01/12/2021. Kent. The membrane dries to form a tough semi-gloss finish. Prevents rising damp and efflorescence. I'd like to put a bit of self levelling compound down so the insulation is evenly supported. #2. Since 1991, Polycote have laid millions of square metres of epoxy floor paints and coatings in almost every environment throughout the UK. If you need to lay floor tile. Underlayment for Laminate Floor (moisture barrier)Damp proof membrane for structural waterproofing Damp proof membranes (DPMs) are required for use either above or below solid concrete floor slabs that are in contact with the ground. It is important to ensure enough DPM is lapped to encompass the whole floor build up with a little excess. 5kg. Prepare substrate. take account of possible differential. DynamiteMatt; 17 Dec 2013; Floors, Stairs and Lofts; Replies 1 Views 1K. No DPM. This method is very costly and extremely invasive. merit said: ↑. Preparation is the main thing for the layers, and the substrate should be dry and clean. How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. DPM Primer is a system for substrates that have a residual moisture level greater than 75% RH. That means it’s a perfect paint on damp proofing. OK stuck - Liquid DPM, concrete floor and a pipe. Sikabond Rapid DPM is a solvent free reaction curing resin primer and damp-proof membrane for cement based substrates. Drybase Liquid DPM is recommended for use on concrete, masonry and embedded timbers in above-ground applications. Membranes. Method 2 - No damp proof membrane (DPM) Where no DPM is incorporated into the precast beam and block floor, the following provisions will apply: • The beam and block floor must be laid above the DPC. richel7. We have purchased a 4 bed detached house built in the 1950's. 19. 50 /sqm. £107. Pour the resin into a clean, dry bucket. This water-based compound can be applied to damp concrete floor slabs, screeds and walls. 1, your new concrete will need drying time, approx 1 month for every inch, then a DPM is required. Concrete floors subject to rising damp; New or old concrete floors where a DPM has failed or was never installed; Suitable for heavy wear areas; Use on areas of damp concrete which cannot be surface dried prior to painting; Features. 6mm is needed to provide a physical barrier. Once applied, it cures to form a flexible and elastic membrane that. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water. Before applying the damp proof paint, stir the contents of the bucket well. A decent fitter will test the slab for you before fitting anyway. Thread starter rifraf74; Start date 22 Feb 2007; R. How to install damp proof membrane on concrete floor. Safeguard offer two options for the treatment of damp rising through existing concrete floors. Damp proofing can also be integral when added to the concrete mix, the concrete itself water resistant. An ARDEX Damp Proof Membrane will protect the floorcovering. Virtually solvent free liquid epoxy resin damp-proofer. Description . After moving into a 1960s house we had a flood that started lifting old vinyl tiles under the carpet. Renders and Cured for min. Mapelastic AquaDefense provides a thin, continuous barrier to protect adjacent rooms and floors below from water damage. Which type of coating is chosen will depend on the intended use of the floor. DPM Membranes for Concrete Floors ; Damp Proof Course;. £2,000. Description. 99. If the coating is not for your final decorative surface. Installing a floor membrane on concrete to fight dampness is a relatively simple process, but getting it wrong can cause even more issues down the road. co. One of the last elements to be implemented was the asphalt floor screed which provides a membrane to the surface. it’s was very easy to work with, it had excellent adhesion to the concrete floor it was being applied to. RonaScreed DPM is a liquid applied surface damp proof membrane designed to reduce the passage of water vapour and allow the adhesion of thin bonded and fast drying screeds to concrete which is either not fully dry or does not have a functioning DPM. Liquid Damp Proof Membrane Hydraguard is a High Performance Primer. Learn More . Step-by-step guide for how to apply liquid DPM for concrete floors. Damp-proofing floors with damp-proof membranes is best done by professional contractors. The DPM we use does not cancel all moisture out as this will end up. of the floor. Test Area Because of the wide variety of possible substrates and site conditions, it is always advisable to check adhesion to the background by testing on a sample area before starting any job. Tax: £18. A damp proof membrane is primarily used on solid material floor constructions and it is designed to act as a waterproof barrier, preventing moisture from travelling into other. . Holds back rising damp where a damp proof membrane is either missing or defective. A liquid-applied damp-proof membrane (DPM) is a simple and effective solution for damp-proofing a concrete floor. 