Board Calculator Calculate = Add to Basket config = { calculator: 'board-cal', label: 'boards', coverage: 0.72, //simples: simpleqtys, //simple Trig: $j ('.super-attribute-select') }; board Cal.init (config); 1 board covers 0.72m 2 / boards are 1200 x 600mm. Pro Warmâ„¢ XP-PRO Insulation Boards are specifically designed for use with our electric underfloor heating systems on concrete/screeded floors. XP-PRO Insulation Boards are also used as a high quality insulation for our underwood heating systems, these boards are available in 6mm, 10mm, 20mm, 30mm & 50mm thickness. High compressive strength (30tonnes / m 2), light weight, high efficiency & low cost make this thermal board an ideal choice when fitting heating on to a poorly insulated concrete or screed base. If using with the underwood heating aluminium foil system they can be simply laid onto the surface in a staggered pattern. For undertile systems this product must be fixed down using our flexible tile adhesive. These boards are fully