Have a 2 car garage . Half of the gargae already has the sheetrock installed while other half is bare For insualtion purpose. Do I just use the R-13 Roll , staple it and put the drywall or do I need to do anything else ?
Usually garage would be 2x4 walls, so R15 or R13 rolls or batts. Generally you would also have a vapour barrier on the warm side of the insulation (which around here is the interior), then the sheetrock.
You might consider mineral wool rather than fiberglass. Costs a bit more but can withstand higher temperatures, doesn't absorb water, doesn't irritate the skin, and cuts with a bread knife when installing.
Chris
Wont the R-13 rolls have the vapor barrier ( the brown thing) or do i need to install it seperately Is vapor barrier a black shhet or something like that ?
It may depend on geographical area, so talk to your local building standards branch.
Around here (Canadian prairies) its very cold in winter. The insulation doesn't have kraft paper backing, and the vapour barrier is 6 mil polyethylene. The vapour barrier is sealed against the framing members with acoustic sealant, and all electrical boxes are encased in plastic vapour barrier boxes and sealed against the vapour barrier.
Chris
AIUI< it's sold both with and without. Buy it with.
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