Browse our huge range of; kitchens, bathrooms, doors, windows and 1000's more specialist products online, ready to pick up at your local branch today. 15 m2 1. Check your local branch stock. Modern homes tend. £178. A thinner sheet might violate building codes and be a costly repair, so 1200 is always suggested. Order Capital Valley Plastics Ltd Damp-Proof Membrane Black 1000ga 3m x 4m at Screwfix. The sheeting is tear and puncture resistant and contains a pesticide which makes it termite resistant, creating an essential barrier to protect your home from. With a thickness of more than 1200 gauge, DPM sheets are. exterior sealing,. Add to Basket. Coverage. Bituminous membranes are made from a polymeric, tar-like material that is poured into a trench to the side of a foundation. Our range of damp proofing. Tanking A Concrete Garage Floor With Damp Proof Membrane. Damp-proof membrane is used to protect buildings from moisture by creating a damp resistant barrier. Novia 1600G Radon Barrier is an approved blown polythene material suitable for use as a radon barrier damp proof membrane in solid concrete ground floors that are not subject to hydro-static pressure. 75 m2 1. Once applied, it cures to form a flexible and elastic damp-proof membrane. View Product. The damp proof exterior wall coating will stop damp, erosion, efflorescence and deterioration of your home but without changing the appearance of the outside of your house. 88. 3. Wykamol's Dampstop Membrane is a studded polypropylene membrane, designed to act as a damp proof guard for walls suitable for rendering, plastering or dot n dab dry lining The impermeable layer gives additional protection against corrosive chemicals encountered during building and construction. Damp Proofing. DPM Damp Proof Membrane 300MU 4m Wide Polythene Sheet 1200 Gauge (0. Highly durable barrier prevents the ingress of harmful, naturally occurring Radon gas. This is since a garage is not considered a habitable space. Our waterproof duct tape is water resistant and extremely versatile and can be employed for use with both doors and windows. 88 Inc VAT. Damp problems are one of the most common things that go wrong with homes and other kinds of buildings. Get a Selco Trade Card or login now. Permagard – 30 Years of Damp Proofing Experience At Permagard, we sell a range of high-quality basement waterproofing products . Waterproofing and Tanking. Damp Proofing View Category Water-proofing & Gas Control View Category Structural Repairs View Category Timber Treatments. Vespol Alcor Dampcourse Standard 230mmx30M. 5 Items Found. Damp Proof Course 100mm x 30m. Damp Proof Membrane Kit - 10m². It is formulated with select. BBA Damp Proof Membrane Handi-Pak Blue 5m x 4m (300mu) Keep indoor and outdoor surfaces waterproof with this Everbuild Black Jack damp proof membrane. $ 32 80. We also have a range of roof felt adhesives from top brands such as Bond-It to make sure your felt is secured with a long-lasting, strong bond. At Fastbuild Supplies, you can find a comprehensive selection. Choose from a wide selection of breeze blocks, engineering bricks and lintels at affordable prices. Get a Selco Trade Card or login now. In addition to a wideWaterproofing sheet membrane the company sells costs roughly $1 a square foot ($180 for a roll that yields about 175 square feet of usable membrane) while a water-based dampproofing costs $300 for a 55-gallon drum, or about 22 cents a square foot. They both refer to plastic sheets that prevent the ingress of gas into a building. With the right epoxy damp proof membrane, your surface is much more likely to have a great life-span. Some problems involves salt damp, lateral damp, rising damp & mould. An effective barrier against moisture, Damplas DPM is manufactured from 100% recycled polyethene. W. If you do have a specific. It sits between the concrete and the underlay floor covering. The installation of the DPM is extremely important as this acts as a barrier to prevent damp rising up through the substrate, from the ground below. Our Black Breg Polythene DPM is a heavy- duty membrane polythene sheet, that has been designed to prevent moisture from the ground entering a property. They are both. . 65 Ex VAT £1. The best kind of DPM to use in pond lining are those produced to be used as pond liner, especially if your pond will have fish in it. Ask a question. Damp rising through concrete floor slabs is fairly common, causing damp issues on carpets and floor coverings, warping wooden floors and increasing the likelihood of low-level mould growth. Beam and block floors should be level and grouted. while stocks last. - to prevent damp from working its way into the insulation. Kit Includes: 8x 380ml of Ultracure Heavy duty Applicator Gun 1x 12mm x 250mm SDS drill bit 1x 12mm x 160mm SDS drill bit 1x Disposable gloves 1x Extended nozzle User Guide. Easy and fast installation to foundation walls. Polythene Damp Proof Membrane 250MU 10m². Cut the damp proof membrane to size using scissors. Shop online with Click & Collect and next day delivery available. 