Quote:
Originally Posted by snbrafford
I can't speak to the garage door insulation. A previous owner to my house installed a powered ceiling fan (about a foot square) in the garage ceiling that can be turned on/off. In addition, there were two vents placed at the bottom of the garage door so you can turn the fan on and it pulls air in though the door vents and vents it into the attic area. I've not used much as I don't work in the garage much but thought I would include this to give an idea.
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Cutting a hole in the drywall to install a vent fan to your attic destroys the fire barrier. Only safe option is to buy a fan that includes automatic fire damper.