7. Compare. Data Sheet. Data Sheet. Technical Hotline 01753 944200. Related products. All applications. Jump to: Specification data ; BIM objects RIW Sheetseal 226 was also used internally to protect the floor and was linked to the vertical application of the RIW Cavity Drain. Designed for use with RIW Cavity Drain systems. RIW Cavity Drain allowed water to be directed away from internal finishes to a maintainable land drain below the structure. Waterstop-RX is designed for both continuous and intermittent hydrostatic conditions. 1 RIW Cavity Drain R20 is satisfactory for use as a damp-proof membrane on internal faces of walls and floors of all types of existing construction that require a large air gap for a high drainage volume. Steel Reinforcement Mesh & Rebar. 1 RIW Cavity Drain R7 is used as a damp-proof membrane on walls, floors and vaulted ceilings, above and below ground, in new construction or in existing buildings over a contaminated or damp background. 35mm ( 60mt ) Price: £ 54. Technical number: 01753 944200. Good to see the RIW Cavity Drain materials on site and ready for the next install 👌🏻 #waterproofingsolutions #riw #watermanagementSCS Cavity Closers quantity. The above performance figures are typical values and should not be considered a product specification. Technical number: 01753 944200. On high risk sites, such as those with deep basements. Sales number: 01753 944210. 07m wide x 20m long Brick Plugs Box of 100 RIW offer a sump and range of sump pumps, maintainable water management drainage channels, along with control panels and alarms to complement our cavity drainage membranes. Landscape walls are much less critical but often require a retaining wall waterproofing membrane to prevent dampness from the ground spoiling the aesthetic nature of the design, with weep holes being incorporated. RIW Cavity Drain allowed water to be directed away from internal finishes to a maintainable land drain below the structure. Gas Seal Black Data Sheet. Designed for use. Product. Used in conjunction with Sealing Rope to provide a sealed fixing through RIW Cavity Drain R20 and R7. uk or contact technical@riw. The membrane can be positioned within the ground floor construction either above or below the structural floor. 83 (inc. 12 x 100mm x 2. Technical number: 01753 944200. Gas membranes and coatings may be used for gas protection, above and below ground level and as an effective damp proof system. The product is 6mm thick and supplied in rolls 0. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Cavity Drain R20 2. Used in conjunction with Sealing Rope to provide a sealed fixing through RIW Cavity Drain R20 and R7. RIW Cementseal - Waterproof Coating System . Waterproofing above ground level;RIW produce a range of ancillary products for use with LAC which include: Cementfill FC - Cement based waterproof fairing coat and repair mortar for filling minor holes, voids and defects. RIW/TD/401 AQUA CHANNEL in rebate with masonry lining. Technical number: 01753 944200. A “needle-punch” process interlocks the geotextiles together forming an extremely strong composite that maintains a consistent layer of Bentonite, as well as protecting it from. The Aqua Pump Pro range of sump pumps, and Aqua Channel products, has been developed specifically for the specification market, and are designed to remove ground water. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Other systems are available for specific uses, refer to Typical Uses inside. RIW Cavity Drain is a profiled HDPE sheet cavity former that provides a clear and safe route for water seepage into an existing or new basement. pdf. 45. CI/SfB Tn6 L6813 September 2013 RIW CAVITY DRAIN R20 R20 is manufactured from1. Our Products. 7mt pack. 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. Description. RIW’s design strategy applied RIW Cavity Drain R20 directly to the contiguous piles. Cavity Drain R20 has been awarded British Board of Agrément Certificate No. A special blend of oils with highly active surfactants that gives excellent release with no staining. It has a high flow capacity to alleviate hydrostatic pressure on below ground structures and has a high puncture resistance. Download data sheets Search products by application Download typical details Find your local stockist Take one of our online CPD’s. Primer 5 litre tin. Designed to withstand expected site conditions, they can be re used several times. Visit us at riw. About Us; Products + Browse by application. Basement Waterproofing & Tanking. 