{"product_id":"riw-double-drain","title":"RIW Double Drain","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRIW Double Drain is a cold-applied HDPE profiled drainage sheet bonded with a permeable geotextile filter fabric, engineered to manage groundwater at the external face of a structure. Rather than acting as a barrier membrane, it works by channelling groundwater away from the structure to land drainage, effectively relieving hydrostatic pressure and preventing water buildup against the waterproofed surface.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eThe geotextile filter fabric prevents fine soil particles from entering and blocking the drainage layer, ensuring long-term drainage performance even in challenging ground conditions. The product's good impact resistance also makes it an effective protection layer for primary waterproofing systems during backfilling and construction activity, guarding against mechanical damage that could otherwise compromise the membrane.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e\u003cstrong\u003eBenefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eDouble drain can be used on its own to isolate the structure from surrounding earth or in conjunction with a primary waterproofing system\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRelieves hydrostatic water pressure\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eHigh drainage capacity\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eGood impact resistance, providing protection to the primary membrane\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eQuick \u0026amp; easy to install\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003ePrevents ground water reaching structure\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eGood to know\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eEliminates necessity for granular backfill\u003c\/li\u003e\n\u003cli\u003eCan be applied to concrete masonry and a primary membrane.\u003c\/li\u003e\n\u003cli\u003eJ40 - Flexible Sheet tanking\/Damp Proofing in accordance with NBS Clauses\u003c\/li\u003e\n\u003cli\u003eSurfaces should be clean and dry before application\u003c\/li\u003e\n\u003cli\u003e Double Drain should be applied to the outer face of the structure, with the geotextile filter fabric facing outwards\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"RIW","offers":[{"title":"Default Title","offer_id":57127697809740,"sku":"BM05749","price":800.0,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/riw-riw-double-drain-1232467540.jpg?v=1776258530","url":"https:\/\/www.constructionsuppliesuk.co.uk\/products\/riw-double-drain","provider":"Construction Supplies UK","version":"1.0","type":"link"}