Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. This Epoxy DPM is a two-component, solvent-free, low odour epoxy resin membrane that is tolerant of residual moisture in concrete floors. 7,856 1,619 113. Now the floor is flat the DPM can be applied to seal the concrete. If the DPM Primer is being used. Add to basket. 30 Dec 2018. Insulation sheets and steel laid on top of plastic membrane. How to apply Damp Proof Paint. Ensure the top surface of the beam and block structure is levelled with grout or a levelling topping. Browse our selection of damp roof membrane (DPC) for use on concrete to prevent moisture from seeping through layers of flooring. Please Note: Most wood floor manufacturers state a maximum substrate moisture content of 2 % CM (ca. 22 Feb 2007 #1. In my 1930's extension, the solid wall has an existing DPC but the concrete floor has no DPM. How to Damp proof a floor and walls using synthaproof as a damp proof membrane is shown in this tutorial. Suitable for internal and external use. A small risk of them blowing if moisture is excessive though. If. 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. Impatience and damp concrete subfloors. The most popular screed types include cement screed, anhydrite screed (also calcium sulphate screed), mastic asphalt screed and dry screed. The black "rubbery stuff" could well be a layer of bitumen which was used as a form of DPM in houses from around (AFAIK) WWI period or a little earlier up until the 1970s in some areas. I have a fairly damp & uneven concrete floor, probably about 20 years old or more. The schedule of works from the loss adjuster (provided by Blyth Group, contractor), says the following regarding the floor: Apply self-levelling compound. Add to Basket. You can use Liquid Damp Proof Membrane with a glued down or floating floor. There are also dimpled underlay mats that disperse any moisture to the edges of the room but I have less experience of those. It can also be used as an adhesive for the likes of wood block flooring and insulation boards, or as a plaster bonding agent – even on difficult surfaces. 5 m²/litreCurrently, the floor has crappy ceramic floor tiles stuck down with pretty minimal adhesive onto the concrete, which in turn has had a thin layer of bitunimous liquid DPM poured onto it in the past. A water based product would have taken a month to. The guy doing it tried to compensate by using more adhesive and most of the. 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. £. 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. When stripping the bathroom, the area under the bath tub was bare concrete, lower than the rest of the "black" floor throughout the property. DPM Primer is a system for substrates that have a residual moisture level greater than 75% RH. Hold up the low end of the level until the bubble is in the middle and then measure the gap between the floor and the raised end of the level. Hardwearing – high abrasion resistance. 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. 00 Ex VAT. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most. £30. 40 inc. Can be used where a structural DPM is not present or is ineffective. Contact. 15 m2 1. 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). Any recommendation on products to use- most I've found say only suitable for concrete, I've only found multi tite 2k suitable for both but it's not cheap. I have an out building/utility (15-20 years old), built by previous owner. . a) 3 coats of synthaprufe liquid DPM to wall running 1 course below DPC and 2 courses above. Bit confused with all the different products and combinations though. If the coating is not for your final decorative surface. Our epoxy DPM products create a new damp proof membrane in a highly. Hi. 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. Ready to use. You should use them to protect all final floor finishes. The coating cures to form a rubber-like elastomeric waterproof membrane and may be applied over many substrates, including asphalt, bitumen and concrete. A damp-proof membrane is a layer of material usually laid below concrete floors during construction. 22 Feb 2007 #1 11,422. Not much really if you don't want to undertake any building work. GaryTheTiler said: Sound like you don't have a damp membrane under the concrete or a leaky pipe under the floor perhaps. Can be applied to damp surfaces. Never had damp floor in the 4 years of ownership. 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. weberfloor DPM can be applied on substrates such as concrete and cement-based levelling compounds. 00 Excl. then a liquid dpm will need to be used as well as a 3mm thick latex layer as most adesives wont bond properly to the dpm. 