140mm Celotex XR4140 Insulation Board 2.4m x 1.2m checklist-Estimated Delivery Time Of 2-3 Working Days it helps control air leakage

it helps control air leakage and improves energy efficiency

Crafted from non-combustible glass mineral wool

Reduced energy consumption

Do these slabs come in different densities

140mm Celotex XR4140 Insulation Board 2.4m x 1.2m checklist-Estimated Delivery Time Of 2-3 Working Days it helps control air leakageCelotex XR4000 is best used in cut to fit applications when adding insulation between rafters or joists. This insulation board is recommended as it obtains lower U values with only a single layer of insulation. Thanks to its low emissivity foil facings, Celotex delivers enhanced thermal insulation performance within cavity air spaces and it features a heat conductivity of 0. 022W mK to provide more reliable insulation. The XR4000 is multifunctional,