Tilemaster FAST One Coat DPM is a two component, solvent free, one coat epoxy Damp Proof Membrane. Listed below are the advantages of using CIM 1000’ s fluid-applied membrane system beneath a thin set and tile assembly: high solids, low odor and VOC compliant. Category: Floor Treatment Tags: Damp Proof Membrane, Damp Proofing. Ideal for use where there is no functioning structural DPM (common in older properties). Aggregate: Granular material, such as gravel, sand, iron blast-furnace slag and crushed stone, used with a. It’s primarily designed for brushing onto concrete floors and fine concrete screeds. Fully isolate the dampness from the floor covering. This Epoxy DPM is a two-component, solvent-free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. Go to product. Products in Waterproofing Systems Damp-Proof Membranes. Brands. Can be used underwater, ideal for minor repair applications. We have had a quote for taking up the tiles. Most damp-proof floor coatings are applied directly to the concrete floor surface using a brush or roller. Once dry, it creates a new damp and vapour proof membrane that can be overcoated with screed, tiles or insulation for wooden floors or floating floors. These Membranes can have a plain surface, for battening, or a Mesh surface for direct plastering or plaster boarding. Unfortunately this is quite an expensive fix but it works!Air Gap Membranes, Damp Proof Membranes and Plastic Lining Membranes – A modern, vapour proof barrier lining – it is a dimpled plastic sheet fixed onto brick, stone, block or render with plastic plugs to form an air gap cavity. It is a highly effective membrane designed to be easy and quick to paint on (unlike others on the market). 4 or A118/15. epoxy based. It is supplied ready to use. 0m² at a thickness of 2 - 3mm. An advanced, ready-to-use, chemical damp proofing formula which forms an effective moisture barrier within the wall. Tiling As secondary protection under tiles inSOGO Department Store Renovation. Use on areas of damp concrete which cannot be surface dried prior to painting; Virtually solvent free liquid epoxy resin damp-proofer; 100% solids, high build coating; Holds back rising damp where a damp proof membrane is either missing or defective; Withstands 98% RH (relative humidity) Can be over painted after 16 hours with most types of. Latest activity Register. Expect to pay between $500 and $750 to completely waterproof an average sized bathroom. The wall is totally internal - doesn't have contact with an outside wall. 3 days. The product is applied in two coats. It has excellent adhesion to most substrates including brick, masonry, concrete block, concrete, stone and timber and is simple to apply with a brush or roller. g. Add to basket. It is […] DIYDave. hk. I think there is no membrane under the kitchen floor (concrete?) which has tiles (in good condition) on top of the original quarry tiles. Find out how in the vide. Vespol Alcor Dampcourse Standard 230mmx30M. Your biggest worry is your porcelain tiles cracking if you lay then on the quarry tiles, please consider upgrading the floor to comply with the. A surface DPM, which bonds to the surface of the concrete, minimises moisture vapour transmission. Liquid Membrane. It is available in black or white with a consistency similar to that of thick emulsion paint. 2M X 14M 1000G Black Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Hydro pressure intensifies with depth and soil wetness, like near ponds or creeks. SmartCare Damp Sheath Interior prevents surface dampness from manifesting itself on top coat and enhances. Please include as much detail about your issue as possible and if you feel it will help attach a photograph. Waterproofing vs. Both types can be applied to floors and walls. Form Two part bag & bottle Composition Cement/polymer liquid Product Codes 30607624 20kg 30607626 4. 1. For further information please contact our technical department. 