Our Sd2 reinforced laminate VCL Vapour Control Layers (VCLs) are used to manage the transition through the building envelope of naturally occurring moisture vapour, which is produced by general building use. Our range of VCL membranes is formulated with a wide variety of construction designs in mind, delivering specific solutions for various applications and requirements. Novia VC2 is a technologically advanced and reinforced air-tight vapour check membrane with a Sd value engineered specifically for use in insulated wall, roof and floor applications in timber-framed dwellings. This product performs the additional function of an air-leakage barrier, to prevent losses due to unwanted convection flows. We advise the use of Novia compatible butyl and foil sealing tapes to ensure complete barrier integrity throughout the entire life of the product. Novia VC2 should be used in combination with Novia breather membranes to provide an air-tight and vapour resistant system. This product is CE Approved and CPR compliant.