Answered 22nd Aug 2016. 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. But too much water will extend the drying time and. Which type of coating is chosen will depend on the intended use of the floor. rogerk101, Mar 13, 2020. By digging to locate the initial leak we have gone down 3. Liquid DPM to reduces the potential mois-ture related problems. 00 € 60. I would. On walls,. We have a concrete floor with 70mm insulation board over which the builder will be pouring 70-80mm screed. The whole floor is concrete and has a section about an inch deep where the fireplace used to be. Applications. Just spoke to uzin tech, I can use l3 gold 1st, then 414 rapid dpm, 280 primer and top with l3. The DPM will be laid first, usually as a liquid product 'painted or trowelled' onto the concrete surface, then the screed laid over that. may then be applied. 99 Inc Vat. Basically it was laid like this: timber frame built on top of garden dirt. Liquid Damp-Proofing Systems. 15 m2 1. For further help and advice with damp proofing and Liquid DPM please call our product experts today. External wet concrete should be allowed to dry thoroughly or sealed with one coat of ARDEX HydrEpoxy WPM 300 as above. The old floor tiles do contain a small amount of asbestos ( Marley tiles etc. 00 Ex VAT. Liquid DPMs gave the best protection but were more expensive. 21 May 2010. Self Leveling OverlayFind the overlay to meet your project's needs. Once dry apply two coats of Drybase® Liquid DPM as normal. Last edited: Sep 2, 2010. Showing 1–15 of 21 results. I would advise a single part flexi tile adhesive on top which will enable you to have stone, ceramic or porcelain tiles fixed. 1. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most. 1. If there was no dpm I would suggest a uniformal distribution across the whole floor. On average, the cost of screed flooring will be around the £250 mark, depending on various factors. where the ground was uneven or where there were soft spots below the slab, it might be reinforced with a mesh. Membranes. Tanking and waterproof render up to a metre high will help, alternatively, do what they did 100 years ago. The Marley tiles have now been completely removed. 30 Jan 2022. £51. Slimline floor membranes, on the other hand, are quick and easy to install and create an air gap that allows for finishes to be applied while the damp floor is still drying out. To provide additional insulation, tongue-and-groove wood-fiber board. I went to buy compound to level it yesterday, and now it looks nice. There are 2 adjoining concrete floors, one with a visible DPM underneath that ranges from 70mm-3omm and one that is relatively 'modern' and. 00 Ex VAT. This is a solvent, water free, epoxy resin and moisture tolerant curing agent that allows for immediate installation of moisture sensitive floor finishes onto concrete and. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. £750 - £3,000. An MVS, is a moisture vapour suppressant that is used on floors, usually concrete or cement-based screeds with up to 95% RH. The water pipe connected to the sink tap or the pipe taking waste water away from the sink (both of them are in the wall) is leaking and this water is going to the floor down the wall and is saturating the floor. 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. rogerk101 said: ↑. The damp proof paint is now ready to. £100 - £600. It seems like a self levelling floor compound is the best way to go. It helps stop moisture passing from one to the other. This is a solvent, water free, epoxy resin and moisture tolerant curing agent that allows for immediate installation of moisture sensitive floor finishes onto concrete and. Find out the benefits, advantages and steps of installing a liquid epoxy DPM for existing or new concrete floors. Our epoxy DPM products create a new damp proof membrane in a highly. 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. 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. Plenty of cement/latex/fibre based. The booklet covers topics such as joint isolation, thin set tile, termination, and utility finish. Thread starter rifraf74; Start date 22 Feb 2007; R. 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. A few months have passed since then and is now on average 2. I've used the two part resin on a damp concrete floor in an old Victorian place. advise that you apply one coat of DPM. Our easy to install range is available in various thicknesses up to 0. ARDEX DPM 1 C. Preparation is key with these coatings and the substrate must be sufficiently clean and dry. DPM Floor Membrane above Concrete Drybase Liquid-Applied DPM (1 L White) (In stock) ☆ ☆ ☆ ☆ ☆. 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. #4. The. Its wrong. 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. We have had a full structural survey done which highlighted damp at the ground floor level. LAC is typically used as a damp proof membrane to ground floors, as a vapour barrier behind cladding and for tanking of basements. £30. 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. Rapid Set Skim CoatRepairs, levels, and smooths concrete for applications. Good afternoon. Jord86 Screwfix Select. The concrete floor is below the DPC level so currently gets damp. Please Note: Most wood floor manufacturers state a maximum substrate moisture content of 2 % CM (ca. Holds back rising damp on new or old concrete and sand and cement floors. DIYDave. Accommodates Hygrometer readings up to 98% RH. You’ll want to make sure that you over-roll. When stripping the bathroom, the area under the bath tub was bare concrete, lower than the rest of the "black" floor throughout the property. Speak with a technical adviser if unsure. #1. Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. PermaSEAL Damp Proof Paint 5L. I need to put down a damp proof membrane and self levelling compound on top of that. Damp-proofing floors with damp-proof membranes is best done by professional contractors. Country. Easy Handling & Installation. 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. It's brilliant stuff and the new glueless karndean can literally just sit on top. All surfaces must be mechanically sound, dry and clean, i. . Most important thing here is to prime the bitumen and concrete repairs to get a good bond between tile adhesive and 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. However, should there be a particularly high water table/pressure and/or a particularly porous floor, two coats. Upper floors are airtight timeframe. Clear and brush an area of the garage floor so that it is totally free from any loose materials. Walls: Can be used under render or plaster as a water barrier or. water will be likely to collect between the DPM and the old floor. It had not been used for over a year to allow it to dry out. . Lancashire. 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. It is available in black or white with a consistency similar to that of thick emulsion paint. . A decent fitter will test the slab for you before fitting anyway. fillyboy, Oct 11, 2018. In certain situations, i. A damp proof membrane will commonly be laid during the construction of a concrete floor in a new build to protect the floor from rising damp. Can I assume we have already breached the. The plan is to get an concrete sub-floor so that things will adhere to it properly then to go with Arditex NA, then the DPM, and then. However, this option may not be the best solution in many circumstances. Applications. liquid dpm and self levelling compound. 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. Concrete Cured for min. It is available in red or yellow, in 5 or 10kg units, and has a fast curing time of 12 hours minimum. It is available in black or white with a consistency similar to that of thick emulsion paint. Drill then fix the damp proofing membrane to the walls ensuring a tight fit. From below, installing insulation to improve the floor or as part of a basement insulation project is fairly straightforward. Browse our selection of damp roof membrane (DPC) for use on concrete to prevent moisture from seeping through layers of flooring. You are. apply two coats of Drybase® Liquid-Applied DPM as normal. The important things to be considered are: The concrete substrate is: reasonably level; free of mortar matrix;. Since 1991, Polycote have laid millions of square metres of epoxy floor paints and coatings in almost every environment throughout the UK. 3. 17DW400. There is no damp proofing on the floor. Day 3, mix and level. The type of coating is chosen, depending on the usage of the floor. Ashbou10 Member. Temperature, air flow and type of mix, being just a few. Country. #3. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. RFC Epoxy Damp Proof Membrane is a professional 2-component applied surface primer for brushing onto concrete floors and fine concrete screeds. I have an uneven concrete floor inside. Liquid dpm/levelling compound. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. Hi, I had a kitchen extension built with a concrete floor approx 18 months ago. No problem when it is ventilated, soon as you remove the ventilation by covering it with a non-permeable substance (vinyl floor, liquid dpm) then the damp (and mould) will recur. Ready for your floor finish. • Protects walls and floors from water ingress and dampness. 2. Blue 1. Contractor wants to paint Sika Primer MD on top of the self leveling compound. You are essentially painting a concrete floor, after all! But it is an effective way to do it. Liquid Epoxy DPM - 2. Self Leveling OverlayFind the overlay to meet your project's needs. Now cut a small square of plastic around 100mm x 100mm and, using plastic tape, tape it to the floor area on all. UK Requirements for DPM Thickness. We are proud to have over 20 years experience of. Hi, We've just finished pulling up old quarry tiles ready to fit new Porcelain tiles throughout! Had to remove quarry's due to levels of external doors, were unsure what the subfloor is beneath the quarry's, I believe the property is prone to rising damp seeping through subfloor as no DPM. I decided to lay down a laminate flooring over the vinyl tiles/concrete with chipboard style tile underlay. I am buying a property and a survey has shown that the solid ground floor (likely concrete slab) is damp in some parts and is also uneven. This can be due to: Moisture rising through the concrete. Still have moisture coming through (I think), and after further reading, 50mm of concrete is required to 'hold it down' and stop penetration. £36. 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. The wrong adhesive being used to lay the vinyl, or. 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. 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. Vapour Barrier vs Damp Proof Membrane. The product is applied in two. Shave 25mm off the concrete slab in the middle of the room. Part of this improvement was to remove a wall to open the kitchen up into the adjacent room. Then 100mm insulation and 18mm ply as a floating floor system. £30. Drybase Liquid-Applied DPM is water-. The bitumen is less than a millimetre thick - painted on by all accounts. 5kg. Hi All come across this forum and would really appreciate some assistance. If the problem is moisture, lift the vinyl and allow the concrete to dry properly. Tanking should be provided wherever a floor level is below ground level. It can be applied to damp floors and maintains excellent adhesion. IKOpro Synthaprufe Original is a BBA Approved (cert no. 