DIY Doctor

Main navigation

Foul Stench from Somewhere in new Bathroom but no Leak?

Postby edinburgher » Tue Oct 20, 2015 7:45 pm


We had our bathroom done in March this year, have had problems with a lingering/sewagee bad smell very occasionally but it has always gone away within the day and we assumed it was maybe just typical toilet bad smells but recently it has gotten worse and more constant so I have been trying to find the sorce with no luck.

Pretty sure its not a leak as im in a upper flat and would have heard about it, also no moisture to be found. So im assuming it might be a dodgy set up? and gas might be getting back in through a waste outlet?

I don't think its the toilet as it always full of water and I am convinced the smell is coming from under the bath somewhere. There does seem to be water in both the bath u bend and in the sink trap so im a bit confused as to where the smell is getting in?

The following pics show the setup, there pretty self explanatory I think but I can describe it more if needed, any advice would be greatly appreciated:





Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Oct 20, 2015 12:36 pm


Simply Build It

Postby edinburgher » Sat Oct 24, 2015 12:58 pm

I decided to have a closer inspection and removed a bit of plaster to check connection to external pipe. the plastic pipe just seems to be stuck into an existing lead pipe, could the fumes be coming in around this?
DSCN3600.JPG (71.73 KiB) Viewed 2034 times

The lead pipe is connected out througha thick stone wall to the external cast iron pipe which also serves the flats below. The left outlet is from toilet to seperate stack, the right serves bath & sink. - Phot is looking out window and down external wall.
DSCN3604.JPG (67.84 KiB) Viewed 2034 times
Rank: Labourer
Progress to next rank:
Posts: 2
Joined: Tue Oct 20, 2015 12:36 pm

Postby rap12 » Sat Oct 24, 2015 2:45 pm

Check the WC pan spigot connector for the faintest of leaks.

Check how the basin and bath waste connects to the soil pipe.
Rank: Apprentice
Progress to next rank:
Posts: 16
Joined: Tue Nov 05, 2013 1:17 pm

Display posts from previous
Sort by
Order by

  • DIY How to Project Guides
  • DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!

  • Related Topics