Rising Damp. A damp proof membrane (DPM) is a water-tight material that inhibits moisture. Product Description. 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. Get a Selco Trade Card or login now. 90 Ex VAT. Easily apply it to prevent water penetration, rot or mold. If your property is already suffering with damp, you will need to resolve the underlying issues first. Our emulsion-type dampproofing coatings are ideal for reducing dampness and moisture infiltration through foundation walls, tanks, culverts, cisterns, and bridge abutments. Visqueen are the market leaders in the manufacture, design and supply of structural waterproofing and gas protection systems. Damp proofing is an essential part of building which greatly reduces the risk of water damage to properties. A DPC (Damp PC) is intended to. A foil backed board should not be used to cover up existing cases of damp. 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. mortar droppings and brickbats. - to prevent damp from working its way into the insulation. However challenging your project, Think Visqueen. If you need advice about installing type C cavity waterproofing systems, our technical advisers are here to help. Our 2000 Gauge damp-proof membrane, which is also BBA Approved, is supplied in 4m x 12. A Vapour Control Layer, or VCL for short, is a plastic layer that restricts the movement of warm, moist air from inside a property into the fabric of the building. A damp-proof membrane is a moisture inhibiting foil that is 100% watertight. In contrast, a vapour barrier (VB) is fitted on the warm side of walls or roofs to stop interstitial condensation. £50 to £75. View Product. Whether you need a vapour barrier, thermal. The non-woven geotextile membrane allows for easy drainage, filtration and stabilisation while remaining strong and durable. Waterproof Paint speedily without the hassle of shipping, customs or duties. Generally, you can expect to pay between R200 and R500 per linear meter for damp-proofing. Item Code: 405680952. Speak to an expert. Up to 10 years warranty on selected items. These pipes are fitted with one-way valves to stop water. There is some damp proof course that makes damp proofing problems could not occur again. 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. Protect your home from damp with Funcosil Facade Cream. Damp proof membrane Trade Store (1) 635 products Compare Sort Sort Capital Valley Plastics Ltd Green 125 Micron Moisture barrier 2 options (2) £ 14. It is ideal for use on damp floors and floor-wall junctions, before the application of floor and wall coverings. A damp proof membrane can be used to resolve issues such as damp walls and slabs, salt affected walls and to provide. 05/m²) Ultracure Damp Proof DPC Cream is a BBA Approved silane based DPC Cream used for injection into brickwork for the control of Rising Damp. Highly durable sheets or rolls to comply with current building. Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m (47163) (55) compare. 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. Easy to Use. Modern homes tend. Our technology is available in two different formulations – emulsion and solvent. Made from recycled materials. 3. Option 1 – Install a Floor Membrane. High performance Masonry Water Repellent Cream for use on brick, stone & render. View all: Radbar Membranes & Barriers. Ultracure Damp Proof DPC Cream is a BBA Approved silane based DPC Cream used for injection into brickwork for the control of Rising Damp. Our BBA Approved 1200 gauge damp-proof sheeting measures 4m wide x 25m long. Easily applied by roller or brush. BBA Damp Proof Membrane Handi-Pak Black 3m x 4m (300mu) ★★★★★ ★★★★★ £13. 1. Returns & Refunds. They are often single skin construction and offer very little in the way of damp proofing and insulation. Our team of experts will gladly visit you and provide a survey of your damp concerns, recommending the most efficient solution for your personal needs or requirements. Using Liquid Damp-Proof Membranes. Damp-proof membrane is used to protect buildings from moisture by creating a damp resistant barrier. Geotextile membrane are large sheets of fabric that are used in many outdoor landscaping drainage applications, such as soil separation, ground reinforcement, soakaways, and land drains. Browse our downloads section below to find the latest support documents and services made available to you. 18 reviews / 4. An easy to apply damp proofing seal paint, Wykamol's No More Damp Technoseal DPM 5ltr Black provides an effective waterproofing barrier. If you need help with a specification, our team are here to help. Damplas DPM is used as a membrane within a range of building applications, preventing water ingress in. As they can compensate for any structural movement over time, they provide longevity and peace of mind. This product is made from a minimum of 90% recycled post-consumer waste plastic. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. Beam and block floors should be level and grouted. Add to Basket. Solution: insert a damp proof course in the walls at different levels to create a barrier to damp. Request a Survey. Upon curing, it forms a thick, seamless, durable membrane thus offering ultimate waterproofing. The type of coating is chosen, depending on the usage of the floor. Geotextile Non-Woven Membrane White 4. This reduces the risk of harmful interstitial condensation by ensuring that any moisture within the. £0. Order Capital Valley Plastics Ltd Damp-Proof Membrane Black 1200ga 25m x 4m at Screwfix. Our waterproofing sealants section consists of roof primer, black waterproof roof paint and roof sealer from brands like Bitumen and Seal It. Our waterproof duct tape is water resistant and extremely versatile and can be employed for use with both doors and windows. This waterproof layer for floors also. The location and level of the structure’s foundation, drainage, rainfall. Newton Waterproofing offers two types of DPM: the physical Dampsafe 802-DPM sheet membrane, and the liquid-applied Epoxy DPM. An insulation foam board needs to be laid directly. Use it on concrete, wood, plastic, metal and other exterior surfaces you want to protect. The ARDEX Shelterseal range is one of the most specified and widely used damp-proofing membranes in the New Zealand market. 100% solids, high build coating. Step 4. Aluma Flash Plus is a self. Damp proofing should only cost between $2K to $8K*. all your floor underlay needs are taken care of at Selco. Whether it be in Brisbane, Sydney, Canberra, Melbourne or anywhere else between, we can come out and do the job for you**. Unfortunately, quite a few of the contractors recommending the inclusion of a membrane seem to be unsure as to the benefit it brings to the finished pavement. The membrane has highly flexible properties, allowing it to easily adapt to irregular shapes without cracking or breaking. 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. The UK's Only Cavity Drain Membrane Extrusion Plant. IKO also offer a number of on-line webinars which can be organised at your convenience. They are 100% impermeable — they repel water, completely preventing it from penetrating the membrane. They are widely used in floor constructions and can also be utilized in walls to combat rising damp. Book a survey today or get in touch on 0208 535 7536 for. 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. In New South Wales, Clause 3. Asian Paints SmartCare Damp Proof Ultra and Damp Proof are the ultimate solutions for roof waterproofing. Choose Denso Petrolatum waterproofing tape to protect ductile iron and steel pipe. Allsheet 500 has excellent tear resistance and puncture resistance and is highly resistant to acid and base chemicals. The purpose of damp proof membranes. There may not be a course or membrane, gaps in the course or membrane, or the ground may be higher. In fact, those multi-functional membranes protect people from gas. Length (m) Checking availability. 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. Get a Selco Trade Card or login now. g. Economy Skeleton Gun, 9" Extension Nozzle, 1 x Pair of Green Nitrile Gloves. Dryzone DPC Cream Foil Applicator Gun. £23. Monarflex® Polyethylenes DPM’s are manufactured from blended polyethylenes, which remain flexible at low temperatures. Click & Collect Available for collection. Damp proofing membranes can also be made from polyethylene foil. 1 The membranes must be protected against damage by the placement of a protection material between the membranes and the granular fill. They are inserted into 12mm holes drilled along the mortar course. Therefore, damp proofings work best in relatively dry locations. £99. Delivery & Returns. Roof & Balcony Liquid PU Waterproofing Membrane System View Category Contact +44 (0) 1282 473 100 +44 (0) 845 400 3333 info@wykamol. The damp-proof membranes used during construction of concrete floors are often thin, and can easily become torn before they are laid. FREE Click & Collect within 30 minutes. 