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. Once applied via a roller the compound creates a. applying 2 coats of Drybase® Liquid DPM. Tiles came up very easily with zero bitumen attached. Ground-bearing concrete floor slabs should be protected against ground moisture by providing a continuous damp proof membrane (DPM). #5. #1. Hadley General builder/plasterer. You will more than likely require a DPM and screed before any flooring is fitted and always a DPM for wood on a concrete base, your flooring professional should be doing. d) I have read I need to lay 25mm of insulation up the edge of walls to DPC. You may need to apply a damp-proof epoxy coating to the concrete before laying a new floor. Day 2, 2 coats of your dpm. Liquid screed. rifraf74. Jan 20, 2016. Wood and Beyond propose the use of vapor barrier with all. General waterproofing: - for use on concrete,Liquid-Applied Membrane. rifraf74. weberfloor DPM can be applied on to concrete or cement based screed. Quarry tiles are installed on the solid concrete slab which is a good. 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). We have become a bit obsessed with checking the dampness so bought our own damp meter suitable for checking concrete,. where the ground was. I would think a strip out and start again would be your best option, you should consider where/why there is water evident before. 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. jay said: As above you may find it difficult to find a tile adh manufacture who will grantee their product over the membrane. and then apply a second coat with kiln. Ashbou10 Member. DPMs come in solid or liquid form, the latter being a practicable solution for a garage conversion. 1. 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. There is no dpm under the concrete slab so I will be coating the floor and walls with ka tanking slurry. £. Could use sand/cement mix if ‘craters’ are. Fitting floor insulation tends to be far more straightforward when starting from scratch in a new build or extension. Now the floor is flat the DPM can be applied to seal the concrete. 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. #2. The principle of tanking is to provide a continuous waterproof barrier or membrane; this is created using either mastic asphalt or proprietary adhesive DPM. 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. Use 1000 gauge or thicker – ideal for this is the polyethylene use for the DPM under your concrete subfloor. An ARDEX Damp Proof Membrane will protect the floorcovering. New concrete subfloors or sand/cement screeds should be left for a minimum of seven. A damp-proof membrane is a layer of material usually laid below concrete floors during construction. 30 Dec 2018. ) chrysotile (white) asbestos fibres. Personally would look for breathable systems like they use a lot in Italy where the buildings are often very old. Grinding the old bitumen from the concrete floor. Chemical damp proofing cost. I have removed all the old layers of old flooring down to the concrete. 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. e. 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. Liquid epoxy DPM is often used as a remedial solution for existing concrete floors, as it creates an impermeable layer that keeps water in the concrete slab. Liquid damp proof membrane For existing concrete floors, you can also apply a liquid damp proof membrane, which provides a retrospective damp proof membrane. 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. Once applied, it cures to form a flexible and elastic membrane that. 2 coats liquid DPM. It stops around 10mm away from the internal walls in all rooms. CONCRETE FLOOR 8 9 Our refurbishment system is ideal for older properties with damp or contaminated floors. Proposed floor is pitch pine boards secret-nailed to 2 x 2 inch battens with insulation between, onto a concrete floor not known to have a DPM under it; therefore, DPM to go under the battens. It helps to prevent damp and moisture from entering the building’s structure and interior. 22 Feb 2007 #1 11,422. A DPM coating is your best option for existing floors that are experiencing dampness, as it doesn't require removing any concrete slabs. 2. 21 Sep 2016. 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. The floor was vacuumed before applying Aredx DPM IC, an epoxy liquid Damp Proof Membrane (DPM). About. Before applying the damp proof paint, stir the contents of the bucket well. I'm fairly certain the bathroom was actually an outhouse or a brick shed and the main house was extended to join up with it. If a DPM has failed or perhaps was never installed in the first place, the features. Option 3 – Apply a liquid DPM. Just looked at a job. Basements: As part of a waterproofing system beneath ground level. Install bituminous DPM 2 coats. Pretty simple fix; Cons. Arcon have a range of liquid applied damp proof coatings available to buy with no minimum order quantities. 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. case of un-bonded screeds. rogerk101 said: ↑. 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 level. Hi, Just about to put a liquid DPM down on a concrete floor. The use of damp. The schedule of works from the loss adjuster (provided by Blyth Group, contractor), says the following regarding the floor: Apply self-levelling compound. Damp proof membrane paint is a liquid DPM that blocks the action of penetrating damp on floors, ceilings, and internal walls. £. Description Sika Rapid DPM (Damp Proof Membrane) is a solvent free reaction curing resin for use on cement based substrates. 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. However there is a dpc cavity tray. ) 4. The product is applied in two coats. 