A liquid-based damp-proof membrane will be suitable for our outdoor concrete subfloor exposed to weather elements. Hello, hoping someone can help. It has to breath to survive. 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. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. Traditional screeds. Liquid dpm/levelling compound. Plenty of cement/latex/fibre based. merit said: ↑. Step-by-step guide for how to apply liquid DPM for concrete floors. Answered 22nd Aug 2016. It might seem a bit unusual. It is available in black or white with a consistency similar to that of thick emulsion paint. The chap who will be installing the wood floor has tested the concrete and the moisture readings are high; upto 85%. 75 m2 1. Applications. If the floor will be suspended then a liquid dpm is pointless as no physical contact will be made. You also mentioned that there are vinyl tiles over the floor. The calculator helps translate the CO 2 savings into concrete terms such as the annual emissions from cars, households or the amount of CO 2 sequestered by trees. Alternatively, dilute the first coat of Drybase® Liquid DPM with 30% water for use as a primer. Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. I'm looking for opinions on the best self leveling screed to use on my slightly wonky concrete garage floor. How to do Damp Proof Membrane of your sub-floor. 3 - 12 % CM for magnesia flooring (proportion of organic parts). rogerk101, Mar 13, 2020. Chemical damp proofing cost. link with wall DPCs to form an impervious barrier to prevent moisture reaching the interior of the dwelling. Description. Temperature, air flow and type of mix, being just a few. Before applying the damp proof paint, stir the contents of the bucket well. Location. product and the atmosphere should not be condensing. 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 concrete floor is below the DPC level so currently gets damp. But if you’re planning to install concrete floors in an area prone to dampness or water damage, it’s essential to protect them with a liquid damp proof membrane. Larsen DPM Universal is a superior 2 pack epoxy surface applied damp proof membrane. I've got to raise the floor up slightly with a deep base leveling compound. From below, installing insulation to improve the floor or as part of a basement insulation project is fairly straightforward. 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. If the coating is not going to be the final decorative surface and a. may then be applied. If your slab is above DPM, I cannot see why you say. Our easy to install range is available in various thicknesses up to 0. Can be easily applied by brush. 60 – £ 110. I have a fairly damp & uneven concrete floor, probably about 20 years old or more. You need a flooring professional to use an epoxy liquid DPM and screed suitable for this area and is not a job you should think to attempt 1 pinhole is a failed floor. Liquid DPM 5L. As a rule self levelling screeds need an active DPM at some point below them other wise they will likely de-bond due to damp and this could be the reason it seems to be lifting easily. Add to basket. The edges of the DPM should have been flopped up the walls, say, 300mm and later trimmed back to suit. free from dirt, dust, grease or other contamination or coating. Property is mid 1960s, solid ground floor. Insulation sheets and steel laid on top of plastic membrane. Easy Handling & Installation. Robust - resistant to on site damage. Developed to suppress residual construction moisture in cementitious subfloors including power floated concrete and sand/cement screeds. John Lewis are correct in being very very cautious re: damp, it is critical that the prep is spot on and damp levels sorted before any attempt is made to lay the Amtico. case of un-bonded screeds. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. Now the floor is flat the DPM can be applied to seal the concrete. If you are getting 8 to 9% MC on concrete then you really need a DPM (or maybe the right meter, brick isn't concrete). 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. e. Virtually solvent free liquid epoxy resin damp-proofer. - lay a liquid dpm. Once dry apply two coats of Drybase® Liquid DPM as normal. This can include timber floors, tiles, laminate flooring and carpet. Tramex reading at the time of vinyl removal was 3-4+. 00 Ex VAT. Vapour Barrier vs Damp Proof Membrane. Clear. First scrape up as much of the residue as possible apply a cote of Ardex. Blue 1. We have purchased a 4 bed detached house built in the 1950's. I went to buy compound to level it yesterday, and now it looks nice. #1. Preparation is key with these coatings and the substrate must be sufficiently clean and dry. Preparation is the main thing for the layers, and the substrate should be dry and clean. Don't use a mix of manufacturers products because if you asked for a site visit due a failure, they'd automatically walk away. 2 Surface finish Screeds The surface of the screed should be finished according to the type of wearing surface or flooring that is to be laid. 7,856 1,619 113. Last edited: Sep 2, 2010. How to apply Damp Proof Paint. The black layer is possibly the adhesive from the previous floor such as thermo plastic tiles or parquet. The concrete floor is in a finished bathroom and from what I can find out online the bitumen is a bit messy to apply. 98/3454), high performance, brush applied damp proofing emulsion containing synthetic rubber latex which provides a seamless waterproof and vapour resistant, black elastomeric membrane. dried sand broadcast into the wet. Suitable for internal and external use. BS recommends (Annex A) hygrometer test which should give a reading of not more than. Note that two coats are generally. Ask your plasterer to leave a 20mm gap between the bottom of the board and the floor which can then be filled with expanding foam. water leak from the toilet in to the floor. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. Damp Proofing Concrete Floors With Liquid Membranes. Flexible - easy to detail and install on site. Suitable for extensions, basements and cellars. Is there a suitable, less messy alternative perhaps?DandDflooring. If not then you have rising damp which a liquid dpm is not designed for anyway. Preparing the Oversite u2013 The Extension that 10k Built . First scrape up as much of the residue as possible apply a cote of Ardex NA then the liquid Dpm and then another layer of Ardex NA. Rob_bv, Nov 11, 2020. It is important that concrete and sand/cement screed surfaces are mechanically prepared to produce a clean, sound and dust-free before the application of a WSM. 0. Clean quarry tiles. Drybase products have the advantage of being extremely easy to apply. Liquid DPM and waterproofing paint to waterproof and damp proof your property. fillyboy, Oct 11, 2018. I recently converted my shed into a home gym. rogerk101, Mar 13, 2020. 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. Grinding the old bitumen from the concrete floor. 41. Mapelastic AquaDefense provides a thin, continuous barrier to protect adjacent rooms and floors below from water damage. Dig it all up (Its possibly up to 50mm thick) Then lay DPM/Visqueen sheets tanked up the walls and lay new concrete or use an epoxy liquid DPM tanked up the walls and lay a deep base screed. Location. Mix. It seems like a self levelling floor compound is the best way to go. Hardwearing – high abrasion resistance. IN CONCRETE SUBFLOORS British Standards 8201:2011 recom-mends using relative humidity (RH) testing of concrete sub floors. I need to put down a damp proof membrane and self levelling compound on top of that. 2. However the chance that the floor tiles or adhesive can release fibres and become respirable when disturbed is very low. £. He has suggesting using ARDEX DPM 1C to protect the floorboards. £30. If you notice a gap between the straightedge and the floor, your floor is dipping in that area. Damp-proofing floors with damp-proof membranes is best done by professional contractors. Old pre 1960's house with a concrete ground floor. Vinyl flooring can make moist floors sweat causing more moisture damage as they are sold as a semi impermeable product. The dpm resin, is a sticky gooey 2 part epoxy based liquid to be precise. 8 Apr 2013. Add to basket. Country. Brian McNaughton & Son Ltd. Protects the floorcovering from residual construction moisture and ground water vapour. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. Virtually solvent free liquid epoxy resin damp-proofer. rogerk101 said: ↑. Accommodates Hygrometer readings up to 98% RH. 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. 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. If a radon barrier is required, lay this over the grouting layer and extend it. Step 3: Lay the watertight membrane. The specific liquid DPM system will depend on the type of substrate or screed. The floor is concrete, no idea when it was laid. Browse our selection of damp roof membrane (DPC) for use on concrete to prevent moisture from seeping through layers of flooring. It helps stop moisture passing from one to the other. 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. In a case where the floor is wholly below ground level, as is the case in a basement, all walls should be tanked. In order to make sure the. 3. Quarry tiles are installed on the solid concrete slab which is a good. Trying to find out how much it costs to screed a floor? In this guide, we look at all the floor screed prices for different rooms and sizes (per square metre), as well as different types of screed such as: Self-leveling screed. For mastic asphalt, wood block and strip, and some textile floor coverings, a non-slip finish is appropriate, while thin sheet. #4. If you wanted to forgo the DPM, get some moisture readings with hygrometer or contact machine on the surface screed. 18 Dec 2013. Getting someone to do a damp test to find out the relative humidity RH% of. Good afternoon. Professional tips: how you should do it. In my 1930's extension, the solid wall has an existing DPC but the concrete floor has no DPM. Many damp-proof floor coatings are used directly on the concrete floor surface with a roller or brush. Day 4, move all your stuff back in (could do this day 3, depending on how fast your chosen compound goes off). and then apply a second coat with kiln. All surfaces must be mechanically sound, dry and clean, i. Clear and brush an area of the garage floor so that it is totally free from any loose materials. Country. 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. liquid DPM - onto the original hard floor. 2 coats SBR. I have a fairly damp & uneven concrete floor, probably about 20 years old or more. marginally exceeds 70%, a liquid damp proof membrane (DPM) is required. 00 Inc VAT. Ideal for waterproofing structures, such as culverts, retaining walls and bridge abutments, this Black Jack DPM is also commonly used for general waterproofing. 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. #3. rifraf74. After the final application of EP40. #2. Apply around the edge of the room using a paintbrush, and then use a pre-wetted short. 