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 bitumen is less than a millimetre thick - painted on by all accounts. so the whole floor is 25mm lower and then just use a self-levelling compound Pros. Good afternoon. £750 - £3,000. Liquid Epoxy Damp Proof Membrane - 5kg. Tried and tested and it works. The black layer is possibly the adhesive from the previous floor such as thermo plastic tiles or parquet. 00 Inc VAT. We have two system recommendations for new build installations. The use of damp. Category: Floor Treatment Tags: Damp Proof Membrane, Damp Proofing. Two coats will provide protection up to a maximum hygrometer reading of 95% RH. 00. Drybase Liquid-Applied DPM is water-. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. This can include timber floors, tiles, laminate flooring and carpet. Sika Rapid DPM is intended for priming and sealing absorbent and non-absorbent subfloors, Also suitable for. 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). It is available in red or yellow, in 5 or 10kg units, and has a fast curing time of 12 hours minimum. Property is mid 1960s, solid ground floor. No need for a separate primer. Last edited: Sep 2, 2010. The principle of tanking is to provide a continuous waterproof barrier or membrane; this is created using either mastic asphalt or proprietary adhesive DPM. Small hole dug through 2" soft sandy concrete to reveal hardcore and soil. 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. 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. The lower sand ratio means a higher ratio of cement, which gives a stronger mix. £100 - £600. 2 coats liquid DPM. [email protected] Nov 2016. Pretty simple fix; Cons. You have maybe 3mm of smoothing compound hence it can be pushed up and fail. Installing tanalised 4x2 soleplate 2" from the wall over the DPM but with a DPC below, screwing down through both into the concrete, then bringing the DPM up the back of the soleplate for a nominal distance. 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. Standard sand & cement screed, dries at approx 1mm per day, depending on variables. Grinding the old bitumen from the concrete floor. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. not a good idea man. Liquid DPMs gave the best protection but were more expensive. 2. coating to create a key for the screed. Yes, concrete is often exposed to the elements, which can cause it to crack. Could use sand/cement mix if ‘craters’ are. Drybase White Liquid Damp Proof Membrane - 1L Drybase® Liquid applied DPM is a single pack barrier coating for above ground use. I am assuming its asphalt with a bitumen top layer, 10-15mm thick. Technoseal Floor DPM. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. Thin Micro-ToppingProduces durable surface to color or stain. Applications. Answered 22nd Aug 2016. Jul 13, 2011. Step-by-step guide for how to apply liquid DPM for concrete floors. you need to dig up the old concrete then lay a couple inches of sharp sand. advise that you apply one coat of DPM. 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). Prepare substrate. There is a membrane underneath the concrete slab which has been poured and it comes up and meets the dpc. Gallery. Last edited: Sep 2, 2010. Polycote DPM Primer is a superb twin pack high-performance epoxy coating that is designed to penetrate into the concrete and completely lock the surface from rising damp. 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. 3. Clean quarry tiles. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. This also ensures that the curing process is gradual, which can prevent cracks from forming. For solid wood the absolute maximum moisture level in concrete is 4%, ideally it should be nearer to 3% - your flooring manufacturer should have issued Tech Info sheets which cover their requirements in detail. Can be over painted after 16 hours with most types of floor coatings. It helps to prevent damp and moisture from entering the building’s structure and interior. These can over time allow a build up. Basements: As part of a waterproofing system beneath ground level. 28 days or sealed when set with one coat of ARDEX HydrEpoxy WPM 300 at a coverage rate of 3. So I have a concrete floor in the kitchen (concrete - DPM - 50mm screed), knocked through into the outside toilet which just had soil floor. The membranes can sit above or below the slab. Unfortunately the concrete floor is not levelled and is about 2-3 cm lower on on side of the room plus there are other uneven parts of the floor. The vinyl being laid before the concrete has dried out. It might seem a bit unusual. The only way to tell properly, is to carry out a proper test. Traditional screeds. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. free from dirt, dust, grease or other contamination or coating. Liquid DPM 5L Rating: 100%. See full list on thediyfix. Broom Overlay Mix 6000 PSIAdd water and mix - Grey or white. Thick, flexible coating resists movement and minor cracks. The biggest advantage of using a liquid Damp Proof course, is that you do not have to rip up concrete floors. The products have excellent adhesion to damp concrete and can be installed fast and easily, even at lower temperatures. 186. 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. Step 3: Lay the watertight membrane. For a self-levelling screed a system such as Flowcrete UK’s Hydraseal would be used. Most damp-proof floor coatings are applied directly to the concrete floor surface using a brush or roller. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. Brian McNaughton & Son Ltd. Would that be ok or would it sink?. Obviously if its a surface DPM you dont have a few inches of concrete to weigh it down. Liquid dpm/levelling compound. I would think a strip out and start again would be your best option, you should consider where/why there is water evident before. It helps to prevent damp and moisture from entering the building’s structure and interior. A flexible and resilient barrier to damp on walls and floors, this product is a rubberised, bitumen based emulsion that can be applied to concrete floors as an alternative to. Laminate uses underlayment which can cause same thing. The type of coating is chosen, depending on the usage of the floor. Rapid Set Skim CoatRepairs, levels, and smooths concrete for applications. Drybase White Liquid Damp Proof Membrane - 1L Drybase® Liquid applied DPM is a single pack barrier coating for above ground use. 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. Covered the whole floor and went up the wall 2" on all sides. - finish with a self levelling compound. Grinding the old bitumen from the concrete floor. may then be applied. Liquid DPM 5L. Applications. Thanks. It provides a dry barrier against moisture and can be painted over with resin-based coatings or overlaid with other floor coverings. 60 – £ 110. applying 2 coats of Drybase® Liquid DPM. #4. In certain situations, i. Old coal cellar, half is decent concrete but the other half has a bitumen type coating already. Sikabond Rapid DPM is a solvent free reaction curing resin primer and damp-proof membrane for cement based substrates. TYPICAL USES. Virtually solvent free liquid epoxy resin damp-proofer. Damp survey. It has to breath to survive. In subfloors with readings in excess of 75% relative humidity (RH), the use of surface membranes will suppress residual moisture, which can dramatically shorten project schedules. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. If there was no dpm I would suggest a uniformal distribution across the whole floor. 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,. Two coats will provide protection up to a maximum hygrometer reading of 95% RH. 2 coats SBR. 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. As mentioned above, for very new concrete a dpm primer, such as FS Epoxy DPM Primer, should be used. However, this option may not be the best solution in many circumstances. 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. Synthaprufe Original exhibits low odour, with exceptional flexibility and crack resistance, even at low. Damp-proofing floors with damp-proof membranes is best done by professional contractors. A liquid-applied DPM (damp proof membrane) is a simple solution and an excellent way to damp proof a concrete floor. The concrete slab was usually 100 to 125mm thick. PermaSEAL Damp Proof Paint 5L. Add to basket. Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m (47163) (55) compare. Country. Our Liquid DPM paint that can be applied above and below screeds to provide an elastic damp proof membrane for floors. A DPM coating is your best option for existing floors that are experiencing dampness, as it doesn't require removing any concrete slabs. Preparing the Oversite u2013 The Extension that 10k Built . If your slab is above DPM, I cannot see why you say. Ideal for waterproofing structures, such as culverts, retaining walls and bridge abutments, this Black Jack DPM is also commonly used for general waterproofing. If a DPM has failed or perhaps was never installed in the first place, the features. ARDEX DPM 1 C. 1. T1000 Stampable OverlayFor use with resurfacing concrete floors and hardscapes. Liquid DPM can be applied to the base layer using trowels, rollers, squeegees or brushes. Best Glossy Sealer: Black Diamond Stoneworks Stone Sealer. 