True or False: Air sealing is not important as air does not carry moisture.

Air sealing is an essential practice in building performance, particularly related to controlling moisture. While it might seem that air does not carry moisture, the reality is that air movement is a significant factor in moisture problems within buildings. Air can indeed transport moisture vapor, and without effective air sealing, unwanted air leaks can introduce humid air into the attic or living spaces.

Proper air sealing helps to minimize these leaks, which in turn reduces the risk of condensation forming on cold surfaces, mold growth, and overall energy loss. When moist air enters an inadequately sealed space, it can lead to various issues, including structural damage and decreased indoor air quality. Therefore, emphasizing the importance of air sealing is crucial for maintaining healthy and efficient building environments.