Air Sealing

Air sealing closes up the leaks in a house and keeps heated and cooled air from escaping to the outdoors. This lesson shows why air sealing is an important task and why air sealing in the attic is especially important.

In this lesson, you will learn why air sealing is important , how to recognize when to use caulk and when to use foam, explain why most air sealing takes place in the attic of a house, how to identify different kinds of leaks in an attic and to demonstrate techniques for closing up leaks in an attic using expanding foam, caulk, and rigid insulation board.

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