16 Nov 2016. Suitable for damp proofing concrete floors, foundations and masonry walls below, at or above ground level; Can also be used to protect retaining wall structures; Apply cold with a brushes for a cost effective and low labour application; For use on floors, 1st coat covers 1m²/litre and 2nd coat covers 1. We have had a damp survey and it is confirmed that there is no issue with rising damp. Property is mid 1960s, solid ground floor. Drybase White Liquid Damp Proof Membrane - 1L Drybase® Liquid applied DPM is a single pack barrier coating for above ground use. Concrete dries at a certain pace so it can perform at its best over the longest time possible, a liquid DPM can help you speed up things but not already after two weeks! Perhaps in the last two weeks of the normal drying time. Hi, We've just finished pulling up old quarry tiles ready to fit new Porcelain tiles throughout! Had to remove quarry's due to levels of external doors, were unsure what the subfloor is beneath the quarry's, I believe the property is prone to rising damp seeping through subfloor as no DPM. ARDEX DPM is a solvent free, low viscosity, two-component epoxy resin. Suitable for damp proofing concrete floors, foundations and masonry walls below, at or above ground level; Can also be used to protect retaining wall structures; Apply cold with a brushes for a cost effective and low labour application; For use on floors, 1st coat covers 1m²/litre and 2nd coat covers 1. Test scraping the floor it seems I can get all the ridges off quite easily, but inevitably, there will still be a bitumen stain on the concrete surface. Fix 50mm insulation to outside of frame. Hi, my name is Andy Parkin. Normally you would put a compacted bed of about 50mm sand under the DPM. DynamiteMatt; 17 Dec 2013; Floors, Stairs and Lofts; Replies 1 Views 1K. you cant put the dpm directly on to the. The DPM will be laid first, usually as a liquid product 'painted or trowelled' onto the concrete surface, then the screed laid over that. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint; Rising Damp Treatment; Water Repellents; Vapour Control Layers; Internal Waterproofing;. Any recommendation on products to use- most I've found say only suitable for concrete, I've only found multi tite 2k suitable for both but it's not cheap. Fierce Protection For Damp Floors. Tramex reading at the time of vinyl removal was 3-4+. Can be easily applied by brush. Drybase Liquid-Applied Damp-Proof Membrane High-strength damp-proof coating for a wide variety of applications. 64 Inc VAT. Epoxy Damp Proof Membrane Epoxy damp proof membrane is a coating that suppresses residual moisture in cement and concrete floors to speed up the process of installing floor coverings. We have had a full structural survey done which highlighted damp at the ground floor level. Clear and brush an area of a garage floor so that it is completely free from debris and dirt etc. By choosing the right product for your application and following the manufacturer’s instructions carefully, you can enjoy peace of mind knowing that your concrete floors will. Now, cut a small square of plastic (approx. Resistant to frost and salt attack. When using as a liquid DPM make sure the substrate is load-bearing, and that any laitance is removed mechanically (common on new concrete floors/screeds). 00 € 60. 2. Hi, I bought a new build last November, im just after a little info regarding whether to paint on a DPM or not? When the slab was poured back in June last year, the builder put in a dpm then insulation boards, radon protector thingy me bob , then more thick plastic sheeting, re bar/Mesh then the concrete was poured. If I put a damp proof membrane down first, like a paintable one like Wickes paintable bitumen or Drybase Dpm in white, would products like this work under self levelling compound?Wickes Bitumen Damp Proof Membrane Liquid - 25L (71) £80. I want to avoid digging it up if I can. How to install a liquid damp proof membrane you when to use a damp proof membrane wood and beyond blog how to lay a liquid based damp proof membrane you what is a dpm and why do i need one polycote. Drybase Black Liquid Damp Proof Membrane - 5L (0) £55 . Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. IN CONCRETE SUBFLOORS British Standards 8201:2011 recom-mends using relative humidity (RH) testing of concrete sub floors. After application, this polymer-based coating dries to a flexible liquid waterproofing membrane with high crack-bridging properties. To ascertain if this is the case, there are two main techniques for testing a substrate’s moisture level, which. Accommodates Hygrometer readings up to 98% RH. #1. If you have that problem, I don't think a damp-proof membrane on top of the concrete will help. Drybase Black Liquid Damp Proof Membrane - 5L (0)The DPM may be above or below the concrete and continuous with DPC in walls and piers (See Figure 1). 00 Excl. Add to Basket. We have had a damp survey and it is confirmed that there is no issue with rising damp. Step-by-step guide for how to apply liquid DPM for concrete floors. Apply sand-blind base (this base should be level to within 5mm along any 3m straight edge). the DPM and new floor can then go on top of this. Holds back rising damp where a damp proof membrane is either missing or defective. A DPM can be applied to either the top of the slab or beneath onto a concrete blinding. Hi. At DryCore , we have seen hundreds of cases like this and have helped clients to overcome the problem using various professional damp proofing methods. Prepare substrate. £. Cures in half the time of conventional epoxy based surface damp proof membranes. Use polyethylene sheeting to create a waterproof membrane to ensure that there is no leakage of the screed when it is pumped in wet. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. I'm looking to tile the floor, which currently has parquet on it, bonded to the concrete with a bitumen adhesive. It offers protection against a variety of problems associated with moisture ingress ranging from visible damp patches on walls and floors to salt damage, rot and mould. When mixed together and applied to a concrete surface it forms a barrier against the passage of water and is tolerant of residual moisture in concrete floors. Damp proof membrane Floor screed PIR cavity board Lay, level and compact the hardcore in layers (usually 150mm min / 250mm max). Basements: As part of a waterproofing system beneath ground level. KIAB Super Member. Oldroyd Xs Slimline Membrane is a damp-proof membrane commonly used on top of damp concrete floors or newly-laid floor slabs. Thanks for the response. The type of coating is chosen, depending on the usage of the floor. SikaBond® Rapid DPM Solvent Free Resin Primer and Damp Proof Membrane for Cement Based Substrates PRODUCT DESCRIPTION SikaBond® Rapid DPM is a single part moisture curing polyurethane. £9. • 5L tin offers coverage of approximately 6. Ground-bearing concrete floor slabs should be protected against ground moisture by providing a continuous damp proof membrane (DPM). The subfloor is a solid slab that is mostly level (although in parts, just earth). ARDEX DPM has excellent. Any joins in the damp-proof membrane should overlap by 300mm and sealed thoroughly with a waterproof adhesive. Mapelastic AquaDefense is a premixed, advanced liquid-rubber, extremely quick-drying waterproofing and crack-isolation membrane for installation under ceramic tile or stone in residential, commercial and industrial environments. Drybase Black Liquid Damp Proof Membrane - 1L (0)The DPM may be above or below the concrete and continuous with DPC in walls and piers (See Figure 1). Our water-resistant epoxy DPMs are an affordable and easy way to create a damp proof membrane on concrete flooring and prevent rising damp. If the coating is not going to be the final decorative surface and a floor covering will be applied afterwards then a ready-to-use latex-based coating, such as. See moreApply around the edge of the room using a paintbrush, and then use a pre-wetted short pile. Hold up the low end of the level until the bubble is in the middle and then measure the gap between the floor and the raised end of the level. Acts as a bonding agent for plaster and curing agent for concrete. As the brick shed was set on a concrete slab. Bostik's damp proof membranes provide essential moisture mitigation and suppression for subfloors, helping to protect your installation for years to come. £ 21. The underlay of the laminate flooring includes a thin plastic sheet that covers the concrete floor right up to the skirting. Like 2. You are. If a screed such as A38 or Topcem was used, this can reduce the drying time, and with A38 this can be just one day. 64 Inc VAT. These can adversely affect a concrete slab on grade. Drybase 2mm Plaster Membrane Mesh (2m x 20m) - Low-Profile Plaster Membrane For Use on Damp Walls. Resin Floor Coatings UK (RFC UK) offer floor and wall coatings, screeds, resin floor paints, primers, repair and cleaning products to the home and commercial markets. Location. Product benefits. Where the product is laid onto a concrete surface wh. Concrete floors subject to rising damp; New or old concrete floors where a DPM has failed or was never installed; Suitable for heavy wear areas; Use on areas of damp concrete which cannot be surface dried prior to painting; Features. 