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. And damp can rise through it if not used. A decent fitter will test the slab for you before fitting anyway. You may need to apply a damp-proof epoxy coating to the concrete before laying a new floor. Two coats will provide protection up to a maximum hygrometer reading of 95% RH. £750 - £3,000. jay said: As above you may find it difficult to find a tile adh manufacture who will grantee their product over the membrane. Tax: £18. S. The principle of tanking is to provide a continuous waterproof barrier or membrane; this is created using either mastic asphalt or proprietary adhesive DPM. Sussex. DIYDave. Vapour barriers. 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. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint; Rising Damp Treatment; Water Repellents; Vapour Control Layers; Internal Waterproofing;. #4. I am looking for some advise about laying a SLC with a liquid DPM. Add to Cart. The lower sand ratio means a higher ratio of cement, which gives a stronger mix. Browse damp-proof membrane products from Toolstation here. 1. EITHER. VAT. Cement screed is the most commonly installed type of screed and averages around £12 per sqm. It is supplied ready to use. Best Sealer for Basements: RadonSeal Concrete Sealer. 5 % Tramex). Place the damp proofing membrane on the wall. weberfloor DPM can be applied on to concrete or cement based screed. Before applying the damp proof paint, stir the contents of the bucket well. It can be applied to damp floors and maintains excellent adhesion. jay said: As above you may find it difficult to find a tile adh manufacture who will grantee their product over the membrane. 00. I've used the two part resin on a damp concrete floor in an old Victorian place. The vinyl that was laid bubbled up, so contractor removed it. A DPM coating is your best option for existing floors that are experiencing dampness, as it doesn't require removing any concrete slabs. 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. 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). The DPM will be laid first, usually as a liquid product 'painted or trowelled' onto the concrete surface, then the screed laid over that. 00 Ex VAT. Liquid DPM to reduces the potential mois-ture related problems. DPM Primer is a system for substrates that have a residual moisture level greater than 75% RH. that is compatible with the self level cement i shall be using. Can be used as a damp proof membrane and as part of a designed structural waterproofing system. #5. Use 1000 gauge or thicker – ideal for this is the polyethylene use for the DPM under your concrete subfloor. It helps to prevent damp and moisture from entering the building’s structure and interior. 19. Looking for best method to both level and damp proof the concrete, to then be covered with a thin layer of celotex, then engineered wood or. 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. Liquid epoxy DPMs are ideal for concrete floors, such as garages, where the original damp proof membrane is missing or has broken down. Mostly only one coat is required and is very simple to apply. Prepare substrate. Id be tempted to run a dpm across the floor and up behind the skirting. 19. #1 merit Well-Known Member If it’s solid wood you need a surface dpm. M. 11 Aug 2022. Liquid Epoxy DPM - 2. A water based product would have taken a month to. Maximum bond can be achieved by vigorously brushing the primer coat into the floor substrate using a stiff bristled broom. The product is applied in two coats. 3. Universal DPM allows immediate installation of moisture sensitive floor finishes onto damp concrete and screed. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. 16. 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. It is available in red or yellow, in 5 or 10kg units, and has a fast curing time of 12 hours minimum. In certain situations, i. Tried and tested and it works. 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. 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. For further help and advice with damp proofing and Liquid DPM please call our product experts today. Basically it was laid like this: timber frame built on top of garden dirt. NO MORE DAMP EP40 Floor Primer is designed to soak into the substrate, block pores, improve adhesion and ensure an even, high quality finish. 16. If you have a engineered wood floor and your new slab is dry below 75%rh then technically you don’t need one. where the ground was uneven or where there were soft spots below the slab, it might be reinforced with a mesh. Low trade prices. 100% solids, high build coating. If the problem is moisture, lift the vinyl and allow the concrete to dry properly. I spoke to Everbuild/Sika and they were able to recommend a DPM paint and compound that would bond together, by priming the final layer of dpm. Protects the floorcovering from residual construction moisture and ground water vapour. Manufacturers will be able to advise. Set a straightedge across the floor. Bostik's damp proof membranes provide essential moisture mitigation and suppression for subfloors, helping to protect your installation for years to come. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. The affected rooms are a small kitchen and lounge. Country. The DPM we use does not cancel all moisture out as this will end up. Hi, Just about to put a liquid DPM down on a concrete floor. About this product. Walls appear to be dry & are mainly concrete block. In this case, it is preferable to fit insulation below the concrete slab, where it helps the. DPMs come in solid or liquid form, the latter being a practicable solution for a garage conversion. By digging to locate the initial leak we have gone down 3. Apply prior to laying laminate or wooden flooring, over wall-to-floor junctions. Thanks for the response. Liquid Epoxy DPM - 2. Ideal for general waterproofing and fixing. Screwfix Select. Jord86, Jan 14, 2023. Find out the benefits, advantages and steps of installing a liquid epoxy DPM for existing or. 1. £36. The floor in the extension wasn't made properly and is getting damp. I have an uneven concrete floor inside. I would. More than two applications are needed for the best results. Ground bearing concrete floors - 1960s to 1990s. The DPM will be laid first, usually as a liquid product 'painted or trowelled' onto the concrete surface, then the screed laid over that. There is no dpm under the concrete slab so I will be coating the floor and walls with ka tanking slurry. Jord86 Screwfix Select. 