25m., For refurbishment or new build., Thermal Resistance up to 1.455m sq/k W, Suitable for dry lining & cavity walls., Suitable for Walls, Roofs & Under Suspended Floors, Typically Used for New Builds, Refurbishment & to Insulate Behind Dry Lining, Meets current building regulations when installed in accordance with the manufacturers instructions., Lightweight, Time-Saving, Equivalent to 55mm Polystyrene