Riw sheet seal. A cold applied, high density polyethylene film coated with a bitumen/ rubber self-adhesive layer with a removable reinforced silicone release paper. Riw sheet seal

 
 A cold applied, high density polyethylene film coated with a bitumen/ rubber self-adhesive layer with a removable reinforced silicone release paperRiw sheet seal  RIW Jointing Tape Used with RIW Sheetseal 9000 DPC, to join rolls together, and/or to lap the product onto other items

uk Email address of the competent person enquiries@riw. The product is typically used for waterproofing retaining walls, floors, reservoir roofs, etc. RIW Sheetseal GR. RIW Sheetseal Adhesive Membrane Data Sheet 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. The store is highly insulated (0. RIW was part of the process that turned an existing brickwork coal vault into a wine cellar for a client. LAC ® can also be used on the superstructure, as a vapour barrier behind cladding systems / plaster finishes. Showing 1-36 of 40. Ruberoid Hyload Original DPC quantity. 1 RIW Sheetseal 9000 DPC is a flexible sheet comprising a mixture of thermoplastic polymers and other additives, extruded into sheet form, reeled into rolls and cut to width. Product. co. 05m. Home Shop Ground Stabilisation - Stormwater Systems Geotex 300PP. Form: Loose laid composite sheet: Colour: Red / Black: Overall thickness: 2000g / 0. Request Callback; 01753 944200. 5 width (m) 1. Used to prime RIW Sheetseal 226. 🔍. A single-component, polymer-modified, cement-based waterproofing slurry that incorporates advanced micro silica polymer and fibre technology. RIW Gas Seal GR DPC: Gas resistant damp proof course/ cavity tray, 450, 600 or 900 mm wide. Solvent Free. A list of experienced applicators of RIW materials is available from RIW Ltd’s offices. We have small amounts of water appearing at the corners of the slab. Provides hydrocarbon, water, VOC, methane, radon, carbon dioxide protection. 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. 40mm Bottom Y Crack Inducr. Technical. 3. You can easily cut it using a craft knife and it's tough yet flexible. Compare Bookmark. Does the RIW. Double-sided, self-adhesive butyl tape. RIW Sheetseal 220, RIW Sheetseal 223 and RIW Sheetseal 226 thickness(1) (mm) 1. Sheetseal 9000 DPC is a flexible polymeric damp proof course sheet material manufactured from a mixture of thermoplastic polymers and additives. uk;RIW SHEETSEAL 226. Featured Products RIW Structureseal A bentonite sheet waterproofing composite of high swelling Sodium Bentonite, encapsulated between a non-woven and woven geotextile. The board is resistant to water, ground salts and most corrosive chemicals. Home Shop Waterproofing Membranes & Waterstops Bentonite Sheet Membranes RIW Sealing Compound. Sheetseal 9000 DPC flexibility and workability provides an. Details of the supplier of the safety data sheet Company RIW Limited Address Arc House Terrace Road South Binfield, Bracknell Berkshire RG42 4PZ Web Telephone +44 (0)1344 397788 Email enquiries@riw. Download +44 (0)1753 944200 Website Contact manufacturer Products related to this literature View all products (40) RIW Sheetseal GR - Gas Retardant Membrane More literature from RIW View all literature (30) RIW Flexiseal 500 HG . Complies with DOT Road and Bridges specification of Highway Works 1991 Part 3 clause 1015. 05/4213. Damp Proof Course (DPC) material is suitable for use within masonry walls to prevent the passage of moisture from the ground. Gas Seal Ancillaries Data Sheet. Miothene Joint Filler quantity. Geotex 300PP – Specialist Construction Supplies. 56. HelpRIW Sheetseal 226- a flexible sheet membrane, used over the Liquid Asphaltic Composition, for reinforcing areas subject to movement. Price: £ 696. POA . pdf; ESD02-against existing structure. Additionally, it remains unaffected by extreme temperatures, making it suitable for a variety of environments. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. STOT RE 1: H372 - Causes damage to organs through prolonged or repeated exposure . It can be used in solid or cavity walls to control water penetration. Does the RIW. Fibreboard / Flexcell quantity. Enquire Now View. Price: £ 29. RIW Third party certifications: BBA Agrément Certificate . Terminate RIW Structureseal, on the concrete structure, below ground level. RIW Sheetseal primer is a bitumen solution. When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the levels of protection. RIW Protection Board is a flat sheet, made of organic fibres saturated with bitumen. POA. Resistant. Double-sided, self-adhesive butyl tape. High performance Polymeric Technology. 