Isola is the original inventor of studded platon membrane and was founded in 1940.
The Isola Group has since grown to become one of the world leaders in the field of waterproofing Platon® Membranes for the construction industry. Isola has also produced many millions of square metres of membrane products worldwide and through their research and development, continues to be at the cutting edge of innovation and technology in this field.
Platinum Chemicals are a major UK distributor of Isola Platon® Membranes.
Platon® Membranes, together with our extensive range of Structural Waterproofing and Damp Proofing products and Drainage Systems give the specifier and installation contractor the complete basement and above ground waterproofing system that is unique within our construction industry.
Platon® Cavity Drain Membranes (System Platon®) are made of high-density studded polyethylene sheets (HDPE) and Polypropylene (PP), which are impervious to water and are vapour proof. When placed against structures the studs form permanent cavities between the structure and the internal shell. They can be used internally or externally to drain and control water and damp ingress.
'System Platon®' is not a tanking system. The term 'tanking' originates from the industrial process of lining structures with a waterproof material, which were applied either externally (on the positive side) or internally (on the negative side). Tanking materials such as multi-coat renders, cementitious waterproofing slurries, asphalts and liquid applied bitumen coatings, rely on either a mechanical or chemical bond directly on to the substrate and work by holding water back. The majority of these are vapour permeable.
Walls in the majority of circumstances are not engineered to withstand the bending stresses applied when a negative pressure barrier tanking system is used to hold back water pressure. Brick is very strong in compression but weak in tension.
Traditionally in the United Kingdom, cementitious tanking systems are applied to below ground structures, but if the structure is subjected to hydrostatic water pressure, the resulting bending stresses are often far too great for the barrier system to cope with and therefore de-bonding or cracking, resulting in failure, will occur. The installation of Platon® Membrane doesn’t change the status quo and therefore Platon® Cavity Membranes are ideally the most suitable and economical method of providing an effective and long-lasting waterproofing system that is also sympathetic towards building structures. For those seeking maximum assurance ‘System Platon’ is considered to be the most trouble-free.
Platon® Membranes can be used in conjunction with our own Platinum branded range of Fixing Plugs & Sealing Tapes.
Isola | Waterproofing Membranes
Platon® P8 Cavity Drain Membrane is manufactured from high-density polyethylene (HDPE) for use within System Platon®, Isola's internally applied Waterproofing System that includes the Aqua Channel Drainage System and Aqua Pumping Systems.
Platon® P8 impermeable and resistant to the usual chemicals in the building construction. Studs are formed in a regular pattern on the one face of the product. The studs are spaced at approx. 25mm centres in both directions.
Platon® P8 is CE marked in accordance with EN 13967 and EN 13984. A separate declaration gives values for several characteristics.
Platon® P8 membrane is tough but pliable and can be bent round corners and projections without risk of breaking, even in very low temperatures. The product can be easily cut with a knife or scissors.
Platon® P8 is supported by BBA Certification Certificate Number 01/3823.
Available in various Roll sizes ranging from 10M² to 40M².
Platon® Cavity Drain Membrane can be applied to almost all sound building structures below ground, which are affected by dampness or water ingress. However, they are not recommended for installation in the following situations.
Where the Cavity Membrane System cannot be drained, otherwise the system will fail.
Fixed onto internal flat soffits unless the soffit has an existing fall or a fall can be formed at the design stage (in the case of new build construction) or created using sand & cement renders, otherwise water would pond behind the membrane and build up like a balloon. The weight of water would inevitably burst the membrane seals, which are not designed to hold water under pressure.
Under or on top of concrete/stone staircase treads and risers, because of the many convoluting junctions and angle details. In such circumstances, we recommend they be treated independently using an epoxy vapour barrier.
Platon® Cavity Drain Membranes are capable of dealing with (quite) large volumes of water, so ingressing water will not usually require remedial action. But if the flow rate is such that it will be able to carry silts/dissolved lime with it, then this inflow should be stemmed/controlled prior to fitting the membrane. This can be achieved as follows.
If ingressing water is localised then the application of Water-Stop Plugging Compound will often be sufficient.
If ingressing water is more general and cannot be dealt with by localised plugging, consideration should be given to applying a general coat of 3:1 render incorporating an accelerator in the mix.
When water is flowing through concrete or mortar (particularly when it is new) there is a tendency for dissolved lime to be brought into the cavity.
This lime can then come out of solution and block up cavities and drains. If this is a risk, then the source of water ingress needs to be treated in the same way as silt bearing water, as described above.
NB: Regardless of conditions at the time of inspection, BS 8102 says it must be assumed hydrostatic pressure is going to occur at some time during the lifetime of the basement. This means that some form of water removal system must always be fitted with a Platon® Cavity Membrane in below ground structures.
There are two principle forms of drainage, these are natural (gravity) and mechanical (sump & pump) and can be used in conjunction with falls or drainage channels.
