Drybase Liquid-Applied Damp-Proof Membranes 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. No need for a separate primer. 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. The product is applied in two coats. merit said: ↑. 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. 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. underneath a screed or self level we. Liquid DPM 5L. Lancashire. Can be applied to damp surfaces. I recently converted my shed into a home gym. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. 30mm. where the ground was uneven or where there were soft spots below the slab, it might be reinforced with a mesh. Vinyl flooring can make moist floors sweat causing more moisture damage as they are sold as a semi impermeable product. - I'm wondering why the DPM is needed. Jul 13, 2011. We are proud to have over 20 years experience of. I am looking for some advise about laying a SLC with a liquid DPM. Liquid Epoxy DPM - 2. Many damp-proof floor coatings are used directly on the concrete floor surface with a roller or brush. 00 Ex VAT. It might seem a bit unusual. £100 - £600. However, should there be a particularly high water table/pressure and/or a particularly porous floor, two coats. £36. is this a concrete ground floor? were the marleytiles stuck down with a yellowish adhesive, or a black, bitumous coating?. Covering the concrete with plastic can help to keep it cleaner and stop it from cracking. Will applying liquid DPM cause issues if the screed sits above the DPC?. I've used the two part resin on a damp concrete floor in an old Victorian place. A few floors had a DPM formed in 20mm. If the floor will be suspended then a liquid dpm is pointless as no physical contact will be made. applying 2 coats of Drybase® Liquid DPM. 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. In particular, this can include permanently damp concrete floors or where the DPM (Damp Proof Membrane) is. Tile brands such as Bal, Ardex, Tops, etc all sell tile primers with fancy names ! Can simply use SBR diluted, follow instructions on bottle, likely to be 1-4 water, then apply 2 coats. Professional tips: how you should do it. How to apply Damp Proof Paint. This can include timber floors, tiles, laminate flooring and carpet. If. RonaScreed DPM is also suitable for use prior to the application of tiles, soft flooring or wood. 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. These black floor DPMs are designed for use in concrete slabs to protect against moisture. Can be over painted after 16 hours with most types of floor coatings. Concrete Cured for min. In addition to our office based Technical Department, we employ a highly experienced team of 25 Area Sales, Contract and Business Development Managers, who are available nationally to offer advice, support and training, not just over the phone, but in person and on-site. I agree, looking at the liquid DPM's that Wickes do I'd say you'll struggle to get someone to guarantee tiling on them would be ok, sorry!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. Mix. Category: Floor Treatment Tags: Damp Proof Membrane, Damp Proofing. Builders use damp-proof membranes (DPM) primarily under concrete slabs to prevent moisture ingress by capillary action. Cement screed is the most commonly installed type of screed and averages around £12 per sqm. It's an expensive solution, but at least you get peace of mind. 99. 5kg. Check the condition of the concrete floor slab for imperfections. 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. My questions are: Is there any reason to use a roll of DPM vs a liquid one or vice versa? Do I need to apply any sort of primer before putting down the SLC on top of the DPM? How thick does my layer of SLC need to be? 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. M. Description. How do you install a damp proof membrane on a concrete floor? Do I need liquid DPM? Testing the Floor’s Moisture Level 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. The type of coating is chosen, depending on the usage of the floor. Day 4, move all your stuff back in (could do this day 3, depending on how fast your chosen compound goes off). Old coal cellar, half is decent concrete but the other half has a bitumen type coating already. VAT. Although he says in normal circumstances we would need to wait 1 week for each mm to allow the screed to dry, we can get round this by using a liquid DPM - he says in that case the tiles and engineered wood for the separate rooms. Thanks for the response. I'm looking to tile the floor, which currently has parquet on it, bonded to the concrete with a bitumen adhesive. Learn how to damp proof concrete floors with a liquid epoxy DPM, a remedial solution for existing or failed DPMs. Renders and Cured for min. You can use Liquid Damp Proof Membrane with a glued down or floating floor. Virtually solvent free liquid epoxy resin damp-proofer. The concrete slab was usually 100 to 125mm thick. Water is added to ensure a thorough mix and to aid workability. The wrong adhesive being used to lay the vinyl, or. Preparation is the main thing for the layers, and the substrate should be dry and clean. Quarry tiles are installed on the solid concrete slab which is a good. I need to put down a damp proof membrane and self levelling compound on top of that. The principle of tanking is to provide a continuous waterproof barrier or membrane; this is created using either mastic asphalt or proprietary adhesive DPM. Drybase Liquid-Applied Damp-Proof Membranes. To be honest it’s worth having some sort of moisture suppressant put down just to make sure. wet coating. Some parts of it are completely dry but other parts of it are still very tacky. 