05M & 300mm x 20M Download the RIW Sheetseal 226 technical data sheet(PDF) For most situations where internal floor areas are greater than 600mm below external ground level, additional protection may be required. Telephone. Settpoint can be used for joints between 10mm and 50mm and will penetrate to a depth in excess of 150mm. The product is suitable for use above or below ground bearing reinforced concrete slabs, and above suspended beam and block floors or precast concrete slabs. 3: H226 - Flammable liquid and vapour. Ardex DPM 1 C Rapid 10kg. Product code : 82CGSD. Seamless and fully bonded. RIW 23: RIW Structureseal 3. RIW Structureseal is a bentonite sheet waterproofing composite of high swelling Sodium Bentonite encapsulated between a non-woven and woven geotextile. Download data sheets Search products by application Download typical details Find your local stockist Take one of our online CPD’s. Good ventilation is necessary to obtain a proper cure. A cold applied, high density polyethylene film coated with a bitumen/ rubber self-adhesive layer with a removable reinforced silicone release paper. The RIW Technical Department is available to advise on individual projects and to prepare and assist in the preparation and specifications and drawings. Flexiseal Pro RIW. RIW LAC is a two coat, cold applied bitumen damp proofing membrane, which dries to a uniform gloss black finish. Head Office. Sheetseal 9000 DPC is a flexible polymeric damp proof course sheet material, manufactured from a mixture of thermoplastic polymers and additives. 100mm x 10mt. Applying Damp Proof Membranes. 8 Mass (g·m-2) Features & Benefits of Toughseal. Ardex DPM 1 C 10kg. Enquire Now. This product is suitable for use on ground bearing reinforced concrete slabs, suspended beam and block floors or pre-cast concrete slabs. RIW. RIW Sheetseal 9000 DPC has been awarded British Board of Agreement Certificate 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. However, we are committed to continually improving. Enquire Now. The. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No drying time l Sulphate resistant RIW SHEETSEAL 9000 DPC Sheetseal 9000 DPC is a high performance polymeric material, available in widths from 100mm to 1000mm wide, supplied in rolls 20m long. Aerofil 1’s low compressive strength prevents the transfer of load across joint interfaces and makes it ideal for forming soft compression joints and expansion. Gas Seal Black complies with latest codes of practice as published by. • Where these pass through sheeting, make junctions completely impervious using RIW Sheetseal 226 or Easy application. Installed at the bottom of basement walls and linked to the Hydroduct sheet an alternative to a perforated sub soil drainage pipe. Sheetseal 226 is typically used as a basement tanking system or as a ground floor damp proof. For more information about our DPC and cavity tray. Joint laps: Side and end laps minimum 100 mm are recommended; end joints staggered. Excellent chemical resistance. 0 weight per unit (kgm 2) 1. Based on a composition of Ethylene Propylene rubbers and polyester fibres which increases the tensile strength and elongation at break making the system more resistant to tearing and puncturing. RIW Sheetseal 226 Self Adhesive Membrane Grace Bituthene 3000 Self Adhesive Membrane Fosroc Proofex 3000/4000 Self Adhesive Membrane Ruberoid Plasprufe Self adhesive Membrane Marley Marleyseal Self Adhesive Membrane Alderborough Alderprufe Se; Visqueen Self Adhesive Membrane; RS000348; Heat Bonded Heavy Duty Tanking. View. Available in 15mm , 20mm, 26mm and 32mm options. 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. The product is typically used for waterproofing retaining walls, floors, reservoir roofs, etc. Features & Benefits of Toughseal. uk. ESD01-floor to wall toe with self adhesive. The RIW Sheetseal 9000 DPC 450mm x 20m boasts excellent mortar bond strength, ensuring a secure and reliable seal. 05m x 19. Read the pdf to find out its technical specifications and installation details. Delivery and Return. Compare. GCP Hydroduct Coil 150mm quantity. Settpoint is self-smoothing, exceptionally strong and contains shrinkage compensating agent. uk 1. Suitable for sealing between overlaps in a membrane. 1. How to use RIW Sheetseal Primer. co. RIW Limited 487 / 488 Ipswich Road Slough SL1 4EP. Specifications. Contact Us. 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. 7m2 per litre / per coat. Sheetseal Primer. CI/SfB TN6 L6813. BENEFITS l Totally waterproof l Resists up to 100m head of positive and negative water pressure l Seamless and fully bonded l Applied to damp surfaces l Abrasion and impact resistant l Quick and easy to apply by hand or spray l Environmentally. pdf; ESD03-3D against existing structure. 