What testing standard is used to evaluate the performance of air barrier systems?

The evaluation of air barrier systems relies on ASTM E 2357, which is specifically designed to assess the air permeance of exterior building materials and systems. This standard details the procedures for determining the air leakage rate of assemblies that are representative of real-world conditions in building envelopes. By using this testing standard, practitioners can assure that the air barrier systems installed in buildings perform effectively in terms of reducing unwanted air infiltration, which is critical for energy efficiency and overall building comfort.

Other testing standards, while they focus on different aspects of building performance, do not serve the same purpose specifically for air barrier systems as ASTM E 2357 does. For instance, some focus on moisture control or water penetration, making them less suitable for evaluating air barriers directly.