However, when assessing the type of drainage facility to be used and because the drainage is the key to the success of the cavity membrane system, it is important to take into consideration the following points.
Where drainage with gravity is feasible within the bounds of the property or at a point of exit from the property, it is most important to establish that the ‘internal drainage’ is in good working order and to question whether the local drains are connected to public drains or a soakaway.
Drains can and do block up or back up causing flooding, including escape of foul waste and pungent smells.
Soakaways can also fill up during periods of heavy rain, which would lead to flooding and failure of the cavity membrane system.
In situations where the Platon® membrane installer finds that the only possibility of draining the cavity membrane is into a foul / soakaway system or his client so instructs, liability for the waterproofing system should therefore be excluded in the event of blockage of the foul pipes or the soakaways filling up. We, and the products Manufacturer, always recommend the inclusion of sump and pumps.
Platinum Chemicals offer an off-the-shelf sump and pump drainage system, ‘The Aqua Pump Range’ and ‘Aqua Pump Pro Range’ which has been specifically designed for the purpose of controlling ground water ingress.
The simple to fit sump pump kit comprises a polyethylene pre-formed sump chamber with a structural lid. The submersible Aqua Pump is controlled by an automatic integral float switch and comes with a non-return valve and a high level water alarm that warns of mechanical or power failure.
However, it would be prudent to install a double pump system ‘The Aqua Pump Plus Kit’ which consists of two pumps in the sump chamber. This secondary pump would provide a back up in case of mechanical failure of the principal pump.
Consideration should also be given to installing a Battery Back-up Pump in case of a power failure and is also available from Platinum Chemicals.
Platinum Chemicals also offer Triton® Aqua Channel, which is a PVC drainage conduit specifically designed for the control of water ingress in below ground situations.
It is fitted around the perimeter of the floor at the vulnerable wall / floor junction and can be used in most waterproofing situations, and is particularly suited for use in conjunction with Platon® Cavity Drain Membrane Systems.
Water entering the building through the walls is controlled behind the Platon® Membrane and diverted to the Aqua Channel at the base of the wall. The water enters the Aqua Channel through pre-drilled drainage holes and must then be diverted to a suitable drainage point, either natural or a sump and mechanical pump. Rodding Eyes can also be incorporated into the Aqua Channel.
It is essential that there are no undulating surfaces or depressions in the floor. In new build or whenever floors are being replaced, the floor slabs can be designed and constructed to falls 2º or 3º towards the water collection facility, i.e. sump chamber.
Where an existing solid floor is to be retained a sand/cement screed can be laid over the entire floor gently sloping towards the sump. In all cases the floor should always be tested by spraying with a hose, to ensure that all water finds its way to the water collection point before laying the cavity membrane.
Note: Wherever possible (head height permitting) we recommend that Platon® P20 be used on floors. This is because the Platon® P20 Membrane has a far greater drainage capacity and significantly reduces the risk of hydrostatic pressure building up within the cavity.
Consideration must be given to the implications of fitting sumps in the ground, e.g. where unstable elements are present, such as chalk or sand.
The installation of a perforated sump chamber could cause washing away and potential undermining. Therefore, in such cases, only sealed sumps should be installed and structurally held in place by concrete etc, with the water collection limited to that entering from the drainage channels.
The final decision on the sump type in cases where ground conditions are unknown should be delayed until excavation is undertaken.
IMPORTANT NOTE: If there is any concern as to whether there is a risk of de watering the ground to a condition whereby the structure as a whole could or may be undermined, then advice should be sought from a chartered engineer.
If the Aqua Channel cannot be formed / inserted into the floor at the wall/floor junction, because there are in-situ reinforcing bars in the slab.
Then either a fall must be created in the floor (as previously described under the heading falls) or a series of small surface channels (cut into the floor like chevrons) must be formed with a fall towards the direction of the sump/water collection chamber.
Plaster that may be affected by being closed in behind the Platon® Cavity Membrane, such as gypsum or lightweight plaster, or where the existing plaster is loose or de-bonding, should be removed from walls / soffits prior to membrane application.
Only where dense and well adhered sand and cement renders are present and where removal may cause unwanted structural damage to substrates can they be left in place.
One of the benefits of using cavity drain membrane is that in general, very little preparation to the substrates is required and although the cavity membrane is flexible and does not need a perfect surface for application, the following points need to be considered.
Unsound materials on the surface like renders or plasters need to be removed. Any organic materials such as wallpaper, timber skirtings, fixing grounds etc need to be removed.
A specialist Timber Treatment contractor should investigate any fungal decay / infestations in timbers. Also timber that is in contact with damp masonry should be removed or physically isolated.
Excessively uneven wall and floor surfaces should be dubbed out/levelled especially if timber battens are to be fixed to support dry lining board. Where a wooden floor finish is required such as T&G flooring grade chipboard, it must also be borne in mind that the membrane will follow the contours of the floor. Therefore to achieve a flat surface, any depressions or undulations must be ironed out to avoid undue movement in the floor finishes.