00 € 60. 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. very rough concrete like a garage floor. 0. Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. Sika primer MB or Sika-Bond Rapid DPM) or, in the case of a floating floor, a properly installed heavy-duty, non-permeable plasticThis should be a 6 foot (1800mm) level to get a proper level because it is such a big area. For a self-levelling screed a system such as Flowcrete UK’s Hydraseal would be used. As long as your dpm is lapped and bonded with your dpc your internal floor level can finish higher than your dpc, although can cause issues with external door opening,generally your finish floor level would be gauged with dpc to finish at the same height. In a case where the floor is wholly below ground level, as is the case in a basement, all walls should be tanked. Would that be ok or would it sink?. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. Best Acrylic Sealer: Foundation Armor Concrete Sealer. Coverage. I would suggest also laying a new underlay which has a vapour barrier. Ground-bearing concrete floor slabs should be protected against ground moisture by providing a continuous damp proof membrane (DPM). DIY Concrete Floor: Pouring Slab 3/3. 11 Aug 2022. 75 m2 1. Step-by-step guide for how to apply liquid DPM for concrete floors. Add to basket. Up to 10 years warranty on selected items. 00 Ex VAT. Acts as a bonding agent for plaster and curing agent for concrete. Apply around the edge of the room using a paintbrush, and then use a pre-wetted short. The Wickes liquid DPM has been recommended before, since they only seems to have bitumen based liquid DPB I presume that's the one. £36. Preparation is key with these coatings and the substrate must be sufficiently clean and dry. Hardcores varied in quality - many have since proved to be totally unsuitable. :thumbsup. #2. 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. 00 Ex VAT. However, when I hammer-fix the battens to the concrete I'm going to punch holes in my. Plenty of cement/latex/fibre. To provide additional insulation, tongue-and-groove wood-fiber board. 00 Inc VAT. The concrete slab was usually 100 to 125mm thick. The Everbuild Black Jack DPM is a ready-to-use emulsion that can be. If its not right. 30 Jan 2022. The most popular screed types include cement screed, anhydrite screed (also calcium sulphate screed), mastic asphalt screed and dry screed. Standard sand & cement screed, dries at approx 1mm per day, depending on variables. The floor is old concrete and dips ~25mm in the middle. I have an uneven concrete floor inside. Set a straightedge across the floor. Add to Basket. MR HARRY Member. Rising damp in concrete flooring is a significant issue. Fitting floor insulation tends to be far more straightforward when starting from scratch in a new build or extension. Hold the up the low end of the level until the bubble is in the middle, then measure the gap between the floor and the raised end of the level. In order to make sure the. 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. Insulation sheets and steel laid on top of plastic membrane. I intend to follow the liquid DPM/self-levelling 'stickys' on the Flooring thread, but wondering what to do with the section of wall below the DPC. Joined 22 Jan 2007 Messages 15 Reaction score 0 Country. Hi, I have painted a bitumen based liquid DPM (not the 2 part epoxy types that most other posts are about) on my damp concrete floor (1950s bungalow with no DPM and on a hill with possibly high water table). Tried and tested and it works. If you are using full contact adhesive to stick down your new wooden floor, a broadcasting of Kiln dried sand as you apply the 3rd coat of the Liquid DPM, will act as a superb adhesion promoter, if for example you use Lecol 5500 adhesive or Sika. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. #4. Gallery. IKOpro Synthaprufe Original is a BBA Approved (cert no. I want to avoid digging it up if I can. Add to basket. 98/3454), high performance, brush applied damp proofing emulsion containing synthetic rubber latex which provides a seamless waterproof and vapour resistant, black elastomeric membrane. Thread starter rifraf74; Start date 22 Feb 2007; R. Vapour barriers. Floors: Under/above. Obviously if its a surface DPM you dont have a few inches of concrete to weigh it down. The black layer is possibly the adhesive from the previous floor such as thermo plastic tiles or parquet. 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 [email protected] DPM for walls & floors. By digging to locate the initial leak we have gone down 3. Floors: Under/above screeds to provide a damp proof membrane. 