Help please
Recently had new shower suite fitted downstairs as part of extension but having problems with bad smell from toilet. This only seems to occur when the shower is in use. No problem any other time with the toilet or sink and the smell doesn't come from the shower, just the toilet.
There are traps on the shower and sink with the waste from both running into the toilet soil pipe on the external wall.
Not sure if the reason could be that the soil pipe from the new toilet doesn't have a vent at the top, it just runs into the ground and meets with the waste pipe from the tall soil stack which is vented.
The plumbing was all checked and passed by building control so i'm a bit confused to what the cause could be.
Recently had new shower suite fitted downstairs as part of extension but having problems with bad smell from toilet. This only seems to occur when the shower is in use. No problem any other time with the toilet or sink and the smell doesn't come from the shower, just the toilet.
There are traps on the shower and sink with the waste from both running into the toilet soil pipe on the external wall.
Not sure if the reason could be that the soil pipe from the new toilet doesn't have a vent at the top, it just runs into the ground and meets with the waste pipe from the tall soil stack which is vented.
The plumbing was all checked and passed by building control so i'm a bit confused to what the cause could be.