Substrates must be free of sharp protruding objects and debris etc that can damage the membrane. We would also recommend that where mould, mosses, lichens and algae has affected substrates, a surface sterilisation with TRISOL 23 should be used.
Loose, friable or defective masonry should be repaired to ensure a solid fixing.
New concrete should be treated with Platinum Lime Inhibitor which prevents free lime from the curing concrete being drawn out by ingressing water.
Set out below is a generic method of installation, which can be used to apply Platon® Cavity Drain Membranes continuously between wall and floor.
NB it is assumed by this stage, that the site and design considerations mentioned earlier in this document, have been assessed and the type of drainage facility chosen has been tested.
The installation of Platon® P8 Membrane can be fixed to walls either vertically or horizontally, but when choosing the method of application, consideration should be given to the height of walls in relation to the size of the roll of membrane.
There are fewer joints in horizontal applications but it can be awkward and difficult to manoeuvre the weight of a full roll of membrane. Particularly in situations where the membrane has to be taken in and out of numerous recesses, also around convoluting junctions or were walls are not square.
Vertical application may have more joints and require more Waterseal Tape, but this method is more manageable and much easier to fix.
Platon® P8 Membrane is fixed to walls with Brick Plugs & Sealing Washers. This will form a seal with the membrane when the plug is driven home into the substrate.
If the ceiling height is constant, measure and cut drops of the membrane to completely cover the wall areas to be treated. Place the membrane against the wall as level as possible by eye sight and in the top right or left hand corner (depending on which way around the room the membrane is being taken) drill a hole through the centre of the membrane stud using a 10mm drill bit.
Insert the brick plug and hammer home the plug till it finishes flush with the membrane.
Using a spirit level, level out the membrane and then drill and fix another Brick Plug in the same manner approximately 1.5M along the top of the sheet and along the same line of stud as the first fixing.
Offer up the next length of membrane and position the flange over the studs of the first sheet and fix with two Brick Plugs at high level as previously described.
Continue on in this manner, ensuring the membrane stays as level as possible until all the walls are covered. These independent membrane drops will relax after a while and hang flatter to the wall. The drops are now ready for the next step.
Thoroughly clean the flange and the studs where the seal is to be made, (the best cleaning material is Paper Towel). Any dust or dirt will compromise the integrity of the sealed joint. If the membrane is covered in plaster or brick dust, wash off with clean fresh water only and allow to dry. DO NOT use soap or detergents, as these will leave traces on the membrane, which may affect the seal at a later date or make sealing more difficult.
The separate membrane drops should now be sealed together using Waterseal Tape. Apply the tape to the stud area below, which the flange will cover and press home onto the area between the studs.
Flick over the flange section to cover the tape line, and check for uniformity of cover on tape line. Remove the tape backing paper, starting from the middle section of the wall drop, forming two backing paper tags, one going up and the other down.
On the exposed section of tape apply hand pressure only to the flange to form an initial seal. Carry on to form the seal from the centre section of membrane working up to the top, then go back to the centre and repeat the operation going downwards.
Sealing in this manner will prevent any buckling between the membrane or stress concentration at the joint. In very cold or humid conditions a hot air gun can be used to obtain a good sealed joint.
Now that the membrane is sealed to form one continuous sheet, Brick Plugs can now be fixed through the membrane in position to accommodate the chosen dry lining system.
NOTE: Although a 10mm Drill Bit is the correct size to use, in very soft brickwork this can result in loose fixing. In these circumstances, it is useful to have on hand drill sizes down to 8mm Drill Bit and experiment with different sizes for the best results.
Begin at one side of the room and unroll the Floor Membrane against the Wall Membrane with the studs facing down onto the floor.
Allow for the membrane flange overlap, cut the membrane to the desired length or width of the floor. Repeat this exercise until all the lengths / widths required to cover the floor area have been cut.
Roll out the next length/sheet of membrane and position the flange over the studs of the first sheet laid and thoroughly clean the flange and the studs where the seal is to be made as previously described for wall application.
Apply Waterseal Tape to the stud area below which the flange will cover and press home onto the area between the studs.
Flick over the flange section to cover the tape line, and check for uniformity of cover on tape line. Remove the tape backing paper, starting from the middle section of the membrane sheet, and peel off backing paper in opposite directions along the flange. On the exposed section of tape apply hand pressure only to the flange to form an initial seal. Carry on forming the seal working away from the centre of the membrane.
Foot pressure can be applied by sliding the sole of the foot over the membrane joint, to ensure that the membranes are fully bonded. Sealing in this manner will prevent any buckling between the membrane or stress concentration at the joint.
In very cold or humid conditions a hot air gun can be used to obtain a good sealed joint.
