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Old 03-31-2014, 07:33 AM   #1
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Garage Insulation


Hi All,

Has anyone insulated their garage? my garage is some what in my house. Such that we have one bedroom floor that is partially over the garage ceiling.

I have left over FG blankets and FG batts cutouts from my basement, I was thinking about using them in the garage, as oppose to throwing it out.

We already top-upped the attic to an r-value of 60. (might have settle to 50 now).

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Old 03-31-2014, 10:30 AM   #2
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Garage Insulation


Anything you can do to air seal and insulate the garage will certainly help.

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Old 03-31-2014, 03:57 PM   #3
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Garage Insulation


Post up a picture of the garage attic and you will get more feedback.
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Old 03-31-2014, 10:15 PM   #4
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Garage Insulation


The garage ceiling should be covered with Type X 5/8" drywall and foamboard under that if you wish, Fig.7; http://www.buildingscience.com/docum...n-crawlspaces/

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Old 04-01-2014, 09:05 AM   #5
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Garage Insulation


I would recommend insulating with a combination of foam board and closed cell spray foam. You can put the foam board up first, then apply 1" of spray foam over it. That will give you a much higher R-Value than fiberglass, stop air leakage, and prevent condensation. Our company's spray foam kits also prevent mold growth.

Getting an air tight seal will make a world of difference. The space will be much warmer, and it will keep odors from the garage our of your living space.

For more information you can check out the awesome guide that Gary in WA shared.
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