{"product_id":"air-cell-insulbreak-55","title":"Kingspan AIR-CELL Insulbreak 55 Thermo Reflective Roof Insulation","description":"\u003cp\u003eKingspan AIR-CELL Insulbreak 55 is a 5.5 mm thermo reflective roof insulation: a closed-cell, fibre-free foam core between an anti-glare foil facing and a plain foil facing. It goes under metal sheeting over battens or purlins, or across rafters under tile battens. Kingspan makes it at Taren Point, NSW.\u003c\/p\u003e\n\u003ch3\u003eRoof grade, not the thermal break\u003c\/h3\u003e\n\u003cp\u003eThe Kingspan data sheet covers Insulbreak 55, 70 and 90 but names only the \u003ca href=\"\/products\/air-cell-insulbreak-70\"\u003e70\u003c\/a\u003e and \u003ca href=\"\/products\/air-cell-insulbreak-90\"\u003e90\u003c\/a\u003e for the R0.20 thermal break in steel-framed construction. The 55 is R0.15 and Kingspan details it for roofs only. Our article on \u003ca href=\"\/blogs\/blog\/thermal-break-r02-explained\"\u003ethe R0.2 thermal break\u003c\/a\u003e explains the rule.\u003c\/p\u003e\n\u003ch3\u003eWhere the R-value comes from\u003c\/h3\u003e\n\u003cp\u003eKingspan's total R-values assume a nominal 40 mm reflective air space under metal roofing and 38 mm under tiles. A residential metal roof with a raked ceiling reaches RT 2.6 heat flow in and RT 1.3 heat flow out. Under tiles with a raked ceiling it is RT 2.0 and RT 1.1. Dust on upward-facing foil lowers them, and extra layers add nothing.\u003c\/p\u003e\n\u003ch3\u003eVapour barrier\u003c\/h3\u003e\n\u003cp\u003eIt is a Class 2 vapour barrier and a water barrier, not a vapour permeable membrane. Check the NCC condensation provisions for the climate zone first.\u003c\/p\u003e\n\u003ch3\u003eRoll and fitting\u003c\/h3\u003e\n\u003cp\u003eEach 1350 mm x 22.25 m roll covers 30 m² and weighs 7.7 kg. Lap joins 150 mm, or 50 mm when taped. Keep the anti-glare face towards the installer. Maximum span without support mesh is 2.4 m. Heat above 105 °C can damage it, and the foil conducts electricity. Full figures are in the table below.\u003c\/p\u003e","brand":"Kingspan","offers":[{"title":"1350 mm x 22.25 m (30 m²)","offer_id":67636071104694,"sku":"KSPN-Insulbreak 55","price":386.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/kingspan-aircell-insulbreak-roll-au-white_54912a8f-65ef-48f3-ac25-715ef2388e5d.jpg?v=1791896468","url":"https:\/\/awbm.com.au\/products\/air-cell-insulbreak-55","provider":"AWBM","version":"1.0","type":"link"}