Wall Insulation

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Old 02-27-10, 08:04 AM
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Wall Insulation

I am new at this....when I put upthe insulation in an exterior wall do I put it up before or after the electric wiring is in? And what Rvalue do I use?
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Old 02-27-10, 09:10 AM
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Location: New England
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Hi kpc and welcome to the forum. If you fill in your location in your profile all will know where you are. Your electrical wiring all goes in before the insulation and the amount of insulation is somewhat a function of where you are. But typically you fill the wall cavity. The vapor barrier, if needed goes to the warm side of the insulation, but air sealing is the most important. Use caulking or can foam (fire rated where necessary) and seal all cracks and holes so air cannot move through the cavities, side to side, up and down, or in and out. If you are in very cold country, there are ways to add extra insulation or higher r-value insulations to choose from.

Bud
 
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