentally drilled, cut, pierced or torn, but repairs should be completed before the membrane is covered. If the wrong stud is drilled, the hole can be cleaned, packed with Wykamol Sealing Rope and over-sealed with Wykamol Corner Strip Tape. Small cuts and tears should be cleaned, dried and bridged with Corner Strip Tape, extending beyond the damaged area and pressed firmly to the membrane. Larger holes may require a patch of Wykamol CM8. If the patch interlocks neatly with the studs, the perimeter can be sealed with Wykamol Membrane Sealing Tape. If not, Corner Strip Tape should bridge the patch perimeter.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What protection does Wykamol CM8 need after installation?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 should be protected after installation by suitable wall or floor finishes. On walls, this may include stud frame dry lining, independent lining systems, dot-and-dab plasterboard where appropriate, timber battens, plasterboard or internal blockwork. On floors, it may be covered with closed cell insulation and tongue-and-groove flooring, a 65mm sand and cement screed or another suitable build-up. The membrane should not be left exposed to impact, cutting, site traffic, open flames, high heat or unnecessary UV exposure. Follow-on trades should be told not to puncture it with screws, nails, services or flooring fixings. Any damage should be repaired before finishes are fitted.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What ventilation is needed with Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Ventilation remains important when Wykamol CM8 is used, especially in basements, cellars, kitchens, bathrooms and utility rooms. The membrane manages moisture and water ingress from the structure, but it does not remove moisture generated inside the room by occupants, cooking, bathing, drying clothes or poor air movement. Without adequate ventilation, condensation may form on cold surfaces and cause mould or damp-looking symptoms even if the waterproofing system is working correctly. Mechanical ventilation is usually the most reliable way to control humidity in below-ground spaces. Where condensation may run down the membrane face, Newton Condensation Strip can be considered as part of the system detail.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Wykamol CM8 need to be inspected before finishes are installed?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Wykamol CM8 should be inspected before it is covered by boards, battens, insulation, screed, flooring or other finishes. The installer should check for punctures, cuts, damaged studs, loose fixings, incomplete seals, poorly formed corners, unsealed service penetrations and loose membrane areas. All Wykamol Membrane Sealing Tape joints should be checked for full adhesion, and Wykamol Sealing Rope details should be confirmed as properly compressed. Wykamol Corner Strip Tape should be checked at repairs, corners, protrusions and wall\/floor junctions. The drainage system, including Waterguard channels, outlets, sump connections and jetting eye positions, should also be checked to make sure future maintenance access remains available.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Is Wykamol CM8 BBA certified?\u003c\/h3\u003e\n\u003cp\u003eA) Yes, Wykamol CM8 is BBA certified under Certificate Number 18\/5595. BBA certification provides independent third-party assessment for the membrane’s intended waterproofing use when installed in accordance with the relevant system guidance. Wykamol CM8 is suitable for Type C waterproofing systems designed in line with BS 8102:2022 and can contribute to a Grade 3 internal environment where the system is correctly designed, installed, drained and maintained. It is also suitable for designs considering NHBC Chapter 5.4. These certifications and standards are important for professional waterproofing specifications, building warranty expectations, basement conversions and projects where the finished space must remain dry and suitable for long-term use.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What technical data applies to Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 is manufactured from HDPE and has a clear finish. The supplied technical data lists a unit weight of 0.5kg\/m², sheet thickness of 0.45mm and stud height of 7mm. It passes water tightness testing at 60kPa for 24hours to EN 1928. Tensile strength is listed as 416N in the machine direction and 488N in the cross direction to BS 12311-2. Resistance to static loading is greater than 20kg to BS 12730, while compressive strength is listed as 180kN\/m² to BS EN ISO 25619-2. The working temperature range is -50°C to +80°C, and the softening temperature is 126°C.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) What are the main limitations of Wykamol CM8?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 should not be treated as a standalone hydrostatic barrier. It must be used as part of a Type C cavity drain membrane system with suitable drainage, discharge, inspection access and maintenance. It should not be used on flat below-ground soffits unless there is a minimum slope of 10%, because water may otherwise pond behind the membrane. Wykamol CM8 is not meshed, so it should not be directly plastered or rendered. Underground fixing points should be sealed using Wykamol CM Brick Plugs \u0026amp; Seals or Wykamol Sealing Rope where appropriate. The membrane must also be protected from punctures, careless follow-on works, unsuitable fixings and unsealed service penetrations.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) How long does Wykamol CM8 last?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 has a life expectancy equivalent to the design life of the building when it is stored, installed and maintained in line with the technical recommendations. Its HDPE construction, waterproof performance, salt-inhibiting qualities, root resistance and contaminant resistance make it suitable for long-term damp proofing and waterproofing applications. However, its durability depends on the complete system being designed and maintained properly. Drainage channels must remain serviceable, pumps must operate correctly where required, and inspection access must stay available. The membrane should also be protected from puncturing, impact, open flame, unsuitable alterations and long-term exposure. As with all Type C systems, long-term performance depends on both the membrane and the drainage system.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003eQ) Does Wykamol CM8 require maintenance?