The nominal characteristics for the product are given in Table 1. Sheetseal GR is typically used where a methane. RIW Double Drain is to be installed with the filter fleece facing outwards, towards the soil / ground. Structureseal GPT is a 1. Excellent elongation at break. £39. RIW Third party certifications: BBA Agrément Certificate . Sheetseal 226 is typically used to provide a water and water vapour barrier in all forms of construction, particularly where large unobstructed areas. RIW Limited 487-488 Ipswich Road, Slough, SL1 4EP Technical enquires tel: 01753 944200 Specification Guide for RIW Waterproofing Systems l 23 Detail 1 - External Tanking Waterstop (Optional) Sheetseal Primer Sheetseal 9000 DPC / Cavity tray Protection Board (Optional) Sheetseal 226 Fillet Cementfill HB Fillet Sub-soil drainage as required Double Drain Sheetseal 226 Reinforcing strip of Sheetseal 226 x 300 wide Reinforcing strip. RIW Structureseal GPT Data Sheet. RIW Sheetseal 226; top edge must be adequately supported 150mm min. Emergency telephone number. • Where these pass through sheeting, make junctions completely impervious using RIW Sheetseal 226 or similar approved in accordance with the data sheet for the product. Sheetseal 9000 DPC; Sheet Applied Systems. From £35. The installed product protects the structure against moisture and radon from the ground. REF. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. Sodium Bentonite Systems [{product_related_downloads:count}] doc. Description. Sealing Compound / Granules; Structureseal; Waterstop;. -- Choose an option -- Waterproofing above ground level Waterproofing at ground level Waterproofing below ground level Gas proofing. Sheet Applied Systems. RIW Sheetseal 226 is a cold applied, high-density polyethylene film (HDPE sheeting), coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Help. Cementfill WP RIW. The product is designed to relieve hydrostatic pressure, by promoting the flow of ground water away from the face of the structure to land drainage. DPM Blue. A bentonite sheet waterproofing composite of high swelling . 05m x 1. Sheetseal 9000 DPC; Sheet Applied Systems. Enquire Now View. RIW Sheetseal 226 . Sheetseal 226 NBS Clause. Integrate the system with a damp proof course/cavity tray, by means of placing a 300mm wide band of Sheetseal 226, over the termination point, a minimum of 150mm. Drains should be subjected to regular inspection. Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. RIW Sheetseal 226 advantages Forms a barrier against water and moisture Easy installation Resistant to sulphates Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Self-adhesive, damp-proofing and waterproofing membrane. The cellar was partially under a public footpath and leaking water. Sheetseal 226; Sodium Bentonite Systems. For vertical surfaces the material should be applied by brush. Easy to use: Cementseal is used to install and joint the tape enabling rapid application. Typical uses. T: +44 (0) 1753 944200 E: technical@riw. Reinforce with RIW Sheetseal 226 - 300mm wide over RIW Heviseal Reinforce with 0. Contact us: 01344 397777 technical@riw. Key factors assessed were resistance to water and water vapour. About Us; Products + Browse by application. Title: RIW-TD-253 Created Date: 9/19/2019 11:45:22 AM. Download data sheets Search products by application Download typical details Find your local stockist Take one of our online CPD’s. Sheetseal 226 NBS Clause. RIW Sheetseal 226 is a cold applied polyethylene film that acts as a barrier against water, vapour and sulphates. RIW 124781 Sheetseal Tanking 226 is a cold-applied, high-density polyethylene film that is coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Sodium Bentonite Systems [{product_related_downloads:count}] doc. uk 1. Sheetseal 226 is typically used to provide a water and. RIW Limited 580-581 Ipswich Road, Slough, SL1 4EQ Technical enquires tel: 01753 944200RIW Sheetseal 226 1050mmx19. Gas Seal Black Data Sheet. The product generally requires a primer for vertical or sloping surfaces ie: Sheetseal Primer. RIW Sheetseal 9000 DPC. Typically HDPE Sheeting is used as an external or internal basement tanking system or ground floor DPM, particularly where large unobstructed areas are to be waterproofed. RIW Cavity Drain R20, RIW Sheetseal 226, RIW Toughseal, RIW. Customer Sales 01753 944210. ESD01-floor to wall toe with self adhesive. 