2M X 14M 1000G Black Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. There is a radiator against it on one side, but the pipework there is all dry. ARDITEX NA is formulated with excellent adhesion designed to work perfectly UNDER a damp proof membrane. £. An ARDEX Damp Proof Membrane will protect the floorcovering. Pro Tilers. When applied on top of screed, it needs to have a further coating to protect it from damage such as laminate, tiles, vinyl, wood and carpets. Quarry tiles are installed on the solid concrete slab which is a good. Thread starter kerry452; Start date 9 Feb 2013; K. lexie01 · 15/09/2010 11:26. Simply brush or roller the epoxy damp proof membrane onto the substrate, allow to dry for 1-2 hours then re-coat. prior to the application of Bostik Screedmaster damp proof membranes. It is thicker than other products on the list, which does increase the overall weight. A DPM may also be used with a damp proof course (DPC) to ensure complete protection from penetrating and rising damp. To laymen, it would seem like this. Newer tile installations that haven’t received much use will be fine with a coating of liquid membrane or sealant. When smoothing a rough floor prior to applying Bostik Screedmaster damp proof membrane priming the The photographs show what can be achieved with Quarry tiles suffering from inherent damp issues. Aqua Shine is a water-based methacrylate cure and sealer developed for interior and exterior applications, such as exposed aggregate, natural stone, brick, quarry tile, terrazzo, and other concrete surfaces. 74 (inc VAT) wedi 520 Waterproofing Membrane £ 143. Liquid Epoxy Damp Proof Membrane - 5kg. Under damp proof membranes; Substrates: New and existing concrete; Damp or moisture vulnerable concrete; Ceramic and quarry tiled floors; Steel decks; Timber floors (contact ARDEX Technical Services) Thickness: Feather edge to 12mm; Bulkfill 10-30mm with 2-5mm aggregate; Coverage: 12m 2 at 1mm; 4m 2 at 3mm; Drying Times: Walkable from 1. 08 – £ 104. 5kg pail: 10613. My husband and I have recently purchased a victorian property in need of slight renovation. 60 per L . Fast-Drying Polyurethane Undertile Waterproofing Membrane. condensation, rising damp, penetrating damp, hygroscopic damp etc…. This barrier is intended to stop moisture passing from one to the other. In accordance with BRE Good Building Guide 28 Part 1 (Domestic floors: construction insulation and damp–proofing), irregularities should not exceed 5 mm when measured with a 3 metre straight edge. 00. READY-TO-USE, EFFECTIVE DAMPPROOF MEMBRANE PRODUCT DESCRIPTION EVERBUILD® BLACK JACK® 908 D. If the Quarry tiles are solid with no movement, two coats of a quality DPM is fine before self leveling. 5% water by weight (Carbide Bomb test) the drying time. Call us on 302 244 0179 or submit an enquiry for help with damp-proofing interior basement walls. 3K views. Virtually solvent free liquid epoxy resin damp-proofer. Applications. Commercial Cement-based Self-leveling Compounds. Walls can become damp for a multitude of different reasons. waterproofing liquid used as a damp proof membrane and water-repellent coating. Drybase Black Liquid Damp Proof Membrane - 5L (0) £55 . 3. 12 replies 7. Allow this treatment to work and wash down to leave a clean surface. , Ketley Brick and Dreadnought Tiles, Dreadnought Road, Pensnett, Brierley Hill DY5 4TH Tel: +44 (0)1384 77405 - 2 - risk of further shrinkage movement or where a damp-proof membrane is incorporated between the concrete base and screed. 50 to $5. It should be waterproof to prevent any rising damp getting through. Damp proof membrane (DPM) taped at the edges and anywhere it is joined. Roller or spray applied. Description. Damp kitchen tiles. The installation of a liquid damp proof membrane is a vital stage in the construction process, for both new builds and refurbishment work where a structural DPM may be missing or damaged, or where residual construction moisture is present in the floor. A damp proof membrane, more commonly known as a DPM, is a material that prevents moisture from penetrating the internal walls and floors of a property. ‘Begin with a layer of sand insulation with a damp proof membrane installed on top, finishing off with the insulation foam boards then a new layer of concrete poured on top,’ says Jenny Turner. Burst gutters and pipes. The previous owner had put down a laminate floor on top of these quarries with a DIY store underlay which had a foil covering which I think was meant to act as a damp proof membrane. You should use them to protect all final floor finishes. I would say if you want it done properly i would dig up the floor and lay some damp proof membrane, maybe some insulation and concrete it. Rapid, High Flow Self-Leveling Underlayment. • Bathrooms and shower cubicles. The liquid membrane is applied in two coats, the first is applied horizontally and the second is applied vertically. It is available in black or white with a consistency similar to that of thick emulsion paint. Last edited: Sep 2, 2010. They also have excellent adhesion to saturated concrete even at lower temperatures making them ideal for tough winter conditions. Acrylic membrane systems are relatively cheap compared to other membrane systems. Where traditional pressure injection fluid cannot be used, Dri-Wall is the answer. 