05m x 19. Hyload Original DPC 112. Sheetseal 9000 DPC is a flexible polymeric damp proof course sheet material manufactured from a mixture of thermoplastic polymers and additives. £ 0. BENEFITS Water and water vapour barrier Factory controlled thickness Elastic and flexible No drying timeRIW Sheetseal 9000 DPC 375mm x 20m. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. <p>A cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen and rubber self-adhesive layer with a removable reinforced silicone release paper. 2. BENEFITS l Fully recyclable l Does not contain pitch, tar or bitumen l Tough, durable and puncture resistant l Flexible and easy to handle l Excellent mortar bond strength3. FEATURES AND BENEFITS : Excellent weather resistance and durability , Low maintenance white finish , May be over-painted when dry with a suitable masonry paint if required , Easy and quick to apply , Simple to finish . Read the pdf to find out its technical specifications and installation details. covering its use to provide horizontal, vertical or stepped damp-proof courses, in either solid or cavity masonry walls. 00 inc. The. Waterproofing Admixture. Data Sheet. 1. RIW Flexiseal Pro. RIW Gas Seal Tape . Sheetseal 9000 DPC. Associated ancillary products such as thruty sleeves , thruty cones , wing nuts , waler plates, and tie bar connectors are available. A “needle-punch” process interlocks the geotextiles together forming an extremely strong composite that maintains a consistent layer of Bentonite, as well as. 00. Products by RIW - We help design and project delivery teams keep water and ground gases out of buildings. Geo-vent - cuspated HDPE venting geo-composite incorporating geotextile to one side. 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. RIW Gas Seal GR DPC: Gas resistant damp proof course/ cavity tray, 450, 600 or 900 mm wide. Tokstrip. Price: £ 78. Description. RIW 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. l Water and water vapour barrier. DETAIL 1 Existing wall 2 x 1mm Cementseal 25 x 25 Cementfill HB (minimum) RIW Waterproofing membraneRIW Cementfill HB - Cement based waterproof high build repair mortar for profiling and providing fillets. For more information about our DPC and cavity tray systems, contact the RIW Technical Department. 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. Sheetseal Primer. LAC ® can also be used on the superstructure, as a vapour barrier behind cladding systems / plaster finishes. co. Description. POA. Waterstop. Flexiseal PRO, as a system, is used in all situations where a high performance tanking or damp proof membrane is required. Sheetseal Primer is a bitumen solution. Flam. All RIW products can be obtained through Builders Merchants or approved stockists. When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the. Liq. Flam. When designing Type A structures (as classified in BS8102:2009), the product applied correctly, is capable of providing the levels of protection. 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. 3. pdf. View. 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. 95. It consists of a geotextile layer and sodium bentonite, a clay that swells when wet and forms a seal. General enquiries: 0345 456 9594. 60 £33. STOT RE 1: H372 - Causes damage to organs through prolonged or repeated exposure . HelpIts large base area prevents puncturing of polythene or groundheave products and provides a stable support for the reinforcing steel. 1. Was told this would be enough. Download a digital version or request a hard copy delivered directly to your door. PACKAGING Sheestseal 226: 1050mm x19. faced with cement based boards. Size: 5ltr can or 25ltr drum. 7 (1) excluding release paper 4. Match case Limit results 1 per page. Flam. BENEFITS l Compliant with BS 8485: 2015 l Methane and carbon dioxide barrier Features & Benefits of Cementseal. Sheetseal Primer is a bitumen solution. Geo-vent - cuspated HDPE venting geo-composite incorporating geotextile to one side. Double Drain can also be used to provide excellent. slab bearings andDownload data sheets Search products by application Download typical details Find your local stockist Take one of our online CPD’s. DPM Blue; DPM Red;. Telephone. NBS BIM object standard. Specialist Services. 05m x 1. POA. RIW Solaflect -a solar reflective coating which offers protection against infra red and ultra violet attack. Self-adhesive, damp-proofing, waterproofing and gas retardant membrane. A bit more from me. SIKA Waterproofing & Concrete Repair Products. 5 width (m) 1. 