IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. 40 per m 2 . rifraf74. Once the DPM is applied you need a laytex screed, so your adhesive and karndean stick to it. £. In particular, this can include permanently damp concrete floors or where the DPM (Damp Proof Membrane) is. It is supplied ready to use. Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. I don't want to puddle any DPM into these holes but does anyone know the best way I can 'fill' them before putting down the DPM. Ideally, and for total peace of mind, you should try and achieve the recommended moisture levels and use a damp proof membrane or vapor barrier. Consideration should be given to applying the DPM to the top of the slab, as the installation and moisture sensitive internal finishes are then protected from any residual moisture in the concrete. Drybase Liquid-Applied DPM, Drybase ECS Epoxy Floor Coating, and many products from the Vandex range including Vandex BB75 and Vandex Unimortar 2 can be applied directly on to damp floors to form a damp-proof barrier. £51. 12 Inc VAT. You can buy self-levelling floor screed compound from any DIY store. #1. Showing 1–15 of 21 results. One solution is to dig up the floor and replace the existing damp proof membrane with a new plastic membrane then relay the concrete slab. 64 Inc VAT. Anyway im considering applying a liquid DPM myself but i would like to know if its essential to remove skirting boards. Using pin m/m's on a concrete or s&c screed floor needs experience - more important is what is the composition of the slab or the in-situ screed and if there is an actual DPM below the floor. 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. Installing tanalised 4x2 soleplate 2" from the wall over the DPM but with a DPC below, screwing down through both into the concrete, then bringing the DPM up the back of the soleplate for a nominal distance. You are. Drybase Liquid-Applied DPM is water-based. . 5. Using this latex based damp proof paint as a damp p. The polythene damp proof membrane (DPM) – generally a 1200 gauge- can now be rolled out into place ensuring the perimeter abutments are adequately covered. The product is applied in two coats. 2kg/m². £1. #2. 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. If a DPM has failed or perhaps was never installed in the first place, the features. Coo-Var Dampshield. When damp proofing a concrete garage floor, a plastic dimpled membrane is required if the floor is going to be boarded (either with chipboard, plywood or similar) or if a concrete screed is going to be laid. Coverage: A minimum dried coating thickness of 0. Oldroyd Xs Slimline Membrane is a damp-proof membrane commonly used on top of damp concrete floors or newly-laid floor slabs. Now, let’s clarify some things concerning product. 2. £2,000. Robust - resistant to on site damage. Now, cut a small square of plastic (approx. Easy Handling & Installation. Mix. How to do Damp Proof Membrane of your sub-floor. Step-by-step guide for how to apply liquid DPM for concrete floors. I went to buy compound to level it yesterday, and now it looks nice. 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). Drybase Black Liquid Damp Proof Membrane - 5L (0) £55 . attack but is designed to be over-coated with other resin finishes. Self levelling compound. The. Fierce Protection For Damp Floors. 3mm per dried coat) This corresponds to approx 1. Concrete ground floor. I am decorating a rear lobby area of an old victorian terrace house, which has a concrete floor. Use a Vapour Barrier Membrane or Damp Proof Membrane. A surface DPM, which bonds to the surface of the concrete, minimises moisture vapour transmission. If the problem is moisture, lift the vinyl and allow the concrete to dry properly. co. weberfloor DPM can be applied on substrates such as concrete and cement-based levelling compounds. Using this latex based damp proof paint as a damp p. When laying radon membranes, they should extend the whole of the floor and walls. It might seem a bit unusual. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. At Permagard, we stock the Radbar radon membrane. Description. 5m) It will have 50mm insulation boards on top of it, followed by 18mm/22mm. DIYDave. #1. then a liquid membrane goes over this called ardex dpm 1c. Suitable as a damp proof membrane on solid concrete floors. It helps stop moisture passing from one to the other. A decent fitter will test the slab for you before fitting anyway. Liquid DPM for concrete floor as a rising damp treatment. It is true that a 100mm concrete screed will take around three and a half months to dry out (1mm per day) depending on time of year, whether a dpm or insulation was laid underneath etc, so it's a guesstimate !! In our game, dry actually means moisture levels are less than 75% so your concrete floor is only 25% dry and will release moisture for. The wall is now down and its time to level off the floors. What is a Liquid Epoxy Damp Proof Membrane? Liquid Epoxy Damp Proof Membrane has two components - a base and hardener. For application onto concrete and cement based substrates; Suppresses the passage of residual construction moisture up to 98% RH when full coverage is achieved ; Capable of. Dryzone Anti-Mould Additive - 100ml. Damp proofing can also be integral when added to the concrete mix, the concrete itself water resistant. Applied by brush or roller to provide protective coating that can easily be cleaned. USES For priming, consolidating and sealing of: Absorbent and non-absorbent sub-floors, consolidat-ing weak cement screed and isolation of old adhesive residues. If you lay a liquid dpm, you need to cover the walls as well, for the same reason. £. 