Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. Self Leveling OverlayFind the overlay to meet your project's needs. Fully isolate the dampness in the floor using a surface Damp Proof Membrane (DPM) How much should DPM overlap? The purpose of DPM Care must be taken to ensure a) there are no holes or tears in the sheet that could allow water penetration and b) there is a sufficient overlap of sheets by at least 150mm should more than one sheet be required. Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. It really depends on what levelling compound was used, if it was ardex Na it would be fine to put a liquid dpm onto but not all compounds are the same. Drybase Liquid-Applied DPM is water-based. com. Drybase Liquid-Applied DPM is a single-pack barrier coating that is supplied ready to use. Consideration should be given to applying the DPM to the top of the. To apply liquid epoxy DPM correctly, build up multiple coats, always follow manufacturer's recommendations and ensure that the concrete surface is free of debris or organic matter. Provides sandwich damp-proof membranes for floors. Upper floors are airtight timeframe. Basement Tanking. 4- When dry (24hrs+) you can give first coat of dpm (F75) 5- Second coat of dpm (f75) when first is dry. Barcode 5029347009830. The DPM comes first in a liquid formula painted on and coloured so you can see how it's covered, then the screed. It is ideal for use on damp floors and walls, before the application of floor and wall coverings. i would uplift old flooring first and then use a moisture tolerant screed to level off, a 2 part liquid dpm that goes over 97%rh(moisture level), then a dpm sheet just to make sure , then jumpax boards. Iam a floor layer with 25 five years experience. Yes a liquid damp proofing product from most building merchants for masonry works will be suitable. Originally for the first room I used pva primer , wickes self levelling compound and then painted with wickes liquid dpm. 3. To help determine the cost of a screed floor let’s look at the average prices people pay. IKOpro Synthaprufe Trade is easy to apply and provides damp proofing for concrete floors, foundations and masonry walls below, at or above ground level. However, should there be a particularly high water table/pressure and/or a particularly porous floor, two coats. 73 Kg CO 2. Bit confused with all the different products and combinations though. 2. This may be due to the solum being lower than the surrounding ground levels around the property, the water. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. 2 - 0. The installation of a surface DPM. Liquid damp proof membrane (water based bitumen) applied in several coats directly to the concrete floor with a roller or brush. £89. Sovereign Liquid DPM & Gas Barrier (DrySure) can be used to protect most building surfaces from the effects of liquid and water vapour therefore suitable for providing a DPM on floors and in walls. View all: Sika Waterproof Sealants. £300. A highly effective sandwich damp proof membrane for floors and walls. A damp-proof membrane is a layer of material usually laid below concrete floors during construction. co. F. Can be over painted after 16 hours with most types of floor coatings. Resistant to frost and salt attack. Features. you risk voiding the warranty of the flooring by not installing on a dust free, flat smooth surface. DIYDave. Steele Wood flooring. Approximate Coverage. USES Commonly used in the following areas: Providing sandwich damp-proof. It helps to prevent damp and moisture from entering the building’s structure and interior. Joined 22 Jan 2007 Messages 15 Reaction score 0 Country. Mastic Asphalt – this is the earliest form of liquid DPM and is usually laid on the top of. Hi, I bought a new build last November, im just after a little info regarding whether to paint on a DPM or not? When the slab was poured back in June last year, the builder put in a dpm then insulation boards, radon protector thingy me bob , then more thick plastic sheeting, re bar/Mesh then the concrete was poured. 5m². It is laid on top of a subfloor to keep moisture at bay and ensure natural timber. Distributors Near Great Britain. Liquid DPM is a system that is used over a base floor. The easiest method is to push quilt-type insulation into the spaces between the joists from below. Below Floor Screed 1. Limitation: Do not directly bond wooden flooring to Drybase® Liquid-Applied DPM coated concrete. Then SL, this will take care of the craters and uneven sections from remaining tile adhesive. PermaSEAL Liquid DPM protects floors and walls from moisture in just two coats. Covers approx. OR. Currently there is no dpc/dpm in the wall, so lots of damp on the inside wall. TOOLSTATION have DPM liquid which we already use for floor. The biggest advantage of using a liquid Damp Proof course, is that you do not have to rip up concrete floors. Merseyside. Drybase Liquid-Applied DPM is water-. Learn more about DPM Membranes for Concrete Floors . 