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. 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. 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. Do I have a DPM? EDSDIY; 23 Jul 2020;Best to use the dpm as the soil will draw some of the water from the concrete which can cause it to crack . Tanking should be provided wherever a floor level is below ground level. Withstands 98% RH. 99 Inc Vat. The old floor tiles do contain a small amount of asbestos ( Marley tiles etc. 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. Which type of coating is chosen will depend on the intended use of the floor. Our epoxy DPM has good chemical resistance to mild. Id be tempted to run a dpm across the floor and up behind the skirting. Description. 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. co. !! 2 Coats is good - 3 is better still. 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. 5m) It will have 50mm insulation boards on top of it, followed by 18mm/22mm. It is important to. Add to basket. For further help and advice with damp proofing and Liquid DPM please call our product experts today. First scrape up as much of the residue as possible apply a cote of Ardex. DIYDave. 99. I know that involves removing the skirting, butbthen you can chip off a strip of plaster if it goes down to the concrete floor. Oldroyd Xs. #3. You also mentioned that there are vinyl tiles over the floor. Temperature, air flow and type of mix, being just a few. Can be over painted after 16 hours with most types of floor coatings. Laying a DPM over the floor slab (not sure on the integrity of the one below the slab so just in case. Bostik's damp proof membranes provide essential moisture mitigation and suppression for subfloors, helping to protect your installation for years to come. Lancashire. Liquid DPM 5L. Insulation sheets and steel laid on top of plastic membrane. 19. Manchester • Member since 5 Jun 2015 • 64 jobs, 95% positive feedback. In about 6 hours, it may be completely hardened and ready for use, depending on the flooring material being installed on top. Fast curing – ready to tile or recieve smoothing compounds in 4 – 5 hours 2 Component, solvent free, One Coat DPM Suitable for use on surfaces with a moisture reading of up to 98% Relative Humidity (RH) Weight. Since 1991, Polycote have laid millions of square metres of epoxy floor paints and coatings in almost every environment throughout the UK. 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. Polymer based liquid DPM to resist the penetration of gases (including radon), vapours and liquids. Drybase® Liquid-Applied DPM is suitable for use on solid floors, embedded timbers and floor-to-wall. NO MORE DAMP EP40 Floor Primer is designed to soak into the substrate, block pores, improve adhesion and ensure an even, high quality finish. case of un-bonded screeds. Floors can also be susceptible to moisture ingress, especially concrete floors. 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. g. the DPM and new floor can then go on top of this. 7 days or sealed. jay said: As above you may find it difficult to find a tile adh manufacture who will grantee their product over the membrane. :thumbsup. 1200 Gauge DPMs should be used when a floor is direct to the ground. I'm not 100% convinced they are asbestos tiles - but I best err on the side of caution. Step-by-step guide for how to apply liquid DPM for concrete floors. It should accommodate 0mm to 5mm (or thereabouts) It will cover an area of 26m2 (4m x 6. 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. 60 – £ 110. Reaction score. A few months have passed since then and is now on average 2. Run a string across the ground. 00 € 60. A water based product would have taken a month to. Please Note: Most wood floor manufacturers state a maximum substrate moisture content of 2 % CM (ca. Drybase Liquid-Applied DPM is a single-component two-coat paintable damp-proof coating that is easily applied to substrates by brush, roller, or spray. Where the product is laid onto a concrete surface wh. 16. 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. Damp survey. MR HARRY Member. 18 Dec 2013. I need to put down a damp proof membrane and self levelling compound on top of that. Apply prior to laying laminate or wooden flooring, over wall-to-floor junctions. I’d like to install a liquid DPM but currently have an existing screeded concrete floor that sits above the DPC. Can be over painted after 16 hours with most types of floor coatings. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. Add to basket. 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. A: A damp proof membrane (DPM) is a thick plastic sheet used as a waterproof barrier between a concrete subfloor and wood floor. Damp-Proof Floor Coating. Protects the floorcovering from residual construction moisture and ground water vapour. 