1. Malthoid 5 ply. If you have to damp proof I would look at ditra rather than a liquid system. Exterior weeping tile installation costs $1,500 to $4,000 per side of house or $10 to $35 per linear foot when installed near the ground's surface in warm climates. I've found that the only way to damp proof quarry tiles is to lay a 20mm screed of flooring quality mastic asphalt. 8kg. This will dramatically reduce strength and cause cracking. Do not mix more compound than can be laid in 20 minutes and never try to reconstitute once the Adhesive failure, staining, discolouration and efflorescence can all occur due to moisture emanating from the subfloor, so it is essential that the final finished tiled floor is protected from the damaging effects of moisture from below with a Damp Proof Membrane (DPM) Surface damp proof membranes, like new BAL DPM, will protect tile adhesive. £159. Can be easily applied by brush. That means it’s a perfect paint on damp proofing. 60 Ex. 23 Jul 2018. We have had a full structural survey done which highlighted damp at the ground floor level. I am the Managing Director of. If the coating is not going to be the final decorative surface and. There is a radiator against it on one side, but the pipework there is all dry. The liquid membrane should be 1 mm thick all around the wet room, and we are aiming for an even coat all the way around. Thickness: Feather edge to 12mm; Bulkfill 10-30mm with 2-5mm aggregate; Floor Coverings: Linoleum, vinyl. HYDRO BAN is a single component self-curing liquid rubber polymer that forms a flexible, seamless waterproofing membrane. Since the carpet came up it has been fine. The lead can be dressed to complex shapes without fracture and it possesses high resistance to sliding action. 5mm]), load bearing, flexible, liquid applied waterproofing membrane system consisting of a liquid rubber polymer that is cold applied with an integral reinforcing fabric to provide a seamless waterproof membrane. Also widely used for fabric protection of sub. As the liquid dries, it undergoes a curing process, forming a seamless and protective layer. Sika® Membrane-2000 is flexible and elastomeric, and displays outstanding waterproofing features with low water vapour transmission properties and the ability to withstand permanently wet conditions without re. A damp-proof membrane safeguards a building's concrete slab against moisture that may permeate from the foundations. TO ENTIRELY DIG THE EXTERNAL PERIMETER OF THE BUILDING AT LEAST 300mm below the vapour barrier system Polyethylene (plastic) damaged areas, which will vary in areas and then apply a liquid damp-proofing membrane ( waterproofing ) to the face of the concrete slab, As per 5. Quarry tiles made of Drybase 2mm Plaster Membrane Mesh (2m x 20m) - Low-Profile Plaster Membrane For Use on Damp Walls. Integral damp. 5L (20) £24. Capital Valley. Damp-proof membranes can come flat or in rolls that look a bit like a big bin liner roll. I would say the quarries are sitting on an ash substrate possibly, a damp course i. Insulating. ie. Quarry tiles, known for their strength and durability, can be susceptible to water damage and moisture penetration, which in. It is ideal for use where low odour products are required. Use to level and smooth interior concrete, terrazzo, ceramic and quarry tile, epoxy coating systems and non-water-soluble adhesive residue on concrete. 150mm x 10m Visqueen Gas Barrier Visqueen Liquid Gas Membrane Visqueen Low Permeability Gas Membrane Visqueen Radon R400 Membrane Visqueen Ultimate GeoSeal. Ready for your floor finish. DIYDave. This is a continuous liquid waterproofing agent applied to your foundation’s exterior. Damp-proof courses to suspended timber floors at ground level: 32 7. #1. Floor Coverings: Linoleum, vinyl, carpet. Packaging: Part 1 Liquid 10kg and Part 2 Powder 10kg. Wet Room Shower Bathroom Waterproof Tanking Tape Waterproof Membrane 10M Roll . Sheet Membrane Waterproofing On average, sheet membranes cost slightly more than liquid. The liquid membrane needs to be allowed to dry for at least six hours between coats. Can be used as a damp proof membrane and as part of a designed structural waterproofing system. Damp-Proof Floor Coating. You can tile immediately on to contaminated, stained or cracked screeds and over bitumen. This clearly failed as when taking the old laminate up around 25% of the floor was completely damp and the damp had progressed into the old laminate boards. We have purchased a 4 bed detached house built in the 1950's. 2. A liquid epoxy damp proof membrane (DPM) is a two-component epoxy resin membrane, specifically designed to be applied to damp floors to create a barrier between your floor and the layer below. Wet rooms Embedded timbers Sunken posts Floors (e. Tiling. GH₵ 1,350. The product will not resist rising damp. Waterproofing and moisture barriers are completely different products with different jobs. Country. Consider whether you need to apply sealer. 