2 Feb 2011. 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. In a house with a DPM already installed you will have a few inches of concrete to weigh the dpm sheet down. For RH readings above 75%, the subfloor must be left to dry out further. Damp survey. T1000 Stampable OverlayFor use with resurfacing concrete floors and hardscapes. 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. . Whoever did the repair once the fireplace was taken out didn't bother putting. Liquid DPM 5L. Getting someone to do a damp test to find out the relative humidity RH% of. E. 40 inc. 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. 2020-05-24T11:35:02+01:00 Answered 24th May 2020Liquid DPM. 41. I’d look up the manufacturers guidelines if I were you because if the floor warps at all then you’ll have no recourse with the manufacturers as they’ll say there was moisture present. Liquid DPM 5L Rating: 100%. £. It is available in black or white with a consistency similar to that of thick emulsion paint. If your slab is above DPM, I cannot see why you say. A: A damp proof membrane (DPM) is a thick plastic sheet used as a waterproof barrier between a concrete subfloor and wood floor. 60 – £ 110. Limelite Easy Bond 5kg - Breathable Primer £55. A water based product would have taken a month to. It has to breath to survive. F Ball DPM F77 Liquid DPM on concrete floor. Download it for free and learn how to. You also mentioned that there are vinyl tiles over the floor. Tanking should be provided wherever a floor level is below ground level. If there was no dpm I would suggest a uniformal distribution across the whole floor. Applications. £750 - £3,000. Liquid DPM for walls & floors. So I have a concrete floor in the kitchen (concrete - DPM - 50mm screed), knocked through into the outside toilet which just had soil floor. I have a fairly damp & uneven concrete floor, probably about 20 years old or more. or self level to adhere to. The problem is by the time we insulate, screed and lay the flooring we will be above the dpc& membrane level by 4 inches. Needs a liquid dpm and smoothing from 7 to 25 mm. 00 Inc VAT. Mix. Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. 1200 Gauge DPMs should be used when a floor is direct to the ground. Sussex. IN CONCRETE SUBFLOORS British Standards 8201:2011 recom-mends using relative humidity (RH) testing of concrete sub floors. DIYDave. Self levelling and liquid damp proof membrane. Suitable for heavy wear areas, concrete floors where a DPM has failed or was never installed, or areas of damp concrete which cannot be surface dried prior to painting. Obviously if its a surface DPM you dont have a few inches of concrete to weigh it down. Acts as a bonding agent for plaster and curing agent for concrete. 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. Liquid DPM can be applied to the base layer using trowels, rollers, squeegees or brushes. uk and we will be happy to answer any questions and help find the right products to suit your needs. You can buy self-levelling floor screed compound from any DIY store. How to apply Damp Proof Paint. Ground-bearing concrete floor slabs should be protected against ground moisture by providing a continuous damp proof membrane (DPM). How to do Damp Proof Membrane of your sub-floor. • Weatherproof protection for walls, above-ground structures and foundations. Once applied via a roller the compound creates a barrier between the concrete and wood flooring. Laybond Screedmaster One Coat Liquid DPM 2 part solvent free epoxy surface damp proof membrane developed to suppress residual moisture affording protection for the floor coverings, adhesives, smoothing compounds and primers used in flooring installations. Thick, flexible coating resists movement and minor cracks. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. Self levelling compound. 60 – £ 110. 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. Manchester • Member since 5 Jun 2015 • 64 jobs, 95% positive feedback. 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. 2. Damp proof membrane paint is a liquid DPM that blocks the action of penetrating damp on floors, ceilings, and internal walls. It is important to. weberfloor DPM is a two-component epoxy based chemical damp proof membrane that is capable of being applied in one coat, dependent upon the condition of the substrate and quality of workmanship to ensure full coverage is achieved at the required thickness. It helps to prevent damp and moisture from entering the building’s structure and interior. Best Acrylic Sealer: Foundation Armor Concrete Sealer. I have an uneven concrete floor inside. 24-month shelf life. Our team answer thousands of questions every year, offering. and then apply a second coat with kiln. The easy application is carried out in two coats with a brush or roller. £36. This is a belt and braces approach to prevent any part of the floor coming in to contact with the wall. OK stuck - Liquid DPM, concrete floor and a pipe. Stauf VPU-155 S DPM solvent free polyurethane primer: is a ready-to-use, one component polyurethane primer is particularly fast drying. Property is mid 1960s, solid ground floor. e. Oldroyd Xs. My questions are: Is there any reason to use a roll of DPM vs a liquid. You can use Liquid Damp Proof Membrane with a glued down or floating floor. underneath a screed or self level we. You have maybe 3mm of smoothing compound hence it can be pushed up and fail. 5m) It will have 50mm insulation boards on top of it, followed by 18mm/22mm. Preparing the Oversite u2013 The Extension that 10k Built . I see the advice is: *Primer *Acrylic Self Levelling Compound *Liquid DPM *Self Levelling Compound of choice However, I can't seem to find any acrylic based self levelling compounds.