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Old 10-18-2008, 11:49 AM   #1
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Insulation and Steel studs

I am getting ready to insulate a wall I built in my garage using steel studs. I have not been able to find anything that tells how this SHOULD be done. Obviously staples are out. I'm going to be using R-13 plastic wrapped. Any suggestions? Thanks in advance. Rob.
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Old 10-18-2008, 01:08 PM   #2
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You will just need to get insulation that fits in between the steel studs. Unfortunately, most insulation readily available is made to fit between wood studs and it is about 1 1/2" narrower. You may have to look to commercial insulation suppliers.

Even when you get the right width insulation, your biggest problem is the steel studs, which are a "thermal short circuit". Wood is not a great insulator, but it is way ahead of the steel studs.

Last edited by concretemasonry; 10-20-2008 at 09:07 AM.
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Old 10-18-2008, 02:38 PM   #3
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The insulation fits by "compression" in between each steel stud (the tight fit holds each fiberglass batt in place). This is "if" you installed the steel studs at 16" O.C.

You will need to go to a Drywall Supply Company to located insulation that is made to fit between steel studs, due to the slight variation in the actual steel stud spacing widths (Steel studs are 1-1/4" wide, as opposed to 1-1/2" wide wood studs, so there is an additional 1/2" of space in each stud bay).

You may not be able to locate kraft-faced insulation for steel studs, just the "unfaced". You will then need to ad a poly vapor-barrier over the insulation (facing the warm side of the space it is insulating).
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Old 10-19-2008, 09:51 AM   #4
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Or spray foam fills the entire cavity. Not the cheapest alternative, though maybe the most efficient.
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Old 10-20-2008, 08:46 AM   #5
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You could strap the inside, cover with mesh and dense pack with cellulose, called a MOONEY wall originally posted and discussed over at Breaktime (requires a free account to access the forum).
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