Quote:
Originally Posted by MrGolf
Does it help to open the attic door to have the warm air in the garage rise into the attic? I have a hard door (insulated) and a separate screen door which I use to bring air in. I also have a window and a small fan which I use to try and circulate air. Next week we are having the attic reinsulated to an R38. I can’t add ceiling fans due to the overhead installation to accommodate the screen door. Not looking for a miracle but something to make it a little more bearable during the summer months
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A 1000 cfm fan placed in the garage ceiling will exchange all on the air in your garage in 3 1/2 to 10 minutes. That's assuming you have unrestricted flow into the garage and exiting the attic.
A ceiling fan does not directly help although it does make humans feel cooler. An open attic hatch would help but certainly not at the same speed of air exchange.