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Question DetailsAsked on 5/26/2017

Bathrm remodeled;now occasional urine type smell - seems to come from the walls-Worse in summer. Not always present

During the Winter there is no smell. Once it starts to warm up or I open the window the smell is very strong. It is not coming from the toilet or the sink but seems to be coming from the walls. Thought it might be the paint but can't be sure. Wondering if possible it might be the drywall? It has been 1-1/2 years since remodel. The smell is similar to urine, but not quite. But it is obnoxious and irritating to put up with. We did not have this problem prior to the remodel.

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Here are some previous similar questions with answers which should help you narrow the list, though usually tearing into the wall or underlying ceiling, or using a fiber optic scope to look in the floor/walls, is necessary to track it down.

Most common cause usually leaking toilet wax seal (or maybe they put in wrong thickness seal so it is not sealing correctly) - commonly $75-150 for a plumber to remove the toilet and look for signs of leakage where it connects to the waste line, and put in new seal and replace the toilet - that is a common first step in this sort of search.

Otherwise, if urine smell, while it could be a cracked or unconencted drain line (common to find plastic DWV joints that did not get glued or were improperly primed so the glue did not seal all around the joint), if toilet is leaking the subfloor will be permeated with the urine smell, which can come out from under an uncaulked toilet base, or at the edge of the subfloor plywood at the wall, or up into the base of the wall through wiring or plumbing penetrations.

Answered 3 years ago by LCD

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