50 to $2. No need for a separate primer. £47. Go to product. Jul 13, 2011. Tiling: As secondary protection under tiles in wet areas e. Choose from a wide range of colours and designs, and benefit from fast delivery when ordering before 12pm. Sometimes asphalt was used as a screed for a DPM. 12. It is made of crystal or elastic liquid that. The minimum sand and cement screed thickness would be 40mm as defined by the British standard. It is possible to waterproof and tile over existing tiles, provided the existing tiles are in good condition and firmly attached to the substrate. Damp proofing can also be integral when added to the concrete mix, the concrete itself water resistant. PRODUCT CHARACTERISTICSFirstly, paint the quarry tiles with a liquid damp proof course, let it dry. Have to ask though, why not just use the right stuff ? 10 March 2012 at 12:55PM. Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m (47163) (55) compare. Liquid Damp Proof Membrane Hydraguard is a High Performance Primer. common settings where the use of epoxy adhesives would be beneficial. Installed uncoupling membrane costs from $3. 186. £1. This will work to. Can be sprayed or trowel. If it is Quarry tiles it. 1: External masonry walls. ARDITEX NA is formulated with excellent adhesion designed to work perfectly UNDER a damp proof membrane. Installing a damp proof membrane. Fixing them could well solve the problem. Use plastic spacers to ensure equal gaps between tiles (we recommend 6mm). Damp-proof membrane: A damp-proof membrane has the advantage of being able to be applied to a damp concrete floor and walls. here are some pictures of the floor after i have pulled up the original slabs and the damp membrane. ) so I am aiming for Bison +45mm as finished floor level. £9. Protect buildings from moisture. 7. ECOMIRROR TETTI Liquid membrane based on elastomeric resins & glass hollow microspheres of 3M. 1. If you already have a concrete floor which is damp, then the best solution is to use a Liquid Epoxy Damp Proof Membrane. LATICRETE is a 3rd generation family-owned, leading manufacturer of globally proven construction solutions for the building industry. Home. Terrazzo, Stone, Quarry tiles Some existing flooring materials such as quarry tiles, ceramic or terrazzo may be suitable for the installation of Amtico tiles if properly prepared. ABOUT US. kerry452. Wickes Quick Drying Drive. Buy damp proof membrane at Mitre 10. An ARDEX Damp Proof Membrane will protect the floorcovering. 6. Sealing Victorian TilesInformation ARDEX DPM 1 C. Moisture-reduction barriers control moisture in a vapor state. The report says there is no DPM. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. Liquid Damp-Proofing Systems. The product is applied in two coats. Damp Proof Membrane: Hydraguard limits the release of moisture to 5mg per m2 per day. Liquid DPM ( Damp Proof Membrane) 2020-05-04T21:34:09+00:00. 33. This property was situated only a few hundred yards from the River Nene in Thrapston, near Kettering in Northamptonshire. Early morning TV viewers in Portland, Maine, sooner or later will. $ 36. 61. If you're laying Karndean over existing flooring, be sure it is properly prepared. The thickness of concrete would be minimum of 100mm. it is still not level so will need another layer os self. You also mentioned that there are vinyl tiles over the floor. 4 24 2 hrs indef. It is water based, free of solvents and plasticisers. We have had a full structural survey done which highlighted damp at the ground floor level. Assuming that the damp proof membrane (dpm) under the concrete has failed in areas then yes you possibly would get the odd patch of dampness showing in the floor. Apply the first coat of Vetoproof AM764 at the rate of 1. So the depth you dog depends on how much insulation you put down. 2 coats SBR. D. RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer. starstarstarstarstar. Tanking walls or tanking a cellar either uses standard damp-proof membranes or a liquid coating. Application. Ceramic tiles should be a minimum of: 200mm x 200mm x 10mm. Roller applied, Hydraguard is a Liquid Damp Proof Membrane used to limit moisture release; improve the strength of substrates; seal pin holes and air pockets and provide an enhanced surface for bonding for subsequent coatings. 