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    Energy Conservation with Air Infiltration Barriers

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    The infiltration of air into insulated walls reduces the effectiveness of the insulation and increases the rate of heat loss. The obvious solution to this problem is to build “air-tight” walls. An air infiltration barrier can be installed during construction to effectively provide an “air-tight” envelope. A unique nonwoven fabric that has excellent breathability can be used for this application without causing excess moisture build-up or condensation in the wall cavity. Laboratory results showing energy savings that may be achieved by installing air infiltration barriers are presented for both mobile home and site-built home wall constructions. Energy savings for an air infiltration barrier installed on attic floors are shown, including the results of a 50-home field test.


    air infiltration barrier, air leakage, thermal performance, energy conservation, building heat loss, nonwoven fabric

    Author Information:

    Henning, GN
    Senior Research Chemist, E. I. Du Pont de Nemours and Company, Textile Fibers Department, Spunbonded Products Division, Wilmington, Del.

    Committee/Subcommittee: C16.16

    DOI: 10.1520/STP29470S