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Old 02-28-2010, 11:15 AM   #1
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live and learn - smelly bathroom


I tried but might have failed but at least I tried.
I built a new master bath from scratch installing a shower, vanity sink and toliet. All work fine, no leaks, good drainage and all have traps. The vents are currently plugged off with rags just because I haven't drilled the pipes through the roof yet. Wife say's this is the problem - I say the traps prevent odors from backing up and the vents are not the problem -BUT the bathroom has a "sewer odor" coming from somewhere - not all the time ??? It is driving me nuts because logically there is no way this odor should enter the room due to the traps.

Where can I look - any ideas? As a foot note, the odor usually comes when something is used... shower sink or toliet, any and/or all.

thanks for your thoughts

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Old 02-28-2010, 12:01 PM   #2
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live and learn - smelly bathroom


have you got water in all the traps? maybe your rags are getting sucked down the vent enough to let sewer gas get by them

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Old 02-28-2010, 12:19 PM   #3
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live and learn - smelly bathroom


thanks for the though plummen, the vent lines are not even in the room (already routed to the attic) and the rags are still where they should be so I don't think that's the issue. Also, yes all traps hold and have water in them.

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have you got water in all the traps? maybe your rags are getting sucked down the vent enough to let sewer gas get by them
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Old 02-28-2010, 12:30 PM   #4
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live and learn - smelly bathroom


if your vents are plugged, the system will draw air from somewhere. That somewhere is often through the trap of another drain. As a result, you can end up with a dry trap.
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Old 02-28-2010, 12:33 PM   #5
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live and learn - smelly bathroom


base of toilet tight?
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Old 02-28-2010, 12:38 PM   #6
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live and learn - smelly bathroom


base of toilet is good. the idea about tight vents and sucking air though a trap leave it dry is something I will look at.
thanks

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