Inspect dirty spots in your insulation for air leaks and mold.
How to seal attic air leaks.
Stuff gaps with insulation.
When standing under your attic look at the ceiling and check where your light fixtures and fans are located.
Where do attic air leaks occur.
Cut a piece of plywood to the size of your attic door.
Drop the attic door over the weather.
Never walk on exposed ceiling or insulation as you could potentially fall.
Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.
How to find and seal attic air leaks 1.
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.
Even though insulation may be piled against or stuffed into these spaces they can still leak air.
Start by looking.
Most air leaks can be found around light fixtures plumbing pipes.
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.
Once the fiberglass insulation is in place follow the directions on the can to foam the space around the pipe.
Shake can for 60 seconds.
Install a piece of weather stripping around the access hole in the attic.
Get your supplies together and have a plan.
Invert can and insert it into the gap around the attic hatch.
All you need to do is.
Practice with a dry run.
Again look for signs of dirty insulation to indicate air is moving through.
Install foam gaskets behind outlet and switch plates on walls.
Install the dispenser to the product as per directed on label.
Caulk and seal air leaks where plumbing ducting or electrical wiring comes through walls floors ceilings and soffits over cabinets.
Prep area by removing dust and debris.
With this in mind consider fixing air leaks in your attic as soon as possible to avoid losing your hard earned cash.
Cut a few pieces of foam board insulation the same size and screw them to the plywood with long 4 screws.
Activate can by pulling the trigger.
If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the opening.
Know where common attic air leaks are located.