00. The basement can vary from habitable space to car parking, and whatever the usage, it is vital the correct waterproofing system is selected when waterproofing the Podium Deck. Sika® BituSeal S-115 is a post applied self-adhesive waterproofing sheet membrane. RIW Cavity Drain R20 - HDPE studded membrane . RIW produce a range of ancillary products for use with Sheetseal 226 which include: Cementfill FC - Cement based waterproof fairing coat and repair mortar for filling minor holes, voids and defects. It is easy to install, durable and resistant to chemicals and root penetration. SKU: 014cd. All applications. We aim to offer complete waterproofing assurance to Architects, Engineers and Contractors. Whilst Cavity Drain R20 may be used vertically and horizontally, Cavity Drain R7 is generally only used vertically. It is suitable for application to basement walls, floors, and soffits by trowel or spray. Verified 6 months ago . All you need to do is answer a few basic application questions and we'll do the rest. About Us; Products + Browse by application. Enquire Now View. rolls FLOORS Cavity Drain R20 2. RIW LAC can also be used as an effective barrier to. Damp Proof Course & Brickwork Products. Ruberoid Hyload Original DPC. 1 Datasheet RIW Cavity Drain R20 Cavity Drain R20 is used as internal cavity drainage membrane system, to collect water entering the structure. Our modified epoxy paint RIW Flexiseal Pro was thenA full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. pdf. Cementfill HB - Cement based waterproof high build repair mortar for profiling and providing fillets. 2 boxes--- 6 No. Type C protection is known as drained protection and is most commonly formed using a Cavity. All applications. 0 x 20m roll --- --- 5 No. POA. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Expanded Metal Sheet is a galvanized permanent shuttering system with a unique design incorporating mesh and roll formed ribs. Sheetseal 9000 DPC; Sheet Applied Systems. As the building rose out of the ground, the waterproofing strategy had to adapt to maintain continuity as both the structure and the retaining walls were stepped. Technical number: 01753 944200. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. A single component, thixotropic, polymer modified cement based rapid hardening waterproof high build repair mortar. Thruty Cones/ Tie Rod Cones quantity. 65. pdf. STRUCTURAL DRAINAGE SYSTEMS CAVITY DRAIN DOUBLE DRAIN PLASTER DRAIN SUMP PUMPS AQUA CHANNEL You can find out more about the products on the mini data sheets within this guide. Engineer to advise. RIW sump pumps provide effective mechanical drainage for all below-ground structures where a cavity drain system is being installed. 0 company wide current stock level. Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika. Encon Construction Products offers a huge range of construction products & accessories, primarily for use in infrastructure and major building projects. 10mm Corkpak Sheets. co. Sales number: 01753 944210. co. Quantity. Sealer prior to any installation of cavity drain membranes, free lime can block up drainage systems. RIW . Technical number: 01753 944200. Bituthene 4000 is used with Primer B1 on prepared vertical and sloping surfaces and suspended slabs. 12mm x 80mm x 6mt 18mts per box. RIW . RIW Sheetseal Damp Proof Course; Insulated DPC Damp Proof Course; Gas Resistant Damp Proof Course; Brick Reinforcement; Cavity Closers; Airbricks & Telescopic Vents; Basement Waterproofing & Tanking. Sika Pump Pro Battery Back Up. GCP Aerofil 2 Joint Filler quantity. 