Celotex GA4050 50mm PIR Insulation is suitable for many floor, wall, and roof applications. 50mm Celotex Insulation boards have zero ozone depletion (ODP), as they contain an eco-friendly blowing agent that has a low potential to cause global warming. These 50mm Celotex PIR boards feature a low-emissivity foil face that improves thermal performance in sealed cavity air spaces, improving the U value. 50mm Celotex PIR Insulation boards are lightweight and can be easily transported. They can also be fitted and used as-is. The BBA has certified Celotex GA4050 to be suitable for roof, wall and floor applications provided it is used and maintained in accordance with the certificate. Celotex GA4050 is a BRE Green Guide A rated product that can be used in your BREEAM assessments to show environmental performance.