The next stage of the operation is to link the floor membrane to the wall membrane, which can be achieved, using Corner Strip / Overtape. Using the Overtape, work out how many linear metres there are around the walls, the Overtape is supplied in manageable 5M, 10M or 20M Lengths.
The Overtape is folded in half along the length of the piece to be used and positioned with the crease into the angle as described for the wall / floor junction.
Once correctly aligned, carefully pull off the backing paper and press firmly out with the palm of the hand onto the floor and wall membranes.
Platon® P8 should not be fixed to the under side of a flat soffit unless a fall exists or a fall can be created in the soffit itself.
The soffit should first be measured to establish the desired lengths or widths of membrane required to cover the area and then a further 200mm of membrane should be added to the measurements, to allow for the membrane to be lapped down all the peripheral walls.
Apply Waterseal Rope to Brick Plugs, then around the perimeter edges of the membrane, fold the membrane inward 200mm to form a positive creased and create a down lap. Offer the membrane up to the soffit and position the down lap creases into the junction between the soffit and wall.
Drill and fix enough Brick Plugs through the membrane and into the soffit to hold the membrane in place with the studs against the soffit.
NB: Wherever the soffit membrane meets the wall, a 200mm down lap must be allowed and formed as above.
Offer the next length/sheet of membrane up to the soffit and position the flange over the studs of the first sheet, fix and secure the membrane as described above. Repeat this operation until all the membrane sheets are held in place.
Thoroughly clean the flange and the studs where the seal is to be made as previously described for wall application.
Apply Waterseal Tape to the stud area, which the flange will cover and press home onto the area between the studs. The membrane should now be sealed to form one continuous sheet, Brick Plugs can now be fixed through the membrane, in positions to accommodate the chosen dry lining system.
NOTE: It is important to ensure that the membrane is taut against the soffit and doesn’t sag, otherwise water ponding will occur and the membrane/seals could fail.
Internal and external corners are formed in exactly the same way as that which has been previously described in ‘Floor Applications' using Platon® P8 with membrane upstand except in this case, they will be formed in reverse and be upside down.
Where there are services such as pipes, ducting or steel stanchion that protrude through walls or floors, the membrane should be carefully cut and trimmed around the obstacle and sealed using a combination of Waterseal Rope or Newton Mastic and Corner Strip.
Door and Window Frames and timber surrounds should always be removed to enable the Platon® Membrane to be extended around or into door and window reveals to maintain the continuity of the waterproofing system and to also provide a physical barrier between the frames and damp masonry.
In situations where the Platon® Membrane would restrict or limit the profile of replaced frames, then Plain DPC can be used to line and protect the reveals instead.
There is no requirement to ventilate the membrane cavity in a fully sealed system such as in under pavement vault application.
In a semi sealed system, the cavity between membrane and substrate can be vented into the room space with passive vents or if this is not possible, it can be vented through the external wall using a 150 x 225 air brick inserted every 1.5M to 2.0M along the wall.
It is important that the cavity between the membrane and internal finish i.e. dry lining is not vented so as to avoid possible interstitial condensation. However, consideration should be given to the risk of condensation forming within the room itself and the introduction of a humidistat controlled extract fan should therefore be recommended.
Refer to BS8102 (2009) Table 2 for further reference. Part F of Building Regulations concerning ventilation in basements.
If timber battens are to be used, the traditional method is to fix a vertical batten 25mm x 50mm.
The Brick Plugs in this instance should be fixed at 400mm centres horizontally and 600mm centres vertically. Platinum Brick Plugs will take 25mm of screw, so be sure to purchase the correct length for the thickness of batten.
NB: We would however, recommend that foil back plasterboard be used to prevent interstitial condensation forming in the cavity.
For a metal fast track dry lining system such as Gypliner or Lafarge, the brick plugs should be fixed at 600mm centres horizontally and 800mm centres vertically. If an independent timber or metal frame system is to be used, the wall membrane can be ‘curtain hung’. The membrane is simply dressed down the walls just like hanging a curtain or sheet. This method of installation requires less fixings.
NOTE: We would however, recommend that foil back plasterboard be used to prevent interstitial condensation forming in the cavity.
There is a wide choice of floor coverings that can be laid on top of Platon® floor membranes
Domestic: Minimum 50mm screed or 20mm reinforced polymer modified self-levelling screed.
Industrial: Minimum 75mm reinforced screed or 35mm reinforced polymer modified self-levelling screed.
For Platon® Membrane applied to walls at or above ground level, the maximum insulation thickness should be 50mm.
When Platon® membrane is applied to earth retaining walls full height of a basement, there is no upper limit to insulation thickness. However, if Platon® Membrane is applied to part earth retaining walls, then the maximum insulation thickness should be 50mm.
There is no upper limit to insulation thickness for Platon® Membrane applied to solid floors at ground or below ground level.
When working in a conventional vault with rounded ceilings the water can run off freely and the following method should be adopted:
When lining vaults always work from the front to the back, starting on the centre line of the vault. Measure the length of the vault and add 400mm to this measurement, then cut the membrane to the length.