100% solids, high build coating; Virtually solvent free liquid epoxy resin damp-proofer; Withstands 98% RHTesting the Floor’s Moisture Level. She has ground water under the garage that comes through the concrete. If there is no dpm above the concrete floor a vapour control layer, such as polyethylene, should be placed between the. Self Leveling OverlayFind the overlay to meet your project's needs. Free from water and free from solvents, this primer allows for a trouble-free installation as no swelling of the wood is to be feared. It did not cause any problems before (I took off the old screed and tiled floor already). , 1/8 in. Isolates damp substrates for new floor finishes including carpets and laminated flooring. 00 Inc VAT. Virtually solvent free liquid epoxy resin damp-proofer. The principle of tanking is to provide a continuous waterproof barrier or membrane; this is created using either mastic asphalt or proprietary adhesive DPM. View all: Sika Waterproof Sealants. Add to basket. It can also be used on floors tanked with Sovereign Hey’di K11 when a vapour barrier is required. R. £. Plenty of cement/latex/fibre. Mapelastic AquaDefense provides a thin, continuous barrier to protect adjacent rooms and floors below from water damage. Anyway im considering applying a liquid DPM myself but i would like to know if its essential to remove skirting boards. Whilst scraping them I noticed a bitumen Smell and residue. Do I have a DPM? EDSDIY; 23 Jul 2020;Standard sand & cement screed, dries at approx 1mm per day, depending on variables. 3. Buildings have been dampproofed for years, a practice that used to be. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. Can be applied to damp surfaces. Odourless, rubber-enriched bitumen emulsion. The product is applied in two coats. (3 Reviews) £22. Where traditional pressure injection fluid cannot be used, Dri-Wall is the answer. I plan to tank the walls too, but want to know if I should treat the breeze block walls with a chemical DPC first?. 3. 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. How do Liquid DPMs work? RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer. DIYDave. Chimney damp proof course (labour and scaffolding not included) £75 per roll. This water-based compound can be applied to damp concrete floor slabs, screeds and walls. Browse damp-proof membrane products from Toolstation here. Stauf VPU-155 S DPM solvent free polyurethane primer: is a ready-to-use, one component polyurethane primer is particularly fast drying. If the DPM Primer is being used. other floor coverings including tiles, vinyl, wood and ca. The bitumen is less than a millimetre thick - painted on by all accounts. This can only normally be guaranteed if its an new build or extension and most houses have been sold, inherited etc. 18 Dec 2013. Synthaprufe Original exhibits low odour, with exceptional flexibility and crack resistance, even at low. • Weatherproof protection for walls, above-ground structures and foundations. The screed is laid on top of a brand new flooring system (the concrete slab itself had a month to dry out before anything put on top). RAISED ACCESS FLOOR A tough waterproof. I'm looking for opinions on the best self leveling screed to use on my slightly wonky concrete garage floor. How does a Liquid Epoxy Damp Proof Membrane work?I don't know anything about using damp-proof membranes. . EP40 Epoxy Floor Coating – Grey. Liquid DPM and waterproofing paint to waterproof and damp proof your property. The Resin Flooring Association (FeRFA) guidelines stipulate that a DPM will be required if there is more than 4 grams of water per cubic centimetre passing through the substrate in a day. Would that be ok or would it sink?. Holds back rising damp where a damp proof membrane is either missing or defective. After nearly a year the smell had still not gone. The concrete slab I poured for my utility room extension is slightly uneven - a small dip into the centre. I'm not sure if the damp has risen through the concrete, or just moisture that has got trapped underneath. BAL DPM is resistant to water, chemicals, grease and pollutants, and can be used internally or externally either as a DPM, primer, waterproofer or residual m. After application, this polymer-based coating dries to a flexible liquid waterproofing. P. A two-component epoxy resin membrane known as a liquid epoxy damp proof membrane (DPM) is especially made to be applied to damp floors in order to create a barrier between your floor and the layer below. £300. for above ground use. Thin Micro-ToppingProduces durable surface to color or stain. The floor is also damp, which I am going to treat with a liquid DPM. Small hole dug through 2" soft sandy concrete to reveal hardcore and soil. 4M X 5M 500G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. ARDEX DPM accommodates hygrometer readings up to 98% RH. Suitable for all areas of a home, DPM is available in a choice of fabric and liquid forms. Coverage: A minimum dried coating thickness of 0. Barcode 5055047210603. You may need to apply a damp-proof epoxy coating to the concrete before laying a new floor. 