Sewer Gas Odor In Master Shower - Plumbing - DIY Home Improvement | DIYChatroom
Advertisement


Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > Plumbing

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Search this Thread
Display Modes
Old 03-21-2016, 01:15 PM   #1
Newbie
 
Join Date: Mar 2016
Posts: 2
Rewards Points: 4
Question

sewer gas odor in master shower


We have a fiberglass shower that is 12 years old. Without warning, we had a serious sewage gas type of smell emitting from the master shower drain. This shower is used daily, so the p trap is not dry and it is holding water. There are no drainage issues. We have tried Zep Draincare, bleach, vinegar, and other disinfectants. The odor only stops when using the shower, but returns in about 10 minutes after we turn the water off. Also, there was a 2 week period of time in which the odor completely disappeared when we were out of ideas and waiting on the 1st plumbing appointment, but the odor returned.

We have had 2 plumbers out, but they are unsure of the cause. One said it was the worst smelling residential shower drain he has smelled in his career. Both agree that the p trap is good. They snaked the drain thinking that maybe there was organic matter collecting in the plumbing. They placed a Sure Seal to help, but the odor still escapes into the bathroom. The 2nd plumber suggested that it is possible that water is getting under the pan and I should have the shower replaced. I would hate to have the shower replaced if that is not the problem. I do not see any cracks. I am currently conducting a shower pan test, but so far there has been no change in water level.
codell01 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-21-2016, 03:36 PM   #2
Member
 
Join Date: Jun 2010
Location: Seattle, WA
Posts: 722
Rewards Points: 1,414
Default

Re: sewer gas odor in master shower


Quote:
Originally Posted by codell01 View Post
We have a fiberglass shower that is 12 years old. Without warning, we had a serious sewage gas type of smell emitting from the master shower drain. This shower is used daily, so the p trap is not dry and it is holding water. There are no drainage issues. We have tried Zep Draincare, bleach, vinegar, and other disinfectants. The odor only stops when using the shower, but returns in about 10 minutes after we turn the water off. Also, there was a 2 week period of time in which the odor completely disappeared when we were out of ideas and waiting on the 1st plumbing appointment, but the odor returned.

We have had 2 plumbers out, but they are unsure of the cause. One said it was the worst smelling residential shower drain he has smelled in his career. Both agree that the p trap is good. They snaked the drain thinking that maybe there was organic matter collecting in the plumbing. They placed a Sure Seal to help, but the odor still escapes into the bathroom. The 2nd plumber suggested that it is possible that water is getting under the pan and I should have the shower replaced. I would hate to have the shower replaced if that is not the problem. I do not see any cracks. I am currently conducting a shower pan test, but so far there has been no change in water level.
Sewer smell means you're getting air to that location from the plumbing somehow. It could be a crack in a pipe past the trap, for example. Or another source in the bathroom that the water flow from the shower is somehow masking the smell of.

I would try checking the other traps and seals first (other bathroom fixtures), running water and checking for leaks there, maybe replacing the wax ring on the toilet. After that you might need to think about opening up the plumbing under the shower.

Disclaimer: non-plumber.
Tom738 is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 03-21-2016, 06:41 PM   #3
Member
 
Join Date: Oct 2011
Location: PA
Posts: 5,918
Rewards Points: 582
Default

Re: sewer gas odor in master shower


you may be getting trap seal pulling from another fixture ...have someone flush commodes one at a time ..then fill sinks.. drain one at a time...see if it pulls the trap seal and allows sewer gas in...maybe a clog in the vent..?????
ben's plumbing is offline   Reply With Quote
The Following 2 Users Say Thank You to ben's plumbing For This Useful Post:
dougp23 (04-02-2016), Tom738 (03-21-2016)
Sponsored Links
Advertisement
 
Old 03-21-2016, 09:28 PM   #4
Member
 
Join Date: Oct 2015
Location: Winnipeg, Manitoba
Posts: 66
Rewards Points: 114
Default

Re: sewer gas odor in master shower


I would advise to do what bens plumbing has suggested, it sounds like the trap seal is being pulled due to a venting issue.
Chrisathome is offline   Reply With Quote
Old 04-02-2016, 06:50 PM   #5
Newbie
 