1st post for me but desperately after some advice as to why my self levelling screed is cracking. It can also be used to isolate embedded timber joists or to act as a. This is supported with netting tacked into place. Most important thing here is to prime the bitumen and concrete repairs to get a good bond between tile adhesive and floors. Answered 27th Feb 2012. Reply to Best liquid DPM in the Tiling Forum area at TilersForums. 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. ft. Then 2 coats SBR 1-4 diluted. Water appears to be entering at the wall/floor junction. 57,050 Kg CO 2. Use 1000 gauge or thicker – ideal for this is the polyethylene use for the DPM under your concrete subfloor. 40 Kg CO 2. Currently, 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. The internal floor is tiled, and I wont be lifting the tiles. Our products are all carefully selected by our in-house experts. Tape or tie the string to one side of the room. Primer 1. Originally for the first room I used pva primer , wickes self levelling compound and then painted with wickes liquid dpm. There are numerous contractors nationwide that will. Jord86, Jan 14, 2023. kez, Apr 22, 2019. It's just taken 5 days to dry (still tacky) and i'm being told we can't put self levelling compound on it, it needs to be screed. It is available in black or white with a consistency similar to that of thick emulsion paint. Also acts as a waterproofer for walls, above ground structures and foundations. In most cases the surface to be screeded will consist of 50 to 100mm-thick layers of insulation boards over a DPM (damp-proof membrane) on top of the floor structure. Drybase White Liquid Damp Proof Membrane - 1L. Id be tempted to run a dpm across the floor and up behind the skirting. Applications: Wet rooms Embedded timbers Sunken posts Floors (e. Generally these systems are a range of cold applied liquid waterproofing coatings. RonaScreed DPM is also suitable for use prior to the application of tiles, soft flooring or wood. So I have a block and beam floor which is 150mm below existing floor level. #4. It is not suitable as a bond coat on walls where Drybase® Flex Membrane or. Apply a coat of surface liquid DPM to the tiles like Ardex DPM 1c or stopgap F77 then prime and screed. , Jan 22, 2021. Altro Wood™ adhesive-free (5000m²) Altro Wood adhesive-free. 57,050 Kg CO 2. Easy to use by by brush and Industrial Roller Sleeve; Approximate Application rate. ★★★★★ ★★★★★ ( 3 ) Product code: 47327. And yes you can level the floor after. Using this latex based damp proof paint as a damp p. Liquid Epoxy DPM - 2. £30. Beam and block floors may need a levelling screed or grouting to ensure base level. ARDEX WPM 300 is a two component water based epoxy polyamide membrane/barrier coating. A surface DPM, which bonds to the surface of the concrete, minimises moisture vapour transmission. £107. 1. 4M X 5M 500G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Country. Your solid floor is porous (which is normal), trouble is water is getting into it either from underneath or from the sides. Features. Drying time of any brand and type of liquid DPM varies according to the application circumstances, e. USES For priming, consolidating and sealing of: Absorbent and non-absorbent sub-floors, consolidat-ing weak cement screed and isolation of old adhesive residues. Liquid DPM & Gas Barrier (DrySure) 5L. Two Pack. Rapid drying. 99. The specific liquid DPM system will depend on the type of substrate or screed. Drybase® Liquid-Applied DPM Is suitable for use on solid floors, embedded timbers and walls. 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. It is available in black or white with a consistency similar to that of thick emulsion paint. ft-24hrs. The stand-off studs create an air gap. I'm hesitant to lay self levelling. DPM added 1 to 2 mm extra then you have a 5-7mm self levelling screed on top then the width of these tiles and there bonding adhesive. Can be easily applied by brush. I moved into my new build nearly 2 months ago now and am having quite a few issues. 70 Ex VAT. personally i would concrete the whole floor to a level finish and paint it with anti slip. 16. , Jan 22, 2021. The liquid membrane forms a strong seal and makes a permeable layer to enable moisture to evaporate off. It is available in black or white with a consistency similar to that of thick emulsion paint. For a self-levelling screed a system such as Flowcrete UK’s Hydraseal would be used. 8 Apr 2013. Screwfix Select. M. By Alisa Crane July 8, 2022 Guides. Cement screed is the most commonly installed type of screed and averages around £12 per sqm. Because we were laying Karndean Flooring to a new extension we needed to check the % RH(relative humidity) of the concrete with a hygrometer. Our costs are ballpark averages – get a local tradesperson to quote now. required finish floor level. It can also be used on floors tanked with Sovereign Hey’di K11 when a vapour barrier is required. The readings I have from the floor hygrometer indicate there is a lot of residual dampness still in the screed - it probably has nowhere to go, if as suspected there is a DPM underneath it. evilgoose Posts: 532 Forumite. Sovereign Epoxy DPM is a solvent free two-part resin that chemically cures to provide a surface membrane. Damp survey. If a radon barrier is required, lay this over the grouting layer and