The Celotex insulation boards are 50mm thick, measuring 2400mm x 1200mm, and coated with foil. Made from rigid polyisocyanate material, these insulation boards are faced and suitable for various applications such as exterior walls, floors, garages, interior walls, basements, ceilings, underfloors, attics or lofts, cold rooms, and underfloors. With a coverage area of 32 ft² (2.97 m²) and a length of 8 ft (2.44 m), these silver-coloured boards provide insulation in a convenient sheet packaging. Ideal for both residential and commercial use, Celotex insulation boards offer a reliable solution for maintaining temperature control in buildings.