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Steel studs / Basement Insulation

16946 Views 9 Replies 5 Participants Last post by  ccarlisle
I just bought enough NEW 3 5/8" steel studs and track for the entire basement at a steal form Habitat for Humanity.
I plan to frame and insulate the outer walls only, within 6 weeks to get an energy rebate.
Several questions,
When I space away from the wall, is there a way to use more than R 13.5 fibreglass insul in , not compressed of course?
Can I use R20 and let it hand out the back without collapsing, or is there a way to support it to keep from sagging or is spray foam or rigid in behind my only other option.
Second, if I spray foam, then obviously no air gap, but can I spray over a wall with a fine crack / leak which is caused by bad drainage outside... in a window well. The drainage is being improved as I plan to excavate the outer wall and clogged window well to seal at the same time.
Any other pointers for lapping corners , etc with steel studding would be appreciated.
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Steel studs are a no-no in basements. Will rust and will rust screws within 5 years. Transmit cold from behind...
If done wrong, this statements right.

We use styrofoam on the walls and then 2X2 metal studs in front that. let the track sit on top of a double layer of rolled pink foam insulation. No rust and termites and other vermin and mold dont like the metal studs either. Wood in basements is a no-no.

We also use green board for the bottom perimeter all around the regular white on top and ceilings

Not sure where you live but R20 for a basement is overkill IMO. 2" foam is good enough with R19 in the floor joist bays at least 2' into the room all around.
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