85. Waterproofing above ground level;Home > Waterproofing > Sheet Drainage > RIW R7 Cavity Drain 2. According to BS8102:2009 there are three types of Protection. What is an Aqua Channel? An Aqua Channel is a moulded PVC drainage conduit which is placed around the perimeter of the basement or along a retaining wall, in a recess formed in the edge of the slab or within a spacing layer created by XPS. Available in 15mm , 20mm, 26mm and 32mm options. Sales number: 01753 944210. uk or contact. RIW MultijointUsed to provide a seal between ‘flanged’ overlaps of RIW Cavity Drain R7. All vertical surfaces should be primed using Membrane Primer. Cavity Drain R20 and R7 are typically used in basements and sub-structures, to channel water ingress to a sump or collection point for disposal. RIW Cavity Drain is a profiled HDPE sheet cavity former that provides a clear and safe route for water seepage into an existing or new basement. ProofexLM Liquid Membrane. Suitable for horizontal, vertical and overhead applications. Both RIW Toughseal and RIW Sheetseal 226 were used to. Cavity Drain R20 & R7 are used as internal cavity drainage membrane systems, to collect water entering the structure. uk for data sheets, typical drawings and more. 2 boxes 1 No. Miothene 70 High Density Joint Filler quantity. Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika. Damp Proof Course & Brickwork Products. Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika Cavity Drainage System; Concrete Formwork & Shuttering. . RIW Brick Plugs fix the RIW Cavity Drain to wall and allow for screw in type wall-ties. Your product has been successfully added to your basketExpansion Joint Fillers. Data Sheet. Reinforcement & Concrete Slab Accessories. Uses as a structural adhesive for: Concrete elements , Hard natural stone , Ceramics, fibre cement. 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 Guidance on. pdf), Text File (. Waterproofing above ground level;A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. pdf. Product code : 82CCDST. Conclusion RIW was awarded the £400,000 contract to supply all of the integrated. The following is a summary of the assessment and technical investigations carried out on RIW Cavity Drain R7. Sales number: 01753 944210. Due to this risk, RIW Structureseal was used under the slab, with RIW Cavity Drain R7 providing protection for the walls. Cavity Drain R20 and R7 are typically used in basements and sub-structures, to channel wat. Tyler from Premcrete. 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. Once this is complete, a water resistant foil is also spirally wound over the kraft paper, sealing the column against. pdf. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Renders & Pointing Mortars. per m2 ie. Drained Cavity Systems. About Us; Products + Browse by application. 40mm Top Crack Inducer. 05/4232, covering its use on walls, floors and ceilings above and below ground. 05/4232, covering its use on walls and floors above and below ground. RIW only details masonryquestion of potential ground settlement. for every 50 linear metre run of channel, or 2 No. Cavity Drain R20 has been awarded British Board of Agrément Certificate No. Non Shrink Grouts / Epoxy Grouts & Chemicals. A mixture of bitumen, synthetic polymers. Verified by manufacturer 6 months ago . Phone: 01753 944200 or Email: technical@riw. General enquiries: 0345 456 9594. Description. All applications. RIW/TD/403 AQUA CHANNEL Typical intermediate floor detail. Cavity Drain R20 & R7 are used as internal cavity drainage membrane systems, to collect water entering the structure. RIW Cavity Drain R7 - HDPE studded membrane. Product code : 82CAT. 45. Description. Plastic Tric Trac Spacer. Plastic tric Trac Spacer quantity. Technical number: 01753 944200. Your product has been successfully added to your basketPrice: £ 83. RIW stands for 'Remember It's Waterproof', from an ad slogan in 1921. Technical number: 01753 944200. As mentioned above, prices can vary considerably due to many important factors. 12mm Miothene 70 Sheet. Cavity Drain Basement Waterproofing systems by Maclennen-LSE. 7 l Specification Guide to RIW Waterproofing Systems DRAINED CAVITY SYSTEMS Drained Cavity Systems within the basement or sub-structure form a continuous pre-formed cavity, which intercepts and drains away water ingress. It can also be used for external facade joints where a tougher seal is required. £4596. pdf; ESD04 floor wall detail bent. It is used as an expendable sleeve over tie bolts, facilitating their removal and also acting as a spacer to ensure correct width . Primer No 7. 