\u003c\/h3\u003e\n\u003cp\u003eA) Wykamol CM8 itself requires very little maintenance once it has been installed and protected, but the wider cavity drain system must be maintained. Wykamol Waterguard Perimeter Drainage Channel, Floor Drain Channel, jetting eyes, sump chambers, pumps, alarms and discharge pipework should be inspected and serviced by a competent person. Maintenance may include flushing drainage channels, checking pump operation, cleaning sump chambers, inspecting discharge pipes and confirming alarms or battery back-up systems are working. Flexible Jetting Eyes and Extended Jetting Eyes should remain accessible so the drainage system can be cleaned and inspected. Where the waterproofed space relies on pumping, maintenance is essential to reduce the risk of system failure.\u003cbr\u003e\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_TECH_f81294e5-7972-4191-9eee-2f9907090836.pdf?v=1709236110\" rel=\"noopener\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_TECH_f81294e5-7972-4191-9eee-2f9907090836.pdf?v=1709236110\" rel=\"noopener\" target=\"_blank\"\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM8_500gsm_TECH_160x160.jpg?v=1709239732\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/NEWTON_CDM_MANUAL.pdf?15075145625578900732\" target=\"_blank\"\u003e\u003cstrong\u003e\u003c\/strong\u003e\u003c\/a\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_DOP.pdf?1510\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_DOP.pdf?1510\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM8_500gsm_DOP_160x160.jpg?v=1576256913\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_DOP.pdf?1510\" target=\"_blank\"\u003e \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch3\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_BBA.pdf?1510\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h3\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_BBA.pdf?1510\" target=\"_blank\"\u003e\u003cimg style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM8_500gsm_BBA_160x160.jpg?v=1576256922\"\u003e\u003c\/a\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_PLAIN_MEMBRANE_BBA.pdf?1510\" target=\"_blank\"\u003e\u003c\/a\u003e\n\u003c\/div\u003e\n\u003cstyle\u003e\n\/* Make the youtube video responsive *\/\n  .iframe-container{\n  position: relative;\n  width: 100%;\n  padding-bottom: 56.25%; \n  height: 0;\n}\n.iframe-container iframe{\n  position: absolute;\n  top:0;\n  left: 0;\n  width: 100%;\n  height: 100%;\n}\n\u003c\/style\u003e","brand":"Wykamol Group","offers":[{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":31807433703523,"sku":"WYCM82020","price":115.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 5M (10M²)","offer_id":31807433736291,"sku":"WYCM82020-05","price":55.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":31807433769059,"sku":"WYCM82020-10","price":82.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm-stud-w-2-07m-x-l-20m-40m-basement-membranes-855.webp?v=1783081802"},{"product_id":"wykamol-cm20-waterproof-membrane","title":"Wykamol CM20 Waterproof Floor Membrane (20mm Stud)","description":"\u003cp\u003e\u003cspan\u003eWykamol CM20 is a High Quality, 20mm Stud, Cavity Drain Basement Waterproofing Floor Membrane made from High Density Polyethylene (HDPE).\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM20 Membrane is used as a high drainage capacity floor membrane and is generally specified where it is anticipated that there may be a risk of severe water penetration.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\"\u003e  Wykamol CM20 Waterproof Floor Membrane is supported by BBA Certification Certificate Number 18\/5595.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eSupplied in \u003cstrong\u003e2.07M x 10M (20M²) Rolls\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003cspan\u003eWykamol CM20 \u003c\/span\u003eCavity Drain Floor Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM20 Membrane\u003c\/span\u003e is a Cavity Drain Waterproofing Membrane made from High Density Polyethylene (HDPE).\u003c\/p\u003e\n\u003cp\u003eWith its 20mm deep stud profile, \u003cspan\u003eWykamol CM20 Membrane\u003c\/span\u003e is used as a high drainage capacity floor membrane and is generally specified where it is anticipated that there may be a risk of severe water penetration.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM20 Membrane is\u003c\/span\u003e suitable for Type C waterproofing while delivering a grade 3 environment to BS8102:2009 and NHBC Chapter 5.4.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM20 Membrane\u003c\/span\u003e has a life expectancy of at least the design life of the building. It is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalies, saline solutions and organic acids, and not affected by minerals and hydro-carbons. It is also impervious to root penetration, is rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003cdiv class=\"iframe-container\"\u003e\u003ciframe width=\"560\" height=\"315\" src=\"https:\/\/www.youtube.com\/embed\/dTPiS-sw5Dg\" title=\"YouTube video player\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen=\"\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch3\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBBA Approved\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePart of a Type C Cavity Drain Membrane System in Line With BS8102:2009\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eGives a High Water Void Volume of 14 Litres\/m²\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuick to Install - Easy to Roll Out Along Floors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCreates a Dry, Habitable Living Space in Areas Previously Suffering From Damp \/ Wet Conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasily Cut Down Using a Sharp Blade\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaterproof, Salt Inhibiting, Root and Contaminate Resistant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLittle or No Damage to the Existing Structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLow and High Temperature Tolerance\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eHigh Grade Material\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Data:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cstyle type=\"text\/css\"\u003e\u003c!