Join Date: Mar 2016
Posts: 2
Rewards Points: 4
Default

Re: sewer gas odor in master shower


So I completed the shower pan test on 3/21/16. I added more Zep Draincare to this water prior to draining the water. There was no change in water level after leaving the water in the pan all day. After I drained it, the smell has yet to return. This was 12 days ago. Now, we had stopped using this shower for about 1 week prior to the shower drain test and used it for the 1st time today. So far, there is still no odor. In regards to a vent issue, the plumber said that we don't have a vent associated with this shower. The odor was definitely coming from this drain, with no odor emitting from the garden tub, 2 sinks, or toilet in this particular bathroom. There are no visible plumbing leaks from any other sources in the house. The smell does not return when we flush either toilet, any of the sinks etc. Both plumber said that it is not the wax ring on the toilet. They also both assure me that there is no way that it is sewer gas because of the p trap holding water, but it sure smells like sewer gas to me. The million dollar question here is why it will disappear and then return! If it is a crack somewhere, the smell would be constant right? If the trap seal is pulling, wouldn't it always do so? The 1st time the odor stopped for no reason, we had continued to use the shower. This time, we have not used the shower. What is the variable that is causing the odor to come and go every few weeks??
codell01 is offline   Reply With Quote
Old 04-02-2016, 07:06 PM   #6
Member
 
Join Date: Mar 2016
Posts: 129
Rewards Points: 258
Default

Re: sewer gas odor in master shower


from the strainer screen on the shower down to where the trap seal water is, about how much distance is this? how long is the pipe?
woodchopper65 is offline   Reply With Quote
Old 04-03-2016, 10:50 AM   #7
Member
 
Join Date: Apr 2011
Location: Saskatoon, SK
Posts: 97
Rewards Points: 123
Default

Re: sewer gas odor in master shower


As I've worked on some of my own home plumbing projects I've found that when you crack open the pipes sometimes you get a lot of sewer gas coming out and sometimes next to nothing, city sewer variables which I don't know anything about.

Also, internal house pressure may be one reason, ie. all windows closed and bathroom fans and dryer running creating negative pressure will draw the gas in easier.
readar is offline   Reply With Quote
Old 08-21-2016, 09:06 PM   #8
Newbie
 
Join Date: Aug 2016
Posts: 1
Rewards Points: 2
Default

Re: sewer gas odor in master shower


Rest assured there is a clog somewhere in the line that the shower attaches to. It does NOT have to be at the shower drain. The clog - probably from the sink (hair) or the toilet (tampon/baby wipes) is big enough to interfere with the venting inside the pipe. The smell comes from the shower drain (lowest drain in the line) when the improper venting in the pipe results in the shower water displacing the air in the pipe.....water goes down, air comes up.

Snake the entire line, starting with the most probable (toilet), then the sink, then the tub, etc.

The blocked vent isn't coming from the roof, but rather the blockage is INSIDE the pipe itself. Find the clog, remove it, and your entire line will vent the way it is supposed to and your shower drain stink will vanish.
DragonKing is offline   Reply With Quote
The Following User Says Thank You to DragonKing For This Useful Post:
Stew160 (08-22-2016)
Old 08-21-2016, 10:00 PM   #9
Member
 
Join Date: Nov 2012
Posts: 4,827
Rewards Points: 3,220
Default

Re: sewer gas odor in master shower


Welcome to the forum dragonking.

Good advice, but the thread is over 5 moths old. Sometimes posters don't post the final results and post can be misleading. I'm sure the OP found a solution by now.
jmon is offline   Reply With Quote
Old 08-22-2016, 09:56 PM   #10
Master Plumber
 
Javiles's Avatar
 
Join Date: Dec 2011
Location: Miami Florida
Posts: 1,612
Rewards Points: 1,012
Default

Re: sewer gas odor in master shower


Old Post but if you want to rule in or out sewer gases? smoke test the system no guessing seeing is believing.
__________________


Experience is Knowing what to do next, Skill is knowing how to do it

http://www.americandrain.net
Javiles is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply


Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Bathroom shower surround StevePax General DIY Discussions 0 11-12-2009 12:31 PM
Master Bath Floor and Shower Tile. frankie_dee Tiling, ceramics, marble 11 05-23-2009 06:08 AM
sewer backed up in basement floor drain and shower kristina1961 Plumbing 11 04-13-2009 12:19 AM
Honey, I'm going to re-caulk the shower... homebound Remodeling 1 02-10-2009 09:11 AM
Plugged master shower drain tam331 Plumbing 1 12-06-2006 11:33 PM




Top of Page | View New Posts