This water-based compound can be applied to damp concrete floor slabs, screeds and walls. Prevents rising damp and efflorescence. Before applying the damp proof paint, stir the contents of the bucket well. Thin Micro-ToppingProduces durable surface to color or stain. Buy great products from our damp proof membrane Category online at Wickes. If you have a engineered wood floor and your new slab is dry below 75%rh then technically you don’t need one. 0. Drybase Black Liquid Damp Proof Membrane - 5L (0) £55 . Many damp-proof floor coatings are used directly on the concrete floor surface with a roller or brush. weberfloor DPM can be applied on to concrete or cement based screed. weberfloor DPM can be applied on substrates such as concrete and cement-based levelling compounds. We have had a damp survey and it is confirmed that there is no issue with rising damp. 2kg/m². Suitable for extensions, basements and cellars. I would. You also mentioned that there are vinyl tiles over the floor. Tape joints. 100% solids, high build coating. Browse damp-proof membrane products from Toolstation here. 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. Limelite Easy Bond 5kg - Breathable Primer £55. Add to basket. Visqueen High Performance Damp Proof Membrane. 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). External wet concrete should be allowed to dry thoroughly or sealed with one coat of ARDEX HydrEpoxy WPM 300 as above. rifraf74. 10cm squared) and tape it to the floor. This water-based compound can be applied to damp concrete floor slabs, screeds and walls. , 1/8 in. Waterproof. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. 3. is a rubber en-riched bitumen emulsion which provides a highly ef-fective sandwich damp proof membrane for floors. One thought is to plug it at the junction under the draincover and then screed round it, and lay floor over; then it can be reinstated in future if ever needed. A: A damp proof membrane (DPM) is a thick plastic sheet used as a waterproof barrier between a concrete subfloor and wood floor. Basement Tanking. £107. Shop for waterproofing products & vapor barriers designed to protect your foundation. I'd like to put a bit of self levelling compound down so the insulation is evenly supported. All laps and joints should be at 150mm and taped to avoid displacement. Blue 1. Once applied, the product cures to form a membrane that is flexible and elastic. 4. 7am-8pm Monday-Friday, 7am-6pm Saturday . It had infact penetrated everything in the room. Isolates damp substrates for new floor finishes including carpets and laminated flooring. On average, the cost of screed flooring will be around the £250 mark, depending on various factors. Temperature, air flow and type of mix, being just a few. I'm looking to tile the floor, which currently has parquet on it, bonded to the concrete with a bitumen adhesive. Vapour barriers. Old pre 1960's house with a concrete ground floor. Wykamol Technoseal DPM Damp Proof Paint. Wall and floor moisture barrier. 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. advise that you apply one coat of DPM. The existing concrete floor can be used as a base, however a new damp proof membrane (DPM) will need to be introduced. Virtually solvent free liquid epoxy resin damp-proofer. 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. The DPM should: have sealed laps of at least 300mm wide. DPM is also suit-able as an adhesive for wood block and mosaic panels, insulation boards, expanded polystyrene, cork and as a plaster bonding agent, even on difficult surfaces. 186. Pour the resin into a clean, dry bucket. This should be laid on top of the insulation board. The report says there is no DPM. Damp Proofing. #1. Liquid DPM is a substance used to create a waterproof layer on the walls and floors in your building to help stop moisture and rising damp from penetrating the foundation and. A decent fitter will test the slab for you before fitting anyway. Use a Vapour Barrier Membrane or Damp Proof Membrane. The vinyl that was laid bubbled up, so contractor removed it. These attributes combined produce a unique multi-purpose liquid DPM with dozens of potential applications including but not limited to: • Damp proofing storage basements, where other tanking methods too costly • Damp proof paint for walls and ceilings • Concrete Floors: as a tough liquid floor DPM applied above or below screeds. 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. It is low odour, solvent free, and most importantly deals with constant low levels of moisture in concrete floors. 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. The only way to tell properly, is to carry out a proper test. DIYDave. Damp proof membranes can be used to help resolve damp issues. Add to basket. I plan to tank the walls too, but want to know if I should treat the breeze block walls with a chemical DPC first?. Can be used as a damp proof membrane and as part of a designed structural waterproofing system. 