GCP (GCP) PERM-A-BARRIER®  VPL 50RS UV STABLE Membrane is a fluid applied, one component, STPE (Silyl Terminated Polyether) vapor permeable air and water barrier. When applied to approved construction surfaces, PERM-A-BARRIER®  VPL 50RS UV STABLE is designed to cure and form a resilient, monolithic, fully bonded elastomeric membrane, and to create a continuous barrier against air infiltration and exfiltration, reducing associated energy loss and condensation problems.

PERM-A-BARRIER®  VPL 50RS UV STABLE Membrane is specifically designed to provide superior protection against the damaging effects of air and liquid water ingress on the building envelope. Vapor permeability allows the wall to breathe and dry, minimizing the risk of water vapor from being trapped and condensing within the wall. While PERM-A-BARRIER®  VPL 50RS UV STABLE Membrane is vapor permeable, it is impermeable to liquid water, allowing the material to act as a water drainage plane within the wall.

Features

• Permanently UV stable behind maximum 1 in.(25 mm) wide open joint rainscreen system; provides design flexibility
• Can be exposed for up to 12 months during construction
• Early wash-off resistance
• Can be applied to damp-to-touch surfaces that are free of liquid water 
• Sprayer friendly formula requiring light spray equipment 
• Can be spray-, roller- or brush-applied
• Fire resistant – meets NFPA 285 as part of various wall assemblies with and without foam plastic insulation 
• VOC Content, 32 g/L (calculated)
• Formulated without phthalates and halogens
• Designed to protect against air passage and associated energy losses - meets ASTM E2357 standard
• Vapor permeable. Minimizes moisture from being permanently trapped in the wall cavity by allowing the wall’s ability to “breathe” and dry
• Single component. Fast and easy application with simple roller or spray equipment
• Fully bonded - transmits wind loads directly to the substrate, and prevents water migration between the barrier and substrate 
• Seamless continuous membrane integrity with no laps
• Adheres to properly prepared clean common construction substrates such as wood, block, concrete, OSB, and gypsum sheathing

5 gallon pail