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hicow t1_j9e6dd3 wrote

And some newer - it's more efficient to use 2x6s on 24" centers vs 2x4s on 16s, in terms of exposure for exterior walls.

But it's also worth knowing older houses took "on center" measurements as more of a suggestion. I insulated the crawlspace in my 120-year old house last year and the joist spacing was interesting, to say the least.

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porcelainvacation t1_j9e9hiw wrote

It only means anything to have even on centers when you build with sheet goods.

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