Can I Use Polystyrene For Wall Insulation. As an insulator, it can withstand extremes in temperature and is also a noise reducer. Extruded polystyrene (xps) is made from a polystyrene polymer using an 'extrusion' technique and is used as thermal insulation.
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The plasticisers used to make the pvc insulation on the cables flexible reacts with the polystyrene resulting in the polystyrene appearing to 'melt' and the plasticiser migrates out of the cable making it. Reduction in overall wall thickness, as mineral wool can be used to ll the cavity, whereas a 50mm cavity is still. Superhomer john doggart explains how polystyrene external wall insulation was a cost effective option for increasing the comfort of his victorian home in. Polystyrene insulation is a kind of foam insulation that is used in both residential and commercial settings.