Celotex XR4130 130mm PIR Insulation is suitable for a variety of floor, wall and roof applications. Celotex is the most popular brand of thermal insulation in the UK. 130mm Celotex Insulation boards are comprised of a rigid polyisocyanurate (PIR) base with aluminum foil facings. These 130mm Celotex Insulation Boards are among the most efficient insulation products available. Their thermal conductivity is 0.022 W/mK. 130mm Celotex XR4130 PIR Insulation uses an eco-friendly blowing agent and has demonstrated low global warming potential and zero ozone depletion potential (ODP). As long as it is stored and used in accordance with the certificate, Celotex XR4130 is certified by the BBA to be used for roof, wall, and floor applications.