Pecora has introduced the XL-Perm Air, Vapor, and Water Barrier System, consisting of fully engineered and compatible products that work in tandem to provide complete protection for your building envelope.
The four-step solution assures continuity of weatherproofing barrier systems. First, Pecora XL-Flash STPU Fast Curing Liquid Flashing and Joint Filler is applied. This is a one-part, fast- curing, trowelable, nonsag elastomeric STPU (silyl-terminated polyurethane) gun-grade sealant specially formulated for the air and vapor barrier industry.
Next, Pecora XL- Perm Ultra VP Fluid Applied STPU is applied in a single coat via airless sprayer or roller. This durable elastomeric weatherproofing membrane provides two to three times the coverage of other fluid-applied products.
XL-Perm Ultra VP has excellent elasticity and crack-bridging capabilities contributing to a seamless, durable and airtight building envelope. It can also be used on damp substrates and green concrete.
Then, the Pecora AVB Silicone Sealant/Adhesive is applied. This is designed as an integral component for transition seals between dissimilar materials in air and vapor barrier systems, offering superior green strength.
Finally, the Pecora XL-Span 100 percent silicone extruded transition membrane provides an air- and water-tight barrier at transitions between building facade components.
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