For those working in building and renovation, knowing what is celotex made of helps you choose the right insulation board. Celotex uses PIR foam core and foil facings, which combine to provide thermal efficiency, water resistance, and versatility for roofs, walls, or floors. The College of Contract Management supports learning of these material fundamentals to boost your skills and em... https://www.uniccm.com/blog/celotex-what-is-it-uses-benefits-applications-in-insulation