Garage Door Insulation

How particular are on how it looks from the inside? If you don’t care how it looks, get some styrofoam sheet insulation that you buy at Lowe’s or had and cut to fit between the frame and panels.

If you are particular about the way it looks from the inside, just nut up and buy a new insulated garage door.

Previous owners installed one of the kits with little brackets that hold standard fi burglars insulation made for garage doors. All the brackets are failing and the insulation often starts hanging off and has to be rigged in place. Our garage stays cool though and it's not air conditioned (just surrounded by climate controlled spaces). I plan to eventually replace with foam boards cut to fit and foil sheets and tape for a relatively clean look.

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I plan to eventually replace with foam boards cut to fit and foil sheets and tape for a relatively clean look.

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this is how we do it in the commercial setting
it looks good if you take your time

insulated garage doors aren't that expensive. I'd just upgrade the door.