If that s an issue clean the wall with a mild masonry stain remover or.
How to seal a drafty brick attic.
These door sweeps will seal off the door and prevent air from leaking out of your home.
You can spray expanding foam between the drywall and framing.
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.
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.
Cellulose filled the cavity between the framing and the plaster interior walls.
Finally watch out for can ceiling lighting which can be another well disguised source of big drafts.
Start by placing door sweeps on the bottom of every door that leads outside.
The attic can also be a major source of air leaks.
Tips any stains that remain on the brick or mortar once the loose material is removed will likely darken after sealing.
Then jeff filled those gaps with 2 1 2 inches of foam it green spray foam insulation.
Do the same around the top plates of interior walls underneath the attic floor.
If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening.
Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.
Seal big gaps around such receptacles with a quick application of handy expandable foam like great stuff.