Question: How should I insulate my garage ceiling?
Karen writes from Binghamton, New York: "My garage is below the master bedroom; the garage does have a heat source but is only minimally heated. The ceilings in the garage are currently not insulated correctly. It has the vapor barrier side facing down into the garage. I am going to take the old insulation down and re-do it. Can I use Foamular insulation on the garage ceiling or is the better choice to use pink rolled insulation with the vapor barrier side up? If I do this, should I put plastic vapor barrier over the insulation once I put it up so as not to have the fiberglass portion of the insulation exposed? If it is ok to use Foamular insulation in this setting, can I also use pink rolled in conjunction with it - for example put Foamular up first, then put pink rolled over it? Also, I was considering applying 2" thick Foamular to the exterior walls of the garage, is that correct?"
Answer: Faced rolled FIBERGLAS™ insulation is recommended in the garage ceiling. Do not put plastic under it as it needs to breathe. Since the garage is not heated we do not recommend insulating the walls.



