I have a pretty standard steel double garage door. My garage gets up
to about 145 degrees during the summer mostly because my house faces
the sun pretty much all day. Is there any value to me adding
insulation to the garage door panels? It seems to me that some kind
of styrofoam insulation would fit perfectly in the panels. I've seen
the kind with the metallic coating on it before. Would this help or
am I wasting my time?

Thanks, Chris