150mm min. Download Product Info (PDF) Sheetseal 226; Sodium Bentonite Systems. Technical number: 01753 944200. uk for data sheets, typical drawings and more. RIW Limited 487-488 Ipswich Road, Slough, SL1 4EP Technical enquires tel: 01753 944200 Commercial enquires tel: 01753 944210 has a broad range of high performance structural waterproofing products. Typically HDPE Sheeting is used as an external or internal basement tanking system or ground floor DPM, particularly where large areas are to be waterproofed . Sheetseal 226 is a cold applied high density polyethylene film coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. From £42. Sheetseal GR provides a water and water vapour barrier. . Find the right product for your specific project requirements in a few simple steps with our easy to use product finder. Both RIW Toughseal and RIW Sheetseal 226 were used to continue the waterproofing to the required level above ground. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. Class 1 Fire rating. DPM Blue is a three-layer, low density polyethylene damp proof membrane with a polypropylene reinforcing grid. Sodium Bentonite Systems [{product_related_downloads:count}] doc. Search. RIW Structureseal is often used to waterproof lift pit; see how straightforward the application can be. Typical uses RIW Sheetseal 226 is typically used to provide a water and water vapour barrier in all forms of construction, particularly where large unobstructed areas are to be treated. POA. Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone. However, following the necessary underpinning specified by the engineer, the RIW Sheetseal 226 “could not possibly be applied in accordance with the manufacturers’ recommendations. It requires Sheetseal 226 Primer for vertical or sloping surfaces. RIW Sheetseal 226. Sodium Bentonite Systems [{product_related_downloads:count}] doc. The membrane should then be protected from backfilling using Double Drain or Protection Board to suit. Two colour membrane for on-site quality control. RIW has a broad range of high performance structural waterproofing products. co. Match case Limit results 1 per page. RIW Structureseal GPT Data Sheet. The product is supplied as a single component system, ready for on-site mixing and use, requiring only the. - Bonding/ Sealing: RIW Sheetseal 226 x 150mm wide. Must be used with Sheetseal Primer Size: 1. T connectors - geo-vent end connector incorporating 25mm slot for geo-vent. RIW Protection Board is used for the protection of waterproof membranes against mechanical damage, pedestrian or. RIW / 02: RIW Sheetseal Primer 2. Contact us: 01344 397777 technical@riw. RIW Download Sponsored RIW Sheetseal GR . RIW FLEXISEAL 500 HG system is poured onto the substrate and spread using a trowel and / or brush. The lap should be enhanced, by the inclusion of a 50 x 5mm bead of Sealing Compound. Sheetseal Primer is a bitumen solution. Pre-applied Tanking System. 4. RIW Sheetseal GR Data Sheet. RIW has a broad range of high performance structural waterproofing products. DPM Blue. Red, DPM Blue, Sheetseal 226, Structureseal, Cavitydrain R20, Cavitydrain R7, Gas Seal Black, Gas Seal HC, Sheetseal GR, Structureseal GPT, Sheetseal 9000, Cementjoint, Cementfill FC,Features & Benefits of Cementjoint. Retaining walls can be external walls forming part of the landscape design, or walls that form part of a property. Joint Sealants & Adhesives. Shop now. Edward Cullinan Architects first consulted RIW in 2010 regarding the waterproofing strategy for this cutting edge film storage facility Technical number: 01753 944200. Sales number: 01753 944210. RIW Sheetseal Primer 5L. The material should be applied in two even coats to give a minimum dry film thickness of 1mm per coat. Double Drain can also be used to provide excellent. £290. Sales number: 01753 944210. The product was loaded with a screed to resist potential hydrostatic pressure due to varying site levels. RIW in the UK has over 90 years experience in structural waterproofing. 