3. EN 13967. An effective barrier against moisture, Damplas DPM is manufactured from 100% recycled polyethene and is suitable for use as a "Type A" damp proof membrane. Inspiring Confidence. 20 – £ 58. However, while DPMs are instrumental in maintaining a dry, healthy living environment. DAMP PROOF (DPM) MEMBRANES Pg 4 Appraisal No. com. Order Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m at Screwfix. - to prevent damp from working its way into the insulation. Damplas DPM is used as a membrane within a range of building applications, preventing water ingress in vulnerable areas. Preparation is the main thing for the layers, and the substrate should be dry and clean. Made from recycled materials. com. BBA Damp Proof Membrane Handi-Pak Black 3m x 4m (250mu) ★★★★★. It comes in black or white and has a consistency similar to thick emulsion paint. A specially formulated interior waterproofing primer. Select options. Ultracure Damp-proofing Cream 380 ml (comes with extendable plastic nozzle) Ultracure Damp-proofing Cream 600 ml. The damp proofing membrane kit can be installed straight after the insertion of the new damp proof course and can be rendered or dot and dabbed immediately after completion of the membrane installation. SikaBond Rapid DPM 5ltr. Damp Proof Membrane (DPM) is used to create a barrier between a concrete or screed subfloor and a wood floor. Get a Trade Card. By their nature, masonry walls are not waterproof. Delta PT-Lath Plaster Membrane Fixing Plugs (200) inc Drill Bit (with or without seal) £ 37. 42 [2021] Backfilling and Drainage 10. The silane then lines the capillaries in the substrate to create a water repellent barrier. Where insulation is concerned, fitting a damp-proof membrane is important, as it safeguards the insulating properties of the material. Damplas DPM is used as a membrane within a range of building applications, preventing water ingress in. Drybase 2mm Plaster Membrane Mesh (2m x 20m) - Low-Profile Plaster Membrane For Use on Damp Walls. 🎬 Watch this: shows us his favourite method for damp. The recommended plaster for a Mesh Membrane is Tarmac Whitewall One Coat. Homeowners typically spend an average of $4,970, or between $2,316 and $7,624, to fully waterproof a basement, crawl space, or foundation. 2. In the context of below-grade protection, dampproofing refers to treating a surface to resist the passage of moisture in the absence of hydrostatic conditions. Whilst this may stop damp showing through for a limited amount of time, it is not a long-term solution. 804 [2019] External Moisture 13. Visqueen High Performance Damp Proof Membrane. 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. Show: To prevent moisture and rising damp, browse through our range of Damp Proof Membrane (DPM) available at unbeatable trade prices today. Fully isolate the dampness from the floor covering. View Product. Offer the Drybase Flex Membrane up to the adhesive on the wall and use a trowel to apply gentle pressure spreading from the centre outwards. The non-woven geotextile membrane allows for easy drainage, filtration and stabilisation while remaining strong and durable. The mesh provides an excellent key so you can plaster straight onto it. Outperforms competing cream and gel-based rising. The studded side goes against the wall, leaving a small gap behind the. Available in 380ml Cartridges, 1 Litre Cartridges and 3 Litre Buckets. 72 Inc VAT. 10 Inc VAT. Once you have repaired your current damp problems, a foil backed. If you have any queries in the meantime, please do not hesitate to contact our office on 0333 202 6800 A damp proof membrane (DPM) is a type of membrane material is used to prevent dampness from occurring through capillary action. However, rising damp occurs when there are issues with the damp-proof course and membrane. The paint is latex based and will dry to a durable semi-gloss finish. Use it on concrete, wood, plastic, metal and other exterior surfaces you want to protect. Our expert team are ready to offer you the very best solution for waterproofing, gas and damp systems with our extensive product range. SHELTERSEAL DAMP-PROOF MEMBRANES Pg 3 Appraisal No. Product information. Our damp proofing teams are ready to go where you live. The epoxy DPM comes as a two-component system. The use of damp proof membrane in construction is regulated by British Standards, which state that the sheet should be at least 1200 gauge (or 300 micrometres). 