1. This is where a damp-proof membrane (DPM) is put into use; essentially a large sheet of polythene, bituminous felt or copper sheet which should be placed between the concrete slab and the screed. 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. £7. Stauf VPU-155 S DPM solvent free polyurethane primer: is a ready-to-use, one component polyurethane primer is particularly fast drying. 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. Apply prior to laying laminate or wooden flooring, over wall-to-floor junctions. Odourless, rubber-enriched bitumen emulsion. link with wall DPCs to form an impervious barrier to prevent moisture reaching the interior of the dwelling. The only way to tell properly, is to carry out a proper test. 3. Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m (47163) (55) compare. ARDEX DPM is a solvent free, low viscosity, two-component epoxy resin. 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. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. Drybase Black Liquid Damp Proof Membrane - 1L (0) £22 . The membrane is a tough structural material and is often used as part of basement waterproofing solutions too. See moreApply around the edge of the room using a paintbrush, and then use a pre-wetted short pile. Can damp come up through a concrete floor? The easiest issues to isolate and fix with damp floors are problems with above. you cant put the dpm directly on to the. Small hole dug through 2" soft sandy concrete to reveal hardcore and soil. 6 m2 1. € 120. The existing concrete floor can be used as a base, however a new damp proof membrane (DPM) will need to be introduced. 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). Browse our selection of damp roof membrane (DPC) for use on concrete to prevent moisture from seeping through layers of flooring. Apply sand-blind base (this base should be level to within 5mm along any 3m straight edge). Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. Basements: As part of a waterproofing system beneath ground level. About this product. A: A damp proof membrane (DPM) is a thick plastic sheet used as a waterproof barrier between a concrete subfloor and wood floor. After hardening the ARDEX DPM produces a membrane with high inherent strength and excellent bond strength to appropriate substrates including very damp concrete and screeds. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. Liquid Damp Proof Membrane Hydraguard is a High Performance Primer. e 0. Tape joints. 00. How To Install Damp Proof Membrane on Concrete Floors. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water. DynamiteMatt; 17 Dec 2013; Floors, Stairs and Lofts; Replies 1 Views 1K. They are durable and puncture resistant, being able to cope. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. The DPM we use does not cancel all moisture out as this will end up. Alternatively, liquid DPM solutions based on reaction resin systems which can be applied on top of the substrate to control moisture up to 98% RH. 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). Prepare substrate. Clean quarry tiles. 60 per L. free from dirt, dust, grease or other contamination or coating. Add to basket. Isolates damp substrates for new floor finishes including carpets and laminated flooring. merit said: ↑. Liquid epoxy DPMs are ideal for concrete floors, such as garages, where the original damp proof membrane is missing or has broken down. Say on quarry tiles or a rough surface screed/concrete floor ? They used to say 131 primer and then 200 acrylic. Where the product is laid onto a concrete surface wh. PRODUCT DESCRIPTION EVERBUILD® BLACK JACK® 908 D. I am assuming its asphalt with a bitumen top layer, 10-15mm thick. This can include timber floors, tiles, laminate flooring and carpet. 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. Hardcores varied in quality - many have since proved to be totally unsuitable. Suitable for internal. 100m² per roll. Whilst this is not ideal, it can be a low-cost solution, which is easier than restoring old tiles, or completely digging out and relaying a new floor. 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. It should accommodate 0mm to 5mm (or thereabouts) It will cover an area of 26m2 (4m x 6. 