Celotex’s insulation is not affected by moisture

Insulation manufacturer Celotex has added a high performance PIR (polyisocyanurate) insulation product to its range. Called FR5000, the firm claims the product has achieved a 0.021 W/mK lambda value together with a BRE Green Guide rating of A+. The foil faced (PIR) FR5000 board also offers a class-O fire rating. The firm says FR5000 is not affected by moisture and has been developed for use in pitched roofs, floors and walls.