The Celotex Thermaclass Cavity Wall 21 Board 1190 x 450 x 140mm (L x W x T) is an easy to install polyisocyanurate (PIR) insulation board that has a high thermal performance with a thermal conductivity of 0.021 W/m.K. Suitable for full fill cavity wall applications, it can be installed with up to a 10mm residual cavity or as a full fill solution with no residual cavity. The board has a low emissivity foil facing to each side and features an engineered tongue and groove joint profile, helping to ensure a continuous layer of insulation to maximise thermal performance as well as providing protection from wind driven rain.
Features & benefits
- Lightweight
- Tongue and groove edge profile
- Low emissivity foil facing
- BBA approved – certificate 16/5343 (Full Fill Cavity Walls)
- Reaction to Fire: Euroclass E Reaction to Fire classification, according to EN 13501-1
