Visqueen A2 Vapour Barrier is a multi-layer reinforced aluminium AVCL (air and vapour control layer). The product has a reflective aluminium finish on the upper surface and a matt aluminium surface on the reverse. The barrier is supplied in single wound rolls (not folded), 1.2m x 50m long.Features & benefits

• Achieves a reaction to fire classification A2 - s1, d0 to BS EN 13501-1:2018 - compliant with UK Building Regulations
• Versatile application - used within floor, wall and roof constructions
• Single wound - rapid installation

Usage

• Visqueen A2 Vapour Barrier is used in buildings where an air and vapour control layer (AVCL) is required that achieves a reaction to fre classifcation A2 - s1, d0 to BS EN 13501-1:2018. The barrier is used to reduce the risk of interstitial condensation occurring within the structure as well as improving the airtightness of the building.
• The barrier restricts the passage of warm, moist air within the building from permeating into the foor, wall or roof structure. The barrier is designed to be installed to the warm side of foors, walls and roofs and is suitable for humidity classes 1, 2, 3, 4 and 5 to BS 5250:2021.
• For conformity with the reaction to fre classifcation, usage of Visqueen FR+ Vapour Tape must not exceed 10% of the area of the Visqueen A2 Vapour Barrier. Contact Visqueen Technical Services for guidance prior to the specifcation or use of any other tapes with this barrier other than that shown in the system components section of this datasheet.
• Care should be taken by the Designer to ensure suitability for applications other than those stated above. Visqueen A2 Vapour Barrier should be approved by all stakeholders prior to use.