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. Wickes Blocks are available for next day delivery and are suitable for a wide variety of applications were thermal our sound insualtion are needed. Ensure that the ground behind steps in slabs is properly drained and a damp-proof membrane is provided. SECTION 07 13 00 PRE-APPLIED SHEET MEMBRANE WATERPROOFING . And the average damp proofing price per metre is £60. The high vapour permeability and weather-resistant nature of this triple-layer engineered fabric provide a permanent quality underlay. Add to basket. 99. Overlap all sheets by 75mm. Exterior waterproofing a basement costs $10,000 to $15,000. One of the best membranes to effectively protect the underground parts of the building against dampness. Choose from a wide selection of breeze blocks, engineering bricks and lintels at affordable prices. Dryzone Damp-Proofing Cream. It’s a BBM-certified DPM that’s. £68. 3. A damp proofing membrane has several advantages. A damp proof membrane, also known as a DPM, is a barrier that prevents moisture from passing through walls, floors, or foundations. Excellent Elongation. Problem: damp is penetrating walls at different heights, around windows and doors, and at ceiling height. The membrane is also used to. My father wants. The purpose of DPM. 6 x 380ml Cartridges. 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. The floor of the room then needs to be dried out as much as possible. One of the best membranes to effectively protect the underground parts of the building against dampness. £52. Anti-Termite Brikgrip® DPC 3-layer 250 micrometer is an SABS approved damp proof course that is utilised in preventing rising damp in walls, as well as efflorescence and flaking of the wall covering. Homeguard Damp & Timber Ltd is a reliable, punctual and professional family run business with over 20 years' experience of working on-site and. A waterproofing membrane is a flexible, monolithic, and liquid-based coating that is widely used in a range of applications – from bathrooms, roofs, and ceilings to pavements – to waterproof and protect from long-term damage caused by moisture. Visqueen EcoMembrane DPM. 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. 19. There are a wide range of damp proof membranes available for damp-proofing, but generically they are usually a dimpled plastic sheet which comes in a roll. Both of these membranes act as a. Our range of damp proofing products includes everything from damp proofing paint and damp seal, to tanking slurry and damp proof membrane. Damp proofing membranes protect different parts of a structure from damage arising from damp, including mould and mildew, and the risk of rotten timber. Products in Damp-Proof Membranes. Weight: 25000g. - Visqueen's low cost entry level brand. 4 x Aqua Channel 90′ Corners. The isolation of. 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. 2. Damp proofing only stops soil moisture from coming through the wall. BBA Damp Proof Membrane 25m x 4m Clear (250mu) ★★★★★ ★★★★★ £79. Easy and fast installation to foundation walls. 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. Extensive field experience with this technology demonstrates that Ultracure will perform as well as any conventional liquid injection system against rising damp. 99. One is an SBR latex-based formula,. Dryzone Damp Proof Course Cream Foil Cartridge - 600ml. Blue 1. Clear TPS Roll 4m x 25m - 60mu. The damp proofing membrane shall not be allowed to freeze before it has dried as specified by the Manufacturer. With the right epoxy damp proof membrane, your surface is much more likely to have a great life-span. 4. Buy Damplas Damp Proof Membrane 250MU 4 x 25m Blue at trade exclusive prices. This plastic sheeting is commonly used to protect a building's concrete slab from moisture rising from the foundations. Check your local branch stock. Sold & shipped by B&Q (6) Write a review £ 21. The Brain Tumour Charity. Before starting the installation. VAT) Easy Trim 3 In 1 Ventilation Accessory Pack. £73. Buy Polythene Damp Proof Membrane 250MU 10m² at trade exclusive prices. It is