00. Laitance must also be removed from concrete. Can be used where a structural DPM is not present or is ineffective. An insulation foam board needs to be laid directly on top of the concrete floor. , Jan 22, 2021. I would think a strip out and start again would be your best option, you should consider where/why there is water evident before. Prepare substrate. Withstands reverse hydrostatic pressure to 4. However, this option may not be the best solution in many circumstances. • Protects walls and floors from water ingress and dampness. A few months have passed since then and is now on average 2. So I have a concrete floor in the kitchen (concrete - DPM - 50mm screed), knocked through into the outside toilet which just had soil floor. Ask the mods to move your thread to Flooring forum and see: dazlight Fri 29 aug 2020 for a specific response to a difficult surface. I'm looking to tile the floor, which currently has parquet on it, bonded to the concrete with a bitumen adhesive. The whole floor is concrete and has a section about an inch deep where the fireplace used to be. Coverage: A minimum dried coating thickness of 0. £9. Add to basket. ARDEX DPM 1 C. Very cost effective single coat application reducing time on site. Book here your free consultation followed by a free. £ 60. After moving into a 1960s house we had a flood that started lifting old vinyl tiles under the carpet. All tiles and sand cement screed removed and last remaining suspect area. 25 Feb 2006. We have had a full structural survey done which highlighted damp at the ground floor level. 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. Use 1000 gauge or thicker – ideal for this is the polyethylene use for the DPM under your concrete subfloor. 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. If there was no dpm I would suggest a uniformal distribution across the whole floor. 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 applied in the same manner as ordinary emulsion paint with the added benefit of application in damp conditions. Call us on 302 244 0179 or submit an enquiry for contact information of contractors in your area. This Epoxy DPM is a two-component, solvent free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. 10cm squared) and tape it to the floor. As a result, it’s important, particularly if you’re planning a DIY installation, to ascertain the best way to fit your floor. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. If the top of the plastic is wet and the concrete underneath is dry, then you have a sweating. 99. Ready to use, effective damp proof membrane. Internal or external applied waterstops based on PVC, TPO or galvanised steel for construction and movement joints. Hi, Just about to put a liquid DPM down on a concrete floor. 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. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. 186. dried sand broadcast into the wet. I'm looking for opinions on the best self leveling screed to use on my slightly wonky concrete garage floor. I plan to tank the walls too, but want to know if I should treat the breeze block walls with a chemical DPC first?. The epoxy DPM comes. Browse damp-proof membrane products from Toolstation here. If a DPM has failed or perhaps was never installed in the first place, the features. Floors, Stairs and Lofts. Indoor and outdoor use. The product definitely gets the job done with great value for money. Click & Collect. weberfloor DPM can be applied on substrates such as concrete and cement-based levelling compounds. I need it for another job so would this work the same as DPM on a small concrete floor under vinyl? glob@l, May 17, 2019 #3. DPMs come in solid or liquid form, the latter being a practicable solution for a garage conversion. 00 Ex VAT. Liquid DPM to reduces the potential mois-ture related problems. co. Looking lay a liquid dpm in the cellar floor followed by a self levelling compound as it uneven. 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. We have had a damp survey and it is confirmed that there is no issue with rising damp. Apply prior to laying laminate or wooden flooring, over wall-to-floor junctions. I need it for another job so would this work the same as DPM on a small concrete floor under vinyl? glob@l, May 17, 2019 #3. She has ground water under the garage that comes through the concrete. Ideal for floors with damp or rising damp problems. Damp proofing concrete floors isn't terribly difficult, although it can be time-consuming and confusing. The dpm resin, is a sticky gooey 2 part epoxy based liquid to be precise. • Weatherproof protection for walls, above-ground structures and foundations. Single Sided DPM Tape - 75mm x 33m. 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. Walls appear to be dry & are mainly concrete block. Cromaprufe Bitumen DPM is a cold applied rubberised bitumen emulsion and damp proof paint that dries to provide a tough, black flexible coating that provides a waterproof membrane on concrete and brick foundations, retaining walls and bridge abutments. Thin Micro-ToppingProduces durable surface to color or stain. Choosing a damp proof membraneLiquid dpm on concrete floor with no dpm. It did not cause any problems before (I took off the old screed and tiled floor already). Learn More Epoxy Flooring. Use on concrete floors as an alternative to polythene. 6mm is needed to provide a physical barrier. I'm hesitant to lay self levelling. If a DPM has failed or perhaps was never installed in the first place, the features. Once dried Water Based Epoxy leaves a tough, non-toxic, waterproof, easy to clean surface. Cures in half the time of conventional epoxy based surface damp proof membranes. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. And yes you can level the floor after. Excessive moisture below concrete slabs can cause structural degradation of soil bearing strengths, and swelling and shrinkage of soil. Add to Basket. 5L. Once applied via a roller the compound creates a barrier between the concrete and wood flooring. Features. It is not suitable as a bond. 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. Preparation is the main thing for the layers, and the substrate should be dry and clean. i try to keep up on new products and a company called ardex uk make a latex based levelling compound called (arditex na)that goes straight over bitumen to seal it. Drybase BBA Tanking Slurry - 25kg. Applications: Floors. She has ground water under the garage that comes through the concrete. 100% solids, high build coating. Larsen DPM Universal is a superior 2 pack epoxy surface applied liquid damp proof membrane that enables laying of flooring even where moisture levels are at their highest up to 98% RH. An MVS, is a moisture vapour suppressant that is used on floors, usually concrete or cement-based screeds with up to 95% RH. BS recommends (Annex A) hygrometer test which should give a reading of not more than. ARDEX DPM has excellent. It is true that a 100mm concrete screed will take around three and a half months to dry out (1mm per day) depending on time of year, whether a dpm or insulation was laid underneath etc, so it's a guesstimate !! In our game, dry actually means moisture levels are less than 75% so your concrete floor is only 25% dry and will release moisture for. High performance, over-banding sealing tape system for postsealing and waterproofing of construction. dazlight. £30. To use an MVS, there must be a fully functioning structural DPM in. The product is applied in two coats. This barrier is intended to stop moisture passing from one to the other. In this video I apply a damp proof membrane / tanking slurry to a concrete floor to stop moisture coming in to the building where we have issues with mould a. When installing an underlay process, roll out the damp-proof membrane the same way you do a carpet and cut to size. This water-based compound can be applied to damp concrete floor slabs, screeds and walls. I applied this to the floor in two coats. Liquid Damp-Proofing Systems. However, there are a couple of small holes (about 4cm deep, 2 x 3cm width/length) in the concrete base. Damp Proofing. Description . It stops around 10mm away from the internal walls in all rooms. 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. We have purchased a 4 bed detached house built in the 1950's. £107. A decent fitter will test the slab for you before fitting anyway. Where traditional pressure injection fluid cannot be used, Dri-Wall is the answer. 00 Ex VAT. Getting someone to do a damp test to find out the relative humidity RH% of. 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. 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. It should accommodate 0mm to 5mm (or thereabouts) It will cover an area of 26m2 (4m x 6. 100% solids, high build coating; Virtually solvent free liquid epoxy resin damp-proofer; Withstands 98% RHTesting the Floor’s Moisture Level. Drybase Liquid-Applied Damp-Proof Membrane High-strength damp-proof coating for a wide variety of applications. 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. ft. DPM Membranes for Concrete Floors . Category: Floor Treatment Tags: Damp Proof Membrane, Damp Proofing. Since 1991, Polycote have laid millions of square metres of epoxy floor paints and coatings in almost every environment throughout the UK. It should be waterproof to prevent any rising damp getting through. Our liquid waterproof membrane is a liquid DPM that makes your floors durable and water-resistant. T ·Öà 4. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. If you have a engineered wood floor and your new slab is dry below 75%rh then technically you don’t need one. Basement Tanking. If the coating is not going to be the final decorative surface and a. General waterproofing: - for use on concrete,Information Liquid Waterproof Membrane. underneath a screed or self level we. Synthaprufe Original exhibits low odour, with exceptional flexibility and crack resistance, even at low. It is available in black or white with a consistency similar to that of thick emulsion paint. Moisture-sensitive floorings including timber-based flooring panels (particularly those of chipboard) can be seriously disrupted or damaged by water vapour arising from moisture within the floor construction. of the floor. Virtually solvent free liquid epoxy resin damp-proofer. The biggest advantage of using a liquid Damp Proof course, is that you do not have to rip up concrete floors. In this video I apply a damp proof membrane / tanking slurry to a concrete floor to stop moisture coming in to the building where we have issues with mould a. DPM is also suitable as anThis is where a damp-proof membrane (DPM) is put into use; essentially a large sheet of polythene, bituminous