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This glossary is intended to provide standardized terms and definitions for the air and water-restive barrier industry and associated systems, assemblies, sub-assemblies, accessories, materials, and products.

This glossary provides a vocabulary of terms used in the field of the air and water-restive barrier industry along with related industries that covers materials, products, accessories, components, sub-assemblies, assemblies, systems, installation, and applications. Some of the terms can have a different meaning when used in other industries or applications.

The purpose of this terminology is to provide meanings and explanations of technical terms in the buildings field, written for both the non-expert and the expert user.

Terms are listed in alphabetical sequence. Compound terms appear in the natural spoken order.

Download the Standard for Air Barrier and Water-Restive Barrier Terminology document.