recommended that the sheet should be at least 0. Double cover all internal and external corners by 300mm. Sign in for trade prices. Ground bearing concrete floors - 1960s to 1990s. It’s peace of mind solution for builders & home builders. Click & Collect Available for collection. The easy application is carried out in two coats, with a brush or roller. Add to trolley. Product code: 153230. Objective: The objective of this Method statement is to describe about materials, surface preparation, application procedure, safety measures and tools & equipment etc. Call us on 03331 886388 and place your order over the phone. To lay a damp-proof membrane (DPM) you will firstly need to remove the skirting boards from around the room. 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. Permagard – 30 Years of Damp Proofing Experience At Permagard, we sell a range of high-quality basement waterproofing products . Check your local branch stock. A vapour barrier, on the other hand, is a damp proofing product attached to a wood floor underlay to reduce moisture passage. The Work of. 01 SECTION INCLUDES: A. 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). 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. 4M X 20M 1000G Clear Heavy Duty Polythene Plastic Building Dust Rubble Sheet DIY. £30. £212. Wednesday, December 15, 2010. Coverage. Roller applied, Hydraguard is a Liquid Damp Proof Membrane used to limit moisture release; improve the strength of substrates; seal pin holes and air pockets and provide an enhanced surface for bonding for subsequent coatings. Jabfloor 70 Floor Insulation 2400 x 1200 x 125mm. 19. Damp proof course cost. We will make sure you have the right damp proofing product to get the job done. The best way to solve the problem is to dig and waterproof on the outside. Gas protection, damp proof membranes, damp proof course, stormwater, vapour control, temporary protection. Save time and use our Click & Collect service and we’ll have your order ready in just 30 minutes. Delivery Free delivery available (restrictions apply) Log in to buy. Order Capital Valley Plastics Ltd Damp-Proof Membrane Black 1000ga 3m x 4m at Screwfix. 5 x 20m; Wickes Green Polythene Vapour Barrier - 2. Excellent Elongation. Terram product range includes: Cable & Pipeline Protection, Geocells, Geocomposites, Geotextiles, Grass Protection and Porous Paving Grids. 1200g polythene Damp proof Membrane (DPM) is a heavy- duty sheet that is ideal for preventing the access of. Item Code: 334531009. Cost + VAT (low to high) Average cost. Yes, it’s really not pretty, but we want to sort the damp issue properly and not just patch it up for a few month or years. 18+, T&C apply, Credit subject to status. 5kg kit covers approx. If the builder is treating 1,000 square feet of foundation wall, the cost would be $1,000 vs. – to prevent damp from working its way into the insulation. All membranous pond liner (Polyetheline, tarp, etc. 100% recycled, 1200 gauge damp proof membrane for use below concrete floors or screeds where no groundwater pressure is expected. waterproof protection for foundation walls ; Liquid applied membrane ; Water-based - no fumes See full list on ecotileflooring. Flexible - easy to detail and install on site. Call us on 302 244 0179 or submit an enquiry for contact information of contractors in your area. The preferred adhesive thickness is 1 – 2 mm. 99. Bituminous membranes are made from a polymeric, tar-like material that is poured into a trench to the side of a foundation. If you're working on a tiling project, waterproofing is essential. Add to basket. Geotextile Woven Membrane Black 4. Water-based, liquid applied, waterproof membrane. $220. Shopping online is like a walk in the park. Delta PT-Lath Plaster Membrane Fixing Plugs (200) inc Drill Bit (with or without seal) £ 37. Check your local branch stock. 515. Hardcores varied in quality - many have since proved to be totally unsuitable. 86 Inc VAT. BBA Damp Proof Membrane Handi-Pak Black 3m x 4m (250mu) ★★★★★ ★★★★★ £9. Depending on the sheet’s properties, it can also meet many key building regulations for both commercial and residential spaces, offering fire, acoustic, damp, and thermal. SKU: BCH06150. Our technical staff are able to advise you on all aspects of damp proofing and structural waterproofing, for any job large or small. Render; Floor Levelling Compounds; Building. A damp proof course 150mm above ground level can keep out rising damp that. 487310211. 