--\n.tg  {border-collapse:collapse;border-spacing:0;}\n.tg td{font-family:Arial, sans-serif;font-size:14px;padding:5px 17px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:5px 17px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;border-color:black;}\n.tg .tg-w2ns{font-weight:bold;font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-adon{font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-areh{font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-4mat{background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-nq8p{font-weight:bold;font-size:14px;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-npxk{font-size:14px;font-family:Arial, Helvetica, sans-serif !important;;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:middle}\n.tg .tg-hx3s{font-weight:bold;font-size:14px;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n.tg .tg-ne7e{font-weight:bold;background-color:#ffffff;color:#343434;border-color:#656565;text-align:center;vertical-align:top}\n@media screen and (max-width: 767px) {.tg {width: auto !important;}.tg col {width: auto !important;}.tg-wrap {overflow-x: auto;-webkit-overflow-scrolling: touch;}}\n--\u003e\u003c\/style\u003e\n\u003cdiv class=\"tg-wrap\"\u003e\n\u003ctable class=\"tg\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eMaterial\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003eHigh Density Polyethylene (HDPE)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003eUnit Weight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e\u003cspan style=\"font-weight: inherit; font-style: inherit;\" data-mce-style=\"font-weight: inherit; font-style: inherit;\"\u003e1kg\/m²\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eSheet Thickness\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003e1mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-w2ns\"\u003eStud Height\u003c\/td\u003e\n\u003ctd class=\"tg-adon\"\u003e20mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-nq8p\"\u003eColour\u003c\/td\u003e\n\u003ctd class=\"tg-npxk\"\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eWater Tightness - 60 kPa; 24h (EN 1928)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003ePass\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eWorking Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e-50°C to +80°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eSoftening Temperature\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e126°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eTensile Strength MD (BS 12311-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e416 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eTensile Strength CD (BS 12311-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e488 N\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eResistance to Static Loading (BS 12730)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e\u0026gt;20 Kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eCompressive Strength (BS EN ISO 25619-2)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003e170 kN\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eReaction to Fire (BS EN 13501-1 :2007+A1:2009)\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003eClass E\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-hx3s\"\u003eType of Application\u003c\/td\u003e\n\u003ctd class=\"tg-areh\"\u003eType V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"tg-ne7e\"\u003eLife Expectancy\u003c\/td\u003e\n\u003ctd class=\"tg-4mat\"\u003eLifetime of Structure\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM20 Membrane should only be used on floors. Before the system is installed, the area must be assessed to determine what preparation is required:\u003c\/p\u003e\n\u003cp\u003eAll timber and other organic material must be removed to prevent risk of fungal or bacterial growth behind the System. If evidence of rot exists, this must be dealt with by a specialist contractor prior to installation of the system.\u003c\/p\u003e\n\u003cp\u003eBrush the floor clean and remove any sharp protrusions. Fill all non-structural cracks above 1mm wide, all structural cracks should be repaired or treated.\u003c\/p\u003e\n\u003cp\u003eNew concrete should be treated with \u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e which prevents free lime from the curing concrete being drawn out by ingressing water.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDrainage Requirements\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWhen used in a full or part earth-retaining situation, the membrane system must be drained. To comply with BS 8102:2009, you must assume that the structure will be subjected to water ingress at some time.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eMethods Of Drainage:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe drainage must effectively remove all water from below the membrane and take the water to a point of discharge such as a\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eSump Chamber\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eor a form of safe natural drainage. Standing water can block the membrane with silt or lime scale so it is important for water to flow uninterrupted to the drainage point.\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\"\u003e\u003cspan style=\"text-decoration: underline;\" data-mce-style=\"text-decoration: underline;\"\u003e\u003cstrong\u003eWykamol Waterguard Drainage Channel\u003c\/strong\u003e\u003c\/span\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\"\u003e\u003cstrong\u003eWykamol Waterguard\u003c\/strong\u003e\u003c\/a\u003e is placed at the wall \/ floor junction and collects water from behind the wall membrane and receives water at the wall \/ floor junction. \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\"\u003e\u003cstrong\u003eWykamol Waterguard\u003c\/strong\u003e\u003c\/a\u003e is a designed method of removing water as it can interface with sump chambers, gullies, waste pipes etc.\u003c\/p\u003e\n\u003cp\u003eIt can also be maintainable by inserting\u003cspan\u003e either \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\"\u003e\u003cstrong\u003eFlexible \u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-waterguard-flexible-jetting-eye\"\u003e\u003cstrong\u003eJetting Eyes \u003c\/strong\u003e\u003c\/a\u003eor\u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-extended-jetting-eye\" target=\"_blank\" data-mce-href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-extended-jetting-eye\"\u003e Extended Jetting Eyes\u003c\/a\u003e \u003c\/strong\u003einto the system. \u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eInstallation Method:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eIt is very rare for water to pass through a solid concrete slab or concrete raft, but where the slab or raft is of questionable quality it is possible for water to pass through cracks in a poorly constructed floor. If the quality of the slab is questionable, \u003cspan\u003eWykamol CM20 Membrane\u003c\/span\u003e should be used as the floor membrane.\u003c\/p\u003e\n\u003cp\u003eStarting at one side of the room, unroll the membrane with the studs down and cut to fit the room as one would a carpet. The next membrane width is rolled out so that the flanged edge overlaps onto the edge of the previous roll of membrane. Clean both edges.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Membrane Tape\u003c\/strong\u003e\u003c\/a\u003e is then applied to the high flat area between the first two studs at the edge of the previous roll of membrane with the backing paper still intact.\u003c\/p\u003e\n\u003cp\u003eCheck the two widths for alignment, with the flange covering the backing paper.