{"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","url":"https:\/\/www.platinumchemicals.co.uk\/products\/wykamol-cm8-cavity-drain-waterproof-membrane-8mm","provider":"Platinum Chemicals","version":"1.0","type":"link"}