Celotex insulation are market leaders in high performance PIR (polyisocyanurate) insulation boards. They have a huge range of insulation boards ready for use as; Floor insulation, Wall insulation, Pitched and flat roof insulation. Celotex insulation boards can be used for a variety of applications and include; GA4000 suitable for roof, floor and wall insulation, XR4000 suitable floor insulation. PL4000 are thermal laminated boards suitable only for wall and pitched roof loft conversions. CW4000 is suitable for partial fill cavity wall insulation and TB4000 is best suited for soffit, window reveal, and timber frame wall lining.