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    ASTM E2178 - 21a

    Standard Test Method for Determining Air Leakage Rate and Calculation of Air Permeance of Building Materials

    Active Standard ASTM E2178 | Developed by Subcommittee: E06.41

    Book of Standards Volume: 04.12


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    Significance and Use

    4.1 The purpose of this test is to calculate an assigned air permeance of flexible sheet or rigid panel-type materials at a reference air pressure differential of 75 Pa. The results may be useful in determining suitability of that material as a component of an air retarder system.

    4.2 This method does not address the installed air leakage performance of building materials. The installed performance of air retarder materials and air retarder systems is addressed in Specification E1677, Test Method D8052/D8052M, and Test Method E2357.

    1. Scope

    1.1 This test method is to determine the air leakage rate of building materials at various pressure differentials with the intent of calculating an assigned air permeance rate of the material at the reference pressure difference (ΔP) of 75 Pa.

    1.2 The method is intended to assess flexible sheet or rigid panel-type materials using a 1 m × 1 m specimen size.

    1.3 The values stated in SI units are to be regarded as standard. No other units of measurements are included in this standard.

    1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.

    1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D8052/D8052M Test Method for Quantification of Air Leakage in Low-Sloped Membrane Roof Assemblies

    E283/E283M Test Method for Determining Rate of Air Leakage Through Exterior Windows, Skylights, Curtain Walls, and Doors Under Specified Pressure Differences Across the Specimen

    E631 Terminology of Building Constructions

    E1677 Specification for Air Barrier (AB) Material or Assemblies for Low-Rise Framed Building Walls

    E2357 Test Method for Determining Air Leakage Rate of Air Barrier Assemblies


    ICS Code

    ICS Number Code 91.100.01 (Construction materials)

    UNSPSC Code

    UNSPSC Code 30130000(Structural building products)


    Referencing This Standard
    Link Here
    Link to Active (This link will always route to the current Active version of the standard.)

    DOI: 10.1520/E2178-21A

    Citation Format

    ASTM E2178-21a, Standard Test Method for Determining Air Leakage Rate and Calculation of Air Permeance of Building Materials, ASTM International, West Conshohocken, PA, 2021, www.astm.org

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