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Is this discoloration a problem? (photos.app.goo.gl)

submitted 4 months ago* (last edited 4 months ago) by davidalso@lemmy.world to c/homeimprovement@lemmy.world

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Bathroom renovation revealed this black staining in the ceiling lumber next to a vent pipe. Is it a problem? (The PVC pipe is new.)

I seriously suck at Lemmy. I deleted this post I guess?

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[–] Cybermatrix1 1 points 4 months ago

Is this photo upside down then? If that is a vent pipe does it get cold in the winter and warm where the photo has been made? Then it would be condensing where the mold is. The black lines further on the beams seem like that it has become wet and dry periodically. The wood seem still hard? You can test it with pushing a screw driver in.