2,940. The easiest method is to push quilt-type insulation into the spaces between the joists from below. The installation of liquid damp proof membranes is a vital stage in the building process, for both new builds and refurbishment work where a structural DPM may be missing or. The existing concrete floor can be used as a base, however a new damp proof membrane (DPM) will need to be introduced. 8 Apr 2013. However there is a dpc cavity tray. 4M X 5M 500G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Allows immediate installation of moisture sensitive floor finishes onto damp concrete and screed. 3. DPM is Laid and Sealed! » Roselea. but something that is suitable and compatible for the cementone - cempolay self level cement, maybe Ardex or Fball dpm thanks guys once again you point out the obvious to a fool like me. We provide excellent results through our liquid screeding and concrete flooring services. starstarstarstarstar. In about 6 hours, it may be completely hardened and ready for use, depending on the flooring material being installed on top. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. Can be used where a structural DPM is not present or is ineffective. Use on concrete floors as an alternative to polythene. It helps stop moisture passing from one to the other. 0. rifraf74. 2. 00. You can buy self-levelling floor screed compound from any DIY store. 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. - lay a liquid dpm. For further help and advice with damp proofing and Liquid DPM please call our product experts today. A typical concrete floor build up that incorporates a VCL would be as follows. Damp-Proof Floor Coating. Lancashire. Liquid damp proof membrane (water based bitumen) applied in several coats directly to the concrete floor with a roller or brush. It is supplied ready to use. Holds back rising damp where a damp proof membrane is either missing or defective. I wanted to self-level the floor using mapai ultimate leveller 1210 and Secrete Ulitmate Primer for adhesion. Blue 1. Magnesite must be completely removed. Screwfix Select. This is supported with netting tacked into place. The DPM and adhesive will work in unison to improve the overall level of moisture protection. Applications. Side extension refurb: old concrete slab is uneven with a line of about 10mm difference in heights down middle, and dpm under screed is visibly not 100%, with a few gaps. Our Epoxy Damp Proof Membrane is a two-component, solvent free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. About this product. The bitumen is less than a millimetre thick - painted on by all accounts. Water is added to ensure a thorough mix and to aid workability. If a DPM is necessary, we recommend applying two coats before the application of Luvanto adhesive. 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. other floor coverings including tiles, vinyl, wood and ca. Damp survey. MPN SKBDRAPDPM5. DPM Floor Membrane above Concrete Drybase Liquid-Applied DPM (1 L White) (In stock) ☆ ☆ ☆ ☆ ☆. 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. 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). 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). 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. Engineered wood is a more stable product but should have a proper membrane underneath first. Liquid DPM's are relatively new and recommended theses days but we got away with laying tiles directly onto concrete in 60's 70's 80's etc without these and without any problems. 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. Our Waterproof Blue can be used in showers, bathrooms, wet rooms, basements and other areas of your building that need to be protected from excessive. Stack Exchange Network. Find out the benefits, advantages and steps of installing a liquid epoxy DPM for existing or new concrete floors. I would liquid DPM first after giving floor a good sweep and hoover to remove loose material, Black Jack by Everbuild is good, 2 coats recommended, follow instructions on tin. Don't use a bitumen at all, you are correct eventually your screed will fail. The affected rooms are a small kitchen and lounge. jay said: As above you may find it difficult to find a tile adh manufacture who will grantee their product over the membrane. Ready for your floor finish. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. Generally speaking, when using a liquid DPM you apply your substrate by pouring it onto the floor area to be treated, and then trowel, paint, or roller it in. DPC is located around the perimeter of the walls whist a DPM is hidden under the floor slab or screed. When mixed thickly it can be used vertically for surfaces such as cellar walls and storage tanks. 5" sand & cement screed 3 coats of synthapruf 4" concrete 1:3:6 6" hardcore well consolidated & blinded with sand I have two questions: 1. Self-leveling concrete can be used as an underlayment for tile, carpet, or other floor coverings. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. richel7; 17 May 2010; Floors, Stairs and Lofts; Replies 6 Views 20K. Technoseal Floor DPM. Hi, Just about to put a liquid DPM down on a concrete floor. Suppresses residual. Ensure that the joint between the bottom of the plasterboard and the floor is sealed. a) 3 coats of synthaprufe liquid DPM to wall running 1 course below DPC and 2 courses above. Professional tips: how you should do it. Needs a liquid dpm and smoothing from 7 to 25 mm. Drybase 2mm Plaster Membrane Mesh (2m x 20m) - Low-Profile Plaster Membrane For Use on Damp Walls. #1. 2020-05-24T11:35:02+01:00 Answered 24th May 2020Liquid DPM. It is a highly effective membrane designed to be easy and quick to paint on (unlike others on the market). My immediate thought would be to ensure the rest of the floor had a DPM or moisture suppressant, to give it the technical name. So in this hot dry weatherI intended to paint the floor with Wickes bitumen liquid damproof membrane, cover this with a polythene damp proof membrane follwed by a concrete screed. Hi All come across this forum and would really appreciate some assistance. A few months have passed since then and is now on average 2. Vapour Barrier vs Damp Proof Membrane. Jord86 Screwfix Select. Single Sided DPM Tape - 75mm x 33m. This method is very costly and extremely invasive. For example, if there is a significant problem with damp rising through your quarry tile. 30 Dec 2018. The lower sand ratio means a higher ratio of cement, which gives a stronger mix. Top 5 Concrete Sealers. £2,000. Virtually solvent free liquid epoxy resin damp-proofer. Adheres to saturated concrete even at lower temperatures. 07545421044. After the final application of EP40. The floor was vacuumed before applying Aredx DPM IC, an epoxy liquid Damp Proof Membrane (DPM). It is suitable for use as a one or two application depending on the moisture content of the floor. Self levelling compound. Liquid epoxy DPMs are ideal for concrete floors, such as garages, where the original damp proof membrane is missing or has broken down. 21 May 2010. Laitance must also be removed from concrete. If the DPM Primer is being used. 16. Hi kborg. and then apply a second coat with kiln. It should be waterproof to prevent any rising damp getting through. #4. Ideal for waterproofing structures, such as culverts, retaining walls and bridge abutments, this Black Jack DPM is also commonly used for general waterproofing. Contractor wants to paint Sika Primer MD on top of the self leveling compound. 5 Litre Containers, in Black colour only. 3. Its wrong. A damp-proof membrane is a layer of material usually laid below concrete floors during construction. General waterproofing: - for use on concrete,Liquid-Applied Membrane. e) A full height bay to rear of house has now been enclosed within the new. Mostly only one coat is required and is very simple to apply. 17DW400. Time is saved on floor preparation as the need to re-screed the floor or use a liquid DPM, the mixing of epoxies and adhesives have been removed and you don’t need to wait for. 2. The problem is by the time we insulate, screed and lay the flooring we will be above the dpc& membrane level by 4 inches. 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. . 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. A vapour barrier, on the other hand, is a damp proofing product attached to a wood floor underlay to reduce moisture passage. Drybase Liquid-Applied Damp-Proof Membrane High-strength damp-proof coating for a wide variety of applications. How To Do Damp Proof Membrane F Ball F77 Dpm On Concrete Floor. DPM Membranes for Concrete Floors . 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). ARDEX offers a range of liquid or surface Damp Proof Membranes (DPM) to protect the floorcovering from residual construction moisture and rising damp, when a structural. Can be used as a damp proof membrane and as part of a designed structural waterproofing system. How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. There is no dpm under the concrete slab so I will be coating the floor and walls with ka tanking slurry. The DPM should: have sealed laps of at least 300mm wide. The DPM above concrete should be protected by either screed or a floor finish unless it. Dust, dirt, oil, grease and other contaminants should be completely removed. 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. The black layer is possibly the adhesive from the previous floor such as thermo plastic tiles or parquet. Developed to suppress residual construction moisture in cementitious subfloors including power floated concrete and sand/cement screeds. Country. Temperature, air flow and type of mix, being just a few. Hi, I'm currently converting my garage into an en suite. Clear and brush an area of the garage floor so that it is totally free from any loose materials. Small hole dug through 2" soft sandy concrete to reveal hardcore and soil. Neatly fold the damp proofing membrane around the corners. 5 % Tramex). 1. J. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. richel7. The advice I was given was a liquid DPM to be put down on the concrete floor and then I will build the floor structure on top, it will be in contact with the floor via packers but the bottom layer as such will be a square of plastic to avoid. However we have limited headroom in the kitchen so I wondered if a thin layer of the self levelling compound would suffice to lay a new vinyl floor, rather than go. Liquid Epoxy DPM - 2. Damp Floor: If your floor has RH readings above 75% and below 95%, with a functioning structural damp. 