XL-Perm Air, Vapor and Water Barrier System

Words: Dan KamysPecora’s XL-Perm Air, Vapor and Water Barrier System consists of products that work together to provide complete protection for a building envelope.

The four-step solution promotes continuity of weatherproofing barrier systems.

Step 1: Pecora XL-Flash STPU Fast Curing Liquid Flashing and Joint Filler
A 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 elastomeric weatherproofing membrane provides two- to three-times the coverage of other fluid applied products. XL- Perm ULTRA VP has elasticity and crack-bridging capabilities contributing to a seamless, durable and airtight building envelope. It also can be used on damp substrates and green concrete.

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

Step 4: Pecora XL-Span 100% Silicone Extruded Transition Membrane
Airtight and watertight barrier at transitions between building façade components.

All the products in the Pecora XL Perm system, when used together according to manufacturer's guidelines, achieve 100 percent compatibility, wet or dry. Complete system testing was done using an assortment of air, vapor and water barrier materials to ensure quality. Now available, Pecora XL-Perm is a professional system that must be used in conformity with manufacturer's instructions.

For more information, visit pecora.com.
 0
Why Belden Brick Has Lasted 140 Years
August 2025

‘Why We’ve Lasted 140 Years’ How The Belden Brick Company’s approach to manufacturing excellence continues to solve modern brick masonry challenges Ask masonry contractor Jason Hauer what separates good brick from great brick, and he’ll tell you about h

MAP Partner
Read More
Achieving Consistent Mortar Mixes: Key to Successful Masonry Projects
August 2025

Consistency is the cornerstone of quality masonry. A uniform mortar mix is critical for the structural integrity and durability of any project, from a simple brick wall to an intricate stone design. When mortar lacks consistency, it can lead to weak joint

MAP Partner
Read More
What’s In Your Data Backup Strategy?
August 2025

Your business handles plenty of critical data, and losing it could result in operational downtime, financial losses, and a damaged reputation. For businesses owners, a robust data backup strategy can help you stay resilient and competitive in the fuel mar

Safety Library
Read More
Facial Recognition for Masonry Companies
August 2025

Masonry companies face a unique set of challenges. Managing a mobile workforce across multiple job sites requires precision and accountability. CrewTracks recognizes this need and has introduced an innovative facial recognition feature designed to streaml

MAP Partner
Read More