How To Air Seal Attic Reddit

I can t exactly put a piece of ply wood over the joists because the a cross beams are in the way.

How to air seal attic reddit.

Don t forget to check behind attic kneewalls. Use expandable foam spray for any gaps and cavities larger than inch but no larger than 3 inches. Also it appears the previous owner just piled a bunch of fiber glass insulation in one part of the attic over the master bedroom. Better yet there are high quality products such as the attic gator designed to both seal and insulate attic access doors and scuttle holes.

I m trying to air seal this entire thing. Use caulk to seal air leaks around plumbing ducting and electrical wiring. 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.

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. Install foam gaskets behind outlet and switch plates.