{"product_id":"roof-razor-insulation-spacer","title":"Roof Razor® Insulation Spacer","description":"\u003cp\u003eRoof Razor is a galvanised steel spacer that sits on the purlin and holds the roof sheet clear of it, so the blanket underneath keeps its full thickness right across the support. It is 1200 mm long, which matches a standard blanket width, and comes pre-loaded with its fasteners.\u003c\/p\u003e\n\u003ch3\u003eWhy a spacer changes the numbers\u003c\/h3\u003e\n\u003cp\u003eInsulation crushed flat at the purlin is where most of the heat crosses a metal roof. A blanket rated at R2.5 that gets squeezed to nothing every 1200 mm is not delivering R2.5 across the roof, and no amount of extra thickness fixes that on its own. The spacer keeps the blanket at full loft over the support, which is the whole point of specifying one. \u003ca href=\"\/blogs\/blog\/roofing-blanket-r-values\"\u003eRoofing blanket R-values\u003c\/a\u003e explains the gap between the number on the roll and the number the roof achieves.\u003c\/p\u003e\n\u003ch3\u003ePicking the height\u003c\/h3\u003e\n\u003cp\u003eChoose from the blanket you are using, not from the roof pitch. The 60 mm spacer suits 75 to 80 mm blanket, the 85 mm suits 100 to 120 mm blanket, and the 115 mm is for thicker build-ups. Six pieces per pack gives 7.2 lineal metres.\u003c\/p\u003e\n\u003ch3\u003eBefore you order\u003c\/h3\u003e\n\u003cp\u003eCheck the purlin. The standard spacer needs a minimum 1.2 BMT purlin with a full 50 mm flat surface, because a narrower flange will not take the fixing pattern. Standard version covers wind regions A and B, and a cyclonic version is made for regions C and D. If you are fixing to timber battens, order the version without pre-loaded screws.\u003c\/p\u003e\n\u003cp\u003eDead load capacity is 205 kg between the legs regardless of span, and the spacer is steel, so it adds no fuel load. Full structural figures are in the table below, and \u003ca href=\"\/blogs\/blog\/metal-roof-insulation-australia\"\u003eMetal roof insulation in Australia\u003c\/a\u003e shows where the spacer sits in the layer order.\u003c\/p\u003e","brand":"Fletcher Insulation","offers":[{"title":"Pre-loaded screws \/ 60mm (6pk, 1200mm)","offer_id":45225008890038,"sku":"SQ7719213","price":97.99,"currency_code":"AUD","in_stock":true},{"title":"Pre-loaded screws \/ 85mm (6pk, 1200mm)","offer_id":45225008922806,"sku":"SQ8638150","price":97.99,"currency_code":"AUD","in_stock":true},{"title":"Pre-loaded screws \/ 115mm (6pk, 1200mm)","offer_id":45225008955574,"sku":"SQ9782485","price":111.05,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/product-roof-razor-720x720px-1.webp?v=1782756319","url":"https:\/\/awbm.com.au\/products\/roof-razor-insulation-spacer","provider":"AWBM","version":"1.0","type":"link"}