Ventilate the attic 1 sqft per 300 sqft of attic floor space balance at ridge and soffit areas.
Air sealing attic edges.
Drywall clips support the edge of these pieces of drywall when they did not land on a truss.
If your hatch rests directly on the moldings like ours did add 2 1 2 in wide stops around the.
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Before the last drywall sheet was hung i went up in the attic and used spray foam to air seal all of the edges of the drywall to the top plates of the walls as well as all the seams between the sheets and around electrical gang boxes.
Before i add insulation i seal the attic.
When the soffit contractor s workers got the first part of the soffit opened up i missed some of the sealing.
Then carefully seal the edges and seams with acoustical sealant.
And then seal the edges with foam sealant.
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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 products that work.
Conscientiously air sealing the attic ceiling after the drywall is hung before insulation makes getting to 3 ach50 much easier.
There are a lot of holes gaps and cracks that leak a lot of air.
Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.
Proper sealing is difficult but adding compressible self stick foam tape along the upper edges of the plywood door will help reduce air leakage.
Sealing the ceiling so the attic insulation can work.
To keep the attic vented and get the top plate sealed and insulated from outside would be important but tricky.
Proper sealing is difficult but adding compressible self stick foam tape along the upper edges of the plywood door will help reduce air leakage.
Some holes are apparent like attic hatches or folding attic steps.
I m interested to hear what others have done in that situation.
Understanding the air barrier.
It ensures a colder well vented attic space less prone to the formation of ice dams at the eaves.
Air seal your attic for energy savings.
Most people just add insulation to their attic this will not stop the escaping warm air.
After air sealing attic ventilation is your second line of defence against the water vapour that may have found its way into the attic.
In the summer and winter your home s conditioned or heated air will leak out through gaps in your home s sealing.