WestCon Tribune

June 2007

Advancements in

Barrier Technology

Presented By: Scott Tyson, W.R. Grace Construction Products

Senior Sales Representative for Commercial Waterproofing Products

The June meeting will feature Scott Tyson with W.R. Grace Construction Products. Mr. Tyson will be discussing the advancements in barrier technology including the Perm-A-Barrier‰ VP wall assembly product carried by the W.R. Grace company.

Perm-A-Barrier VP is a fluid applied, one component, acrylic membrane that cures to form a resilient, monolithic, fully bonded elastomeric sheet when applied to construction surfaces.

Perm-A-Barrier VP provides 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. It is vapor permeable for wall assemblies requiring this "breathable" characteristic. As a vapor permeable membrane, Perm-A-Barrier VP 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.

Perm-A-Barrier Advantages

• Air tight – protects against air passage and associated energy losses
• Vapor permeable – prevents moisture from being trapped in wall cavity
• Single component – fast and easy application
• Fully Bonded – transmits wind loads directly to the substrate
• Seamless
• Primerless – applied directly to substrate -minimal surface preparation
• Damp surface tolerant
• Versatile – easy to use at details
• UV Resistant
• Strong adhesion

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