extend it. Above or below ground, damp can creep up on you. Ask the expert: Can a Floor Levelling Compound be applied underneath a WSM? The nature of a subfloor impacts whether a WSM or levelling compound should be applied first. middle of a baking hot day in summer applied to a dry and subsequently warm surface, would take between 4 – 6 hours per coat. Discover important FAQs including what is liquid DPM, what is the best liquid DPM and more. The waterproof paint membrane dries to a flexible. < 2 Year Storage. Browse our selection of damp roof membrane (DPC) for use on concrete to prevent moisture from seeping through layers of flooring. The house is an ex-council 1950 semi. The engineer (who is a bit belt and braces) recommended a block and beam floor supported by new foundations so as not to add extra load to the existing 1930s foundations. Safe – no solvents and non-flammable. Brief background: After buying a 1960s semi in south Birmingham house last year, and spending the summer managing (a) complete rewire; (b) installation of satellite and Ethernet wiring to all rooms; (c) plastering to make good chasing from (a). It protects a subfloor, keeping it warm and dry for long-term use. 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. This is supported with netting tacked into place. Country. I would suggest also laying a new underlay which has a vapour barrier. £ 51. Great ridge formation and retention. Liquid epoxy DPMs are ideal for concrete floors, such as garages, where the original damp proof membrane is missing or has broken down. Our costs are ballpark averages – get a local tradesperson to quote now. Description. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. Information Liquid Waterproof Membrane. HydraDRY Tanking Slurry. A damp-proof membrane (DPM) is a membrane material applied to prevent moisture transmission. Distance from bison to existing tile surface is 55mm; this is ~10mm higher than kitchen floor ( there is a door threshold in-between. The floor has been coated but the coating does not run up the wall. Description. Isolates damp substrates for new floor finishes including carpets and laminated flooring. Damp or Contaminated Floor Solutions. 16. 100% solids, high build coating. For traditional screed, the usual total will fall within the range £18. Consideration should be given to applying the DPM to the top of the. Ideal for waterproofing structures, such as culverts, retaining. The guy doing it tried to compensate by using more adhesive and most of the. Tanking should be provided wherever a floor level is below ground level. € 99. The VPU-155 S is a versatile primer easy to apply by either trowel. Drybase Liquid-Applied DPM A ready to use liquid-applied damp-proof membrane. Floors don't need to breath. To provide additional insulation, tongue-and-groove wood-fiber board. M . Then if solid floor, Mapei Ultimate, SF, on special at moment and yes it’s available - again, click and collect only. Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. There is no DPM in or under the concrete floor and the parquet blocks will not be relayed. This barrier is intended to stop moisture passing from one to the other. Cement based coating for preventing water and damp penetration in walls and floors. The polyethylene needs to be curled up at the edge of the area to be screeded and stuck to the walls. There is no damp proofing on the floor. You can use Liquid Damp Proof Membrane with a glued down or floating floor. Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. How-to video with step-by-step instruction on how to apply liquid damp proofing, priming and then self leveling. It can be used for screeds, renders, laminate, joists and flood resilience. Liquid Epoxy Damp Proof Membrane 5kg (Metal Tin) Rating: 100%. Add to basket. This prevents moisture from the screed attacking the wood flooring and ultimately ruining it. Insulation sheets and steel laid on top of plastic membrane. Consult adhesive manufacturer. Compatible with all SikaBond wood floor adhesives. 60 per L. 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. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Hi Pete, I have the answer. Suitable for all areas of a home, DPM is available in a choice of fabric and liquid forms. Liquid floor screed is ideally placed at depths of between 50 -75mm in conjunction with UFH. OR. In older properties built prior to the 1950’s normally the solum areas are unsealed and are possibly damp. duncan303 Posts: 305 Forumite. Quantity: FREE Click & Collect within 30 minutes. Coverage: 1 gallon of Abocrete, without sand or aggregate, covers 80 sq. apply two coats of Drybase® Liquid-Applied DPM as normal. Ball offers a complete system for the measurement and control of subfloor moisture. You can level out an uneven subfloor easily by applying the mixture and leaving it to dry for up to 24/48 hours before walking on it. Liquid-Applied Membrane. 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. The build up of a ground floor would typically be: DPM, Slab, Insulation, Vapour Barrier, Floor Screed. Holds back rising damp where a damp proof membrane is either missing or defective. DAMP BARRIER PAINT - A highly advanced styrene-butadiene rubber (SBR), liquid applied membrane paint. Damp proof membrane (DPM) taped at the edges and anywhere it is joined. 