{"product_id":"kooltherm-k3-floorboard","title":"Kingspan Kooltherm K3 Floorboard Underfloor Insulation","description":"\u003cp\u003eKingspan Kooltherm K3 Floorboard is a rigid phenolic floor insulation board, R1.10 at 25 mm and R2.30 at 50 mm, made by Kingspan at Somerton in Victoria. It goes under a concrete slab on ground, or over the slab beneath a screed with hydronic heating.\u003c\/p\u003e\n\u003ch3\u003eWhich thickness\u003c\/h3\u003e\n\u003cp\u003eKingspan's 7 Star guide for Victoria and New South Wales uses the 50 mm board in its slab on ground and suspended timber floor examples. On a real job, the energy rating or the designer's floor calculation sets the thickness.\u003c\/p\u003e\n\u003ch3\u003eA product R-value, not the floor's\u003c\/h3\u003e\n\u003cp\u003eR1.10 and R2.30 are product R-values for the board alone. What the finished floor achieves depends on the slab and the ground or sub-floor space below it, and Kingspan points to NCC 2022 Specification 39 or CIBSE Guide A Section 3.5 to work it out. Keep the board off bare subsoil and out from under point loads and foundations, slab thickenings included.\u003c\/p\u003e\n\u003ch3\u003ePacks and coverage\u003c\/h3\u003e\n\u003cp\u003eBoards are 2400 x 1200 mm and come in Kingspan's full packs: 12 boards of 25 mm covering 34.56 m², or 6 boards of 50 mm covering 17.28 m². Both thicknesses are stocked.\u003c\/p\u003e\n\u003ch3\u003eOn site\u003c\/h3\u003e\n\u003cp\u003eLay a polythene DPM of at least 300 micron first. Loose-lay the boards break-bonded with the joints lightly butted, then cover them with polythene of at least 125 micron, laps of 150 mm taped, so wet concrete cannot get into the joints. Wet boards should not be used, so keep packs covered. Avoid solvent adhesives containing methyl ethyl ketone. Full figures are in the table below.\u003c\/p\u003e","brand":"Kingspan","offers":[{"title":"25mm - R1.10 (12 boards per pack, 34.56 m²)","offer_id":67636070711478,"sku":"100000065289","price":778.5,"currency_code":"AUD","in_stock":true},{"title":"50mm - R2.30 (6 boards per pack, 17.28 m²)","offer_id":67636070744246,"sku":"100000065291","price":650.0,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0732\/3995\/3590\/files\/k3-wedge-white.jpg?v=1791896466","url":"https:\/\/awbm.com.au\/products\/kooltherm-k3-floorboard","provider":"AWBM","version":"1.0","type":"link"}