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Glossary

Air Control Layer Material (formerly Air Barrier Material)

A material that has sufficiently low air permeance and adequate strength that it can be part of an air control layer system. Recommended maximum air permeance for a material is 0.02 l/(s-m2)@ 75 Pa (0.004 cfm/ft2 @ 0.3” WC) when tested according to ASTM E 2178 or E 283.

Related terms: Air Control Layer System

Related resources: BSI-024: Vocabulary, Info-500: Building Materials Property Table