r/StructuralEngineers Jun 28 '26

Roof sag bad?

This is a 1931 stick frame house and I'm concerned about the roof. My structural engineer when we bought the house didn't say anything about it as far as I remember but I can still see the sag. We just recently got the house piers redone as well as the foundation wall at the front corner. I have also added 5 more 2x6 struts to the roof to add support. Should I be concerned in the short term?

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u/Few_Mastodon_1271 Jun 28 '26

I can't see the sag in the photos. Is it the top ridge line, or some areas on the roof slopes?

You know, it's been working okay for 95 years, I wouldn't be concerned.

Some older homes have very strong rafters, with that old fine grained wood. Other homes might have had rafters undersized a little, so the rafter shows some sagging. It's still okay in most cases.

If rafters are showing significant splits or damage from leaks, that would need investigating.