Pecora introduces 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 unique one-part, fast-curing, non-sag elastomeric STPU gun grade, trowelable liquid flashing and joint 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% Silicone Extruded Transition Membrane provides an air- and water-tight barrier at transitions between building facade components.