3. 99 ex. Damp Proof Membranes. Product Details. It is formulated with select elastomeric resilient acrylic polymers and reinforced with polyester fibers for excellent elongation and tensile properties. Self-Adhesive Bituminous Sheet Membrane. 5mm – 1mm and with varying stud sizes from 1mm – 8mm. Uses Waterproofing and gas proofing membrane for concrete basements, lift pits, carparks and other water excluding structures. Covering Essex County - Ilford to Colchester and up to Stansted. We will make sure you have the right damp proofing product to get the job done. Can be sprayed or trowel. The use of damp-proof membranes in construction is governed by British Standards - they state that the DPM should be at least 1200 gauge (300 micrometres). VCLs prevent excess moisture entering a wall’s cavity, behind the insulation. Coverage: 15sqft/Kg for 2 coats. 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,. The. does anyone know of a primer / sealer that can. 99 Ex VAT £37. 6 m2 1. Our easy to install range is available in various thicknesses up to 0. Designed to prevent moisture intrusion in brick and blockwork, Damp Proof Course (DPC) Polythene roll provides a reliable and effective solution to domestic damp proofing issues. Bond-It Damp Proof Course (DPC) Membrane 100mm X 30 Metre roll - Flexible, Durable, Safe and Clean to Handle Meets BS6515. The easiest solution for damp proofing concrete floors is to install a plastic membrane. 99. Exceptionally waterproof, these peel and stick membrane. Render; Floor Levelling Compounds; Building. Every job is different and has to be assessed by a damp proofing professional, but a rule of thumb is to budget about $300 per metre. Damp Proof Course 100mm x 30m. We’re here to help! You can also benefit from big savings when you buy our PermaSEAL Geodrain Membranes in bulk. Using Liquid Damp-Proof Membranes. Also acts as a damp-proof membrane. Add to Basket. Cover the entire exterior surface area with at least a 6-mil polyethylene sheeting that is attached to the wall. 3. It’s a BBM-certified DPM that’s. Weather and waterproofing tape will protect equipment, fixings, walls and wood from the damage caused by adverse exposure to the elements. Our 3-in-1 Eaves Vent Kits Provide A Simple And Cost-effective Solutions For Underlay Support Trays And Roof Ventilation. 3 review s. 99Inc Vat. Let’s take a look at how these membranes function. BBA Damp Proof Membrane 25m x 4m Clear (250mu) ★★★★★ ★★★★★ £79. Sika Igakol Read more Sika Igasol Read more Sika Topseal protection 107 Read more Sikamur Injectocream-100 Read more Sika Bitumen Read more Aquaseal Waterproof Tanking Membrane Read more 908 Dpm Read more Ultracure Damp Proofing Cream Read more Renderproof Cement Additive Read more No More Damp Ep40 Epoxy Floor. Our BBA Approved 1200 gauge damp-proof sheeting measures 4m wide x 25m long. Damp-proofing is essential for maintaining the structural integrity of your home and preventing health issues caused by mould and mildew. Therefore, damp proofings work best in relatively dry locations. 06 per m² £63. Water-based, liquid applied, waterproof membrane. 5 x 20m. Interior basement waterproofing costs $4,500 to $10,000 on average. Damp proofing, on the other hand, is not an effective barrier for water under pressure. Book a survey today or get in touch on 0208 535 7536 for. DryRod damp proofing rods are the latest technology for the treatment of rising damp. . 5m long x 120mm wide Tile Rite Bath & Shower Seal Membrane for creating a waterproof seal around bath and shower trays prior to installation. This bath and shower seal membrane can be applied by fixing the self-adhesive strip to the outside of the bath or shower tray where it will meet the walls. A damp-proof membrane is a moisture inhibiting foil that is 100% watertight. Monarflex® 2000 Gauge DPM - A loose laid, polyethylene damp proof membrane for horizontal ground supported or suspended slab applications without hydrostatic water pressure. £68. Damp-Proof Membranes (DPM) play a critical role in modern construction by acting as barriers to moisture transmission from the ground into the building fabric. 6 of Volume Two of the NCC. Product code: 153230. There are many factors that can affect this cost, but most quality waterproofing membranes will far outperform all damp-proofing materials, in both performance and long-term durability. The current recommendations for an effective damp proof membrane are that the ground should be constructed using screed with the damp proof membrane laid either on top or below that layer. 