\u003c\/p\u003e\n\u003cp\u003eStarting from the end of the joint, remove the backing paper and press down on the joint sealing the two sections together. This process is repeated until all areas are covered. Seal the \u003cspan\u003eWykamol CM20 Membrane\u003c\/span\u003e to the up-stand of the perimeter drainage channel (i.e \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Waterguard Channel\u003c\/strong\u003e\u003c\/a\u003e) with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-corner-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Corner Strip Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eWhere the floor membrane is required to be jointed to horizontal DPC’s through internal and external walls, these joints should be sealed with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Membrane Tape\u003c\/strong\u003e\u003c\/a\u003e. Ensure both surfaces are clean and dry before attempting to make these joints.\u003c\/p\u003e\n\u003cp\u003eIf there are any services up through the floor, the membrane can be cut and trimmed around them, and the gap filled and sealed using a high quality \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/soudal-fix-all\" target=\"_blank\"\u003e\u003cstrong\u003eHybrid Polymer Adhesive\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIf necessary, a patch of membrane or plain \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/damp-proof-course\" target=\"_blank\"\u003e\u003cstrong\u003eDPC\u003c\/strong\u003e\u003c\/a\u003e is laid over and sealed to the service with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-rope\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Rope\u003c\/strong\u003e\u003c\/a\u003e, and around its perimeter with \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Membrane Tape\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eIt should be noted that protrusions through the floor slab\/raft should be avoided wherever possible as they create weaknesses that allow unnecessary water ingress.\u003c\/p\u003e\n\u003cp\u003eThe specified floor finish can now be laid directly over the floor membrane, which must not be punctured by any fixings through the floor. When a timber floor finish is preferred you must allow an expansion gap around the wall edge.\u003c\/p\u003e\n\u003cp\u003eSpeak to the supplier of the floor finish to confirm the correct size of this expansion gap.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch4\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_TECH_c1f2d370-1302-4278-9da1-204c1cb60a9b.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_TECH_c1f2d370-1302-4278-9da1-204c1cb60a9b.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM20TECH_160x160.jpg?v=1709236421\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003ch3\u003e\n\u003cstrong\u003e\u003c\/strong\u003e\u003cbr\u003e\n\u003c\/h3\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_DOP.pdf?1517\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_DOP.pdf?1517\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM20_DOP_160x160.jpg?v=1576597362\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_DOP.pdf?1517\" target=\"_blank\"\u003e \u003c\/a\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_BBA.pdf?1517\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM20_FLOOR_MEMBRANE_BBA.pdf?1517\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM20_BBA_160x160.jpg?v=1576597369\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cstyle\u003e\u003c!--\n\/* Make the youtube video responsive *\/\n  .iframe-container{\n  position: relative;\n  width: 100%;\n  padding-bottom: 56.25%; \n  height: 0;\n}\n.iframe-container iframe{\n  position: absolute;\n  top:0;\n  left: 0;\n  width: 100%;\n  height: 100%;\n}\n--\u003e\u003c\/style\u003e","brand":"Wykamol Group","offers":[{"title":"(W) 2.07M x (L) 10M (20M²)","offer_id":31830026518627,"sku":"WYCM2020-10","price":129.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.07M x (L) 20M (40M²)","offer_id":31830026551395,"sku":"WYCM2020","price":210.0,"currency_code":"GBP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm20-waterproof-floor-membrane-20mm-stud-w-2-07m-x-l-10m-20m-basement-membranes-716.webp?v=1780917789"},{"product_id":"wykamol-cm8-mesh-membrane","title":"Wykamol CM8 MESH Waterproof Membrane (8mm Stud)","description":"\u003cp\u003eWykamol CM8 MESH Membrane is a High Quality, 8mm Stud, Basement Waterproofing Tanking Membrane comprising of HDPE Membrane with a strong HDPE mesh on the surface of one side.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eMainly used in Below Ground Applications, Wykamol CM8 MESH Membrane can also be used in Above Ground Damp Proofing Applications.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThe meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/p\u003e\n\u003cp\u003e\u003cimg alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/BBA_LOGO_NEW_icon.jpg?v=1522755769\"\u003e\u003cspan\u003e  Wykamol CM8 MESH Waterproof Membrane is supported by BBA Certification Certificate Number 18\/5595.\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eAvailable in \u003cstrong\u003e(W) 2.0M x (L) 10M (20M²)\u003c\/strong\u003e and \u003cstrong\u003e(W) 2.0M x (L) 20M (4\u003c\/strong\u003e\u003cspan\u003e\u003cstrong\u003e0M²)\u003c\/strong\u003e \u003c\/span\u003eRolls.\u003c\/p\u003e\n\u003ch5\u003eDescription\u003c\/h5\u003e\n\u003ch4\u003e\u003cstrong\u003e\u003cspan\u003eWykamol CM8 MESH \u003c\/span\u003eCavity Drain Membrane\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e is a high quality Cavity Drain Waterproofing Membrane comprising of high density polyethylene membrane with a strong HDPE mesh heat-welded during the manufacturing process to the surface of one side. \u003c\/p\u003e\n\u003cp\u003eThe meshed surface creates a mechanical key to allow the membrane to be plastered, rendered or to receive dot \u0026amp; dab plasterboard.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e is suitable for the waterproofing of earth retained walls and vaulted soffits below ground level (i.e Basements) delivering a grade 3 environment to BS8102:2009 and NHBC Chapter 5.4.\u003c\/p\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e is inert and, therefore, non-polluting to drinking water, highly resistant to water, alkalines, saline solutions and organic acids, and not affected by minerals and hydrocarbons. It is also rot-proof, and resistant to bacteria, fungi and other small organisms.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eBenefits \u0026amp; Features:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003eBBA Approved\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eExtremely Robust Membrane with High Performance Bonded Mesh\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCan be used in Above Ground or Below Ground Applications\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003ePart of a Type C Cavity Drain Membrane System in Line With BS8102:2009 when applying Below Ground.