4M X 5M 500G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Pour the resin into a clean, dry bucket. I am assuming its asphalt with a bitumen top layer, 10-15mm thick. 49 Inc Vat. Thanks for the response. I wanted to self-level the floor using mapai ultimate leveller 1210 and Secrete Ulitmate Primer for adhesion. The membrane should be linked to the DPC/cavity tray. Laitance must also be removed from concrete. ) 4. It is supplied ready to use. The product is applied in two coats. ft. Prepare substrate. 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. . A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. The membrane is a tough structural material and is often used as part of basement waterproofing solutions too. 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. The DPM above concrete should be protected by either screed or a floor finish unless it is a material that can serve as floor finish. Damp Proof Course 500mu 100mm x 30m £2. I have a friend who has a concrete floor in her garage. A damp proof membrane (DPM) is used to create a barrier between a concrete (or screed) subfloor and the floor covering that is laid on top such as wood,. There is a distinct difference between dampproofing and waterproofing. P. 100% solids, high build coating. case of un-bonded screeds. ARDEX DPM has excellent. £300. Walls: Can be used under render or plaster as a water barrier or. Damp-proofing floors with damp-proof membranes is best done by professional contractors. Holds back rising damp where a damp proof membrane is either missing or defective. co. £36. 100% solids, high build coating. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. MPN SKBDRAPDPM5. the wooden floor is laid. A few months have passed since then and is now on average 2. £36. Available in 5 Litre and 22. Withstands 98% RH. 5%CM (~ 4% Tramex) for a concrete subfloor indicates that a suitable damp-proof membrane must always be installed – either a 2 coat/2 part liquid layer (e. 6. Drybase ECS Epoxy Floor Coatings for damp proofing floors and walls. 19. We have had a full structural survey done which highlighted damp at the ground floor level. Overall, investing in a liquid damp proof membrane for your concrete floor is an excellent way to protect your investment and ensure your floors last for years to come. 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. You may need to apply a damp-proof epoxy coating to the concrete before laying a new floor. The Drybase range of liquid-applied coatings including Drybase ECS Epoxy Floor Coatings and Drybase Liquid-Applied DPM can be applied. Now, cut a small square of plastic (approx. co. Preferred methods of floor construction for such premises are full-thickness trowelled concrete or a topping on a concrete base. How to install damp proof membrane on concrete floor. Laying new floor - needs DPM? dunroving Posts: 1,881 Forumite. 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. 99 Inc Vat. Suitable as a damp proof membrane on solid concrete floors. I would advise a single part flexi tile adhesive on top which will enable you to have stone, ceramic or porcelain tiles fixed. • Protects walls and floors from water ingress and dampness. If there was no dpm I would suggest a uniformal distribution across the whole floor. The current recommendations for an effective damp proof membrane are that the ground should be constructed using screed with the damp proof membrane laid either on top or below that layer. When we stick any floor down to the sub floor, solid or engineered, we insist on installing a liquid DPM unless the existing is guaranteed to be 100% in tact. All surfaces must be mechanically sound, dry and clean, i. The epoxy DPM comes as a two-component system. In this case, it is preferable to fit insulation below the concrete slab, where it helps the concrete absorb heat. Because we were laying Karndean Flooring to a new extension we needed to check the % RH(relative humidity) of the concrete with a hygrometer. The vinyl being laid before the concrete has dried out. Apply prior to laying laminate or wooden flooring, over wall-to-floor junctions. 100m² per roll. This prevents moisture from the screed attacking the wood flooring and ultimately ruining it. Please check your local store is open on the. Niavly I thought this would air out. We decided to remove them all and lay new carpet. The most common type of DPM is installed during the building process. 5kg Tins of Epoxy DPM. Groundwater should be tested for any type of sulphate that can contaminate the base flooring and if so, the membrane should be placed under the slab. 22 August 2019 at 10:27AM. But these started to fail due to the 131 primer breaking down after a while. To use an MVS, there must be a fully functioning structural DPM in. 80 Inc VAT. 5kg. The next step in calculating the design of a mezzanine floor is to determine the support posts and beams. Our epoxy DPM products create a new damp proof membrane in a highly. Holds back rising damp where a damp proof membrane is either missing or defective. (3 Reviews) £22. Liquid Epoxy DPM . How does a Liquid Epoxy Damp Proof Membrane work? I don't know anything about using damp-proof membranes. #2. 