{"product_id":"kooltherm-k8-cavity-board","title":"Kingspan Kooltherm K8 Cavity Board Insulation","description":"\u003cp\u003eKooltherm K8 Cavity Board is Kingspan's insulation board for masonry cavity walls: a fibre-free, closed cell phenolic core faced on both sides with reflective composite foil. It fixes to the inner leaf on the wall ties and leaves a clear cavity to the outer leaf. Made in Australia in 25 mm (R1.10) and 40 mm (R1.75).\u003c\/p\u003e\n\u003ch3\u003eChoosing the thickness\u003c\/h3\u003e\n\u003cp\u003eKingspan publish wall totals with a 40 mm airspace. In double brick, 25 mm gives RT2.2 heat flow in and RT2.3 out, and 40 mm gives RT2.9 both ways. On a 190 mm corefilled block inner leaf the totals are RT2.2 both ways at 25 mm, and RT2.8 in, RT2.9 out at 40 mm. For brick veneer or a timber or steel frame, look at \u003ca href=\"\/products\/kooltherm-k12-framing-board\"\u003eKooltherm K12 Framing Board\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3\u003eCavity width and fire limits\u003c\/h3\u003e\n\u003cp\u003eKingspan require a residual cavity of at least 40 mm (AS 3700:2011, NCC Volume One B1D4), so the gap between the leaves has to take the board as well. Both example walls suit NCC Class 1 and 10a housing and Type C fire-resisting walls in Class 2 to 9 buildings. Type A and B walls in those buildings need a Performance Solution.\u003c\/p\u003e\n\u003ch3\u003ePacks and site notes\u003c\/h3\u003e\n\u003cp\u003eBoards are 1200 x 514 mm, sold in Kingspan's full packs: 20 boards (12.34 m²) at 25 mm, 12 boards (7.40 m²) at 40 mm. Both thicknesses are stocked. The foil conducts electricity and reflects UV, so keep it off bare cables and wear UV protective glasses in bright sun. Full figures are in the table below.\u003c\/p\u003e","brand":"Kingspan","offers":[{"title":"25mm - R1.10 (20 boards per pack, 12.34 m²)","offer_id":67636070645942,"sku":"100000065190","price":535.0,"currency_code":"AUD","in_stock":true},{"title":"40mm - R1.75 (12 boards per pack, 7.40 m²)","offer_id":67636070678710,"sku":"100000065144","price":411.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/k8-corner-white.jpg?v=1791896465","url":"https:\/\/awbm.com.au\/products\/kooltherm-k8-cavity-board","provider":"AWBM","version":"1.0","type":"link"}