25mm) thick perfect for providing damp proofing security throughout the lifetime of a building. When dampness occurs in floors, issues such as insulation impairment, electrical damage and surface damage can occur. This vertical damp proof membrane is commonly installed between foundation brickwork known as tanking where a protective layer of bricks is built to protect the membrane from the backfill process. Damp-Proof Course (DPC): Damp Proof Course is a wall through the structure by stripe action known as rising damp, it is the effect of water rising from the ground to the building. Colour: White cream dries clear. Fully isolate the dampness from the floor covering. Inspiring Confidence. Homeguard Damp & Timber Ltd is a reliable, punctual and professional family run business with over 20 years' experience of working on-site and. Damp-proof membranes are a versatile product and can be used for a wide range of applications, such as creating a protective. The damp proof course is an important layer for all walls of the building that is provided near the ground in the wall to prevent dampness of the walls. Also acts as a damp-proof membrane. The product is a durable, easy to use and puncture resistant barrier designed to stop moisture. MEADOWS offers a complete series of dampproofing products for all your needs. Wickes Blocks are available for next day delivery and are suitable for a wide variety of applications were thermal our sound insualtion are needed. SKU. Complies with BS 8485:2015 + A1:2019 - industry standard for methane and carbon dioxide protection. Some of the best and most common include; Polyurethane, Cementitious Coating, EPDM Rubber, Rubberized Asphalt, Thermoplastic, Bituminous Membrane, and PVC Waterproofing. The shed originally contained an outdoor toilet, and a bin store. Boasting the best. Thank you for contacting Visqueen. Weather and waterproofing tape will protect equipment, fixings, walls and wood from the damage caused by adverse exposure to the elements. Our underlay panels are easy to lift and manoeuvre, and the foam rolls are very quick to cut and install, leaving you with plenty of time to crack on with the rest of the jobs on your list. Delivery Free delivery available (restrictions apply) Log in to buy. Asian Paints SmartCare Damp Proof is a fiber reinforced elastomeric liquid applied waterproofing membrane for waterproofing of flat and sloping roofs. 80 (Ex VAT) SKU: 1760 Category: Waterproofing & Damp Proofing Brand: Visqueen. Ideal for use in areas that are always in contact with water, Technoseal also provides protection against sillage. 4. Or if you need a free bulky delivery, we can arrange that too. My father wants. Fast curing to a durable, flexible consistency. £212. Neatly fold the damp proofing membrane around the corners. CHAS accreditation demonstrates excellent health & safety standards. If you’re looking for cavity drain waterproofing supplies near you, we have a depot just off the M5 where you can click and collect from our trade counter. 100% recycled, 1200 gauge damp proof membrane for use below concrete floors or screeds where no groundwater pressure is expected. EN 13967. £50 to £75. It is designed for use in solid concrete floors to protect buildings from moisture, rising water and damp from the ground. SIKAPROOF® WATERPROOFING MEMBRANE MASTER SPECIFICATION . ) is introduced in between the source of dampness and the part of the building adjacent to it. They are 100% impermeable — they repel water, completely preventing it from penetrating the membrane. 2. While damp proof membranes are used under floors to stop damp rising up into the building, vapour control membranes prevent moisture from inside the building. 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. Here you will find a selection of technical articles, presentations and case studies from which to support your enquiry. When fitting damp proof membranes on walls you should follow these steps as guidance: 1. 5mmx30m. Damp proof membrane Trade Store (1) 635 products Compare Sort Sort Capital Valley Plastics Ltd Green 125 Micron Moisture barrier 2 options (2) £ 14. Thompsons Water Seal penetrates deeply into porous structures to stop. £99. Homeguard Damp & Timber Ltd. Your enquiry has been received and a member of our team will be in touch within 24 hours (Mon-Fri). Damp proof course injection. Damp proofing in construction is a type of moisture control applied to building walls and floors to prevent moisture from passing into the interior spaces. The application of the plaster should be in two coats: a 6mm scratch coat and a 6mm. Customer Reviews. 