Form a 900 downturn crease 200mm in from either end of the membrane and prepare the Brick Plugs by wrapping with Waterseal Rope.
Offer the membrane up to the vault ceiling along the centre line of the vault, and drill and hammer home the fixing plugs in a straight line at 600mm centres from front to rear. These will provide fixing points for the dry lining system.
The creased downturn at either end of the vault will start to deform going into the curvature of the vault ceiling. Where this occurs, carefully slit / cut the deformed sections towards the crease but stop short of the crease by one stud.
The membrane can now be overlaid and will flatten out and follow the curvature. Several slits may be required to achieve this depending on the radius of the vault.
Continue to work out from the first sheet, ensuring a weathered joint of not less than eight studs. The flange should be used to make both of these weathered joints either side of the initial membrane fixed off the central line of the vault.
The weathered joints are sealed flange over stud using Waterseal Tape.
All the sheets running from front to back of the vault are cut overall length of vaulted soffit. This should give coverage to the vault, past the springing line down to the floor slab line, together with a 200mm return to either end of the vault.
The end walls are now ready to be lined with the membrane. The end wall sections are cut to the true width of the vault so that the membrane overlaps the membrane returns already formed. These sections of membrane are fixed and sealed in exactly the same way as described for wall application. The end wall membrane stud to stud joint should be sealed around the radius with Waterseal Rope and if necessary Corner Strip / Overtape.
The floor membrane is now ready to be laid over the completed drainage system.
Platon P8 is CE marked in accordance with EN 13967 and EN 13984. A separate declaration gives values for several characteristics.
Platon® Plaster Base is a BBA Approved studded Cavity Drain Membrane for use in both Waterproofing and Damp-Proofing specifications.
The unique patented undercut stud is 'dovetail' shaped which provides a physical key for plaster and render or allows for the direct application of plasterboard on adhesive dabs. This is of particular benefit where space constraints prevent the use of timber or metal frame drylining, the installation of a blockwork liner wall or where a direct render or plaster finish is preferred, i.e a vaulted ceiling.
Platon® Plaster Base can be used to deal with and provide isolation from Rising or Penetrating Damp, Salt Contamination and Running Water (when used in conjunction with the Aqua Channel Drainage System, Platon® P20 or Platon® P8 (when P8 is used used as the Floor Membrane) and Triton Aqua Pump & Sump Systems.
When used within a fully designed and specified waterproofing design, Platon® Plaster Base can provide a Grade 3 environment, as laid out in BS8102:2009.
Platon® Plaster Base is for use above or below ground and unlike wet or liquid applied forms of ‘tanking’ it can be worked on immediately after installation without waiting for drying or curing to occur.
Platon® Plaster Base is supported by BBA Certification Certificate Number 01/3823.
Platon® Plaster Base can be applied to retained sound renders, brickwork, blockwork, stone or concrete. The quality and appearance of the applied finishes will be a direct reflection of the underlying substrate.
All surfaces must be of a sound, firm nature and any loose areas should be removed prior to application. Uneven, loose, or soft brick/stonework may need to be dubbed out to level off and stabilise the background. Retaining sound cement render can be a good option if the substrate underneath is known to be in poor condition.
Gypsum based plaster, wallpaper and any buried timber must be removed as these materials can deteriorate over time and in the presence of moisture. Where necessary a fungicide wash should be applied to the wall surface. Platon® Plaster Base should not be used on floors.
Remove loose and soft plaster / render, wallpaper and embedded timbers. Dub out voids, hollows and loose areas of masonry using a cement mortar. Offer up the membrane, hollow studs facing into the room, and fix in place using sealed Plaster Plugs (Sealed using Platinum Waterseal Rope).
Pull the membrane as tightly as possible against the structure to minimise hollow areas behind as these can interfere with the application of plaster or plasterboard.
Use a minimum of 13 fixings per square metre, spaced out in a regular ‘diamond’ pattern no more than 250mm apart. Drill through the membrane in the centre of a 4 stud cluster, rather than through the stud itself. In some cases, additional fixings may be required in order to produce a stable and tight membrane layer.
Fit the membrane tightly into and around corners to avoid damage when applying finishes.
Platon® Plaster Base is joined by overlapping adjacent sheets by a minimum of 2 studs. Fix the Fixing Plugs as close as possible to the edge of the membrane. Fixings should be made at 150mm centres along the joint. Once all fixings are in place, clean the membrane surface thoroughly and ensure it is dry and free from dust.
Apply a Mesh Tape along the joint with equal overlaps onto each sheet of membrane and press firmly into place. If for some reason the membrane edges are in tension or are likely to try and pull apart, reinforce the joint with Corner Strip before applying the Mesh Tape.