felt or copper sheet which should be placed between the concrete slab and the screed. Withstands 98% RH. Test Area CoverageTwo-component, single coat application, damp proof membrane for controlling residual and constructional moisture in cementitious substrates. Broom Overlay Mix 6000 PSIAdd water and mix - Grey or white. Suitable for the damp proofing of interior masonry wall surfaces. merit said: ↑. Damp proof membranes can be used to help resolve damp issues which already. Buildings have been dampproofed for years, a practice that used to be. After nearly a year the smell had still not gone. Tanking should be provided wherever a floor level is below ground level. These products are relatively simple to apply, although significant surface preparation work is usually required. Damp proofing is typically achieved through a coating that is either sprayed on or rolled onto the outside of the wall. 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. This barrier is intended to stop moisture passing from one to the other. Drybase Liquid-Applied DPM is water-based. If you need some advice on what DPM your floor project will require you can speak to one of our flooring experts using the live chat (when available) or call us on 0333 533 3330 during normal office hours. DPM’s can be applied to either a suitable blinding layer under the slab or internally to the top of the slab. Sika Rapid DPM is intended for priming and sealing absorbent and non-absorbent subfloors, Also suitable for. Rapid Set Skim CoatRepairs, levels, and smooths concrete for applications. House built in 60's. Depth of screed. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. The kitchen currently has thermoplastic tiles down which most. Whoever. An ARDEX Damp Proof Membrane will protect the floorcovering. An advanced, ready-to-use, chemical damp proofing formula which forms an effective. £3. IKOpro Synthaprufe Original is a BBA Approved (cert no. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint; Rising Damp Treatment; Water Repellents; Vapour Control Layers; Internal Waterproofing;. Many damp-proof floor coatings are used directly on the concrete floor surface with a roller or brush. Hi there. Preparation is key with these coatings and the substrate must be sufficiently clean and dry. • Protects walls and floors from water ingress and dampness. Holds back rising damp where a damp proof membrane is either missing or defective. thick. Once the floor is even it should be completely cleaned. 01/12/2021. Liquid damp proof membrane can be applied to both floors and walls using various methods such as brush, roller, or spray. P. How to install a liquid damp proof membrane. . The product can also be used to protect retaining wall structures. If there was no dpm I would suggest a uniformal distribution across the whole floor. 00. Ready for your floor finish. All surfaces must be mechanically sound, dry and clean, i. Liquid DPM 5L Rating: 100%. This can be due to: Moisture rising through the concrete. Also there is less likely to damage the components of the floor makeup at this stage over placing them at foundation stage with regular concrete. Damp-proof membrane is used to protect buildings from moisture by creating a damp resistant barrier. DPMs can also be used to form. Whether you need to cure a damp concrete floor with a liquid DPM or paint your garage we have a specialist paint product fit for purpose. 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. 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. Technoseal Damp Proof Paint is a ready to use, SBR based, liquid damp proof membrane (DPM) which provides a seamless barrier against water penetration, radon, gas. £10. 100% solids, high build coating. Suitable for extensions, basements and cellars. Quarry tiles are installed on the solid concrete slab which is a good. Leave it overnight. Mapeproof One Coat is used on cementitious floors with residual or constructional moisture levels of above 75% RH and below 97% relative humidity prior to the installation of resilient floor coverings. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. I wanted to self-level the floor using mapai ultimate leveller 1210 and Secrete Ulitmate Primer for adhesion. Most damp-proof floor coatings are applied directly to the concrete floor surface using a brush or roller. R. 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. Drybase Liquid Damp Proof Membrane (5 Litre, Black) - Damp. Lay the damp proof membrane (DPM) (normally 1200g polythene sheet/300g micron or a radon barrier if specified),If you have a concrete slab below the level of the dpc in the wall, if you raise it over the dpc you will bridge the dpc in the wall, so allowing damp to get into the wall. Produced from Recycled Material. When laying a solid wood, Real Wood or laminate floor over a cement-based sub-floor, a paintable damp proof membrane should be used to prevent moisture penetrating from below. 99. MPN SKBDRAPDPM5. ft. Limelite Easy Bond 5kg - Breathable Primer £55. BBA certified - third party accreditation. Liquid epoxy DPM for existing concrete floors. Suitable for extensions, basements and cellars. £. 00 Inc VAT. £6.