Celotex GA4100 100mm PIR Insulation is the most popular Celotex insulation thickness on the market. It is a highly versatile insulation solution, which can be used for many roof, floor, and wall applications. 100mm Celotex Insulation boards are manufactured with a specially designed blowing agent that has a low potential to cause global warming. They also have zero ozone destruction potential (ODP), making them environmentally friendly. 100mm Celotex PIR boards have a low-emissivity aluminium foil facing on either side. This increases their thermal performance in sealed air cavities, producing a superior U Value to other insulation solutions on the market. 100mm Celotex PIR Insulation boards can be transported easily because they are light and portable. This also makes them easier to handle and install. Celotex GA4100 has been certified by the BBA to be suitable for roof, wall, and floor applications provided that it is maintained and used in accordance with its certificate. Celotex GA4100 can be used for your BREEAM assessments as a BRE Green Guide A rated product.