00 Inc VAT. Ready to use. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Internal or external applied waterstops based on PVC, TPO or galvanised steel for construction and movement joints. Now you are ready to lay the damp-proof membrane. NDC 1200 Gauge Blue Damp Proof Membrane - 4 X 5m (75) £28. Floors, Stairs and Lofts. The product can also be used to protect retaining wall structures. There should be a damp proof membrane under the concrete slab already, but it might be damaged if there is moisture on the slab. Applications: Floors. F Ball DPM F77Be careful as some of those types of tiles contain asbestos. The most common type of DPM is installed during the building process. Good afternoon. coating to create a key for the screed. £10. Manufacturers will be able to advise. The membrane is a tough structural material and is often used as part of basement waterproofing solutions too. Isolates damp substrates for new floor finishes including carpets and laminated flooring. may then be applied. Wait until the first coat of liquid DPM is touch-dry - approximately 15 to 30 minutes at 20°C – before applying the second coat at right angles to the. Damp proof for concrete floor. Hi I have just put a Liquid Damp Proof Membrane (A rubberised bitumen based emulsion that provides a flexible and resistant barrier from Wickes) over a concrete floor but now i'm not sure if I can tile over it. We stock a range of 1200 gauge DPM membranes to protect properties against moisture in the ground. From the mid 1960s to the mid 1990s a typical concrete floor comprised a layer of hardcore, a polythene damp proof membrane laid on a thin bed of sand (to prevent puncturing), and a floor screed. You can buy self-levelling floor screed compound from any DIY store. Adheres to saturated concrete even at lower temperatures. Country. Damp proofing is typically achieved through a coating that is either sprayed on or rolled onto the outside of the wall. If it’s solid wood you need a surface dpm. DPM Floor Membranes. How To Install Damp Proof Membrane on Concrete Floors. Universal DPM allows immediate installation of moisture sensitive floor finishes onto damp concrete and screed. 1. £1. I have a friend who has a concrete floor in her garage. • Protects walls and floors from water ingress and dampness. BBA certified - third party accreditation. #3. I have a friend who has a concrete floor in her garage. 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. 70 Ex VAT. 5 Best Dpm For Concrete Floor In the UK Last Updated - 05/11/2023 Our rankings are cleverly generated from the algorithmic analysis of thousands of customer reviews about products, brands, merchant’s customer. Drybase ECS Epoxy Floor Coating can be used as a liquid damp-proof membrane (DPM) for floors and. Drybase Liquid-Applied DPM is a single-component two-coat paintable damp-proof coating that is easily applied to substrates by brush, roller, or spray. Form some haunching on the 50mm flat, to create slope. 1. Liquid Epoxy Damp Proof Membrane - 5kg. apply two coats of Drybase® Liquid-Applied DPM as normal. ARDEX DPM 1 C R can be applied to give a dry film thickness of 250 microns where all surface. The type of coating is chosen, depending on the usage of the floor. Buy great products from our damp proof membrane Category online at Wickes. Can be applied to damp surfaces. The Drybase range of liquid-applied coatings including Drybase ECS Epoxy Floor Coatings and Drybase Liquid-Applied DPM can be applied directly to damp floors to create a damp-proof barrier without raising the floor. PRODUCT CODE: SDH0931. Thick, flexible coating resists movement and minor cracks. It is supplied ready to use. