Which standard outlines the requirements for air barriers in buildings?

The standard that specifically outlines the requirements for air barriers in buildings is ASTM E 2178. This standard focuses on the testing methods for determining the air permeability of building materials and ensures that air barriers perform effectively in resisting air movement through building envelopes. By establishing clear criteria for material performance, ASTM E 2178 helps ensure that buildings maintain energy efficiency and indoor air quality by minimizing unwanted air infiltration and exfiltration.

The other options, while related to various aspects of air and moisture movement in building envelopes, focus on different testing methods or performance criteria. For instance, ASTM E 783 is concerned with field testing for air leakage, ASTM E 2357 addresses the performance of air barrier assemblies, and ASTM E 1105 deals with water penetration testing. These standards play important roles but do not solely define the comprehensive requirements for air barriers as ASTM E 2178 does.