Answer: That's a tough one. First, I should say that most garage doors today will come insulated. Yours must not be insulated. Secondly, Owens Corning does not manufacture an insulation product specifically for garage doors, nor does it have any instructions on how a homeowner can insulate a garage door. Before the company can be helpful there are many questions to be asked, e.g. automatic door, sliding door, how tall, flat or ribbed, how will you attach the insulation, how will it be covered, etc.? The only thing the company can do is have you call the Customer Service Center to discuss the situation and then perhaps it can offer some possible solutions. If you want to do that, please call 1-800-GET-PINK (1 800-438-7465).