A CFC/ HCFC free, rigid polyisocyanurate (PIR) thermoset closed cell foam core between low emissivity foil facings with engineered high impact polystyrene (HIP) outer skin.
Designed for fixing to the cavity face of the inner leaf, in all exposure zones, for buildings up to and including 25 metres in height.
Standard product features
1200 x 450 mm.
HIP facing has angled projections which provide a drainage channel to the outer leaf of the cavity.
Thermal conductivity (lambda value):
Xtratherm PIR achieves an A+ rating in the BRE Green Guide.
The nominal thickness includes the 5 mm profiled facing.