Even though most of the gaps spilling warm air into your attic are buried under insulation you might be able to find evidence of them.
Seal attic spray foam.
Seal with silicone caulk.
Look for areas where the insulation is darkened.
When we seal the attic with spray foam it s as tight as a butter tub.
A flexible water based one component foam designed to form an interior gasket between framing lumber and drywall to improve air sealing performance.
Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11.
New loctite tite foam dual use pro can window and door 19 6 oz.
We mean that literally by the way.
Nothing unusual about that.
Trim cured foam with serrated blade.
One huge benefit of the spray foam insulated attic is that conditioned air leakage from the ac furnace duct system is contained and used to condition the attic.
Do not use spray foam.
A lot of builders and homeowners are going with spray foam insulation because of the airtightness benefits but then the questioner mentioned that the spray foam contractor had intentionally left big holes to the outside by not sealing the gable vents.
In a vented attic all of that expensive airflow is lost to the environment.
This foam can be placed around light fixtures electrical outlets windows and doors attics and crawl spaces.
Great stuff cans featuring the straw tube applicator will seal shut if left to sit for more than 2 hours after its last use.
Seal the gap between the flue and metal flashing with special high temperature caulk.
Gaps and cracks foam insulating sealant model 157900 2 88 2 88.
Attics with spray foam insulation are so cool.
When you insulate the top of your attic with spray foam you re bringing your attic into your home s envelope.
Spray foam insulation is an insulating air barrier material that works by sealing the walls floors and ceiling cavities from airflow.
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.
If applied outdoors be sure to paint or cover foam to prevent discoloration and uv damage.
Apply self adhesive foam weatherstrip tape to the top edge of the stop.
As a result you can reduce the temperature in your attic by a lot anywhere from 120 degrees to around 95 during peak summer.
Great stuff 12 oz.