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. Cavity wall with bitumen dpc. BAL DPM is resistant to water, chemicals, grease and pollutants, and can be used internally or externally either as a DPM, primer, waterproofer or residual m. Where traditional pressure injection fluid cannot be used, Dri-Wall is the answer. I removed the old carpet and realised there was damp patches on the tiled floor below, im believe there is no dpm membrane and quarry tiles were laid over lime morter bed, my contractors PVA'ed self levelled over the floor to try and stop it but the self. Due to the Breast wall settlement we pulled up the boards in the living room to use self levelling. 40 per m 2 . SBR diluted mix over bitumen, 2 coats, follow instructions on tub, likely 1-4 ratio with water, 1st coat front to back, 2nd coat side to side (if that makes sense) Wickes sell a 1tr SBR whereas usually only available as a 5lt. Mapelastic AquaDefense is a premixed, advanced liquid-rubber, extremely quick-drying waterproofing and crack-isolation membrane for installation under ceramic tile or stone in residential, commercial and industrial environments. 6mm is needed to provide a physical barrier. Two coats will provide protection up to a maximum hygrometer reading of 95% RH. Laying new floor - needs DPM? dunroving Posts: 1,881 Forumite. A decent fitter will test the slab for you before fitting anyway. Add to basket. Made from recycled materials. £ 60. This can be due to: Moisture rising through the concrete. Keep below grade excavations free of water to prevent potential reservoirs of moisture that can migrate upward through slabs. Developer has quoted £3744 for approx. Applying Damp Proof Membranes. Ready to use, effective damp proof membrane. Property is mid 1960s, solid ground floor. It is laid on top of a subfloor to keep moisture at bay and ensure natural timber. Radon gas barrier installation. £4. Pour the resin into a clean, dry bucket. DIYDave. The membrane can support a 65 mm screed or an insulated floating floor. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. This prevents moisture from the screed attacking the wood flooring and ultimately ruining it. Thanks for the response. A range of high quality DPM membranes from Capital Valley Plastics, designed for use with solid concrete slabs. • Weatherproof protection for walls, above-ground structures and foundations. Another solution for. 25 Ex VAT. Tape joints. You also mentioned that there are vinyl tiles over the floor. uk. Can be over painted after 16 hours with most types of floor coatings. Quarry tiles are installed on the solid concrete slab which is a good. If you would like to know more about the range of damp proofing and other products we have available you can contact us on 01329 235252 or via e-mail info@allianceremedialsupplies. Developed to suppress residual construction moisture in cementitious subfloors including power floated concrete and sand/cement screeds. 5 Litre Containers, in Black colour only. One Abocrete kit with sand covers approximately 28 sq. It can also be used as an adhesive for the likes of wood block flooring and insulation boards, or as a plaster bonding agent – even on difficult surfaces. If it’s solid wood you need a surface dpm. I applied this to the floor in two coats. While it may seem unconventional to "paint" a concrete floor, it creates a highly durable and impenetrable barrier against moisture. liquid dpm and self levelling compound. or self level to adhere to. Our costs are ballpark averages – get a local tradesperson to quote now. Excessive moisture below concrete slabs can cause structural degradation of soil bearing strengths, and swelling and shrinkage of soil. The best solution is to uplift the tiles and dispose of accordingly, then use a specialist screed such as F-Ball Stopgap 1200 straight over the bitumen. The damp surveyor has identified the laminate flooring as a possible cause. The vinyl being laid before the concrete has dried out. dazlight. Impatience and damp concrete subfloors. The process. Isolates damp substrates for new floor finishes including carpets and laminated flooring. 11. Wait until the first coat of liquid DPM is touch-dry - approximately 15 to 30 minutes at 20°C – before applying the second coat at right angles to the. Up to 10 years warranty on selected items. 5 m²/litre Liquid epoxy DPM is often used as a remedial solution for existing concrete floors, as it creates an impermeable layer that keeps water in the concrete slab. £49. It is supplied ready to use. To ascertain if this is the case, there are two main techniques for testing a substrate’s moisture level, which. Drybase Liquid-Applied DPM is water-based. But these started to fail due to the 131 primer breaking down after a while. How to apply Damp Proof Paint. Epoxy Damp Proof Membrane Epoxy damp proof membrane is a coating that suppresses residual moisture in cement and concrete floors to speed up the process of installing floor coverings. RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer.