Air Leakage Control

Air leakage is a major source of heating load, but controlling air leakage is important for other reasons as well. Certain types of uncontrolled leakage result in moisture deposits in the building envelope. For example, when warm, moisture-laden air works its way out through the wall system, the moisture condenses on the cold outer wall panels, providing an opportunity for mold and mildew to grow, degrading insulation performance, and even causing structural damage. Air leakage can also contribute to occupant discomfort in perimeter spaces.

Understanding the basics
Mitigating air leakage
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