My Attic Is Tightly Sealed

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.

My attic is tightly sealed.

Pull up and dispose of any material that s compressed water stained or moldy it s useless. Courtesy of department of energy. Grab a tape measure and a flashlight to see what kind of insulation you already have in the attic and how deep it is. As you can see the benefits of a tightly sealed home far outweigh potential negative effects.

And the extra heat is not just a summer concern come winter hot attic air can melt snow on the roof during. Then use the numbers in the chart at right to estimate its r value. 1 attic living space have equal or close rh at some point in the day probably early morning in summer and 2 the attic was tightly sealed. Now that the house is properly sealed it is crucial to verify the attic s thermal insulation is adequate and properly installed.

Then finish up by sealing the access hatch with self sticking foam weatherstrip photos 10 and 11. Poorly insulated ducting can cause heat loss in colder months and the loss of conditioned air in the summer in vented attics. However in a traditionally insulated attic insulation on the ceiling the attic is vented. Sealed attics trap excessive heat and moisture which can lead to reduced shingle life.

The insulation on the floor of your attic needs to have an approved vapor barrier installed on the warm in winter side of the insulation. As attic temperature rises rh in that air mass would initially decrease which would mean dp would rise and certainly not fall and would also be higher at the attic ridge than the attic floor. When we seal the attic with spray foam it s as tight as a butter tub. The attic is usually where you can find some of the largest opportunities to save energy in your home.

Unventilated attics are common where roof assemblies are complex and it s difficult to create a sealed ceiling plane. Make your home tight and improve indoor air quality. 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. Apply self adhesive foam weatherstrip tape to the top edge of the stop.