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. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. The Everbuild Black Jack DPM is a ready-to-use emulsion that can be used as a curing agent for concrete floors and acts as a waterproof layer for walls, above-ground structures and foundations. This method is very costly and extremely invasive. MS Polymer adhesive, for the DPM, please it depends on the concrete, best to contact a local flooring supplier *** Safer to apply the liquid DPM, particularly with solid wood as this has less tolerance for moisture. Then 100mm insulation and 18mm ply as a floating floor system. 7 days or sealed. 18 Aug 2023. OR. Hardwearing – high abrasion resistance. I have an uneven concrete floor inside. Tried and tested and it works. b) Physical DPM upstand, using DPC 300mm. A small risk of them blowing if moisture is excessive though. Blue 1. dried sand broadcast into the wet. apply two coats of Drybase® Liquid-Applied DPM as normal. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. T1000 Stampable OverlayFor use with resurfacing concrete floors and hardscapes. PermaSEAL Damp Proof Paint 5L. Provides a flexible and resilient barrier to penetrating damp on walls and floors. Drybase products have the advantage of being extremely easy to apply. Temperature, air flow and type of mix, being just a few. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. This type of waterproofing membrane is applied directly to the surface of the concrete floor to protect it from water seeping through and getting the floor or walls wet. • Weatherproof protection for walls, above-ground structures and foundations. This Epoxy DPM is a two-component, solvent-free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. Developed to suppress residual construction moisture in cementitious subfloors including power floated concrete and sand/cement screeds. Property is mid 1960s, solid ground floor. And damp can rise through it if not used. Can be easily applied by brush. Day 2, 2 coats of your dpm. 1, your new concrete will need drying time, approx 1 month for every inch, then a DPM is required. 2. 40 inc. the DPM and new floor can then go on top of this. 00 Inc VAT. rogerk101, Mar 13, 2020. The vinyl being laid before the concrete has dried out. The membranes can sit above or below the slab. High performance, over-banding sealing tape system for postsealing and waterproofing of construction. ARDEX DPM 1 C. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint; Rising Damp Treatment; Water Repellents; Vapour Control Layers; Internal Waterproofing;. Damp proof membrane (DPM) taped at the edges and anywhere it is joined. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. And yes you can level the floor after. Accommodates Hygrometer readings up to 98% RH. Standard sand & cement screed, dries at approx 1mm per day, depending on variables. I have a question about rising damp on quarry tiles ground floor in old building. Two part epoxy-based surface damp proof membrane. This is supported with netting tacked into place. Drybase White Liquid Damp Proof Membrane - 1L Drybase® Liquid applied DPM is a single pack barrier coating for above ground use. Note that two coats are generally. 99. • Solvent Free, Low Odour. Use polyethylene sheeting to create a waterproof membrane to ensure that there is no leakage of the screed when it is pumped in wet. Odourless, rubber-enriched bitumen emulsion. I would think a strip out and start again would be your best option, you should consider where/why there is water evident before. You also mentioned that there are vinyl tiles over the floor. #5. Our team answer thousands of questions every year, offering. If the coating is not for your final decorative surface. 30811761. Laitance must also be removed from concrete. Liquid DPM 5L Rating: 100%. If a DPM has failed or perhaps was never installed in the first place, the features. BS recommends (Annex A) hygrometer test which should give a reading of not more than. 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. Screwfix Select. Download it for free and learn how to. EITHER. The concrete floor is in a finished bathroom and from what I can find out online the bitumen is a bit messy to apply. Bostik Screedmaster Rapid DPM is a ready for use; one part, water-based damp proof membrane. A DPM coating is your best option for existing floors that are experiencing dampness, as it doesn't require removing any concrete slabs. It helps to prevent damp and moisture from entering the building’s structure and interior. 5 odd inches. Ideal for waterproofing structures, such as culverts, retaining. rifraf74. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint;. If a radon barrier is required, lay this over the grouting layer and extend it. 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. £30. Grinding the old bitumen from the concrete floor. These can over time allow a build up. The plan was to lay American Black Walnut but the hallway floor was not level.