20mm Expansionthene Sheets. Tokstrip & Longstrip - Joint Sealant for Manhole Chambers quantity. POA. Please refer to RIW Cavity Drain R20 & R7 data sheets for further. DPM’s can be applied to either a suitable blinding layer under the slab or internally to the top of the slab. RIW/TD/305 SHEETSEAL 9000 DPC: Cavity tray fixing to solid inner skin. per m2 ie. 00. Product code : 82CCDO. BENEFITS l Easy to install l High drainage capacity l High factor of safety l High compressive strength l Chemically resistant • Products Used: 2,000m2 Cavity Drain R20. Multi functional - acts as a combined protection layer and drainage layer; Range of thicknesses available - provides options for water flow capacity ; Large format rolls - rapid installation ;Sheets & Strips Available. Technical number: 01753 944200. Tokstrip & Longstrip - Joint Sealant for Manhole Chambers quantity. Sika CD Channel 2m. 10 metre. SIKA Waterproofing & Concrete Repair Products. Applied to damp surfaces. Technical number: 01753 944200. Design Considerations 4 General 4. 500 / pack. 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. Download BIM Sponsored RIW Gas Seal Black - Gas Resistant Membrane . Verified 7 months ago . pdf. For use on horizontal surfaces and on vertical surfaces where mortar or concrete can be supported by formwork. Non Shrink Grouts / Epoxy Grouts & Chemicals. Detail 1 - External Drainage Detail 2 - Top of Wall Double Drain Sub-soil drainage as required See DETAIL 3 RIW. 5mm translucent virgin high density polyethylene with studs approximately 8mm high. Sika Tricosal Metal Waterbar is a galvanised sheet with a layer of composite film on one side. We are proud to have installed these products onto some of the most prestigious projects in the UK. 50. Waterstop-RX is a flexible strip concrete construction joint waterstop that provides a positive seal by expanding upon contact with water. Sales number: 01753 944210. 55. rolls In addition to these components, Overtape will be required, as follows: CAVITY DRAIN R20 RIW Cavity Drain meets the standards to achieve a Grade 3 (BS8102:2009) basement as required on this project. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. About Us; Products + Browse by application. Other materials are also adhered to the Cavity Drain products using Overtape. 100mt pack. Waterproofing above ground level;Newton 8 mm CDM 508 eco Floor Recycled Cavity Drain Floor Membrane - 8 mm Recycled Cavity Drain Membrane . ¢ Wat | oA IW Caviy Drain fixed at 1 +? , ‘000m min. Effective barrier to Methane gas, Water and water vapour barrier , Factory controlled thickness ,. It is a cold applied, high density polyethylene film bonded to aluminium foil and coated with a bitumen/rubber self adhesive layer . RIW/TD/404 AQUA CHANNEL at bottom of secant piled wall. rolls FLOORS Cavity Drain R20 2. Enquire Now View. Home / Waterproofing by Application. This is a pretty helpful explanation. Product. RIW Cavity Drain Ancillaries Data Sheet. 07m x 20m. The product is supplied in 2m x 75m roll format. Ultrascape Flowpoint is ideal for all pavements where a rigid or bound void-free joint is required. About Us; Products + Browse by application. RIW Waterstop Literature View all literature . RIW Cavity Drain Overtape 150mm x 20m. co. not to exceed the drainage capacity of the system. 500ml. per m2 ie. uk W: Additional Info: Date: Project Ref: Scale @ A4: Drawing No: Drawn:Checked: Rev: 19/09/19NTSRRDK RIW CAVITY DRAIN: SEALED SYSTEM RIW/TD/411 RIW AQUA CHANNEL IN REBATE AT BOTTOM OF RETAINING WALL WITH DRY LINING 1. Technical number: 01753 944200. 