3 - 12 % CM for magnesia flooring (proportion of organic parts). 11 Aug 2022. Internal or external applied waterstops based on PVC, TPO or galvanised steel for construction and movement joints. Liquid Epoxy DPM - 2. Speak with a technical adviser if unsure. 33. Unlikely to have any DPM. Bostik Screedmaster Rapid DPM is a ready for use; one part, water-based damp proof membrane. Country. 27 November 2019 at 11:51AM. To provide a waterproof barrier between the wall and floor. This told us tha. £36. It can be applied to damp floors and maintains excellent adhesion. 1. . Hello all, We have a 10 year old downstairs shower set on the existing concrete floor of a 60's house. £36. Do you have any damp problems currently?. If the straightedge tips to one side, your floor may have a raised bump in it. 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. 2. How to do Damp Proof Membrane of your sub-floor. 8 Apr 2013. Don't use a bitumen at all, you are correct eventually your screed will fail. 1. More than two applications are needed for the best results. We’re specialists in supplying and installing liquid flowing floor screeds to customers across the Midlands. Walls appear to be dry & are mainly concrete block. If a DPM has failed or perhaps was never installed in the first place, the features. Broom Overlay Mix 6000 PSIAdd water and mix - Grey or white. If not then you have rising damp which a liquid dpm is not designed for anyway. 3. 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 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. Install bituminous DPM 2 coats. Chimney damp proof course (labour and scaffolding not included) £75 per roll. 30 Jan 2022. dried sand broadcast into the wet. Thread starter rifraf74; Start date 22 Feb 2007; R. free from dirt, dust, grease or other contamination or coating. Tiles came up very easily with zero bitumen attached. Hi, Just about to put a liquid DPM down on a concrete floor. When designing Type A structures (as classified in BS. We have had a damp survey and it is confirmed that there is no issue with rising damp. Laitance must also be removed from concrete. Liquid DPM and waterproofing paint to waterproof and damp proof your property. 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. By digging to locate the initial leak we have gone down 3. J. Find out the benefits, advantages and steps of installing a liquid epoxy DPM for existing or new concrete floors. Sussex. #5. Sikalastic®-800 HA is a two component, solvent free, highly elastic, virtually odourless polyurea based waterproofing membrane. 16. 00 Ex VAT. Recommendation is that the floor is re-laid with a damp proof membrane (as a DPM would not originally have been installed). It can also be lapped up walls to the DPC before the application of floor and wall coverings. The report says there is no DPM. Liquid DPM for walls & floors. Can be easily applied by brush. Best Sealer for Basements: RadonSeal Concrete Sealer. Can be used as a damp proof membrane and as part of a designed structural waterproofing system. Temperature, air flow and type of mix, being just a few. Clear. Up to 10 years warranty on selected items. DPM Membranes for Concrete Floors ; Damp Proof Course; Damp Proof Paint;. We have had a damp survey and it is confirmed that there is no issue with rising damp. Visqueen EcoMembrane DPM. 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. Jord86 Screwfix Select. 2 coats SBR. Thread starter rifraf74; Start date 22 Feb 2007; R. Most important thing here is to prime the bitumen and concrete repairs to get a good bond between tile adhesive and floors. @Joe87 there are surface applied liquid dpm products available that you could use on top of that floor which would get rid of the issue of rising moisture affecting the new timber floor. • 1 or 2 coat application. DPM is Laid and Sealed! » Roselea. For RH readings above 75%, the subfloor must be left to dry out further. Covering the concrete with plastic can help to keep it cleaner and stop it from cracking. The VPU-155 S is a versatile primer easy to apply by either trowel. Holds back rising damp where a damp proof membrane is either missing or defective. DIY Concrete Floor: Pouring Slab 3/3. The concrete floor might only be 6 years old but theres no way of knowing if the DPM underneath was. £36. The potential issue that came to mind is, if, the concrete floor is absorbing moisture from Sub-soil for instance, ( also check for the presence of. The DPM and adhesive will work in unison to improve the overall level of moisture protection.