The Foamglas® (Wallboard) thermal insulation boards of 1200mm x 600mm x…mm, are made of alumina silicate cellular glass composition having a density of 105kg/m3 and a thermal conductivity at 10°C of K=0.040 W/mK. The two primary faces of the boards have a polyethylene lining, factory applied with a bitumen film. They shall be adhered to the surface to be insulated using the blob method and an adhesive which complies with the specifications of the cellular glass manufacturer. If required, this adhesive can be used to fill the joints between the boards in order to make the whole system totally impermeable to water-vapour. Alternatively, the boards can be secured to the wall using two mechanical fasteners per board with 70mm2 spreader plates.
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