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submitted 6 months ago by [email protected] to c/[email protected]

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Renovating the bathroom and found these dark patches in the joists and roof lumber surrounding the old vent pipe. The PVC part is new.

Anything bad here? Anything we need to address?

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[–] [email protected] 7 points 6 months ago

I'm not a contractor.

I'd poke around for rot and mark the edges to make sure it isn't spreading. Maybe try to get up there and check after a storm.

It could absolutely be an old problem that stained the wood. I might make a 1-year calendar reminder if I didn't see anything after a rain.