PERM-A-BARRIER® VPL is a fluid applied, one component, acrylic membrane that cures to form a resilient, monolithic, fully bonded elastomeric sheet when applied to construction surfaces. For application at temperatures between 20 °F (-7°C) and rising to 60 °F (16°C). Please use PERM-A-BARRIER® VPL LT. (Please a different datasheet)

PERM-A-BARRIER® VPL membrane provides superior protection against the damaging effects of air and liquid water ingress on building structures. The product creates a solid barrier against air infiltration and exfiltration, which minimizes associated energy loss and condensation problems.

PERM-A-BARRIER® VPL membrane is vapor permeable for wall assemblies requiring this “breathable” characteristic. As a vapor permeable membrane, it permits the transfusion of water vapor that may otherwise condense in the wall structure; but is impermeable to liquid water, which allows the material to act as a water drainage plain. 

The Volatile Organic Compound (VOC) content of PERM-A-BARRIER® VPL membrane is less than 30 g/L.

Features

• Fire resistant - meets NFPA 285 as part of various wall assemblies with foam plastic insulation
• Plasticizer, Phthalate and Halogen-free - safe and environmentally-friendly
• Air tight - protects against air passage and associated energy losses. Meets new ASTM E2357 standard
• Vapor permeable - prevents moisture from being trapped in the wall cavity by allowing walls the ability to dry
• Single component - fast and easy application with simple spray equipment
• Fully bonded - transmits wind loads directly to the substrate
• Seamless - continuous membrane integrity with no laps
• Damp surface tolerant - can be applied to damp-totouch surfaces
• Strong adhesion to common construction substrates such as wood, block, concrete, OSB, gypsum sheathing and metal
• Compatible with PERM-A-BARRIER® Flashing Systems

5 gallon pail