plumbing vents
Posted by Dean on January 13, 2003 at 18:10:03:
Was on my roof and noticed that the vents coming out of the roof all had a black sooty coating on the inside except for one, this one was clean. This is the vent that is attached to upstairs Master Shower. Is it possible that the trap on the shower is incorrect(evidence of prior repairs done to the shower)allowing the venting through the shower and not the vent?

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