- Joined
- 12 Jun 2016
- Messages
- 4
- Reaction score
- 0
- Country
Hi all,
Common problem but wonder if any old hands can help me pinpoint the cause. There's a sewage smell in a client's ground floor bathroom, which they say seems to occur when the bathroom is used. (They've gone away on holiday and come back and it smells fine).
There is no external vent, the system is connected to an internal durgo valve which is over a meter above the floor in room adjacent to the bathroom. I've flushed the toilet and the traps don't seem to be emptying. I've attached a diagram of the set up, the toilet is going straight into the main soil pipe which connects to the main sewer, and the sink and bathtub first run into a stub stack which then connects to the main soil pipe via swept T.
I'm thinking it can either be one of several things:
Back pressure in sewer causing gas to come up through the traps.
Durgo valve faulty and causing traps to drain enough to let gas in.
Loose soil pipe connection to toilet.
Shallow p-trap on the bathtub not selling in sewer gas. (It gurgles a lot when the sink tap is running).
Any thoughts would be much appreciated!
Thanks,
Alex
Common problem but wonder if any old hands can help me pinpoint the cause. There's a sewage smell in a client's ground floor bathroom, which they say seems to occur when the bathroom is used. (They've gone away on holiday and come back and it smells fine).
There is no external vent, the system is connected to an internal durgo valve which is over a meter above the floor in room adjacent to the bathroom. I've flushed the toilet and the traps don't seem to be emptying. I've attached a diagram of the set up, the toilet is going straight into the main soil pipe which connects to the main sewer, and the sink and bathtub first run into a stub stack which then connects to the main soil pipe via swept T.
I'm thinking it can either be one of several things:
Back pressure in sewer causing gas to come up through the traps.
Durgo valve faulty and causing traps to drain enough to let gas in.
Loose soil pipe connection to toilet.
Shallow p-trap on the bathtub not selling in sewer gas. (It gurgles a lot when the sink tap is running).
Any thoughts would be much appreciated!
Thanks,
Alex