2 boxes 1 No. Quantity. According to BS8102:2009 there are three types of Protection. CAVITY DRAIN R20 Overtape is used at wall/floor, wall/wall and wall to soffit junctions. Fosroc Nitoseal PU12 quantity. Uses : As a protection and drainage sheet for preformed sheet membrane waterproofing systems, liquid applied membranes and with the Sika® White. Secugrid 40/40 is a biaxially orientated high strength geogrid designed for use in civil engineering projects that demand good ground reinforcement or stabilisation. A cavity drain system is often referred to by Structural Waterproofing Designers as a means of waterproofing protection for underground structures. Drainage Types There are two principle forms of drainage, these are Natural (gravity feed) and Mechanical (Sump stations) and can be used in conjunction with falls or drainage channels depending on the design of the cavity drain systems. 20 X 2. RIW/TD/401 AQUA CHANNEL in rebate with masonry lining. RIW Gas Seal Black - Gas Resistant Membrane . Price: £ 59. Linkedin. Cavity Drain R20 and R7 are typically used in basements and sub-structures, to channel water ingress to a sump or collection point for disposal. A selection of Technical PDF documents for a range of RIW waterproofing products. Masterseal 590 is an ultra rapid setting mortar to plug active waterleaks and anchor fixings . 50mm Top Crack Inducer. RIW Cavity Drain R7. 65. Compare. Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika. RIW Structureseal is a bentonite sheet waterproofing composite of high swelling Sodium Bentonite encapsulated between a non-woven and woven geotextile. SIKA Waterproofing & Concrete Repair Products. co. RIW . Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika. RIW provided waterproofing expertise for the refurb and new build of additional student accommodation. Fixings: Provided there is not a primary membrane on the surface, then Double Drain can be fixed using RIW Plug and nails at 250mm centres along the top edge only (nails not supplied), or self-adhesive pins. Connectors must be used to join Hydroduct Coil 150 to sub-soil drains. Technical Hotline 01753 944200. A Drained Cavity within the basement or sub-structure is the provision of a continuous pre-formed cavity, which intercepts and drains away water ingress in accordance with BS8102: 2009 Type C (Drained) protection. Ground Stabilisation – Stormwater Systems. Cavity Drain R20 & R7 are used as internal cavity drainage membrane. The Technical PDFs are also available for download. RIW/TD/403 AQUA CHANNEL Typical intermediate floor detail. Sales number: 01753 944210. RIW/TD/404 AQUA CHANNEL at bottom of secant piled wall. 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 . Cavity Drain Cementfill FC Cementfill HB Cementflex Cementjoint Cementseal Double Drain Flexiseal Heviseal LAC Liquid GMRIW Cavity Drain Cavity Drain R20 & R7 are used as internal cavity drainage membrane systems, to collect water entering the structure. 19 (inc. Primer No 7. RIW offer a sump and range of sump pumps, maintainable water management drainage channels, along with control panels and alarms to complement our cavity drainage membranes. BIM object . Wykamol Cavity Drainage Membranes; Triton Cavity Membranes For Wall & Floors; Visqueen Cavity Drain System; RIW Cavity Drain; Sika. Liquid plastic roofing system broucherData Sheet. 96. Proofex Cavity Drain Sealing Tape 2mm x 30mm x 20m. Description. How to Specify. Sales number: 01753 944210. RIW Double Drain - Water Management System - HDPE studded membrane . Loosely adhering material and sharp protrusions should be removed by mechanical means. £4596. 25mm and 9mm wide in concrete and masonry, where both sides of the crack can be sealed to prevent resin drainage. 24mt pack. RIW. 2 Application The membrane is laid out ‘domes down' over the floor for the horizontal portion, with consecutive membrane widths laid out to create an overlap of two interlocking domes. There are many considerations to take into account including deck movement, differential movement, drainage, waterproofing continuity at expansion joints, drainage. 