99 ex. Dampproofing is intended to keep out soil moisture while waterproofing keeps out both moisture and liquid water. They will provide a better fixing for plasterboards, where each edge is hitting a timber. If you need help with a specification, our team are here to help. Weather and waterproofing tape will protect equipment, fixings, walls and wood from the damage caused by adverse exposure to the elements. Overlap all sheets by 75mm. 85 Ex VAT £1. Remove damp items and spills and lock up tools. 75 m2 1. Brand: Parex Davco. MEADOWS offers a complete series of dampproofing products for all your needs. £3. Damplas DPM is used as a membrane within a range of building applications, preventing water ingress in vulnerable areas. When fitting damp proof membranes on walls you should follow these steps as guidance: 1. FREE next day delivery available, free collection in 1 minute. Builder's Roll/ Damp Proof Membrane. A successful floor installation starts with a good roll of underlay that will help protect against temperature shifts and moisture. 45kg 200mm x 10m, wt 8. At Selco, we stock a wide selection of waterproofing equipment to ensure your tiling installations are fully protected. Shop online with Click & Collect and next day delivery available. Description. Ultracure is supported by BBA Certification Certificate No: 02/3961. There are many advantages to flat roofs; they can offer extra usable space on the top of a building or additional areas for installation of HVAC and various plant and solar panels. Brand: Ascolite. Applying a damp proof membrane to an internal wall is an excellent solution for damp issues in many situations. It is important to ensure that installation is carried out in accordance with Clause 11 of CP 102: 1973 and the relevant clauses of BS 8000-4:. Quick and easy to use. Installation is easy with minimal preparation required. Visqueen High Performance Damp Proof Membrane. 65 Ex VAT £1. A damp proof membrane is primarily used on solid material floor constructions and it is designed to act as a waterproof barrier, preventing moisture from travelling into other layers of flooring. DPCs prevents the movement of moisture or water from one part of the construction to another. A damp proof membrane commonly consists of a durable sheet of plastic material produced to a government-regulated thickness that’s a minimum of 1200 gauge. Glm / 24hr. 59 Ex VAT £255. For example, a popular use for DMP is beneath concrete floors. This black polythene DPC roll is embossed for additional adhesion to mortar and is made from fully recycled polythene. Dryzone DPC Cream 310ml Clear ★★★★★ ★★★★★ £19. FREE next day delivery available, free collection in 1 minute. Exceptionally waterproof, these peel and stick membrane. Epoxy Damp Proof Membrane. DPM is short for damp-proof membrane, a class of waterproofing often used in construction to prevent water damage. Product information. 41. Permagard - Providing Solutions. Vapour Barrier Foam Underlay 15m². A second-generation breather membrane, which conforms to BS 5534: 2014 and has BBA certification** to support its use within fully supported or unsupported tiled or slated roofing systems. A vapour barrier or damp proof membrane [DPM] is a very important item to use in association with engineered wood flooring and with solid wood floorboards; particularly when flooring is being laid over concrete. Damp problems are one of the most common things that go wrong with homes and other kinds of buildings. The easiest solution for damp proofing concrete floors is to install a plastic membrane. BBA Damp Proof Membrane Handi-Pak Black 3m x 4m (250mu) ★★★★★. 31 inc VAT Each. Apply a second coat of Cemflex® slurry that will act as a bonding agent and while the second coat is still wet and tacky, apply the plaster where Sikalite® has been added into the mixture. £63. Speak to us today on 0117 982 3282. View Product. 6 m2 1. 5 Kg Ascoflex Super Elastomeric Liquid Applied Damp Proofing Membrane. It conforms to BS6515:1984. 99Inc Vat. 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. A Liquid Epoxy Damp Proof Membrane (DPM) is often used as a remedial solution where an existing DPM has failed or was never installed. 