Thermaclass Cavity Wall 21 Board 1190x450x90mm 3.21m2 pack

Celotex Thermaclass Cavity Wall 21 Boards are an easy to install PIR board with high thermal conductivity performance. Suitable for full fill cavity wall applications, they can be installed as a full fill solution with no cavity or up to 10mm residual cavity. Low emissivity foil facing to each side ensures a continuous layer of insulation to maximise thermal performance as well as protection from wind driven rain.