ASTM E783: Determining Air Leakage Rates of Installed Exterior Windows and Doors
The purpose of the ASTM E783 field measurement test is to determine the leakage associated with the assembly and not the opening between the assemblies. The method is used to create natural environmental conditions that induce air leakage. During the actual test, a chamber is sealed over the interior or exterior face of a testing specimen. The chamber supplies air to or exhausts air at a rate required to maintain test pressure. As the pressure is adjusted, the airflow across the test specimen is recorded.