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. 12 Inc VAT. DPM Floor Membrane above 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. 00 Inc VAT. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. Once the liquid membrane has been applied to the concrete and it dries, an extremely hard surface is. :thumbsup. Would a liquid dpm work,in past I had similar problem, I've just poured some liquid dpm in to the hole & help it with a trowel to find it's way under the concrete,seem to work as I never had damp issue when I moved indoor stop cock to new position at previous place & here when I laid new pipe under utilty floor after clay pipe failed, 10 years on, not. For external tiled areas, we would always advice on the use of a capillary passive drainage system like BAL’s new external tiling systems which ensure the rapid drainage of tiled surfaces. You are. Suitable with underfloor heating. Keep below grade excavations free of water to prevent potential reservoirs of moisture that can migrate upward through slabs. 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. A DPM can be applied to either the top of the slab or beneath onto a concrete blinding. The tiler can then latex or screed over the DPM. Ikopro Synthaprufe Trade Damp Proofing Liquid - 25L. 11. 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). 100% solids, high build coating; Virtually solvent free liquid epoxy resin damp-proofer; Withstands 98% RHTesting the Floor’s Moisture Level. 4. 30mm. Protect your walls and floors from water damage with the Bostik Aquaprufe damp proofer and waterproofer. If a DPM has failed or perhaps was never installed in the first place, the features. 2kg/m². How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. I have attached a photo after removal. How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. Rapid Set Skim CoatRepairs, levels, and smooths concrete for applications. Damp survey. Damp proof membranes are installed in all new properties as a way of protecting from damp. It might seem a bit unusual. A reading greater than 2. 16. If you lay a liquid dpm, you need to cover the walls as well, for the same reason. may then be applied. Damp Proof Membrane Paint. Damp-Proof Floor Coating. The VPU-155 S is a versatile primer easy to apply by either trowel. ft. Whoever did the repair once the fireplace was taken out didn't bother putting any DPC down and just filled it with a concrete/sand mix which had just crumbled over time. I have a fairly damp & uneven concrete floor, probably about 20 years old or more. It has excellent adhesion to most substrates. It should be waterproof to prevent any rising damp getting through. Has anyone had experience of this, can i do it?For instance FS Epoxy Sealer (2 pack water based epoxy coating) can be used once the moisture content is less than 10% and the concrete is a minimum of 14 days old, FS Epoxy Coating (solvent free. Liquid DPM can be applied to the base layer using trowels, rollers, squeegees or brushes. 2 coats SBR. Ground bearing concrete floors - 1960s to 1990s. Jul 13, 2011. The floor is also damp, which I am going to treat with a liquid DPM. Damp Proof Course (DPC): This is a membrane used in walls to prevent the passage of moisture. Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m (47163) (55) compare. This water-based compound can be applied to damp concrete floor slabs, screeds and walls. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. I would think a strip out and start again would be your best option, you should consider where/why there is water evident before. This barrier is intended to stop moisture passing from one to the other. A damp proof membrane (DPM) is used to create a barrier between a concrete (or screed) subfloor and the floor covering that is laid on top such as wood, ceramic or quartz tiles, laminate or carpet. Very cost effective single coat application reducing time on site. Damp proof membrane Floor screed PIR cavity board Lay, level and compact the hardcore in layers (usually 150mm min / 250mm max). Apply in Two Coats. £9. After moving into a 1960s house we had a flood that started lifting old vinyl tiles under the carpet. it’s was very easy to work with, it had excellent adhesion to the concrete floor it was being applied to. S. merit said: ↑. RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer. Leave it overnight. Product is solvent-free, so odourless and taint free, making it ideal for all internal applications. € 80. Liquid DPM for Walls. Add to basket. £. The bitumen is less than a millimetre thick - painted on by all accounts. Step 5: Apply a Damp-Proof Membrane. merit said: ↑. The permanent solution for damp