7kg/m2 226 1. LAC ® is typically used on structures below ground level, and as a damp proof membrane to ground floors. RIW Jointing Tape: 15m long roll x 100mm wide STORAGE No special conditions for storage or handling. The membrane should then be protected from backfilling using Double Drain or Protection Board to suit. RIW takes care of your waterproofing strategy from start to finish, including technical advice and guidance, preparation of sectional details, approval of drawings, site inspections and ongoing site support. RIW Flexiseal 500 is ideal for application to all podiums, buried roofs, terraces or balconies. Sheetseal Primer is a bitumen solution. RIW SHEETSEAL 226 Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. Link with. POA. button. Cavity Drain; Double Drain; Plaster Drain;RIW DOUBLE DRAIN Double Drain is a cold applied combination of impermeable high density polyethylene sheet and permeable geotextile filter fabric. How to use RIW Sheetseal Primer. co. RIW Third party certifications: BBA Agrément Certificate . Detail 4 - External Continuity detail Cementfill HB Fillet Sheetseal Primer Sheetseal 226 Sheetseal 226 reinforcing strip x 300 wide 40mm mortar fill Masonry Internal supportingWe provide competitive discounts for bulk orders. Excellent tensile adhesion to substrate. View. Sheetseal 226. Double Drain can be used in conjunction with a primary waterproofing system, or on its own, to isolate the structure from the surrounding soil. RIW Download Sponsored RIW DPM Red . RIW FLEXISEAL 500 HG system is poured onto the substrate and spread using a trowel and / or brush. About Us; Products + Browse by application. Sales number: 01753 944210. RIW was part of the process that turned an existing brickwork coal vault into a wine cellar for a client. 7m2 per litre / per coat. Visit us at riw. See Detail 5. RIW Sheetseal 226 19. SECTION RIW Sheetseal 9000 CavityTray RIW Sheetseal 226; see Note 3 RIW Sheetseal 226. RIW Double Drain -a drainage board which protects the membrane during backfilling operations, and also promotes drainage of water away from the structure. Linkedin. POA. Resistant. BENEFITS l Compliant with BS 8485: 2015 l Methane and carbon dioxide barrierSheetseal GR. Proofex LM Mesh 100mm x 50m. 6mm 300mm x 20m 1. 05m Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Gloves or barrier cream should always be used by operatives and hands thoroughly washed at the RIW LAC Floor finish end of each working period. Cavity Drain; Double Drain; Plaster Drain;RIW Sheetseal 226 Floor screed RIW Cavity Drain RIW Wall/Floor junction RIW Aqua Channel RIW Cavity Drain. Sales number: 01753 944210. Sodium Bentonite Systems [{product_related_downloads:count}] pdf. Sheetseal 226; Sodium Bentonite Systems. RIW has a broad range of high performance structural waterproofing products. Add to Basket. BIM object . Liquid membranes may be used for basement tanking and damp proofing, plant rooms, podium decks and radon protection. Gas membranes and coatings may be used for gas protection, above and below ground level and as an effective damp proof system. RIW Cementseal is a waterproof coating that is used for concrete and masonry work. Sheetseal 226 CE Mark DoP. RIW Sheetseal 9000 . View. Sheet. A combination of RIW Cavity Drain solutions were recommended for the walls of the partial basement, along with RIW Sheetseal 226 across the slab. Sheetseal 226. Cavity Drain; Double Drain; Plaster Drain;Sheetseal 226. RIW Sheetseal 226 is a cold applied, high density polyethylene film, coated with bitumen / rubber self adhesive layer with a removable reinforced silicone paper. RIW Sheetseal 226; 300mm reinforcing strip over RIW LACPlease contact us by either email at sale[email protected]. RIW Sheetseal 226 is a cold applied, high density polyethylene film, coated with bitumen / rubber self adhesive layer with a