DIYbanter - View Single Post - insulating steel garage door

Rick Blaine

wrote:

Went to the local home improvement store to investigate possible
approaches to insulate my steel garage door. One option is a sort of
buble wrap stuff with foil on both sides, that's supposed to be a very
good reflective barrier. The other option is poly-foam of varying
thickness.

What problem are you trying to solve? If your garage door is uninsulated,
chances are the walls in your garage aren't either. Since at least one of those
is probably an exterior wall, you won't see much improvement in the garage
temps.

If there are gaps in or around the door, you might be able to improve things a
little by blocking the air infiltration with a better door seal.

Given where you live, you might also consider the effect of an insulated garage
on your vehicle. The major cause of rust is salted roads, splashed on the
vehicle. This process is accelerated by bring the vehicle into a warmer garage.
Better that it stay as cold as possible.