{"product_id":"riw-cementfill-hb","title":"RIW Cementfill HB","description":"\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRIW Cementfill HB is a single-component rapid hardening waterproof high build repair mortar, formulated using advanced cement chemistry combined with microsilica, fibre and styrene acrylic copolymer technology. The result is a low density, high strength mortar with enhanced polymer properties that cures quickly and performs reliably in demanding waterproofing applications.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eUnlike Cementfill FC which is designed for thin fairing and filling work, Cementfill HB is the high build option in the RIW cement-based range, capable of 5 to 80mm build-up in a single pass on horizontal, vertical and overhead applications. Its excellent low sag properties make it particularly well suited to vertical and overhead work where material retention is critical, as well as for forming fillets at internal corners.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eSupplied as a single-component system requiring only the addition of clean water, it is straightforward to mix and use on site. It can be applied to damp surfaces, is totally waterproof, and resists up to 100m head of positive and negative water pressure.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eCementfill HB is fully compatible with the wider RIW cement-based waterproofing system and is typically used alongside RIW Cementseal, Cementflex or Cementfill FC, with RIW Cementjoint used to reinforce joints and changes of plane.\u003c\/p\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eTypical Applications: High build structural repair mortar, Rendering and profiling on vertical, horizontal and overhead surfaces, Fillets at internal corners\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]\"\u003eReady for use on site, just add clean water\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eYields 13.2 litres for a 20kg powder\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eA 20kg tub covers 2.64m² at 5mm thickness or 42lm of 25 x 25mm fillet\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eRapid hardening \u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eTotally waterproof\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e5mm - 80mm build up in horizontal, vertical \u0026amp; overhead applications\u003c\/li\u003e\n\u003cli class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003eExcellent low sag properties\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\u003eThe entire substrate should be pressure washed. This method is also the best way to ‘saturate’ the surfaces, and remove soil, dust and any other loose debris from the\u003cbr\u003eexisting wall\u003c\/li\u003e\n\u003cli\u003eCheck mortar joints on masonry surfaces\u003c\/li\u003e\n\u003cli\u003eThe strength of the concrete sub base must be 20n\/mm²\u003c\/li\u003e\n\u003cli\u003eA primer is generally not required due to Cementfill being highly polymer modified\u003c\/li\u003e\n\u003cli\u003eIt should be mixed mechanically in a tub, using a drill or paddle mixer on slow speed. \u003cstrong\u003eDo not\u003c\/strong\u003e use a cement mixer\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"font-claude-response-body break-words whitespace-normal leading-[1.7]\"\u003e \u003c\/p\u003e","brand":"RIW","offers":[{"title":"Default Title","offer_id":57127698891084,"sku":"BM012178","price":116.96,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1046\/6715\/2716\/files\/riw-riw-cementfill-hb-1232467545.jpg?v=1776258389","url":"https:\/\/www.constructionsuppliesuk.co.uk\/products\/riw-cementfill-hb","provider":"Construction Supplies UK","version":"1.0","type":"link"}