Home Company Products Retailers Documents Contact Product sheet Certificate Mounting Instruction Ce-marking Bison VCL Bison VCL is P-labeled and used on the warm side of the wall or roof structure. Bison VCL is used to seal air and to control the water vapor. Bison VCL works well with Bison House wrap in walls and Bison Permeable Roofing Underlay / Bison Permeable Roofing Underlay 175 for roofs. The VCL is less open to diffusion compared to Bison House Wrap but more permeable than a classic air & vapor barrier. Thereby facilitating it for any construction moisture to dry out / exhale. With Bison VCL you build air tight but open to vapor, so that you do not seal in any moisture. Bison Vapor Control Layer fits all houses where you want a more forgiving design that can breathe. The properties are especially suitable to for example vacation / seasonal housing where the heating occurs periodically. Weight: 120g/m2 Length: 25m & 12,5m (standard) Width: 2,8m (standard) Water vapor resistance: ca 140x10³ s/m, sd-value 4m (Compare to Bison House Wrap: <0,5 m, Bison Permeable Roofing Underlay: 0,11 m) Tear strength: 195 N Elongation: ca 50 % Tensile strength: ca 200 N/5 cm Water tightness: Tight at 200 mm (2kPa) Accessories: Bison Flex Tape, Butyl tape Back to products Vison Byggprodukter AB Poppelgatan 4, 234 35 Lomma Phone: +46-40-413816, info@vison.se

Home Company Products Retailers Documents Contact We welcome inquiries or orders: Name: Company (not required): E-mail: Regarding product: Message: Vison Byggprodukter AB Poppelgatan 4 234 35 Lomma Sweden Phone: +46 (0) 40-413816 Info Törje Svensson Björne Svensson Vison Byggprodukter AB Poppelgatan 4, 234 35 Lomma Phone: +46-40-413816, info@vison.se

Home Company Products Retailers Documents Contact Product sheet Certificate Mounting Instruction Ce-marking Bison Permeable Roofing Underlay Bison Permeable Roofing Underlay is P-marked, breathable and stepping through protected. The product is based on the latest technology: Monolithic. The material is mounted below the surface, on top of the rafters. No air gap to the surface is needed, the membrane is mounted directly on top of the insulation. The Roofing Underlay protects the roof against rain, snow and wind. The material allows internal water vapor to be transported out through the material while it is water and airtight from the outside. The good properties as regards to vapor transport protects against moisture and condensation problems. The roofing underlay has double adhesive edges, which allows a secure sealing at the overlap. The low weight and the large covering area of the rolls makes installation simple and quick. Weight: 235 g/m2 Adhesive edges: 2 Length: 25m & 50m Width: 1,5 m (up to 3 m is possible) Water vapor resistance: 4,3x10³ s/m, sd-value 0,11 m Water tightness: W1 Water column: > 4 m Temperature resistance: - 40° C - + 90° C Tear strength: MD: >250 N, CD: >250 N Elongation: MD: 55%, CD: 60% Tensile strength: MD: 320 N/5 cm, CD: 470 N/5 cm Fire classification: E Accessories: Bison Nail Tape, Butyl tape Back to products Vison Byggprodukter AB Poppelgatan 4, 234 35 Lomma Phone: +46-40-413816, info@vison.se