Most common Lightweight and Renovating Plasters (Tarmac Whitewall) or sand / cement renders can be applied to Platon® Plaster Base. (The use of British Gypsum Hardwall or Tuff Coat is not recommended). When using sand / cement renders, mixes of 1 part cement to 6 parts washed plastering sand, incorporating either SBR or Hydrated Lime should be used. NB Grade ‘M’; medium sharp sand should be used. Do not use soft or building sand.
All renders / plasters should be applied in a minimum of two coats, allowing the 1st coat of 7mm - 10mm to be trowelled firmly into the membrane studs and then scratched to provide a key for subsequent coats to be applied. The first scratch coat should be left to cure and harden. Ideally this should be 7 - 10 days depending on site & atmospheric conditions.
Do not allow the plaster or render to dry out too quickly or cracking may occur. The minimum plaster thickness should be 15mm and the maximum thickness (sand / cement 30mm) (lightweight plasters 40mm).
Plasterboard can be bonded using regular ‘dab’ adhesive or Low Expansion Polyurethane Foam Adhesive (See Soudabond Easy). Apply the adhesive over the heads of the fixing plugs and ensure that 50% of the membrane area is also covered. This ensures that direct ‘through’ contact is made between the plasterboard and the masonry substrate.
Plasterboard fixed in this way can be skimmed the next day and painted or wallpapered a few days after that. Drying times are very much reduced when compared to ‘wet’ systems.
Platinum Building Chemicals Ltd | Waterproofing Membranes
Platinum Waterseal Brick Plugs are used in Basement Waterproofing and Damp Proofing applications to secure specialist Cavity Drain Membranes to the base material, usually brickwork & concrete.
Platinum Waterseal Brick Plugs are manufactured from glass filled polyamide which gives a high strength, corrosion resistant fixing.
The Sealing Washers are used in conjunction with Platinum Waterseal Brick Plugs to provide a watertight seal under the fixing head.
Plug Size: (W) 10mm x (L) 60mm
Washer Size: Accepts 10mm wide plug.
Application requires a drilling of a 10mm diameter hole through the membrane and into the solid base material.
A central hole in the fixing will accept a woodscrew for securing timber battens for internal lining systems.
Platinum Building Chemicals Ltd | Damp Proofing
In above ground installations, Platinum 'Mesh-Fix' Plaster Plugs can be used internally and externally to secure Damp Proofing Meshed Membranes.
Use an 8mm SDS Drill Bit to drill through membrane and substrate prior to hammering home fixing plug.
Newton® 801-M Mastic Sealant should be injected into the drilled hole before fixing the plug into the membrane, it serves to stop any ‘bridge’ happening between the damp or stained surface and the new surface and is also used for sealing around protrusions.
Platinum Cob Plugs are used to secure Damp Proofing Membranes and lining boards to poor quality base material.
Brickwork and blockwork in particular can become soft and unsuitable for standard Plaster Plugs. Platinum Cob Plugs have an expansion pin which provides a secure fixing to poor quality base material.
Platinum Cob Plug are supplied in 60mm and 90mm lengths.
When fixing membrane to the wall using Platinum Cob Plugs, use a 10mm Drill Bit and drill to a depth of 5mm deeper than the plugs length (i.e if using using a 60mm Cob Plug, drill to a depth of 65mm. This will allow sufficient space for the fixing to expand in the substrate).
Insert the Cob Plug into the drilled hole and hit the central nail into the plug. This will make the Cob Plug expand into the substrate and create a secure fixing.
Platinum Corner Strip is used to create single sided taped joints as an overtape to seal adjacent butted and overlapped membranes, or to seal above joins to the membrane created whilst shaping the membrane to fit convoluted substrate.
Platinum Corner Strip Tape can also be used for the sealing of protrusions through the membrane.
Available in 150mm or 100mm widths, in either 20M, 10M or 5M Lengths.
Platinum Waterseal Tape is a Black Butyl Tape to be used for jointing Waterproof Membranes along the flange where they overlap. Platinum Waterseal Tape is used for abutting joints, for repairs or where membranes have been cut to enable them to overlap such as at corners, reveals, wall / floor joints or protrusions through the membrane.
Platinum Mesh Tape is a self-adhesive sealing tape made of a butyl rubber compound with a polypropylene fleece finish.
The tape has been developed for use with Meshed Membranes where a surface ‘key’ is required for plastering or rendering over.
Platinum Mesh Tape can also be used as an overtape to provide a key above joints to meshed membranes over joints already sealed with Waterseal Tape, Waterseal Rope or Corner Strip / OverTape.
Platinum Waterseal Rope is used to form a seal at the overlap of adjacent sheets of Waterproof Membranes when neither a flange joint of stud into stud joint has been made.
A bead of Waterseal Rope is used for the sealing of penetrations through the Waterproof Membranes.
Platinum Waterseal Rope is also used to create a sealing ring to the base of Brick Plugs or Plaster Membrane Fixings.
