{"product_id":"expol-black-r1-8-underfloor-insulation","title":"Expol Black R1.8 Underfloor Insulation","description":"\u003cp\u003eExpol Black is a rigid expanded polystyrene (EPS) underfloor panel infused with graphite, which gives it its charcoal colour. It fits between the joists of a timber floor in the same way as \u003ca href=\"\/products\/expol-polystyrene-underfloor-insulation\"\u003eExpol White R1.4\u003c\/a\u003e: the same 60 mm thickness, the same concertina-cut edges and the same fixings. The difference is the rating: R1.8 vs R1.4 at the same 60 mm thickness.\u003c\/p\u003e\n\u003cp\u003eStandard white EPS slows heat by trapping air. In Expol Black the graphite also absorbs radiant heat, which is how the same board reaches R1.8. It can go into new homes before the floor goes down, or be retrofitted under existing floors.\u003c\/p\u003e\n\u003ch2\u003eWhen to choose Black\u003c\/h2\u003e\n\u003cp\u003eFor colder parts of NSW, such as the Tablelands, the Southern Highlands and alpine country (NCC climate zones 7 and 8), or for any job that needs a higher R-value without a thicker board. In milder areas, \u003ca href=\"\/products\/expol-polystyrene-underfloor-insulation\"\u003eExpol White R1.4\u003c\/a\u003e is the usual choice.\u003c\/p\u003e\n\u003ch2\u003eThermal performance\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eR1.80 at 60 mm (ASTM C518-04)\u003c\/li\u003e\n\u003cli\u003eR3.60 with two layers (120 mm)\u003c\/li\u003e\n\u003cli\u003eComplies with AS\/NZS 4859.1\u003c\/li\u003e\n\u003cli\u003eExpol states the board will not sag over time, and that its insulation performance is not affected by ageing or moisture.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSize we sell\u003c\/h2\u003e\n\u003cdiv class=\"pw-tablewrap\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003ePanel (mm)\u003c\/th\u003e\n\u003cth\u003ePanels per bag\u003c\/th\u003e\n\u003cth\u003eCoverage per bag\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\u003ctr\u003e\n\u003ctd\u003e1200 x 410 x 60\u003c\/td\u003e\n\u003ctd\u003e11\u003c\/td\u003e\n\u003ctd\u003e5.41 m²\u003c\/td\u003e\n\u003c\/tr\u003e\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003cp\u003e410 mm is the stocked width. 470 mm and 560 mm panels can be made to order: call us on (02) 8599 4562 for other widths.\u003c\/p\u003e\n\u003cp\u003eMeasure the gap between your joists before ordering. Joists vary, so measure a few. If a panel is too wide, slice down the concertina edge, leaving it about 5 mm oversize. The nominal length is between 1200 mm and 1240 mm; the width does not vary.\u003c\/p\u003e\n\u003ch2\u003eHow many bags\u003c\/h2\u003e\n\u003cp\u003eDivide the floor area by 5.41 and round up. Expol's guide:\u003c\/p\u003e\n\u003cdiv class=\"pw-tablewrap\"\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFloor area\u003c\/th\u003e\n\u003cth\u003eBags\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e10 m²\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e20 m²\u003c\/td\u003e\n\u003ctd\u003e4\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30 m²\u003c\/td\u003e\n\u003ctd\u003e6\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e40 m²\u003c\/td\u003e\n\u003ctd\u003e8\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e50 m²\u003c\/td\u003e\n\u003ctd\u003e10\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e60 m²\u003c\/td\u003e\n\u003ctd\u003e12\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e70 m²\u003c\/td\u003e\n\u003ctd\u003e13\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e80 m²\u003c\/td\u003e\n\u003ctd\u003e15\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e90 m²\u003c\/td\u003e\n\u003ctd\u003e17\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e100 m²\u003c\/td\u003e\n\u003ctd\u003e19\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e110 m²\u003c\/td\u003e\n\u003ctd\u003e21\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e120 m²\u003c\/td\u003e\n\u003ctd\u003e23\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003c\/div\u003e\n\u003ch2\u003eWhich fixing\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eExisting floors:\u003c\/strong\u003e \u003ca href=\"\/products\/expol-z-clips-50-pack\"\u003eExpol Z Clips\u003c\/a\u003e. They push in from below, with no nails, drilling or tools.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNew floors:\u003c\/strong\u003e \u003ca href=\"\/products\/expol-joist-saddles-50-pack\"\u003eExpol Joist Saddles\u003c\/a\u003e. They sit over the joists before the floor goes down.\u003c\/li\u003e\n\u003cli\u003eUse two per panel, at opposite corners. A bag of 50 fixes 25 panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eInstallation notes\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eKeep 200 mm clear of metal heating flues, recessed downlights and exhaust fans, and 50 mm clear of brick and concrete chimneys.\u003c\/li\u003e\n\u003cli\u003ePush each panel hard against the underside of the floor so there is no air gap.\u003c\/li\u003e\n\u003cli\u003eSleeve any cables that touch the panels in \u003ca href=\"\/products\/expol-wireguard-insulation-roll\"\u003eExpol Wireguard\u003c\/a\u003e, and never use a staple gun.\u003c\/li\u003e\n\u003cli\u003eNotch around pipes with a sharp knife and leave 100 mm clearance for maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe Installation tab has the step by step guide for new and existing floors.\u003c\/p\u003e\n\u003ch2\u003eGood to know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eDo not store in direct sunlight.\u003c\/strong\u003e Foamex warns that sunlight can damage the panels and void the warranty. Keep the bags under cover until you fit them.\u003c\/li\u003e\n\u003cli\u003eMade with a fire retardant. Spread of Flame Index 0 and Smoke Developed Index 5 (AS\/NZS 1530.3:1999).\u003c\/li\u003e\n\u003cli\u003e50 year Expol product warranty.\u003c\/li\u003e\n\u003cli\u003eNon-allergenic and non-irritating.\u003c\/li\u003e\n\u003cli\u003eUp to 25% recycled content where available. Clean panels and offcuts can be recycled at Foamex locations.\u003c\/li\u003e\n\u003cli\u003eAustralian made.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Expol","offers":[{"title":"New South Wales \/ 410 x 60 (11 Panels)","offer_id":59364603691340,"sku":"PWN-EXPOLBLK60410","price":95.7,"currency_code":"AUD","in_stock":true},{"title":"Australian Capital Territory \/ 410 x 60 (11 Panels)","offer_id":59364603724108,"sku":"PWA-EXPOLBLK60410","price":105.27,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1073\/8070\/3564\/files\/expol-black-r1-8-pack.jpg?v=1792552636","url":"https:\/\/pricewiseinsulation.com.au\/products\/expol-black-r1-8-underfloor-insulation","provider":"Pricewise Insulation","version":"1.0","type":"link"}