1. I would advise a single part flexi tile adhesive on top which will enable you to have stone, ceramic or porcelain tiles fixed. Liquid damp proof membrane (water based bitumen) applied in several coats directly to the concrete floor with a roller or brush. Thread starter rifraf74; Start date 22 Feb 2007; R. The existing concrete floor can be used as a base, however a new damp proof membrane (DPM) will need to be introduced. In contrast, a vapour barrier (VB) is fitted on the warm side of walls or roofs to stop interstitial condensation. When a plastic DPM is missing or not practical, this product can be used as a liquid DPM for concrete floors to protect against residual moisture and rising damp. £100 - £600. The DPM above concrete should be protected by either screed or a floor finish unless it. Add to basket. Rising damp in concrete flooring is a significant issue. The DPM membranes are available in 4M x 25M rolls as well as a handy pack ideal for smaller jobs. underneath a screed or self level we. Sikabond Rapid DPM is a solvent free reaction curing resin primer and damp-proof membrane for cement based substrates. Drybase Liquid-Applied Damp-Proof Membrane High-strength damp-proof coating for a wide variety of applications. No need for a separate primer. 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. If in doubt check the moisture content of the concrete. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. 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. GaryTheTiler said: Sound like you don't have a damp membrane under the concrete or a leaky pipe under the floor perhaps. Your solid floor is porous (which is normal), trouble is water is getting into it either from underneath or from the sides. ARDEX DPM 1 C R has been specifically developed to provide a DPM or to suppress residual moisture in concrete slabs and cement sand screeds that are dense, well compacted and sound, where readings of up to 98% RH can be accommodated. Accommodates Hygrometer readings up to 98% RH. You can lay a fast track DPM (damp proof membrane) if your new concrete has had 2/3 weeks drying time. A suitable gauge damp proof membrane (DPM) and thermal insulation must be provided. 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. NO MORE DAMP EP40. Download it for free and learn how to. I decided to lay down a laminate flooring over the vinyl tiles/concrete with chipboard style tile underlay. Browse damp-proof membrane products from Toolstation here. Add to basket. Quite likely there is no DPM underneath. Chimney damp proof course (labour and scaffolding not included) £75 per roll. ) chrysotile (white) asbestos fibres. Test Area CoverageHitting off the 1" top screed, applying a liquid DPM paint sealer to the 3" concrete underneath, then a 1" layer of latex over the whole floor to level it off. Hi All come across this forum and would really appreciate some assistance. Resistant to frost and salt attack. 27 November 2019 at 11:51AM. £. 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. DPM Membranes for Concrete Floors . The bitumen is less than a millimetre thick - painted on by all accounts. Jul 13, 2011. so what liquid dpm should i use. 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. Thin Micro-ToppingProduces durable surface to color or stain. advise that you apply one coat of DPM. Liquid DPM 5L Rating: 100%. 00 Ex VAT. No, can work well in very old brick buildings, but the pressure injection stuff relies going into a mortar course, it wont usually impregnate the stone (depending on the stone). On walls,. coating to create a key for the screed. #3. Liquid Damp-Proofing Systems. The DPM and adhesive will work in unison to improve the overall level of moisture protection. 100% solids, high build coating. Self Leveling OverlayFind the overlay to meet your project's needs. Concrete Cured for min. Contact. is this a concrete ground floor? were the marleytiles stuck down with a yellowish adhesive, or a black, bitumous coating?. The old floor tiles do contain a small amount of asbestos ( Marley tiles etc. UK Requirements for DPM Thickness. Call us for project specific advice and pricing on 01925852225. Lancashire. 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. #4. Sika Waterproofing Overlap Details SWOD - CAD Booklet is a PDF document that provides detailed drawings and specifications for various waterproofing solutions by Sika, a global leader in construction products and systems. 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?A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. 6 m2 1. The easy application is carried out in two coats with a brush or roller. Covered the whole floor and went up the wall 2" on all sides. 4. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most. It is suitable for use as a one or two application depending on the moisture content of the floor. The first answer is to paint the floor with SBR and neat cement in a 1:1 ratio then any cementitious will stick to that and it’s waterproof / condensation proof. See moreApply around the edge of the room using a paintbrush, and then use a pre-wetted short pile. Ideal for waterproofing structures, such as culverts, retaining. 22 Feb 2007 #1 11,422. Apply wall. Withstands 98% RH.