3. Sealing not required. Cementseal RIW. RIW SHEETSEAL 226 · 2014-07-08 · RIW SHEETSEAL 226 Sheetseal 226 is a cold applied, high density. RIW SHEETSEAL 9000 DPC Sheetseal 9000 DPC is a high performance polymeric material, available in widths from 100mm to 1000mm wide, supplied in rolls 20m long. £157. The RIW Sheetseal 9000 DPC is unaffected by extremes of temperature, making it suitable for various environmental conditions. 1W/m2K) and air tight (0. RIW Toughseal protects against impact and abrasion and is ideal for. Coverage: 5-7m²/ltr. Sizes. PACKAGING Double Drain 2m wide x 15m long rolls Adhesive Tape 150mm wide x 15m long rolls Top Edging Strip 2m lengths X-Cramps Bags of 60 RIW Arc House, Terrace Road South, Binfield, Bracknell, Berkshire, RG42 4PZ Technical enquires tel: 01344 397777 Commercial enquires tel: 01344 397788. Sheetseal 226 is typically used to provide a water and water vapour barrier in all forms of construction, particularly where large unobstructed areas. Easy application. High performance polymericdamp proof courses (DPCs) and cavity tray systems, are designed to damp proof walls by preventing the passage of moisture from the ground, through masonry, up into the fabric of the building, and/or at as a cavity tray to prevent downward movement of water. Detail 1 - External Drainage Detail 2 - Top of Wall Double Drain Sub-soil drainage as required See DETAIL 3 RIW Membrane Sheetseal 9000 Cavity Tray Top Edging Strip See DETAIL 2 Double Drain. Non Shrink Grouts / Epoxy Grouts & Chemicals. 5. It is typically used as a tanking membrane in accordance with BS8102:2009, a damp proof membrane to ground floors and as a vapour barrier behind cladding and plaster. Manufactured from virgin material, not recycled waste. co. Crystalline Quartz (Silica Flour) 14808-60-7238-878-4 1 - 10% SECTION 4: First aid measures 4. Sheetseal 9000 DPC is used to provide horizontal bed joints vertical DPC or stepped damp proof courses in either solid walls or cavity walls. RIW STRUCTURESEAL Structureseal is a highly effective waterproofing composite, of high strength green coloured geotextile, and sodium bentonite. pdf. Gas Seal Black complies with latest codes of practice as published by. Gas Seal Black can be seam welded to form a monolithic membrane, but the laps can also be sealed with a range of Gas Seal Ancillary tapes. The tape is generally used to seal down loose edges formed as a result of lapping gas resisting membranes. View. 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. Tie Bar is produced from high tensile steel with a screw thread ( deformation conforming to ASTMA 618 for reinforcing steel bars ). Gas Seal Ancillaries Data Sheet. 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. Seamless and fully bonded. BENEFITS Water and water vapour barrier Factory controlled thickness Elastic and flexible No drying time RIW Toughseal – 5L & 20L. RIW Limited 487 / 488 Ipswich Road Slough SL1 4EP. Product. POA. Sheetseal Primer: 5 and 25 litre containers STORAGE Sheetseal 226: There are no special requirements, 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 product is typically used for waterproofing retaining walls, floors, reservoir roofs, etc. A cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen and rubber self-adhesive layer with a removable reinforced silicone release. 4. RIW Protection Board is used for the protection of waterproof membranes against mechanical damage, pedestrian or vehicular traffic and abrasion caused by backfilling. Apply in two coats at a minimum application rate of 4m2 /litre per coat. Concrete Treatments & Coatings. 4. POA. ESD01-floor to wall toe with self adhesive. Read full description. £ 0. co. 90 inc vat on small, lightweight orders and £22. RIW CEMENTSEAL Cementseal is a two component, polymer modified, cement based, waterproof coating for concrete and masonry. Self-adhesive, damp-proofing and. 4 Ancillary items used with the membranes include: RIW Sheetseal Primer — a solution of bitumen in a petroleum aliphatic hydrocarbon, supplied. POA. 05M x 19. RIW STRUCTURE SEAL. The product generally requires. by RIW Add to collection. Seamless and fully bonded. 150mm x 20m long rolls. Address. BENEFITS l Water and water vapour barrier l Factory controlled thickness l Elastic and flexible l Damage easily repaired l No. Sheetseal 226 is a cold applied, high density polyethylene film, coated with a bitumen/rubber self-adhesive layer with a removable reinforced silicone paper. Sheetseal 9000 DPC; Sheet Applied Systems. EC No. Sheetseal 9000 DPC is a flexible polymeric damp proof course sheet material, manufactured from a mixture of thermoplastic polymers and additives. Damp Proof Course & Brickwork Products. Sheetseal GR is typically used where a methane. Self-adhesive, damp-proofing, waterproofing and gas retardant membrane. RIW Bitumen Protection Board is an excellent choice because it is resistant to ground salts, water, and corrosive chemicals. RIW Cementseal Datasheet. uk. November 2013. Two coats of RIW LAC will be applied using brushes and rollers up to a 2 Metre height. Call for Price. Download Product Info (PDF) Sheetseal 9000 DPC - a range of high performance polymeric dpc's, and pre-formed cavity trays, compatible for use with all RIW membranes. The product generally requires a primer for vertical or sloping surfaces ie. Plastic Tric Trac Spacer. 