Celotex GA4000 is a rigid thermal insulation board made of polyisocyanurate (PIR) foam. The boards are provided on both sides with a low emissivity aluminium composite foil facing. |Celotex GA4000 is mainly used as thermal insulation in roof, wall and floor applications.|BBA Certificates: 25/7318 and 25/7329|Lambda: 0.022 W/m.K