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I'm adding ceiling joists in my garage. It's a 19' span between walls, and I'm using structural or #1 lumber. Should I use 2x8x22 OR 2X10X22 spaced 12" on center? I'll be adding 1/2" or 5/8" drywall.

  • You're asking two distinct questions here. Please revise to ask just one, and post a second question if you like. Take the tour to learn more. – isherwood Jan 31 at 21:00
  • Below the top of wall, which would give me 8' - 8'3" ceiling from floor. – Victor Jan 31 at 21:51
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You added below the top of the wall in the comments. So I would lag a rim joist to the studs and use joist hangers.

Span will look like this:

2x10 @ 12oc for #2

2x8 @ 12oc or 2x10 @ 16oc for #1

2x8 @ 16oc for select

span table span table

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