45sqm to supply and fit. RFC Liquid Damp Proof Membrane (DPM) is a professional 2-component applied surface primer. The product is applied in two coats. Floors: a damp proof floor paint that can be applied above and below screeds to provide a damp proof membrane. Should I use a liquid dpm underneath this, or is underlay with a vapour barrier. co. . 40 Kg CO 2. Thread starter rifraf74; Start date 22 Feb 2007; R. Superfl ex Bathroom & Balcony Two Part ARDEX WPM 155 Undertile PU Acrylic Hybrid Membrane ARDEX WPM 157 Polyurethane DPM 157 ARDEX WPM 163 Sheltercoat DPM 163 Penetrative Sealer ARDEX WPM 256 HydrEpoxy 256. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. We've removed them and applied Wickes liquid dpm (bitumen based) to reseal the floor. Walkable in 4 hours. F78 Stopgap 1 Coat Rapid STOPGAP F78 is a solvent free, one component, ready to use system which dries rapidly to provide a waterproof surface membrane. Surface conditioner/ primer: 1 coat, 100-200 g/m 25 to 50 square meters per 5 litre depending on surface. The subfloor is a solid slab that is mostly level (although in parts, just earth). Drybase® Liquid-Applied DPM is a single-pack barrier coating for above ground use. EITHER. Our liquid waterproof membrane is a liquid DPM that makes your floors durable and water-resistant. All you need to do is apply this coating with a brush and. There is no damp proofing at all and the floor was a bit damp. As you say, it needed to be painted up the wall much higher. It's brilliant stuff and the new glueless karndean can literally just sit on top. Once dry apply two coats of Drybase® Liquid DPM as normal. 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. Apply the first coat in one direction, ensuring that the material is worked well into the substrate. It's joining onto the garage I'm converting so the whole floor is getting built up with polythene DPM, insulation, floating chipboard. It is supplied ready to use. . It is suitable for sticking down any species of wooden flooring to almost any subfloor. Thin Micro-ToppingProduces durable surface to color or stain. Can be used over underfloor heating. It can also be used on floors tanked with Sovereign Hey’di K11 when a vapour barrier is. It might seem a bit unusual. I'd like to put a bit of self levelling compound down so the insulation is evenly supported. Withstands 98% RH. The opposite really. The most popular screed types include cement screed, anhydrite screed (also calcium sulphate screed), mastic asphalt screed and dry screed. 1. Ready to use, ultra-quick drying, flexible liquid membrane for internal and external waterproofing applications. 2. This barrier is intended to stop moisture passing from one to the other. Robert Chambers New Member. These black DPM flooring membranes are designed to be unaffected by groundwater as well as interstitial condensation should it occur. 5kg 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. Order online at Screwfix. Visqueen Liquid DPM is emulsion based and free of solvents. substrate by the level / height of liquid. A vapour barrier, on the other hand, is a damp proofing product attached to a wood floor underlay to reduce moisture passage. The products have excellent adhesion to damp concrete and can be installed fast and easily, even at lower temperatures. 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? I bought 16mm deep rubber gym tiles to finish the floor. Drybase Liquid-Applied DPM Drybase Liquid-Applied DPM is a liquid-applied damp-proof membrane providing a barrier to damp and ground gases, such as radon , carbon dioxide, and methane. Two-component, single coat application, damp proof membrane for controlling residual and constructional moisture in cementitious substrates. The tiler can then latex or screed over the DPM. FREE next day delivery available, free collection in. £2,000. 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. Consult technical documents (Link -> Larsen Liquid DPM) Larsen DPM Universal is a superior 2 pack epoxy surface applied liquid damp proof. It is not suitable as a bond. – Adhesive can be applied directly on top. PU280-S. Another option is the PermaSEAL Liquid DPM, a two-coat barrier coating designed to protect both floors and walls from moisture. DIYDave. 0. You are essentially painting a concrete floor, after all! But it is an effective way to do it. 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. Hi all, this weekend I plan on applying a liquid DPM and self levelling compound to my garage floor slab. for Floors 1. coating to create a key for the screed. 2 coats liquid DPM. Solum Treatments The solum of a property is the subfloor base of the property (level under ground floorboards). Liquid Epoxy Damp Proof Membrane 5kg (Metal Tin) Rating: 100%. Liquid dpm’s are used to protect the walls and floors of a building from moisture and rising damp in just a couple of coats. Set a straightedge across the floor. 2- Prime floor with neat p131 on non absorbent floors and water down on absorbent sand cement etc (approx 1-3 mix) 3- Next self level the floor with an acrylic levelling compound. Description. £9. DESCRIPTION Water based rubberised bitumen emulsion for internal and external use. It is also referred to as a moisture suppressant. 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. Allow the first coat to dry before ap-plying the second coat at right angles to the first. Damp proof membrane paint is a liquid DPM that blocks the action of penetrating damp on floors, ceilings, and internal walls. It is not suitable as a bond. 7,856 1,619 113. An ARDEX liquid Damp Proof Membrane will protect the floorcovering installation from residual construction moisture and rising damp, where the highest measurable. - lay a liquid dpm. Both are excellent and have used both on various projects and with excellent results. It will tackle residual moisture in concrete up to 6% C. It should be folded into the. . Well suited for use as a water and water proof barrier, beneath raised access floors, in plant rooms and bunded areas. Suitable for use as an overlay damp roof membrane to cementitious surfaces which were laid without an underlaying damp proof membrane. Drybase Liquid Applied DPM A ready to use liquid-applied damp-proof membrane. Moisture vapor resistant up to 10 lbs. Before starting the installation. Stack Exchange Network. Insulation sheets and steel laid on top of plastic membrane. advise that you apply one coat of DPM. 100% epoxy solids. This enables earlier access onto the floor for the application of screeds, coatings and other floor coverings including tiles, vinyl, wood and carpets. Drybase Liquid-Applied DPM is water-. Facades Tile Fixing Flooring Systems Technical Mortars Check all Uncheck all. Pouring liquid screed over under-floor heating pipes – image courtesy of JCW Floor Screeding. A liquid DPM such as Bostik Cempolatex Moisture Suppressant must be applied in two coats. It also permits early overlaying with vinyl. Suitable for application by roller or squeegee. wet-rooms and concrete floors. Drybase Liquid-Applied DPM is water-based. An ARDEX Damp Proof Membrane will protect the floorcovering installation from residual construction moisture and ground water vapour, where readings of up to 98% RH are measured. The liquid DPM forms a continuous barrier that seals the surface and protects the underfloor heating system from moisture and damp. Key Features. Floors can also be susceptible to moisture ingress, especially concrete floors. Waterproof. 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. If it’s solid wood you need a surface dpm. Drybase Liquid-Applied DPM is a liquid-applied damp-proof membrane providing a barrier to damp and ground gases, such as. liquid damp proof membranes (moisture blocker) 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. 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. Liquid Epoxy Damp Proof Membrane - 5kg. (DPM) above or below a ground floor slab to stop ground moisture reaching the upper surface of the floor. It may have picked up a couple of small holes, particularly at the corners, we were fairly careful but not anally so - there's definitely not one under the garage so putting a continuous one across the full old/new slab (turned up to the DPC) to do the real work. It is available in black or white with a consistency similar to that of thick emulsion paint. Once applied, it cures to form a flexible and elastic membrane that resists. i try to keep up on new products and a company called ardex uk make a latex based levelling compound called (arditex na)that goes straight over bitumen to seal it. CaCl Test. Labour costs. Our Liquid DPM was also developed to protect. Liquid Applied Systems. ECS Epoxy Floor Coating is applied in two coats. Drybase White Liquid Damp Proof Membrane - 1L Drybase® Liquid applied DPM is a single pack barrier coating for above ground use. 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. 12. It is available in black or white with a consistency similar to that of thick emulsion paint. Sovereign DrySure Liquid DPM & Gas Barrier can be used to protect most building surfaces from the effects of liquid and water vapour therefore suitable for providing a DPM on floors and in walls. ARDEX offers a range of liquid or surface DPMs to protect the floorcovering from residual construction moisture and rising damp, when a structural DPM is damaged or missing. weberfloor DPM is a two-component epoxy based chemical damp proof membrane that can be applied in one coat on to concrete or cement based screed surfaces with a moisture. 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. For advice on the correct epoxy floor coating for your requirements or specifics around epoxy DPM application methods please feel free to contact one of our technical advisers on 0117 982. With a consistency similar to that of thick emulsion paint, it's suitable for use on solid floors, embedded timbers and walls. Go to product. BAL DPM is resistant to water, chemicals, grease and pollutants, and can be used internally or externally either as a DPM, primer, waterproofer or. P. Stack Exchange network consists of 183 Q&A communities including Stack Overflow, the largest, most.