Triton Systems | Basement Drainage Systems
When installing Cavity Drainage Membranes careful attention must be given to provide a suitable drainage solution. Natural drainage is not normally possible or convenient in below ground situations, so mechanical drainage must be used.
The Triton Aqua Pump is a ready to use complete water control system principally designed for use in below ground structures to control water ingress.
The system consists of a pre-formed polyethylene sump basin, a mains powered 230v submersible pump, a non-return valve assembly and a battery operated high water level alarm, which is linked to an integral float switch.
The Triton Aqua Pump System can be linked to the Aqua Channel Drainage System to manage water ingress from retaining walls and in turn pumping out to a suitable drainage point.
IMPORTANT NOTE: The Triton Aqua Pump must only be used for pumping ground water.
The pump should not be used to pump grey water from; sinks, washing machines, dishwashers, condensing boilers or effluent.
We will not accept responsibility or liability for pump failure or damage caused due to the misuse of the pumping system.
Available as a Single Pump System (Aqua Pump) or Twin Pump System (Aqua Pump PLUS).
The Sump Basin is a polyethylene pre-formed chamber, measuring 560mm high x 540mm diameter (top) x 460mm diameter (base) and is most commonly located into the floor, finishing flush with the surrounding floor level.
The Sump Basin is supplied with a structural foam flat lid, which can accept foot traffic.
The lid can be easily removed to allow regular maintenance of the internal submersible pump or pumps.
The pump is positioned within the Sump Basin and is controlled by an automatic snap-action float switch.
As the water level increases within the sump the float rises and when the pre-set switch level is reached the pump will automatically operate and discharge the water. The Pump is 230v and requires wiring into an independent fused spur outlet within 1.5m of the pump.
To avoid any discharged water backing-up into the sump basin, a non-return valve assembly is provided. This is fitted directly to the submersible pump outlet via flexible couplings and supplied ready to accept a standard 1½” waste pipe.
The High Water Level Alarm is an essential component within the Aqua Pump system. In the event of mechanical failure of the pump or an unexpected power failure, the water will continue to fill the sump. When the water reaches the level of the alarm float switch, the 80db alarm will sound, giving warning of the failure.
The alarm is powered by a 9v battery, which should be positioned in a convenient location such as a kitchen / lounge where it will be easily heard. Once the alarm is heard immediate action must be taken to avoid flooding.
The site conditions or situation being encountered may well determine the positioning of the Triton Aqua Pump System. However, ideally it should be sighted at the lowest point of the room and or closest to the nearest point where water will be discharged.
The most important thing is to make sure that water can get to the pumping station. Once the pump position has been established, dig a circular hole to a depth of 650mm and to a width of 650mm.
At the base of the walls of the sump basin, drill 4 holes opposite each other, (12mm dia), insert two lengths of reinforcing bar (660mm long) through drilled holes .These will add additional anchoring for the sump basin in the ground.
Fit the high water level alarm float switch sensor into the pre-cut hole provided within the wall of the sump basin and ensure that the (jaw) of the switch sensor is open and hangs downwards. Bring the two cables with bullet connectors attached back into the sump basin either through one of the holes provide or by drilling a hole and leave ready to be connected to the wires of the water alarm.
NB: If the water discharge pipe from the pump is to be concealed below the floor, then a 1½” hole will need to be cut through the side of the basin. However, the position of this hole can only be determined once the sump basin has been offered into position, otherwise the discharge pipe can be taken through the lid of the basin.
Lay approx 100mm concrete at the base of the hole and insert the sump basin.
Using a spirit level, adjust the top of the basin to the level of the finished floor level. Fill the basin two thirds with water, then infill around sump basin with concrete, ensuring it is well compacted.
NB: If a Cavity Drain Membrane is being installed over the floor, then the concrete will need to be finished 100mm lower than the top of the sump, drill a number of perforations to the edge of the sump basin and infill void above concrete with 20mm stone.
However, if a Cavity Drain Membrane is not going to be installed over the floor, the concrete should finish flush with top of the sump basin.
Insert the Aqua Pump in the base of the sump basin and connect the water discharge pipe to the flexible coupling already attached to the pump. The discharge end of the pipe can be taken through a wall and extended to a gully outlet at ground/street level.
Alternatively, the discharge pipe can be connected straight into a soil pipe using a ‘boss’ connection.
Where a Twin Pump installation is being used (Aqua Pump Plus), each pump must be wired into an independent fused spur outlet. One of the Aqua Pumps (the secondary pump) in the double pump kit will have been fitted with 25mm long spacers at the base of the pump so that this pump is raised off the bottom of the sump basin.
Connect the wires from the float switch sensor to the wires of the water alarm using the bullet connectors provided. Then connect the pumps' power cable into a fused spur outlet (fuse rating 5amp) and test the pump and alarm for working order.
It is recommended that the Triton Aqua Pump System is maintained or serviced at a minimum every six months. This should be carried out by a competent contractor (under a maintenance contract) or by the property owner.