removable reinforced silicone paper. Cavity Drain; Double Drain; Plaster Drain;RIW FLEXISEAL PRO Flexiseal Pro is a two-pack solvent free polymer modified epoxide coating which cures to give a continuous tough but flexible waterproof. Description Sheetseal GR is a cold applied high density polyethylene film bonded to. Sealing Compound / Granules; Structureseal; Waterstop; Structural Drainage Systems. The internal angle at the base of the wall, and other areas subject to movement, must be reinforced with a 300mm strip of Sheetseal 226. Technical number: 01753 944200. It is a cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen/rubber self adhesive layer . Sealing Compound / Granules;conjunction with the latest RIW Product Literature. Certificate type. Sodium bentonite swells when in contact with water, forming an impermeable barrier. Liquid Applied Systems. Complies with latest codes of practice as published by CIRIA and BRE. Sales number: 01753 944210. Compare. The product generally requires a primer for vertical or sloping surfaces ie. Double Drain - a drainage board which protects the. The membrane should then be protected from backfilling using Double Drain or Protection Board to suit. 87 £242. Add to basket. Sealing Compound / Granules;RIW Sheetseal 9000 DPC -a range of high performance polymeric dpc's, and pre-formed cavity trays, compatible for use with all RIW Limited membranes. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. Generally, the loose laid systems are sealed with a range of double sided tapes or seam welded, complying with the latest codes of practice as published by BS 8485: 2015, CIRIA & BRE. Specification Guide: RIW WATERPROOFING SYSTEMS · 2016-06-21 · specification guide section 1 liquid applied systems flexiseal heviseal lac toughseal liquid gm fwm section 2 sheet of 31 /31 Match case Limit results 1 per pageSheetseal 226 RIW Adhesive Tape Sheetseal 226 on cement particle board or similar Steel framing system Toughseal (two coats) Sheetseal 9000 dpc Toughseal (Blinded with course aggregate) Render finish. RIW . Description: Sheetseal Primer is a bitumen solution that is used to prime surfaces before the application of RIW Sheetseal 226. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. Specification Guide: RIW WATERPROOFING SYSTEMS; of 31 /31. pdf. Sheetseal 226 on cement particle board or similar RIW Adhesive Tape Sheetseal 9000 DPC / Cavity tray fixed through Sheetseal 226 Detail 3 - Ground Floor DPM Toughseal stripe coatRIW has a broad range of high performance structural waterproofing products. View. Sales number: 01753 944210. Additionally, it remains unaffected by extreme temperatures, making it suitable for a variety of environments. 00. RIW Sheetseal GR is a radon gas barrier and one of the most effective gas methane barrier systems available. The lap should be enhanced, by the inclusion of a 50 x 5mm bead of RIW Sealing Compound. DescriptionSheetseal 226 is a cold applied high density polyethylene film coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Joint Sealants & Adhesives. Good tensile strength. Double Drain is a cold applied, high density polyethylene profiled sheet, incorporating a permeable geotextile filter fabric, designed to prevent ground water reaching the structure. Sheetseal Primer is a bitumen solution. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. The lap should be enhanced, by the inclusion of a 50 x 5mm bead of Sealing Compound. 39. Technical number: 01753 944200. RIW Structureseal GPT Data Sheet. View. BENEFITS Water and water vapour barrier Factory controlled thickness Elastic and flexible No drying timeDescription. About Us;. Also used in conjunction with Flexiseal, when a slip tape is required at joints. For most situations where internal floor areas are greater than 600mm below external ground level, additional protection may be required. Sheetseal Primer is a bitumen solution. 