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eWaterproof, Salt Inhibiting, Root and Contaminate Resistant\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eCreates a Dry, Habitable Living Space in Areas Previously Suffering From Damp \/ Wet Conditions\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasily Cut Down Using a Sharp Blade\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eEasy to Fold Around Windows and Doors\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eQuick to Install - Minimal Preparation Needed to Wall Surfaces\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eNo Drying Out Process - Redecoration Can Occur Immediately\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003eLittle or No Damage to the Existing Structure\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eAssociated Products:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-with-seals\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM Brick Plugs\u003c\/strong\u003e\u003c\/a\u003e: The recommended Fixing used to fix the Membrane to the substrate in \u003cstrong\u003eBelow Ground Waterproofing Applications\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-plaster-membrane-plugs\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Ultimate Plaster Plugs\u003c\/strong\u003e\u003c\/a\u003e: The recommended Fixing used to fix the Membrane to the substrate in \u003cstrong\u003eAbove Ground Damp Proofing Applications\u003c\/strong\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-mesh-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Mesh Tape\u003c\/strong\u003e\u003c\/a\u003e: A Sealing \/ Jointing Tape made of a butyl rubber compound with a polypropylene fleece finish. The 'Fleece' surface provides a 'key' for direct plastering and rendering over.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Membrane Tape\u003c\/strong\u003e\u003c\/a\u003e: Provides a double-sided waterproof seal when joining Membranes along the studded flange where they overlap.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-rope\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Rope\u003c\/strong\u003e\u003c\/a\u003e: Used to form a seal around the neck of the Fixing Plug if not using Sealing Washers. Can also be used to patch up any punctures in the membrane.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003eWykamol Anti Lime Sealer\u003c\/a\u003e:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eUsed for the control of primary and secondary efflorescence in concrete mixes. Should be applied to concrete surfaces in basements prior to the installation of a 'Type C' Cavity Drain Membrane System to prevent the ‘leaching’ of free lime from the concrete.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\"\u003eWaterguard Basement Channel\u003c\/a\u003e:\u003cspan\u003e \u003c\/span\u003e\u003c\/strong\u003eA PVC Drainage Channel System which should be fitted around the periphery of an internal floor at the vulnerable wall \/ floor junctions in Basements. Any water entering the building through walls or curved soffits is controlled behind the membrane and enters the channel through before being diverted to a Mechanical (Sump and Pump System) or Natural drainage point.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-sump-pump-system\" target=\"_blank\"\u003e\u003cstrong\u003eBasement Sump \u0026amp; Pump Systems\u003c\/strong\u003e\u003c\/a\u003e: Complete water control systems principally designed for use in below ground structures (basements) to control water ingress.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cstyle\u003e\n  .pc-wykamol-cm8-mesh-table-wrap {\n    width: 100%;\n    max-width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    margin: 24px 0;\n  }\n\n  .pc-wykamol-cm8-mesh-table {\n    width: 100%;\n    min-width: 760px;\n    table-layout: fixed;\n    border-collapse: collapse;\n    font-family: inherit;\n    font-size: 16px;\n    line-height: 1.25;\n    color: #111;\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-mesh-table th,\n  .pc-wykamol-cm8-mesh-table td {\n    border: 5px solid #fff;\n    padding: 8px 12px;\n    vertical-align: middle;\n    font-weight: 400;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-main-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: center;\n    text-transform: uppercase;\n    font-size: 30px;\n    line-height: 1.15;\n    font-weight: 700;\n    letter-spacing: 0.2px;\n    padding: 12px 10px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-section-title th {\n    background: #7f7f7f;\n    color: #fff;\n    text-align: left;\n    font-size: 22px;\n    line-height: 1.2;\n    font-weight: 700;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-column-head th {\n    background: #7f7f7f;\n    color: #fff;\n    font-size: 18px;\n    line-height: 1.2;\n    font-weight: 400;\n    text-align: left;\n    padding: 10px 12px;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-data-row td {\n    background: #fff;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-data-row.pc-grey td {\n    background: #d9d9d9;\n  }\n\n  .pc-wykamol-cm8-mesh-table td {\n    text-align: left;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-bold {\n    font-weight: 700;\n  }\n\n  .pc-wykamol-cm8-mesh-table .pc-spec-cell {\n    text-align: center;\n    vertical-align: middle;\n    font-weight: 700;\n    background: #fff;\n  }\n\n  @media screen and (max-width: 767px) {\n    .pc-wykamol-cm8-mesh-table {\n      font-size: 14px;\n      min-width: 720px;\n    }\n\n    .pc-wykamol-cm8-mesh-table th,\n    .pc-wykamol-cm8-mesh-table td {\n      padding: 7px 9px;\n      border-width: 4px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-main-title th {\n      font-size: 24px;\n      padding: 10px 8px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-section-title th {\n      font-size: 18px;\n      padding: 9px;\n    }\n\n    .pc-wykamol-cm8-mesh-table .pc-column-head th {\n      font-size: 16px;\n      padding: 9px;\n    }\n  }\n\u003c\/style\u003e\n\n\u003cdiv class=\"pc-wykamol-cm8-mesh-table-wrap\"\u003e\n  \u003ctable class=\"pc-wykamol-cm8-mesh-table\" aria-label=\"Wykamol CM8 Mesh Waterproof Membrane Technical Data\"\u003e\n    \u003ccolgroup\u003e\n      \u003ccol style=\"width: 32%;\"\u003e\n      \u003ccol style=\"width: 24%;\"\u003e\n      \u003ccol style=\"width: 24%;\"\u003e\n      \u003ccol style=\"width: 20%;\"\u003e\n    \u003c\/colgroup\u003e\n\n    \u003cthead\u003e\n      \u003ctr class=\"pc-main-title\"\u003e\n        \u003cth colspan=\"4\"\u003eTechnical Data\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-column-head\"\u003e\n        \u003cth colspan=\"2\"\u003eFeatures\u003c\/th\u003e\n        \u003cth\u003eResult\u003c\/th\u003e\n        \u003cth\u003eTest Standard\u003c\/th\u003e\n      \u003c\/tr\u003e\n    \u003c\/thead\u003e\n\n    \u003ctbody\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eMaterial\u003c\/td\u003e\n        \u003ctd\u003eHDPE\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eUnit Weight\u003c\/td\u003e\n        \u003ctd\u003e0.505 Kg\/m²\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eSheet Thickness\u003c\/td\u003e\n        \u003ctd\u003e0.6 mm\u003c\/td\u003e\n        \u003ctd\u003eEN 149-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eStud Height\u003c\/td\u003e\n        \u003ctd\u003e7mm\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eColour\u003c\/td\u003e\n        \u003ctd\u003eClear\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eWater Tightness 60 kPa; 24h\u003c\/td\u003e\n        \u003ctd\u003ePass\u003c\/td\u003e\n        \u003ctd\u003eEN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eWorking Temperature\u003c\/td\u003e\n        \u003ctd\u003e-50°C to +80°C\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eSoftening Temperature\u003c\/td\u003e\n        \u003ctd\u003e126°C\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eTensile Strength MD\u003c\/td\u003e\n        \u003ctd\u003e416 N\u003c\/td\u003e\n        \u003ctd\u003eBS 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eTensile Strength CD\u003c\/td\u003e\n        \u003ctd\u003e488 N\u003c\/td\u003e\n        \u003ctd\u003eBS 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eResistance To Static Loading\u003c\/td\u003e\n        \u003ctd\u003e\u0026gt;20 Kg\u003c\/td\u003e\n        \u003ctd\u003eBS 12730\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eCompressive Strength\u003c\/td\u003e\n        \u003ctd\u003e180 kN\/m²\u003c\/td\u003e\n        \u003ctd\u003eBS EN ISO 25619-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eReaction To Fire\u003c\/td\u003e\n        \u003ctd\u003eClass F\u003c\/td\u003e\n        \u003ctd\u003eBS EN 13501-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd colspan=\"2\"\u003eType Of Application\u003c\/td\u003e\n        \u003ctd\u003eType V\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd colspan=\"2\"\u003eLife Expectancy\u003c\/td\u003e\n        \u003ctd\u003eLifetime of Structure\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr class=\"pc-section-title\"\u003e\n        \u003cth colspan=\"4\"\u003eEssential Characteristics\u003c\/th\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-column-head\"\u003e\n        \u003cth\u003eEssential Characteristics\u003c\/th\u003e\n        \u003cth\u003ePerformance\u003c\/th\u003e\n        \u003cth\u003eTest Standard\u003c\/th\u003e\n        \u003cth\u003eHarmonised Technical Specification\u003c\/th\u003e\n      \u003c\/tr\u003e\n\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eWater Tightness, 60 kPa; 24h\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003ePass\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 1928\u003c\/td\u003e\n        \u003ctd class=\"pc-spec-cell\" rowspan=\"10\"\u003eEN 13967: 2012 + A1 : 2017\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eResistance To Tearing\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12310-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eElongation (5%)\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eMD - npd\u003cbr\u003eCMD - npd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12311-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eCompressive Creep (Resistance To Static Load)\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 13967 Annex B\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eImpact Resistance\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN12691-2 Method A\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eDurability Against Ageing\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 1296 \/ EN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eDurability Against Chemicals\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003enpd\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN1926 \/ EN 1928\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eFire Resistance\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eF\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 13501-1\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eJoint Tensile Shear Resistance\u003c\/td\u003e\n        \u003ctd\u003e\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eEN 12317-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n      \u003ctr class=\"pc-data-row pc-grey\"\u003e\n        \u003ctd class=\"pc-bold\"\u003eCompressive Strength\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003e180 kN\u003c\/td\u003e\n        \u003ctd class=\"pc-bold\"\u003eBS EN ISO 25619-2\u003c\/td\u003e\n      \u003c\/tr\u003e\n    \u003c\/tbody\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003cp\u003e \u003c\/p\u003e\n\u003ch5\u003eInstallation\u003c\/h5\u003e\n\u003ch3\u003e\u003cstrong\u003ePreparation:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eUnsound plaster, render or screed should be removed and surfaces made level. This can be achieved using\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-universal-mortar\" target=\"_blank\"\u003e\u003cstrong\u003eUniversal Mortar\u003c\/strong\u003e\u003c\/a\u003e, or a 3:1 sand:cement mix incorporating \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/waterproofer-render-additive-renderproof\" target=\"_blank\"\u003e\u003cstrong\u003eRenderproof Waterproofing Additive\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003cp\u003eLeave all new works to dry thoroughly before any membranes are fixed.\u003c\/p\u003e\n\u003cp\u003eIn case of walls suffering from mould or masonry fungi, prior to fixing the membrane, remove surface contamination by brushing, then apply a\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/masonry-dry-rot-treatment\" target=\"_blank\"\u003e\u003cstrong\u003eMasonry Biocide\u003c\/strong\u003e\u003c\/a\u003e\u003cspan\u003e \u003c\/span\u003ein line with the relevant Technical Data Sheet\u003c\/p\u003e\n\u003cp\u003eIf Dry Rot (Serpula Lacrymans) is present in the walls, this will require detailed assessment before proceeding.\u003c\/p\u003e\n\u003cp\u003eAbove Ground Level, it is recommended that where possible, all sources of moisture are alleviated at the source using a DPC such as\u003cspan\u003e \u003c\/span\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/dpc-injection-cream-ultracure\" target=\"_blank\"\u003e\u003cstrong\u003eUltracure\u003c\/strong\u003e\u003c\/a\u003e, before applying Wykamol CM8 MESH Membrane. This reduces potential damage to masonry and timber etc.