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Sewer smell upstairs when flush downstairs

Postby CMW » Wed Sep 27, 2023 6:29 am

When I flush our downstairs toilet there is a sewage smell in the upstairs bathroom.
There is no obvious blockage.
Any advice please
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Simply Build It

Postby stoneyboy » Thu Sep 28, 2023 9:02 pm

Hi cmw,
You need to check that you have a vent pipe at the highest point of you home system.
Regards S
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