SunStone cement coated Insulation Boards (4.3m²); board dimensions: 1200x600x10mm Pack of 6 At tirst, adding insulation can appear to be an extra Cost and work tor you but this is far from the truth. Using insulation boards in conjunction with SunStone underfloor heating reduces the running costs of the heating by as much as 50%. Insulation boards retlects the heat upwards into the floor tile instead of allowing heat to warm the concrete slabs below. Heat up time (tor the heated floor to reach the desired temperature) can be cut trom as much as 2.5 hours to just 20 minutes the thicker the insulation, the quicker the heat-up time. SunStone insulation boards are available in either cement coated (recommended as best solution) or uncoated in a range of thicknesses (Cement coated: 6mm,10mm and 20mm. Uncoated: 10mm and 20mm) and meets British Standards for tiling. Building Regulations require homes to be properly insulated and should be reterred to when determining the required thickness. SunStone recommends cement coated Insulation boards as the best solution to get the most ettective result trom your SunStone heating system. Features: Easy to cut and shape around fixtures with a knite or saw. Comes in a range of thicknesses to suit floor and wall applications. Can be fixed to solid or stud floors. High thermal insulation, resisting heat loss and increasing the heating system\'s etticiency. Offers sound proofing properties. Cement coated boards: ready tor tile/plaster - no additional prep work needed. Tech Specs: Cement coated board size: 1,200mm (L) x 600mm (W) Uncoated board size: 1,245mm (L) x 600mm (W) Cement coated board thickness: 6mm, 10mm, 20mm Uncoated board thickness: 10mm and 20mm Load bearing - 30 tonnes/m² Composition: Extruded polystyrene, each side faced with a nominal 0.5mm thick glassfibre mesh reintorced polymer-moditied cement mortar Composition: Extruded polystyrene, each side faced with a nominal 0.5mm thick glassfibre mesh reinforced polymer-modified cement mortar R Value: (6mm) 0.16; (10mm) 0.28; (20mm) Class \"O\"/ \"B1\" fire rated No primer required when used in conjunction with underfloor heating European compliant and CE marked