\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003eBelow Ground Level (Basements), we recommend an application of\u003cspan\u003e \u003ca data-mce-fragment=\"1\" href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-anti-lime-sealer\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eWykamol Anti Lime Sealer\u003c\/strong\u003e\u003c\/a\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eto the concrete walls, before an application of CM8 MESH, to prevent lime efflorescence and dusting, which can block \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/collections\/wykamol-waterguard-drainage-channel\" target=\"_blank\"\u003e\u003cstrong\u003ePerimeter Drainage Channels\u003c\/strong\u003e\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eApplication on Walls:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eWykamol CM8 MESH Membrane is fixed with the studs against the wall to create an air \/ depressurisation gap.\u003c\/p\u003e\n\u003cp\u003eThe membrane can be fixed either vertically or horizontally. However as this product is not available in 2.4M height and also due to the heavy weight of the material, most fixing of \u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e will be \u003cstrong\u003eVertical\u003c\/strong\u003e.\u003c\/p\u003e\n\u003cp\u003eWhen making this decision, you will need to take into account the size of the area to be lined, and the height of the walls relative to the width of the membrane.\u003c\/p\u003e\n\u003cp\u003eHorizontal Fixing requires less cuts and jointing but the full roll is very heavy at first. Vertical fixing has much lighter strips to fix, but requires that each of these is taped back together again. You may find that vertical fixing is easier, but requires more \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-membrane-sealing-tape\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Membrane Tape\u003c\/strong\u003e\u003c\/a\u003e for jointing.\u003c\/p\u003e\n\u003cp\u003eThe membrane is fixed to the wall using either \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm-brick-plugs-with-seals\" target=\"_blank\"\u003eWykamol CM Brick Plugs\u003c\/a\u003e \u003c\/strong\u003e(in Below Ground Applications) or \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-plaster-membrane-plugs\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol Ultimate Plaster Plugs\u003c\/strong\u003e\u003c\/a\u003e (in Above Ground Applications).\u003c\/p\u003e\n\u003cp\u003ePlace the membrane in position as level as you can judge by eye. Using the correct size of SDS Drill Bit required for the fixing, drill through the centre of a stud near the top and edge to a depth greater than the fixing.\u003c\/p\u003e\n\u003cp\u003eThe fixing is then hammered into the pre-drilled hole until the plug sits flush in the stud. The rubber washer on the fixings re-seals the hole. Level the membrane using the spirit level or laser level if used, and fix another plug about 2 metres along at the top of the sheet. The membrane will now be hanging level to the wall.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing horizontally, continue fixing every 2 metres until you have reached the end of the roll or you have covered all of the wall(s) to be treated. It is very important to regularly check the level. If the membrane is not level, you may well find that the membrane is kinked and looks unsightly, it will also dive down when fitted around corners.\u003c\/p\u003e\n\u003cp\u003eIf you are fixing Vertically, hang each subsequent sheet by the two fixings as described above. The subsequent sheet is joined by overlapping the edge of one sheet by another underneath by a minimum of 2 studs. Fix Brick Plugs \u0026amp; Seals through the studs as close as possible to the edge of the membrane.\u003c\/p\u003e\n\u003cp\u003eApply \u003cstrong\u003e\u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-mesh-tape\" target=\"_blank\"\u003eWykamol Mesh Tape\u003c\/a\u003e \u003c\/strong\u003ealong the joint with equal overlaps of the tape onto each sheet of membrane and press firmly into place.\u003c\/p\u003e\n\u003cp\u003eApply more pressure with the palm of your hand to further seal the whole of the joint. A Hot Air Gun should be used to help sealing, especially in cold or damp conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eFixing Centres:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFix in a square at 350mm centres, and then fix a plug in the centre of four fixings so it looks like a 5 on a dice.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eAll fixings will then be a maximum of 250mm centres.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eOn very flat walls, the horizontal and vertical centres can be moved out to 400mm so when the centre plug is fixed, the centres are not more than 300mm.\u003c\/p\u003e\n\u003ch5\u003eFinishing\u003c\/h5\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e can be plastered or rendered, or can be plasterboarded using a dab fix.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003ePlasters:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe recommended plaster to be applied to \u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e is Tarmac Whitewall which should be in two coats when applied to Wykamol Mesh Membranes.\u003c\/p\u003e\n\u003cp\u003eThe plasters can accept a finishing 3mm skim coat to finish.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Manufacturers recommended drying times may vary according to atmospheric conditions.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCement Based Renders:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eFor internal cement renders the mix should be six parts clean sharp sand \/ one part lime \/ one part cement. A two-coat application is recommended allowing 7-10 days between coats.\u003c\/p\u003e\n\u003cp\u003eDrying time is important because shrinkage cracks may appear.\u003c\/p\u003e\n\u003cp\u003eA weaker mix of seven or even eight parts sand can be used for the second coat.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eHydraulic Lime Based Mortars:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003ch4\u003e\u003cstrong\u003eFirst Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eUsing a ratio of 1 part Lime to 2½ - 3 parts sharp washed sand with evenly distributed hair throughout the mortar and working to a layer of 10mm thick, push the plaster into and across the pre-wet laths at a 45 degree angle to the lathes.\u003c\/p\u003e\n\u003cp\u003eThe plaster should be correctly cured until hard\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eSecond Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eThe second coat also known as the intermediate or float coat will be applied similar to the first coat only without any hair being added to the mortar.\u003c\/p\u003e\n\u003cp\u003eYou must ensure you wet down the first coat with a fine mist before spreading a 7mm coat, before scratching up and leaving in preparation of the finish coat.\u003c\/p\u003e\n\u003ch4\u003e\u003cstrong\u003eFinish Coat\u003c\/strong\u003e\u003c\/h4\u003e\n\u003cp\u003eFor the final top coat a fine mix of 1 part lime putty to 2 parts well graded super fine sand. Remembering to wet down the surface before application with a fine mist spray.\u003c\/p\u003e\n\u003cp\u003eAllow time for the water to absorb into the plaster then apply a coat of approximately 5mm, then rule off and leave for a couple of hours.\u003c\/p\u003e\n\u003cp\u003eWhen ready, rub up the finish coat using a plastic or wooden trowel to bring back the fat until the required finish has been reached in the case of any light crazing this can be rubbed up and trowelled out.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eGeneral Plastering \u0026amp; Rendering Considerations:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e All plasters and renders etc. must be to a minimum total depth of 15mm.\u003c\/p\u003e\n\u003cp\u003eThe undercoat should be applied with firm pressure to ensure the product is fully pushed behind the mesh so that the studs are fully filled, and to an approximate thickness of 5mm and be well scratched with a wire scratcher.\u003c\/p\u003e\n\u003cp\u003eWhen the scratch coat has set, the floating coat should be applied to a depth of 7mm and lightly scratched to provide a firm key for the final coat, which should be to a minimum thickness of 3mm.\u003c\/p\u003e\n\u003cp\u003eAll plasters and renders should be applied strictly in accordance with the manufacturer’s instructions, and good plastering \/ rendering practice as described in BS5492 and BS5262 Code of Practice.\u003c\/p\u003e\n\u003cp\u003eDo not apply decoration until the plaster or render is thoroughly dry.\u003c\/p\u003e\n\u003cp\u003eIf any special renders or plasters are to be considered, technical advice must be sought from the Company’s technical department.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eCuring:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eNote:\u003c\/strong\u003e Cement and Lime based mortars require curing. Curing is the process of keeping a mortar or render under a specific environmental condition until the chemical set (referred to as hydration) is sufficient to withstand the environment into which the mortar has been placed.\u003c\/p\u003e\n\u003cp\u003eLime binders are generally weaker than cements taking longer to acquire their strength and hardness, leaving them potentially more vulnerable for a longer period than cement equivalents, and curing them once placed is simply regarded as best practice.\u003c\/p\u003e\n\u003cp\u003eGood curing is typically considered to be that of providing a humid environment stimulating full hydration of the lime or cement binders, providing strength development along with other benefits, especially the ability to withstand hairline cracking.\u003c\/p\u003e\n\u003cp\u003eThe most common cause of failure is allowing a mortar \/ render to dry out too quickly, impeding the chemical process for hydration, stressing the mortar resulting in cracking.\u003c\/p\u003e\n\u003cp\u003eStandard practice for protecting cement or lime based renders\/mortars is with wet \/ dampened hessian sheeting draped over the area in relatively close proximity to the render. This should be left in place for at least a week and is a standard requirement that is required in all cases.\u003c\/p\u003e\n\u003cp\u003eDuring the warmer months, the hessian will need to be repeatedly wetted and\/or covered with plastic sheeting to ensure the correct curing environment.\u003c\/p\u003e\n\u003cp\u003eCuring should be of at least 7 days.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eDry Lining:\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003e\u003cspan\u003eWykamol CM8 MESH Membrane\u003c\/span\u003e can be effectively used in conjunction with dry lining by dab fixing the plasterboard using a proprietary dabbing compound.\u003c\/p\u003e\n\u003cp\u003eBe careful when installing laminated or insulated plasterboard, as when they are dot \u0026amp; dabbed to Wykamol Meshed membranes, building regulations require two mechanical fixes to each laminated board. These fixings may breach the membrane which cannot be repaired.\u003c\/p\u003e\n\u003cp\u003eWhere insulation is required to the wall build, we recommend to use a \u003cstrong\u003eNON-MESHED Membrane\u003c\/strong\u003e (such as \u003ca href=\"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm8-waterproof-membrane\" target=\"_blank\"\u003e\u003cstrong\u003eWykamol CM\u003c\/strong\u003e\u003cstrong\u003e8 Membrane\u003c\/strong\u003e\u003c\/a\u003e) and use an independent dry-lining frame.\u003c\/p\u003e\n\u003cp\u003eHouse the insulation within the frame and plasterboard over.\u003c\/p\u003e\n\u003ch5\u003eData Sheets\u003c\/h5\u003e\n\u003ch4\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_TECH_492804b7-9758-413f-a3d6-d77025c2af06.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cstrong\u003eTechnical Data Sheet:\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cp\u003e\u003ca rel=\"noopener\" href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_TECH_492804b7-9758-413f-a3d6-d77025c2af06.pdf?v=1709236110\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOLCM8MESHTECH_160x160.jpg?v=1709238151\" alt=\"\"\u003e\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_DOP.pdf?1523\" target=\"_blank\"\u003e\u003cstrong\u003eDeclaration of Performance (DoP)\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cdiv data-mce-fragment=\"1\" style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_DOP.pdf?1523\" target=\"_blank\"\u003e\u003cimg data-mce-fragment=\"1\" style=\"margin-bottom: 16px; float: none;\" alt=\"\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM8_MESH_DOP_160x160.jpg?v=1576600634\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_DOP.pdf?1523\" target=\"_blank\"\u003e \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e\n\u003ch4\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_BBA_fbab9c76-8ce8-4197-a67a-4c7e1ed042cd.pdf?1523\" target=\"_blank\"\u003e\u003cstrong\u003eBBA Certificate\u003c\/strong\u003e\u003c\/a\u003e\u003c\/h4\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_BBA_fbab9c76-8ce8-4197-a67a-4c7e1ed042cd.pdf?1523\" target=\"_blank\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/WYKAMOL_CM8_MESH_BBA_160x160.jpg?v=1576600642\" alt=\"\" style=\"margin-bottom: 16px; float: none;\"\u003e\u003c\/a\u003e\u003c\/div\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/CM8_MESH_MEMBRANE_BBA_fbab9c76-8ce8-4197-a67a-4c7e1ed042cd.pdf?1523\" target=\"_blank\"\u003e \u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003c\/p\u003e","brand":"Wykamol Group","offers":[{"title":"(W) 2.0M x (L) 20M (40M²)","offer_id":31830272409699,"sku":"WYCM8M2020","price":202.0,"currency_code":"GBP","in_stock":true},{"title":"(W) 2.0M x (L) 10M (20M²)","offer_id":31830272442467,"sku":"WYCM8M2020-10","price":122.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2617\/5036\/files\/wykamol-cm8-mesh-waterproof-membrane-8mm-stud-w-2-0m-x-l-20m-40m-basement-membranes-391.webp?v=1780917812"}],"url":"https:\/\/www.platinumchemicals.co.uk\/collections\/basement-waterproof-membranes.oembed","provider":"Platinum Chemicals","version":"1.0","type":"link"}