proofing floors • Forms a reliable surface damp proof membrane (DPM) on damp concrete floors • Waterproofs cracks & rising damp on solid floors • 1x 1kg epoxy activator pack • Fraction of the cost of new concrete installation • Domestic, industrial, agricultural & retail applications • No more spending hours smashing concrete. The existing concrete floor can be used as a base, however a new damp proof membrane (DPM) will need to be introduced. Universal DPM allows immediate installation of moisture sensitive floor finishes onto damp concrete and screed. Dry Floor: If your floor has RH readings below 75%, we recommend the use of ARDEX P 51 Primer. It is supplied ready to use. Thanks for the response. Broom Overlay Mix 6000 PSIAdd water and mix - Grey or white. Renders and Cured for min. I have a question about rising damp on quarry tiles ground floor in old building. for above ground use. richel7. All the. Liquid Damp-Proofing Systems. All surfaces must be mechanically sound, dry and clean, i. Floors, Stairs and Lofts. USES For priming, consolidating and sealing of: Absorbent and non-absorbent sub-floors, consolidat-ing weak cement screed and isolation of old adhesive residues. • 5L tin offers coverage of approximately 6. 5m) It will have 50mm insulation boards on top of it, followed by 18mm/22mm. A range of high quality DPM membranes from Capital Valley Plastics, designed for use with solid concrete slabs. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. Non-toxic, non-hazardous and solvent free liquid damp proof membrane suitable for walls both above and belowground. Aug 27, 2017. 6mm is needed to provide a physical barrier. e. #3. Liquid DPM for walls & floors. £36. The kitchen currently has thermoplastic tiles down which most. Fierce Protection For Damp Floors. Most damp-proof floor coatings are applied directly to the concrete floor surface using a brush or roller. 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. 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. 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. Part of this improvement was to remove a wall to open the kitchen up into the adjacent room. Still have moisture coming through (I think), and after further reading, 50mm of concrete is required to 'hold it down' and stop penetration. PRODUCT CODE: SDH0931. 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. I am looking for some advise about laying a SLC with a liquid DPM. Clear and brush an area of a garage floor so that it is completely free from debris and dirt etc. Category: Floor Treatment Tags: Damp Proof Membrane, Damp Proofing. 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. An acrylic brush-on membrane, Dunlop Damp-Proof Waterproofing will prevent rising damp, efflorescence and will resist negative hydrostatic pressure. DAMP BARRIER PAINT - A highly advanced styrene-butadiene rubber (SBR), liquid applied membrane paint. A surface DPM, which bonds to the surface of the concrete, minimises moisture vapour transmission. Add to Basket. It helps to prevent damp and moisture from entering the building’s structure and interior. coating to create a key for the screed. g. Drybase Liquid-Applied DPM (1 L White) (In stock) ☆ ☆ ☆ ☆ ☆. The DPM should: have sealed laps of at least 300mm wide. Liquid DPM 5L. Getting someone to do a damp test to find out the relative humidity RH% of. It is available in black or white with a consistency similar to that of thick emulsion paint. 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. free from dirt, dust, grease or other contamination or coating. Add to basket. Add to Cart. Last edited: Sep 2, 2010. Liquid damp proof membrane can be applied to both floors and walls using various methods such as brush, roller, or spray. Can damp come up through a concrete floor? The easiest issues to isolate and fix with damp floors are problems with above. This Epoxy DPM is a two-component, solvent-free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. If the concrete floor is less than 5mm out of level, you can use a self-levelling flooring compound to even out the surface. These black DPMs can also be used with underfloor heating - under normal operating conditions this will not adversely affect the membrane. Can be used where a structural DPM is not present or is ineffective. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. £ 21. It’s primarily designed for brushing onto concrete floors and fine concrete screeds. After application, this polymer-based coating dries to a flexible liquid waterproofing membrane with high crack-bridging properties. If the concrete is level you could glue the floor to the concrete using an adhesive (as you would a ceramic tile] It is advisable to use an epoxy primer first, it is expencive, about £60 for an average room. