ASTM C1642-20 PDF Download

ASTM C1642-20 is a standard practice that provides guidelines for determining the air leakage rates of aerosol foam sealants and other construction joint fill and insulation materials. The practice mainly focuses on measuring the air flow through materials used to fill joints in building construction.

It should be noted that this practice does not establish all the required criteria for selecting an air barrier assembly. Therefore, the results obtained from this practice should be used for comparison purposes only and should not be considered equivalent to field-installed building systems.

The practice outlines the procedure for preparing the test apparatus and describes the application of aerosol foam sealant and other joint fillers prior to conducting Test Method E283. Testing laboratories can use this practice to quantify the air leakage rate of aerosol foam sealants or joint filling products and report the data in L/(s · m2) according to Practice E29.

It is important to note that this practice is used in conjunction with Test Method E283, which is a laboratory test method primarily used for fenestration products. Individuals interested in conducting field air leakage tests on installed units should refer to Test Method E783 and AAMA 502.

Aerosol foam sealants are commonly used to reduce air leakage in the building envelope, and this practice is also suitable for evaluating insulating materials. It is worth mentioning that there are no other known practices or test methods that specify the preparation of assemblies used to determine the air leakage rate of gap filling sealants, dry preformed foams, or insulations.