Novia has assembled this Novia 500 Gauge VCL 135m² kit to provide you with all the necessary materials and fittings for a durable and high-performing vapour control layer. The Novia 500 VCL within the kit serves as both a vapour control layer and an air barrier for timber framed walls while the inclusion of Novia double-sided butyl tape and Novia foil tape ensures a secure seal, enhancing longevity. Crafted from blown polyethylene measuring 125 microns in thickness, the Novia 500 VCL is lightweight and compatible with other Novia breather membranes, allowing for an airtight and vapour-resistant system when used together.