{"product_id":"knauf-170mm-combi-cut-insulation-loft-roll-44-6-49m2","title":"Knauf 170mm Combi-cut Insulation Loft Roll 44 6.49m2","description":"\u003cdiv class=\"product-page__body__info-wrapper\"\u003e\n\u003cdiv class=\"text-block small-text color-light-gray\"\u003e\n\u003ch5\u003eProduct Description:\u003c\/h5\u003e\n\u003cp dir=\"ltr\"\u003eKnauf Loft Roll 44 Combi-Cut is a flexible glass mineral wool insulation roll, 170mm thick and covering 6.49m². It is used for thermal insulation of pitched roofs at ceiling level, laid between and over ceiling joists, and is equally suitable for insulating suspended timber floors.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003eThe Combi-Cut format is what makes the roll quick to work with in a loft. It is partially cut along its length so it can be separated by hand into narrower widths to fit between standard joist centres, or left whole and rolled out full width across the joists for the top layer, which removes most of the cutting from the job.\u003c\/p\u003e\n\u003cp dir=\"ltr\"\u003e\u003cspan\u003eThe 44 \u003c\/span\u003e\u003cspan\u003edesignation refers to \u003c\/span\u003e\u003cspan\u003ethe material's \u003c\/span\u003e\u003cspan\u003ethermal conductivity \u003c\/span\u003e\u003cspan\u003eof 0.044 W\/mK, which \u003c\/span\u003e\u003cspan\u003eat 170mm gives an \u003c\/span\u003e\u003cspan\u003eR-value of around \u003c\/span\u003e\u003cspan\u003e3.86 m²K\/W. The 170mm \u003c\/span\u003e\u003cspan\u003ethickness is the one \u003c\/span\u003e\u003cspan\u003emost commonly laid as \u003c\/span\u003e\u003cspan\u003ethe upper layer over \u003c\/span\u003e\u003cspan\u003ea 100mm roll between \u003c\/span\u003e\u003cspan\u003ethe joists, because \u003c\/span\u003e\u003cspan\u003ethe two together come \u003c\/span\u003e\u003cspan\u003eto 270mm — the depth \u003c\/span\u003e\u003cspan\u003ecurrently recommended \u003c\/span\u003e\u003cspan\u003efor loft insulation. \u003c\/span\u003e\u003cspan\u003eRolled out at right \u003c\/span\u003e\u003cspan\u003eangles across the \u003c\/span\u003e\u003cspan\u003ejoists, the top layer \u003c\/span\u003e\u003cspan\u003ecovers the timbers \u003c\/span\u003e\u003cspan\u003ethemselves and \u003c\/span\u003e\u003cspan\u003eremoves the cold \u003c\/span\u003e\u003cspan\u003ebridging that would \u003c\/span\u003e\u003cspan\u003eotherwise run through \u003c\/span\u003e\u003cspan\u003ethem. Glass mineral \u003c\/span\u003e\u003cspan\u003ewool is lightweight, \u003c\/span\u003e\u003cspan\u003eresilient, and \u003c\/span\u003e\u003cspan\u003enon-combustible, and \u003c\/span\u003e\u003cspan\u003esits snugly without \u003c\/span\u003e\u003cspan\u003eslumping or leaving \u003c\/span\u003e\u003cspan\u003egaps, which is where \u003c\/span\u003e\u003cspan\u003emost of the \u003c\/span\u003e\u003cspan\u003eperformance is lost \u003c\/span\u003e\u003cspan\u003ein a poorly laid \u003c\/span\u003e\u003cspan\u003eloft. Wear gloves, a \u003c\/span\u003e\u003cspan\u003edust mask, and long \u003c\/span\u003e\u003cspan\u003esleeves when \u003c\/span\u003e\u003cspan\u003ehandling, keep the \u003c\/span\u003e\u003cspan\u003einsulation clear of \u003c\/span\u003e\u003cspan\u003edownlighters and \u003c\/span\u003e\u003cspan\u003eflues, and do not \u003c\/span\u003e\u003cspan\u003eblock eaves \u003c\/span\u003e\u003cspan\u003eventilation.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch5 dir=\"ltr\"\u003eSpecification:\u003c\/h5\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv id=\"accordion\" class=\"product-page__accordian\"\u003e\n\u003cdiv id=\"collapse_specs\" class=\"collapse show\"\u003e\n\u003cdiv class=\"product-page__spec-table-wrapper\"\u003e\n\u003ctable class=\"product-page__spec-table\"\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eKnauf\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eCoverage\u003c\/td\u003e\n\u003ctd\u003e6.49m2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eDepth\u003c\/td\u003e\n\u003ctd\u003e170mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eLength\u003c\/td\u003e\n\u003ctd\u003e5700mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eThermal Conductivity\u003c\/td\u003e\n\u003ctd\u003e0.044W\/mk\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eThickness\u003c\/td\u003e\n\u003ctd\u003e170mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd class=\"product-page__spec-table__heading\"\u003eWidth\u003c\/td\u003e\n\u003ctd\u003e1140mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Home \u0026 Trade","offers":[{"title":"Default Title","offer_id":55403683348807,"sku":"INS002","price":33.5,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1016\/7759\/6999\/files\/INS002.jpg?v=1791879167","url":"https:\/\/homeandtrade.co.uk\/products\/knauf-170mm-combi-cut-insulation-loft-roll-44-6-49m2","provider":"Home \u0026 Trade","version":"1.0","type":"link"}