0

I've recently built an addition and over ordered sub floor so the result is I have enough sub floor (3/4" tongue and groove OSB) to do a good amount of exterior sheathing.

My question however, should I? Are there consequences other than the sheer cost of the lumber to actually using this heavy grade of OSB on a 2x4 exterior wall or will it just produce a tighter, more insulated wall?

|improve this question
1

Structurally, it's not a problem. If there are windows, you may need bigger trim (surround) by 1/4". (By the way, most residential walls need to be 2x6 construction due to the energy code.)

|improve this answer
  • Door jambs will be too shallow, also. I'd sell it on your local trader website and use 7/16. – isherwood Aug 8 '17 at 15:40

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.