Filling Air Gaps In Attic

Gaps in the attic or between the lower floors and the attic will let heated or cooled air escape to the great unconditioned outdoors making any insulation you add essentially useless.

Filling air gaps in attic. He s told us that the gaps are required to prevent condensation or any adverse impact to the timber within. While most of the air leaks in your attic are probably covered up by insulation. Look for areas where the insulation is darkened. The number one prep step.

Even though most of the gaps spilling warm air into your attic are buried in insulation you ll still see evidence of the escaping air. If the space around your plumbing pipe is wider than 3 inches you may need to stuff some fiberglass insulation into the space to serve as a backer for the expanding foam. Even though most of the gaps spilling warm air into your attic are buried under insulation you might be able to find evidence of these gaps. This is the result of filtering dusty air from the house.

Once the fiberglass insulation is in place follow the directions on the can to foam the space around the pipe. Use inside or out to fill gaps and cracks around plumbing lines and rim joists in attics and basements and more. Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots. The current vendor of the house claims that the reason for the gaps in the roofing visible from inside the atic is that it is a breathing roof.

Once you have finished sealing all of the leaks in your attic the next step is to weatherstrip. While in your attic look for areas where the insulation is darkened see photo a result of filtering dusty air from the house. Foam or caulk small gaps in your attic. Great stuff gaps cracks insulating foam sealant is a ready to use minimal expansion insulating foam sealant that expands up to 1 inch to take the shape of gaps creating a long lasting airtight and water resistant seal around plumbing and electrical in basements attics and more.

Stuff gaps with insulation.