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If they rocked the walls they probalby insulated first. I'd poke a hole and see, or if you've got an outlet or switch on one of those outside walls, you could take the plate of and use a flashlight to peek in between the electrical box and the drywall to see if you can see anything. Insulation doesn't matter if the garage isn't heated. His garage door is a huge place where any heat in the garage would be lost very quickly. Using a heater in the garage is really the only option. Insulating a cold garage basically makes it no different than a cooler, it's just going to keep the cold in. And foam board insulation is usually crap for R value. The thin, foil back stuff has alsmost no R value to beging with, and it requires a 1" air space to even get the rating they claim for it. 1.5" White bead board is still $12 a sheet and doesn't have all that great an R value either. The best is the blue 2" closed cell "Scoreboard" but that sh*t is $24 a sheet. If you find that the walls aren't insulated, then cut holes in the drywall at the top of the wall, just below the top plate, buy some blow in insulation and rent the machine to blow it in. That'll be the most economical and easiest way to insulate them.
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- Rob
Wicked White '08 EVO GSR "Jaws"
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