Pecora XL-PERM: Air, Vapor & Water Resistive Barrier System

Easy Four Step Solution for an Energy Efficient Wall System

Fully engineered and compatible products that work in tandem to provide complete air, vapor and water barrier protection for your building envelope.

Assured Continuity of Air, Vapor and Water Resistive Barrier Systems
Products can be used together as a system or independently as needed. 

Step 1: Pecora XL-Flash STPU Fast Curing Liquid Flashing /Joint Filler – 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.

Step 2: Pecora XL-Perm ^ULTRA VP Fluid Applied STPU – 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.

Meets performance requirements of NFPA 285 

Step 3: Pecora AVB Silicone Sealant/Adhesive – Designed as an integral component for transition seals between dissimilar materials in air, vapor and water resistive barrier systems, offering superior green strength.

Step 4: Pecora XL-Span 100% Silicone Extruded Transition Membrane – Air and water tight barrier at transitions between building façade components.

Application Manual – English | Spanish

Application Details

Guide Specification  

UL Certification