2 boxes 1 No. AquaPump Pro comprises a polyethylene sump, locking access cover and powerfulDescription. About Us; Products + Browse by application. RIW products are stocked by specialist distributors such as SIG, Resapol, Anchor Bay and Miers Construction who deliver over a wide area. uk. £94. Waterproofing above ground level;RIW produce a range of ancillary products for use with Cavity Drain R7 which include: Sealing Rope - a self-adhesive rope for sealing around services, fixings etc. RIW R7 Cavity Drain. VAT) Enquire Now View. Data Sheet. The grout powder, when mixed with water, produces a material that is cohesive, mobile, self compacting and displays excellent resistance to washout when brought into contact with. Wing Nuts to be used in conjunction with 15mm Tie Bar, 22mm Plastic Sleeving, Tie Bar Cones and Waler Plates. Shows how new basement waterproofing systems can be designed and installed. 95. 50. RIW Limited 487 / 488 Ipswich Road Slough SL1 4EP. Overtape is used at wall/wall and wall to soffit junctions, and outside non-flanged laps. The channel, which is pre-formed in a pentagonal shape with pre-drilled 19 mm drainage holes set 70 mm apart along its length, is fitted around the periphery of an internal floor at the vulnerable wall/ floor junction and can be. We pride ourselves on our fast, efficient, delivery service and high levels of customer care. What is an Aqua Channel? An Aqua Channel is a moulded PVC drainage conduit which is placed around the perimeter of the basement or along a retaining wall, in a recess formed in the edge of the slab or within a spacing layer created by XPS. It is fixed mechanically along its top edge using Platon-Cramp, which provides tear-resistant fixing-points. Sales number: 01753 944210. RIW Limited Arc House, Terrace Road South, Binfield, Bracknell, Berkshire, RG42 4PZ, England 13 1071-CPR-1196/1197A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Aquaplugs/Rubber Stoppers / Tie Hole Fillers quantity. Granules are chemically treated sodium bentonite. Price: £ 153. Non Shrink Grouts / Epoxy Grouts & Chemicals. A cavity drain system is often referred to by Structural Waterproofing Designers as a means of waterproofing protection for underground structures. 00. Technical number: 01753 944200. 6 company wide current stock level. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Your product has been successfully added to your basketAquaplug Rubber Stoppers 22mm. rolls FLOORS Cavity Drain R20 2. Flexiseal PRO, as a system, is used in all situations where a high performance tanking or damp proof membrane is required. POA . POA . Cavity Drain R20 is used in. Cavity Drain; Double Drain; Plaster Drain; Sump Pumps/Aqua Channel; Movement Joints. All surfaces should be smooth, clean and dry. SCS Cavity Closers quantity. Please refer to RIW Cavity Drain R20 & R7 data sheets for further. PACKAGING Cavity Drain R7 2. All applications. 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. Structureseal. Expandafoam strip comes in 15 mt rolls with a tear off strip , Expandafoam sheets are 2 mt x 1 mt and range in. X-Cramps: Provided there is not a primary membrane on the surface, then Double Drain can be fixed using X-Cramps and nails at 250mm centres along the top edge only (nails not supplied). Request Callback; 01753 944200; technical@riw. RIW Gas Seal HC Data Sheet. Preformed bitumen bonded cork joint filler board for critical water retaining, civil and structural expansion joints . Sealing Compound is a trowel-grade sodium bentonite/butyl-rubber based sealant, designed for use with Structureseal. A full list of data sheets, including liquid applied systems, DPC & Cavity Trays and many more PDFs - available to view online or download. Technical number: 01753 944200. The moulding profile prevents entry of soil and stones between the wall and membrane or into the drainage layer. Waterproofing above ground level;Overview. 6. A selection of Technical PDF documents for a range of RIW waterproofing products. 2 boxes--- 6 No. Nitofill LV Is a low viscosity system for the injection of cracks between 0. Seamless and fully bonded. RIW Aqua Channel along with RIW battery backed Sumps and Pumps were used to collect and pump away ground water to higher level. About Us; Products + Browse by application. RIW Cavity Drain. About Us; Products + Browse by application. Quantity. Sales number: 01753 944210. Gas/Radon Resistant. Overview RIW - We help design and project delivery teams keep water and ground gases out of buildings.