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Unread 01-13-2021, 07:06 AM   #35
ss3964spd's Avatar
Join Date: Jul 2005
Location: Fairfax, Va
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1) You can use drywall shims, install them with a stapler.

2) The only reason I'd want to use advantech is if regular 3/4" T&G B/C Exp 1 plywood turns out to be either slightly thinner or thicker.

3) I can't think of any. Is the space under the bathroom conditioned or unconditioned?

Gonna need to assess that joist, that's a pretty big hunk missing. How long is the joist and where along its length is the notch?
If I recall correctly my memory is excellent, but my ability to access it is intermittent.
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