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RoadRunnerTR21 wrote:I'm glad I live in a area where there is no such thing as code. We bought a 2 year old house in 2004 that has duct work running out to the garage. I can open or close air flow by a damper valve. I have always left it closed but it is nice to know that I have the option.

puma guy wrote: If the house was built with a room above the garage or insulation was installed at the time the builder probably took steps to eliminate ground moisture from migrating through the slab. I live on the gulf coast so there's usually plenty of moisture (recent droughts not withstanding) in the gumbo soil. Like I said I'm no expert just going by what the contractor told me when I was adding insulation and thought about doing the garage. I just remebered we had our rent house re-insulated two years ago and the guys advised against doing the garage as well.

puma guy wrote:I was thinking of insulation my garage once and was advised against it. It has to do with moisture in the garage and no air conditioning to remove it. The insulation actually traps moisture. I no longer have that home, but the home I now have had a room installed above the garage and has insulation installed in the floor (ceiling of the garage). The paint is bubbled and some is peeling off the ceiling of the garage. Also some of the joint tape has let loose. I assume the cause is what was described to me when I asked about insulating a garage. I'm no expert, so you might want to check with a reputable insulation contractor.