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. I'm purchasing a new build and want to put Amtico Spacia down throughout the downstairs. The cavity allows moisture within the floor to evaporate and the vapour to disperse at the membrane edges. Cement based coating for preventing water and damp penetration in walls and floors. The spacing between support posts and beams should not exceed 4 feet. Also acts as a waterproofer for walls, above ground structures and foundations. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. The wall is now down and its time to level off the floors. F Ball DPM F77Be careful as some of those types of tiles contain asbestos. Isolates damp substrates for new floor finishes including carpets and laminated flooring. The. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint; Rising Damp Treatment; Water Repellents; Vapour Control Layers; Internal Waterproofing;. Hi Pete, I have the answer. This can be due to: Moisture rising through the concrete. Normally you would put a compacted bed of about 50mm sand under the DPM. Liquid screed. Say on quarry tiles or a rough surface screed/concrete floor ? They used to say 131 primer and then 200 acrylic. The report says there is no DPM. The choice of application method depends on personal preference and the substrate being treated. 3. 70 Ex VAT. Contractor wants to paint Sika Primer MD on top of the self leveling compound. Virtually solvent free liquid epoxy resin damp-proofer. 3. Plenty of cement/latex/fibre. Damp-proof membrane: A damp-proof membrane has the advantage of being able to be applied to a damp concrete floor and walls. thick. IN CONCRETE SUBFLOORS British Standards 8201:2011 recom-mends using relative humidity (RH) testing of concrete sub floors. Ground-bearing concrete floor slabs should be protected against ground moisture by providing a continuous damp proof membrane (DPM). 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. 2. , 20 mils thick. ARDEX DPM accommodates hygrometer readings up to 98% RH. How do Liquid DPMs work? RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer. The damp surveyor has identified the laminate flooring as a possible cause. Buildings have been dampproofed for years, a practice that used to be. ★★★★★ ★★★★★ ( 3 ) Product code: 47327. Liquid DPM is a substance used to create a waterproof layer on the walls and floors in your building to help stop moisture and rising damp from penetrating the foundation and causing damp issues. To apply liquid epoxy DPM correctly, build up multiple coats, always follow manufacturer's recommendations and ensure that the concrete surface is free of debris or organic matter. I am in the process of improving our kitchen. 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. Rising damp in concrete flooring is a significant issue. Before applying the damp proof paint, stir the contents of the bucket well. It might seem a bit unusual. Provides a flexible and resilient barrier to penetrating damp on walls and floors. £80 per L . I 've dug down and put 100mm of concrete down will liquid dpm to meet up with the existing dpm and 50mm screed ontop easy. If the DPM Primer is being used. . Form some haunching on the 50mm flat, to create slope. 25 Ex VAT. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water. After application, this polymer-based coating dries to a flexible liquid waterproofing. Screed with ceramic tiles laid on it. 3. Apply sand-blind base (this base should be level to within 5mm along any 3m straight edge). 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. This can include timber floors, tiles, laminate flooring and carpet. • 5L tin offers coverage of approximately 6. 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. 4M X 5M 500G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Broom Overlay Mix 6000 PSIAdd water and mix - Grey or white. 3. We have had a full structural survey done which highlighted damp at the ground floor level. Concrete ground floor. Before applying the damp proof paint, stir the contents of the bucket well. If it’s solid wood you need a surface dpm. Hi, Just about to put a liquid DPM down on a concrete floor. Withstands 98% RH. We supply trade quality DIY and home improvement products at great low prices. An ARDEX Damp Proof Membrane will protect the floorcovering. Hi, my name is Andy Parkin. Whilst scraping them I noticed a bitumen Smell and residue. Self-leveling concrete can be used as an underlayment for tile, carpet, or other floor coverings. 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. Step-by-step guide for how to apply liquid DPM for concrete floors. or self level to adhere to. £4. Suitable for extensions, basements and cellars. Can be applied to damp surfaces. Thread starter rifraf74; Start date 22 Feb 2007; R. If the coating is not for your final decorative surface. 186. A damp proof membrane creates a barrier to prevent moisture from rising and damaging or affecting an area. 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. DPM’s can be applied to either a suitable blinding layer under the slab or internally to the top of the slab.