2 The minimum requirement for backfilling is that a granular, free-draining material is used with theIn this complete Basement waterproofing kit you will get. Our easy to install range is available in various thicknesses up to 0. Screwfix customers rate this product 4. 4 x 380ml Cartridges. Monarflex® Polyethylenes DPM’s are manufactured from blended polyethylenes, which remain flexible at low temperatures. Excellent adhesive and elongation properties. £ 62. A damp-proof membrane safeguards a building's concrete slab against moisture that may permeate from the foundations. Torch On Green Mineral Cap Sheet SBS Felt 1000mm x 8m Roll. Place the damp proofing membrane on the wall. 99. To lay a damp proof membrane on a concrete floor, start by removing the skirting boards and drying out the floor. Water & Damp Proofing; Damp Proof Course; Wickes Green Polythene Vapour Barrier - 2. These are suitable for use on contaminated land sites, offering protection against the ingress of ground gas and vapours ensuring a safe, cost effective and value engineered solution against contamination bespoke to your project requirements. DPM Sheeting is used as a DPC (damp-proof course), which is designed to prevent moisture reaching a concrete slab. BBA Damp Proof Membrane Handi-Pak Black 3m x 4m (250mu) ★★★★★. 2. 2. - Chemical damp-proof course - chemical solution (damp-proof cream) injected into the mortar joint of effected walls through drilled holes to create waterproof barrier and prevent moisture rising above the new damp proof course. Make sure there is a 25 mm gap. Novia 1600G Radon Barrier is an approved blown polythene material suitable for use as a radon barrier damp proof membrane in solid concrete ground floors that are not subject to hydro-static pressure. H001511. View all: Radbar Membranes & Barriers. Up to to 15% increase in top coat coverage. 186. Product Description. Requirements in the UK. Allsheet is a 500-micron multi-layer damp proofing membrane manufactured from virgin resin flexible polyethylene. View. A damp-proof course is not guaranteed in a garage. Our range of waterproofing equipment covers everything from anti-crack tile underlay and joint tape, to waterproof wall matting and and shower seal membrane. It can be used either as an oversite membrane between a blinded hardcore bed and base concrete, or as a sandwich membrane in base. 1. One of the best membranes to effectively protect the underground parts of the building against dampness. Save more with Subscribe & Save. Once the source of the damp problem has been identified, make sound any structural defects and remove any internal finishes so the wall is back to the original substrate. Overlap all sheets by 75mm. 1200g polythene Damp proof Membrane (DPM) is a heavy- duty sheet that is ideal for preventing the access of. If you're working on a tiling project, waterproofing is essential. 10. 99Inc Vat. Inspiring Confidence. IKO Rubershield Eco Extra Breather Membrane 1 x 50m. This makes it ideal for use in a variety of construction applications like trench drains, wrapping of attenuation units, wrapping of perforated drainage pipes. 19 Inc VAT. Add to basket. Polyproof Dampcourse Polythene Black 350mmx30Mx500um. If you are looking for a single product or an entire solution to your construction challenges then please contact us today on + 971 55 2587901 or email. By protecting the roof against the elements and water damage, the roof will have a much longer lifespan and remain strong and sturdy for many years to come. Certified for use even in very damp walls (up to 95% saturation) High strength formulation with enhanced spread characteristics. 45kg 200mm x 10m, wt 8. BBA certified - third party accreditation. The surface of the slab should be smooth, flat and free from projections. Upon curing, it forms a thick, seamless, durable membrane thus offering ultimate waterproofing. Preventing and treating damp can be a nightmare job, but at Selco, we stock a huge selection of damp proofing to help you get the job done. 08 each (Inc. Coverage: 0. It is there so that dampness does not occur when there is capillary action (the action of unwanted fluid passing through a small area that could create dampness). 2. A ready-to-use liquid-applied damp-proof membrane. 