39 (inc. RIW SHEETSEAL 226 Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. RIW Liquid GM Data Sheet. Sheetseal 226 is typically used as a basement tanking system, or as a ground floor damp proof membrane; particularly where large unobstructed areas are to be waterproofed. The product generally requires a primer for vertical or sloping surfaces ie: Sheetseal Primer. Along with soil types and water table levels, ground contaminates and gases such as Radon & Methane must be considered when deciding upon a waterproofing design. Sheetseal 226 is typically used to provide a water and water vapour barrier in all forms of construction, particularly where large unobstructed areas. Integrate the system with a damp proof course / cavity tray, by means of placing a 300mm wide band of RIW Sheetseal 226, over the termination point, a minimum of 150mm. Structural Waterproofing & Basement Tanking | RIWRIW Sheetseal 226 Primer 5L is a cold-applied, high-density polyethylene film that is coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Description: A reinforced mesh used in conjunction with Proofex LM for areas of extreme loading (covings edges and pipe penetrations). Showing 1-36 of 40. Internal tanking: Should be carried out as illustrated in. Radon is a naturally occurring radioactive gas that is found within certain areas of the country and maps are available in BRE Digest 211 ; RADON. Cavity Drain; Double Drain; Plaster Drain;RIW has over 90 years experience in structural waterproofing within the UK. Sheetseal Primer is a bitumen solution. RIW Sheetseal GR Data Sheet. Read RIW British Museum by Ceren Balkanay on Issuu and browse thousands of other publications on our platform. RIW SHEETSEAL 226 Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. Link with. POA. Proofex Tophat 160mm. Apply remaining RIW Sheetseal 226, as required, in accordance with J40 /190 Visit us at riw. Customer Sales 01753 944210. RIW Sheetseal Primer is a bitumen solution. Sheetseal GR. For more information, please speak to our customer service team who will be happy to help you. About Us;. It will take under 30 minutes, and we'll send you a certificate upon completion. Seamless and fully bonded. Megaseal Liquid Waterproof Membrane x 4kg. RIW Download Sponsored RIW Double Drain . Sealing Compound / Granules; Structureseal; Waterstop; Structural Drainage Systems. 51 (Ex. Two colour coded coats. Post on 02-Oct-2021. Sheetseal 226 x 300mm wide Sheetseal 226 or Flexiseal Pro (one coat) Concrete blinding Waterstop (Optional) Protection Board (Optional) Sheetseal 9000Sheetseal 9000 DPC; Sheet Applied Systems. View. Sheetseal 226 is a cold applied, high density polyethylene film, coated with a. POA. Sheetseal 226 NBS Clause. 361 JUNCTIONS WITH STRUCTURESEAL • RIW Sheetseal 226 to be overlapped by 150mm onto the applied RIW Structureseal. Product name Sheetseal 226 1. 125 mm thick, low density polyethylene backing film with a bitumen/polymer adhesive bottom layer, for use in waterproofing solid floors and in internal and external tanking. Download data sheets Search products by application Download typical details Find your local. RIW provided a waterproofing strategy robust enough for their new build Grade 3 basement project. Sales number: 01753 944210. The. Technical number: 01753 944200. All waterproofing details shown herein must receive approval from the design team or appointed designer. Sheetseal 226 NBS Clause. RIW . Gas Seal GR DPC - gas resistant damp proof course/ cavity tray for building into masonry. The membrane should then be protected from backfilling using Double Drain or Protection Board to suit. The swelling property of the product allows it to form a permanent pressure seal within the concrete joint, thus. RIW. RIW Sheetseal 226 was then used as a waterproof membrane at wall floor junctions, column details and service entries, followed by RIW Toughseal and RIW LAC to damp proof service. It forms a mechanical bond to the external face of the concrete structure and complies with the latest BS8485, BS8102 and CIRIA C748 codes of practice. VAT) Enquire Now. Joint Sealants & Adhesives. Sales number: 01753 944210. Sales number: 01753 944210. Sheetseal 226 NBS Clause. 