PACK OF 10 (Total 10 Units) - Multifoil Roof / Loft Insulating Vapour Barrier 10m x 1.2m - This Multifoil Insulating Vapour Barrier 10 x 1200m x 30mm (L x W x T) Silver is a thin, flexible reflective insulation that prevents condensation by stopping moisture entering the roof voids from the inside of the building. Installed to the underside of rafters and across joists, its also certified for use in timber frame and solid masonry walls. Key Features - Prevents condensation and vapour from entering the roof structure Can be fitted below any depth rafter to improve thermal performance Lightweight and flexible for quick and easy installationReduces the depth of stud needed in new builds BBA certified to internally insulate new timber frame or existing masonry walls