98 Inc VAT. hi, we are tiling our bathroom and have applied two coats of 'sika prufe' liquid damp proof membrane on to ply. The damp-proof membrane is a waterproof sheet laid underneath the concrete floor to protect the house from groundwater rising. It was also suffering from a small amount of penetrating damp. 3mm. ) are types of DPM. Water & Damp Proofing; Damp Proof Course; Wickes Green Polythene Vapour Barrier - 2. £26. Damp Proof Courses. Can be sprayed or trowel applied. Our 3-in-1 Eaves Vent Kits Provide A Simple And Cost-effective Solutions For Underlay Support Trays And Roof Ventilation. Drybase 2mm Plaster Membrane Mesh (2m x 20m) - Low-Profile Plaster Membrane For Use on Damp Walls. com. If a DPM has failed or perhaps was never installed in the first place, the features. Get a Trade Card. BBA Damp Proof Membrane 25m x 4m Clear (250mu) ★★★★★ ★★★★★ £79. Show: To prevent moisture and rising damp, browse through our range of Damp Proof Membrane (DPM) available at unbeatable trade prices today. Rising damp is a form of dampness that occurs when ground water rises-up through walls, floors and masonry via a capillary action (sometimes capillarity, capillary motion, capillary effect, or wicking) drawing moisture up though porous elements of a building’s fabric. 5x100M (450m2 Roll) €375. Damp Proof Membrane is intended for use within solid concrete floors to prevent the rise of moisture or damp through structure flooring. Damp Proof Polyethylene Builders Film creates an effective and reliable moisture barrier for a number of building and construction applications. Sikaproof membrane is a 1- component,water based, bitumen polymer modified waterproofing,cold applied liquid membrane. Damp Proofing View Category Water-proofing & Gas Control View Category Structural Repairs View Category Timber Treatments. This product is powerful and helps to hold back damp and excess moisture from ruining your floors. Once you have rectified the original source of the damp, start by removing the old plaster work and render back to the original masonry. Embossed to Assist Mortar Adhesion - Cost Effective dpc, Black, DPC100 4. A damp-proof membrane is required when using certain insulation materials – such as mineral wool, cellulose, etc. Some claim it is a weed-proofing measure, while others claim it helps reduce the amount of sub-base required, and yet others claim it can eliminate the need for a sub-base completely. *Pricing is based on averages and subject to site assessment. 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. £54. 88. Use a hand held roller to ensure a firm bond with the primer. Use a hand held roller to ensure a firm bond with the primer. 15/5190)* breathable membranes for pitched roofs (IKO Rubershield ECO, PRO and PRO Extra). It is often used underneath a concrete. Our range of waterproofing equipment covers everything from anti-crack tile underlay and joint tape, to waterproof wall matting and and shower seal membrane. 44 per m² £25. The mesh takes good quality tiling grout. Vapour Barrier vs Damp Proof Membrane. Damp proofing involves moisture control on floors and building walls. Length: 25000mm. 99. JumboSeal 6000® Damp-proof Membrane comprises of 100 % closed cell low density polyethylene foam laminated with high-density polyethylene film. 99 Inc Vat. Call Peter Cox on 0800 633 5712 * or Contact Us. Also acts as a damp-proof membrane. However, as there are always a number of variables involved, basement waterproofing cost can range anywhere from £1,700 to £5,200. Click & Collect Available for collection. 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. Technical Downloads. BBA Damp Proof Membrane 25m x 4m Clear (250mu) ★★★★★ ★★★★★ £79. Can be sprayed or trowel. From standard flooring underlay and underfloor heating underlay to polystyrene insulating panels designed to eliminate considerable unevenness in the subfloor, all your floor underlay needs are taken care of at Selco. Coverage. 1000mm x 10m IKO Shed Felt Green Mineral. Parex Davco Liquid Waterproofing Membrane Damp Flex, Packaging Size: 5kg 25kg, Gray. 2. Damp-proof membrane types. 88 Inc VAT. 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. Want to place an order over the phone? Call our Dial & Deliver team on 03331 886388. Highly Durable. If using as a damp proofing membrane dress the Bitubond self adhesive membrane to the damp proof course level. Cover the Bitubond membrane within 2 – 3 days of application. 42 Inc VAT.