During a service all parts of the Aqua Pump kit should be checked to ensure fully operational. The sump should be cleared of any silt / sludge that may have accumulated to avoid potential damage to the pumps.
The sump must be filled with water to ensure the automatic float switch and pump are fully operational. We recommend renewal of the 9v battery within the alarm and that the alarm float switch checked to ensure the alarm sounds. Any defective parts must be replaced / repaired to avoid failure of the system.
Example of suitable sump, pump and drainage schedule can be found in the Platon® Manual (See 'Data Sheets' tab)
We recommend records of each service be kept by the property owner.
Platinum Building Chemicals Ltd | Basement Tanking
Platinum Lime Inhibitor is specifically formulated for the control of primary and secondary efflorescence in concrete mixes.
Platinum Lime Inhibitor is applied to concrete surfaces prior to the installation of a 'Type C' Cavity Drain Membrane System to prevent the ‘leaching’ of free lime from the concrete.
Primarily designed to be used on new concrete structures, Platinum Lime Inhibitor should also be used to treat cut recesses in existing concrete slabs.
Concrete floors newer than 12 months. The whole of the concrete slab or raft as well as the recess formed ready for Drainage Conduits / Channels.
Walls - 200mm up the wall from the floor, or where a ‘kicker’ has been formed to a concrete wall, apply from the floor up to 200mm above the kicker.
Concrete floors older than 12 months - The recess cut into the concrete ready for Drainage Conduits / Channels as well as 200mm either side of floor construction or movement joints.
Underpinned properties require application to 200mm either side of the joints. Dry-packed areas should be sealed with a cement-based tanking product and then the tanking treated with Platinum Lime Inhibitor
Prevents limescale build up
Solvent and caustic free
Easy to use and handle
Non-hazardous (on dilution)
Compatible with alkaline substrates
Long term durability
Complies with BS8102:2009
Clean the surface to be treated, removing any dirt, mould or loose coatings.
Mould release agents or floor paints should be completely removed.
The Lime Inhibitor can be applied to damp substrates but cannot be applied to wet substrates.
Remove all standing water prior to application.
Pour 8 Litres of clean water into a large empty bucket or mixing drum.
Empty contents of 1 Litre Lime Inhibitor into the mix, then fill the empty 1 Litre container with clean water to wash the container and empty into the mix to make a 10 litre ready to use solution.
Pour contents into a Spray Applicator.
Moving along the floor from one end to the next apply an even single coat using a coarse spray.
Avoid using a fine mist and avoid ponding of the liquid on the surface.
Coverage will mainly depend on the porosity of the surface. 10 litres will cover a maximum of 100m²
Designed to be used in conjunction with a cavity drained system, Triton® Aqua Channel is a PVC drainage conduit which should be fitted around the periphery of an internal floor at the vulnerable wall / floor junction or, when appropriate, offset from the wall.
Any water entering the building through walls or curved soffits is controlled behind the membrane and enters the channel through the pre-drilled 19mm holes before being diverted to the mechanical (Sump and Pump) or natural drainage point.
Form a trough 130mm deep x 130mm wide in the floor at the wall/floor junction.
Apply the Cavity Drain Membrane to the wall and finish 100mm minimum below existing floor level.
Lay a shallow bed of 20mm stone into the trough. Place the Aqua Channel onto the stone with the upstand to the top and flat against the waterproofing/cavity drain membrane to the wall.
Lengths of Aqua Channel are butt jointed on straight runs using the Aqua Channel In-Line Connectors.
The Aqua Channel Corner Piece (also available with an additional Rodding Eye) is used to join lengths of Aqua Channel conduit at corners.
Fit the Aqua Channel - Channel Outlet into the Aqua Channel at the appropriate location.
The Aqua Channel outlet requires a 40mm hole in the underside of the Aqua Channel. The Aqua Channel - Channel Outlet is solvent welded to the channel using the internal male coupling. A chase should be formed into the floor to accommodate the outlet pipe from the Aqua Channel to the sump or drain.
Infill the remaining gap between the Aqua Channel and the side of the trough with 20mm stone and finish flush with the flat surface of the Aqua Channel.
When installing a membrane over the floor, make good the remaining area with 20mm stone. Lay the membrane over the floor area and seal to the wall membrane using Corner Strip / Overtape.
When the Cavity Drain Membrane is not going to be installed over the floor, make good the remaining area with approximately 50mm screed.
It is recommended that the Aqua Channel be jet washed via the Rodding Eyes, which should be incorporated in the channel system, at least once every six months.
This should be carried out by the installing contractor (under a maintenance contract) or by the property owner. During this cleaning process the pumps (if installed) should also be run with water out of the sump chamber to ensure they are fully operational and that the sump chamber be cleaned of any sludge / silt that may have accumulated.
In addition to this, the high water level battery alarm box and alarm sensor should also checked for working order.
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