05m x 19. pdf. The product can be easily cut with a. Water vapour transmission < 0. MultiJoint is designed for use in all types of movement joints and construction gaps, to provide a waterproofing system between structural elements. RIW Sheetseal 226 - a flexible sheet membrane, used over the Liquid Asphaltic Composition, for reinforcing areas subject to movement. Features & Benefits of Toughseal. Sheetseal 226; Sodium Bentonite Systems. Link with. £35. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. RIW Sheetseal 226 is a cold applied, high density polyethylene film (HDPE Sheeting), coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. The installed product protects the structure against moisture and radon from the ground. Simple to detail in critical areas. Sheetseal 226; Sodium Bentonite Systems. button. RIW Sheetseal GR Data Sheet. POA. High & Low Modulus Silicones;. More Info. Drains should be subjected to regular inspections. Sealing Compound / Granules; Structureseal; Waterstop; Structural Drainage Systems. You can easily cut it using a craft knife and it's tough yet flexible. Structureseal CE Mark DoP. Products can also be ordered through other Builders Merchants, such as Travis Perkins, Jewson, Gibbs and Dandy or Keyline. Therefore, these drawings are for general guidance only, and further advice should be sought when necessary from our Technical team. Technical number: 01753 944200. Size: 300mm x 20m Roll. The RIW Sheetseal 9000 DPC 450mm x 20m boasts excellent mortar bond strength, ensuring a secure and reliable seal. Sealing Compound / Granules; Structureseal; Waterstop; Structural Drainage Systems. Sheetseal 226 is a cold applied, high density polyethylene film, coated with a. RIW has a broad range of high performance structural waterproofing products. RIW in the UK has over 90 years experience in structural waterproofing. Excellent low temperature flexibility. pdf; ESD04 floor wall detail bent. RIW Sheetseal 226 CI/SfB Vs1 April 2009 RIW Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. RIW TOUGHSEAL Toughseal is a solvent free polymer modified epoxide coating, supplied as a two part pack of base and hardener in pre-measured proportions. RIW Sheetseal 226 Data Sheet. VAT) £29. Sodium Bentonite Systems [{product_related_downloads:count}] pdf. POA. 05m x 19. Structural Waterproofing > RIW Waterproofing > RIW Sheetseal 226 . POA. About Us;. VAT) £1163. 6mm 1050mm x 19. SHEETSEAL 226 SHEETSEAL GR SHEETSEAL 9000 DPC HEVISEAL TOUGHSEAL CEMENTSEAL CEMENTFLEX EXTERNAL TANKING External tanking is the application of a waterproof membrane to the outside of a basement or sub-structure. RIW Structureseal. Sheetseal 226; Sodium Bentonite Systems. RIW Sheetseal Primer is a bitumen solution. BENEFITS Water and water vapour barrier Factory controlled thickness Elastic and flexible Damage easily repaired No drying time Sulphate resistant RIW Sheetseal 226 is a cold applied polyethylene film that acts as a barrier against water, vapour and sulphates. RIW SHEETSEAL GR Sheetseal GR is a cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone release paper. The product generally requires a primer for vertical or sloping surfaces ie: Sheetseal Primer. Factory control thickness. The 3mm thick bitumen board helps to protect the membrane from. POA. Head Office. This combination of products resulted in an. Sheetseal 226; Sodium Bentonite Systems. co. Sales number: 01753 944210. Sheetseal 9000 DPC. Edward Cullinan Architects first consulted RIW in 2010 regarding the waterproofing strategy for this cutting edge film storage facility Technical number: 01753 944200. Roofing System -Liquid Plastic - Free download as PDF File (. RIW Sheetseal 9000 DPC -a range of high performance polymeric dpc's, and pre-formed cavity trays, compatible for use with all RIW Limited membranes. Web Telephone +44 (0)1344 397788 Email enquiries@riw. 00. Sheetseal Primer is a bitumen solution. DPM Blue is a three-layer loose laid, low-density polyethylene gas barrier. RIW Sheetseal 226 is a cold applied, high-density polyethylene film (HDPE sheeting), coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. BS8102:2009, Item 6.