How To Seal Attic Air Leaks

Cut a piece of plywood to the size of your attic door.

How to seal attic air leaks.

Again look for signs of dirty insulation to indicate air is moving through. Shake can for 60 seconds. All you need to do is. If you have a finished attic seal behind the kneewalls finished rooms built into attics often have open cavities in the floor framing under the side walls or kneewalls.

Usually air leaks occur in these spaces. With this in mind consider fixing air leaks in your attic as soon as possible to avoid losing your hard earned cash. Inspect dirty spots in your insulation for air leaks and mold. Activate can by pulling the trigger.

Install a piece of weather stripping around the access hole in the attic. Invert can and insert it into the gap around the attic hatch. Prep area by removing dust and debris. Install foam gaskets behind outlet and switch plates on walls.

Know where common attic air leaks are located. Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. Even though insulation may be piled against or stuffed into these spaces they can still leak air. Caulk and seal air leaks where plumbing ducting or electrical wiring comes through walls floors ceilings and soffits over cabinets.

If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening. Get your supplies together and have a plan. Where do attic air leaks occur. Practice with a dry run.

Install the dispenser to the product as per directed on label. Cut a few pieces of foam board insulation the same size and screw them to the plywood with long 4 screws. 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. Stuff gaps with insulation.

Most air leaks can be found around light fixtures plumbing pipes. When standing under your attic look at the ceiling and check where your light fixtures and fans are located. 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. Once the fiberglass insulation is in place follow the directions on the can to foam the space around the pipe.

Step by step directions. Drop the attic door over the weather.