How To Seal A Drafty Attic

The attic can also be a major source of air leaks.

How to seal a drafty attic.

Weatherstrips are an inexpensive way to help seal drafty doors and windows. You can spray expanding foam between the drywall and framing. Insulating the attic is the best way to seal these leaks. Paintable latex caulk is a great choice to help seal drafts around window or door trim whether indoors and out.

Insulate the drafty attic properly in some cases your attic may be drafty from poor insulation. Simply add filler insulation on top of the existing layer of insulation to seal any drafts. Seal the wall plate where the top of walls meets the floor ceiling joists in the attic to ensure air does not leak at the outer edges of your attic roof. Even if your home was built with proper insulation it degrades over time so it s essential you replace the insulation as needed.

By recognizing the drawbacks of a poorly sealed thermal envelope being able to recognize leaks and knowing how to close them you will experience greater comfort health and efficiency in. For super drafty windows you can seal an especially leaky window shut for the season with dap seal n peel a caulk is designed to be easily removed when warmer weather arrives. When you re done sealing your attic bypasses push the insulation back into place with an old broom handle or stick as you back out of the attic. Do the same around the top plates of interior walls underneath the attic floor.

You can do this with expanding foam sealant. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening.