Impact of Air Leakage on the Thermal and Moisture Performance of the Building Envelope

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The air tightness of building envelopes systems is critical to the performance of a building. Uncontrolled airflow movements can cause moisture-induced damage by transporting large amounts of moisture, and may also impact occupant health and safety, sound control, fire control and energy efficiency. Building envelopes are often designed to control airflow by providing a resistance to the bulk flow. Implementation of air barrier systems to restrict airflow is commonly used to reduce the quantity of airflow movement between the exterior and interior environments through the wall. This paper presents a preliminary assessment of the influence of airflow on the moisture ... continued below

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Karagiozis, A August 15, 2001.

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The air tightness of building envelopes systems is critical to the performance of a building. Uncontrolled airflow movements can cause moisture-induced damage by transporting large amounts of moisture, and may also impact occupant health and safety, sound control, fire control and energy efficiency. Building envelopes are often designed to control airflow by providing a resistance to the bulk flow. Implementation of air barrier systems to restrict airflow is commonly used to reduce the quantity of airflow movement between the exterior and interior environments through the wall. This paper presents a preliminary assessment of the influence of airflow on the moisture performance of a residential building envelope system. The combined heat, air and moisture (hygrothermal) transport in a selected wall is numerically investigated. Vapor diffusion, liquid transport and temperature dependent sorption isotherms are included in the investigation.

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  • Air Barriers III: Air Barrier Solutions for Buildings in North American Climates, Washington, DC (US), 06/05/2001

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  • Report No.: P01-111606
  • Grant Number: AC05-00OR22725
  • Office of Scientific & Technical Information Report Number: 788642
  • Archival Resource Key: ark:/67531/metadc724198

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Office of Scientific & Technical Information Technical Reports

Reports, articles and other documents harvested from the Office of Scientific and Technical Information.

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  • August 15, 2001

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  • Sept. 29, 2015, 5:31 a.m.

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  • March 25, 2016, 11:06 a.m.

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Karagiozis, A. Impact of Air Leakage on the Thermal and Moisture Performance of the Building Envelope, article, August 15, 2001; Tennessee. (digital.library.unt.edu/ark:/67531/metadc724198/: accessed August 21, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.