Air Seal The Attic Floor

The number one prep step.

Air seal the attic floor.

Air seal your attic for energy savings. To get a better air seal. Image 1 of 4 intello is a membrane is a smart vapor retarder with a permeance that ranges from 13 2 perms to less than 0 13 perm. Spray foam insulation is an incomplete name.

Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. The attic is usually where you can find some of the largest opportunities to save energy in your home. Combined with attic insulation air sealing can help to alleviate the formation of dangerous ice dams in the winter. It really should be called spray foam insulation and air barrier.

Find a diagram of common air leaks here here s a quick primer on fixing draft prone spots. 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. By eric whetzel december 5 2017. If your attic floor is insulated with vermiculite a type of insulation that may contain asbestos don t touch the insulation.

A properly done spray foam job not only insulates but also greatly reduces the air leakage of. If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the. It made a lighter easier to. If you have ducts that aren t sealed you are probably leaking a lot of conditioned air into your attic space.

Sealing duct leaks can improve the efficiency of your hvac system by around 20. While you are in the attic sealing air leaks look for any ductwork that may be up there. By air sealing in your attic you can stop many major air leaks and help to maintain the desired temperature throughout your home. Without air sealing your attic you are allowing warm air to escape from your home carrying with it your hard earned winter heating money.

Air sealing the attic floor after considering zip sheathing for the ceiling air barrier we settled on the intello membrane instead. Once you deal with the air up there this problem goes away with or without the insulation in the attic floor. Most people just add insulation to their attic this will not stop the escaping warm air. Don t attempt any air sealing work in an attic insulated with vermiculite.