1 ADESO® – Adesoguard, REOXTHENE TECHNOLOGY® Easy Lift, REOXTHENE TECHNOLOGY® Bitulight and REOXTHENE TECHNOLOGY® Polyflex Light Damp Proof (DPM) Membranes, when installed in accordance with this Appraisal and the Technical. Excellent Elongation. . Ultracure Damp-proofing Cream 380 ml (comes with extendable plastic nozzle) Ultracure Damp-proofing Cream 600 ml. It needs to be a barrier because you have warm air cooling down, and you have got the vapour, as soon as it hits onto the cool area, it cools. (16 products) Damp-proof membrane is used to protect buildings from moisture by creating a damp resistant barrier. £ 62. Damp proof membranes are usually used in two main areas. Browse our weather and waterproofing range for roofs. Methods of Damp Proofing. Option 1 – Install a Floor Membrane. FREE next day delivery available, free collection in 1 minute. FREE next day delivery available, free collection in 1 minute. Damp is a common problem in the UK in many types of buildings and comes in many forms e. IKO Rubershield is a range of BBA approved (cert No. Double cover all internal and external corners by 300mm. None. ₹ 8,000/ 25 Kg Get Latest Price. Key. Overview. The dimples look rather like the underside of a football boot and some call these membranes ‘egg box’ type. Firstly, it. 99. Highly durable barrier prevents the ingress of harmful, naturally occurring Radon gas. Here you will find a selection of technical articles, presentations and case studies from which to support your enquiry. 5m (L x W) is manufactured using a unique thermal bonding process and has excellent filtration properties. Clean any mildew and mould with bleach or vinegar spray. Damp proofing is defined by the American Society. com. This product is made from a minimum of 90% recycled post-consumer waste plastic. Dryrod Damp Proof Course Rods - 180mm Pack of 10. These Membranes can have a plain surface, for battening, or a Mesh surface for direct plastering or plaster boarding. FREE next day delivery available, free collection in 1 minute. Buy Polythene Damp Proof Membrane 250MU 10m² at trade exclusive prices. P. Vapour Barrier Foam Underlay 15m². 5m rolls and covers an area of 50m2. 30mm. Monarflex® Polyethylenes DPM’s are manufactured from blended polyethylenes, which remain flexible at low temperatures. Item Code: 527780701. If no DPM is present, apply 2 coats of Sika® MiniPack Waterproofing slurry across the solid floor for 50 –100 mm and up the wall to overlap with the DPC. 00 incl VAT. This fix is carried out from external to internal in situations when the joists run parallel to the bowing wall. But to give you a rough idea, the average cost of a damp proof course for a three-bed semi-detached property would be around £800. It’s a water-based rubberised bitumen emulsion that can be used on walls and floors to prevent water ingress and protect against dampness from the ground. Also acts as a damp-proof membrane. Approved by BBA, WTA, OFI and others. Both damp proofing and waterproofing prevent moisture penetration. 5 in) of RESISTO ELASTOMERIC SEALANT at the junction between the footing and the foundation wall to ensure optimal waterproofing after the installation of the membrane on the transition zone. When water rises within the wall it will allow ground salts. They soak up rain to saturate the wall with penetrating damp. The floor of the room then needs to be dried out as much as possible. Speak to an expert. Or, if you need a quick fix that will produce long-lasting results, the SealAcryl Emergency Repair & Waterproofer from Bond It is a multi-purpose roof coating membrane that prevents water. Tyvek ® Supro does not need any soffit, tile or ridge ventilation, which can save time and. However, in many listed properties. £2. Get a Selco Trade Card or login now. Liquid-applied membrane is commonly used for waterproofing and damp-proofing of concrete surfaces, such as floor slabs, retaining walls, balconies, tunnels, bathrooms and carparks. Permagard - Providing Solutions. Solcourse DPM is commonly used as a moisture barrier to prevent moisture rising into a buildings. 98 Inc VAT. If you need help with a specification, our team are here to help. The primary waterproofing layer for a foundation wall is usually a liquid applied membrane. They provide excellent flexibility and ease of installation in New Zealand's varying climates. 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. Open Mon-Thurs till 6pm and Fridays till 5pm. The location and level of the structure’s foundation, drainage, rainfall. Order Cromar Vent 3 Lightweight Breathable Roofing Membrane Dark Grey 50m x 1m at Screwfix. As we’ve mentioned, these damp proofing membranes come with a mesh that allows you to render directly onto them. Choose Denso Petrolatum waterproofing tape to protect ductile iron and steel pipe. PermaSEAL® Damp Proof Membranes.