64. Ensure the subfloor is dry and incorporates an effective damp proof membrane. 24-month shelf life from date of manufacture when stored to manufacturer's instructions. £9. The hose length should not exceed 100’ (30 m) in length and 3/8” (9 mm) in diameter. Thickness: Feather edge to 12mm; Bulkfill 10-30mm with 2-5mm aggregate; Floor Coverings: Linoleum, vinyl. 31 October 2010 at 2:53PM in In my home (includes DIY) MoneySaving. I stand to be corrected tho. Easy and fast installation to foundation walls. It’s quickly applied with a paint brush or long nap paint roller to form a. co. 5m) It will have 50mm insulation boards on top of it, followed by 18mm/22mm chipboard, followed by tiles. Ceramic and quarry tiles Floating timber; Substrates: New and existing concrete Damp or moisture vulnerable concrete Ceramic and quarry tiled floors Steel decks Timber floors (contact ARDEX Technical Services) Location: Internal and external Under damp proof membranes; Coverage: 12m 2 at 1mm, 4m 2 at 3mm; Drying Times: Walkable from 1-2 hours READY-TO-USE, EFFECTIVE DAMPPROOF MEMBRANE PRODUCT DESCRIPTION EVERBUILD® BLACK JACK® 908 D. 5m. Block & Wall adheres to various surface types & dries to a strong, flexible, waterproof membrane. Therefore, damp proofings work best in relatively dry locations. € 80. g. An ARDEX Damp Proof Membrane will protect the. Merlin Barrier Coat can be applied directly onto wet surfaces free from standing water and when used as a. When I come home at night after being out for several hours, I often (but not always) notice a musty/stale smell immediately inside the front door of my 1978 bungalow. . Ardex A46 Rapid External Repair Mortar 11kg. Adhesive: An adhesive or glue is a material, usually in a liquid or semi-liquid state, that adheres or bonds. For. As a rule of thumb, to achieve a moisture content of 0. UltraFloor DPM IT, rapid curing primer membrane is a two component, solvent free epoxy resin system for use as a surface DPM and as a screed bonding aid (primer) for. That’s assuming quarry tiles are in good condition, no loose tiles, no known problems with major damp, no issue with raising floor height by leaving tiles in place, etc. Exterior applications require. At Fastbuild Supplies, you can find a comprehensive selection. Self levelling compound. Our Liquid DPM paint that can be applied above and below screeds to provide an elastic damp proof membrane for floors. Click & Collect. Bitumen: Bitumen is a highly flexible material that is often used as a damp proof course in construction. 00 per square foot, uninstalled. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. Dri-Wall DPC Injection Cream. Drybase ® Liquid-Applied DPM is water-based and can be applied to damp substrates by brush, roller, or spray. This can mean tanking walls or choosing damp-proof membranes for walls. A ready to use primer for enhancing the adhesion between surfaces and Dunlop Tile Adhesives, Floor Preparation and Waterproofing products. 100% solids, high build coating. In a house with a DPM already installed you will have a few inches of concrete to weigh the dpm sheet down. Today there are different technologies available for liquid applied membranes (LAM) and damp proof membranes (DPM). Buy damp proof membrane at Mitre 10. 2 coats SBR. Merlin Barrier Coat can be applied directly onto wet surfaces free from standing water and when used as a. We have had a quote for taking up the tiles. Benefits • Damp-proof barrier • Gas and radon barrierThe removal leaves a surface the bonding agent can bond to, ensuring the screed does it’s job. Drybase® Liquid-Applied DPM provides a barrier to damp and ground gases (including radon, carbon dioxide, and methane). USE As a liquid damp proof membrane within floors and walls that are not subject to hydrostatic pressure. screeds, rigid metal, terrazzo and quarry tiles, and asphalt and other strong, rigid subfloors. Rubber-Modified,. Sandwiching will give you a nice flat surface and also eradicate any water vapour coming up through the screed and ruining your flooring. It is ideal. In new construction Protectahome provide Damp Proof Membrane