ASTM E783

The ASTM E 783 - 02 - Standard Test Method for Field Measurement of Air Leakage Through Installed Exterior Windows and Doors is a testing standard that describes the procedures to determine air leakage rates of installed windows and doors.

This testing standard is most often specified to determine the air leakage of newly installed windows and doors. It is intended to measure air leakage associated with the assembly and not the leakage through the openings and adjacent construction. The testing can be adapted for use to correlate potential paths of leakage from within the installed openings. This is helpful to identify air infiltrations so they can be controlled or eliminated.

The testing is performed by sealing a chamber to the interior or exterior face of the test specimen, supplying or exhausting air from the chamber at a rate required to maintain the specified test pressure, measuring the air flow lost (or gained) across the testing chamber. Extraneous air must also be documented to ensure proper measurement of leakage from the test specimen. The acceptable flow rate (air loss) is determined by subtracting the flow rate required to maintain constant pressure to the amount of extraneous air leakage. Acceptable rates of airflow are determined by the project specifier.

The AAMA 502 Voluntary Specification for Field Testing of Newly Installed Fenestration Products refers to the ASTM E 783 for the air infiltration portion of new construction quality assurance testing.

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