The Celotex Thermaclass Cavity Wall 21 Board is a top-tier insulation solution designed to minimise heat loss in cavity walls. With measurements of 1190 x 450 x 90mm, this robust board is crafted from PIR (polyisocyanurate) foam, a material known for its exceptional thermal performance. Its encased in a foil facing to further enhance its insulating properties. Whether youre working on new build or refurbishment projects, this product offers efficient thermal insulation that complies with UK building regulations.
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