solutions including liquid applied membranes, bonded membranes, sheet membranes, cavity membranes, mastic asphalt, waterproof screeds and epoxy resin membranes. That’s Mighty Helpful, that’s Mitre 10. Features & Benefits: Damp Proof Liquid Membrane - Black Jack DPM - 25 LitresPerfect for treating commercial or domestic wet rooms before tiling. Overview: All of the water proofing benefits of our Damp Guard Liquid Membrane but with the added feature of anti-condensation technology. No Drill or Mixing Tools Required. ARDEX WPM 300. Extremely versatile - bonds a wide range of materials including metal, glass, wood, ceramics and plastic. Rapid, High Flow Self-Leveling Underlayment. Fast-track floor installation in the downtown. Water-based, liquid applied, waterproof membrane. Generally, when laying self-levelling screed the substrate should be 75% relative humidity or less, if above a liquid damp proof membrane maybe required to suppress the available. This must cover the whole floor area. The damp surveyor has identified the laminate flooring as a possible cause. 95 Inc Vat. Also acts as a waterproofer for walls, above ground structures and foundations. Replies 0 Views 1K. Tig Bits Member. 7x more water resistant than regular primer. It should accommodate 0mm to 5mm (or thereabouts) It will cover an area of 26m2 (4m x 6. In the case of gluing the floor, a liquid damp proof membrane should be used in conjunction with a suitable adhesive. WAteR BASeD LiqUiD MeMBRAneSAsian Paints SmartCare Damp Proof is a fiber reinforced elastomeric liquid applied waterproofing membrane for waterproofing of flat and sloping roofs. rogerk101, Mar 13, 2020. PermaSEAL Liquid DPM can also be applied to concrete floors below screeds. Basements As part of a waterproofing system beneath ground level. The surface of the slab should be smooth, flat and free from projections. Self levelling screed levels out uneven substrates leaving a smooth flat surface to bond to. £. Technoseal is a ready-to-use, liquid damp-proofing membrane which provides a seamless, waterproof and radon barrier, ideal to use as part of a below ground-level waterproofing system. You really should use a damp proof membrane over concrete floor. Can be applied to damp surfaces AS 4020:2000 Pot. Your solid floor is porous (which is normal), trouble is water is getting into it either from underneath or from the sides. Embossed to Assist Mortar Adhesion - Cost Effective dpc,. The floor of the room then needs to be dried out as much as possible. Waterproof Paint. then any flooring can be laid over this. You can apply an impregnating sealer to a floor without a damp-proof membrane because an impregnating sealer allows moisture to pass freely through the tiles. Floor Coverings: Linoleum, vinyl, carpet. 9m²/kg and allow it to cure for 4 - 12 hours, depending on the ambient. LATICRETE offers a broad range of products and systems covering tile & stone installation and care, masonry installation and care, resinous and decorative floor finishes, concrete construction chemicals, and concrete. PermaSEAL Liquid DPM can also be applied to concrete floors below screeds. 0m² at a thickness of 2 - 3mm. Which type of coating is chosen will depend on the intended use of the floor. Liquid DPM over quarry tiles is a comprehensive guide that aims to provide valuable insights into preserving and safeguarding the integrity of your floor by utilizing the. Drybase Liquid-Applied DPM is water-. Most basements are built in a way to keep out soil moisture by employing damp proofing. Cavity Drain Membranes: 1. The floor of the room then needs to be dried out as much as possible. Usage/purpose. DAMP PROOF POLYETHYLENE MEMBRANE GAUGE 1000. The best way is to remove the quarry tiles, dig out the floor lay a membrane and then concrete it! However this is rather a drastic option but to do it correctly this would be the way. Add to Cart. How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. It is very long-lasting and durable. Damp proof membranes can be used to help resolve damp issues which already. Coventry Tiling. Remove and Smooth. 98/3454), high performance, brush applied damp proofing emulsion containing synthetic rubber latex which provides a seamless waterproof and vapour resistant, black elastomeric membrane. Introducing impermeable damp proof membranes and materials into the floor structure which are highly resistant to the passage of moisture, are oten not. I agree, looking at the liquid DPM's that Wickes do I'd say you'll struggle to get someone to. g.