94 £189. l Factory controlled thickness. e. 05 roll length (m) 19. Ruberoid Hyload Original DPC quantity. pdf. Learn more about its benefits, applications and installation in this data sheet. Heviseal - Liquid Applied Waterproof Systems RIW. RIW Sheetseal 226 accommodated the differing movement capabilities of a combination of modern building techniques and materials with ease. 96. each spacer is capable of holding the steel at two different heights. 10 metre. Connectors must be used to join Hydroduct Coil 150 to sub-soil drains. RIW Sheetseal 9000 DPC is strong and flexible with good workability, for building into masonry to provide an efficient method of. pdf. Contact Us. The 3mm thick bitumen board helps to protect the membrane from. RIW Sheetseal Primer is a bitumen solution. RIW Sheetseal 226 / 226 S Sheetseal 226 / 226 S is a cold applied, high density polyethylene film, coated with a bitumen/rubber self adhesive layer with a removable reinforced silicone paper. It is designed for below ground vertical and. Data Sheet. The RIW product range has expanded and evolved over the years, to suit. Sheetseal 226 is typically used as a basement tanking system or as a ground floor damp proof. RIW Jointing Tape Used with RIW Sheetseal 9000 DPC, to join rolls together, and/or to lap the product onto other items. 05m RIW products are non-returnable due. RIW Cleaning Solvent Used for cleaning brushes etc, or to re-activate resin-based coatings. £331. BENEFITS l Pre-applied tanking systems l Suitable for wet weather and low temperature applications l Quick and easy to apply l Does not require additional drainage or protection l Primers. Sheetseal 9000 DPC is used to provide horizontal bed joints vertical DPC or stepped damp proof courses in either solid walls or cavity walls. Two colour coded coats. RIW Sheetseal Primer 5L. co. Gas Seal Black Data Sheet. Fully compatible with RIW waterproofing systems. The product is typically used to reduce the passage of. Resistant. ANCILLARY PRODUCTS RIW Limited produce a range of ancillary products for use with RIW Sheetseal 9000 DPC, which include: Seal together using 50 x 5mm bead of RIW Sealing Compound, in centre of lap. 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. Label elements Hazard Statement EUH066 - Repeated exposure may cause skin dryness or cracking. Two colour membrane for on-site quality control. The product generally requires a primer for vertical or sloping surfaces, ie: Sheetseal Primer. RIW SHEETSEAL 9000. Technical. DETAIL 1 Existing wall 2 x 1mm Cementseal 25 x 25 Cementfill HB (minimum) RIW Waterproofing membraneRIW Sheetseal 226, width 150 mm. pdf. Self-adhesive butyl tape. The membrane must always be covered. RIW / 02: RIW Sheetseal Primer 2. The 9000 dpc RIW Sheetseal 226 to seal cavity tray to RIW LAC product can effect sensitive skins. RIW are a leading waterproofing and damp proofing product supplier. BENEFITS l Fully recyclable l Does not contain pitch, tar or bitumen l Tough, durable and puncture resistant l Flexible and easy to handle l Excellent mortar bond strength Toughseal should be applied immediately after mixing. 05m x 1. RIW . 05m roll (20m²) Sheetseal Primer. Specialist Construction Supplies has built up an enviable reputation for outstanding service, product quality and product choice. Simple to detail in critical areas. Enquire Now. RIW Sheetseal 9000 DPC 600mm x 20m. Sheetseal 9000 DPC is used to provide horizontal bed joints vertical DPC or stepped damp proof courses in either solid walls or cavity walls. Material :Price: £ 152. NBS Source is the new home of the NBS National BIM Library - BIM objects and Revit families (free to download). The product generally requires a primer for vertical or sloping surfaces, ie. A list of approved stockists is available from RIW’s offices. Data Sheet. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. RIW Structureseal is a waterproofing composite that can be applied before concrete is poured. STOT RE 1: H372 - Causes damage to organs through prolonged or repeated exposure . POA. Settpoint. RIW STRUCTURESEAL Structureseal is a highly effective waterproofing composite, of high strength green coloured geotextile, and sodium bentonite. RIW Structureseal GPT .