Hello, looking for threads to pull at for diagnosing our problem.
20 year old 'new build'.
Downstairs WC starts to drain slowly. Over the course of a week the water will not drain and it gets to the top of the pan. Run the sink in same room when WC is blocked and it also won't drain. If I leave it like that for 10 minutes or so we hear some gurgling from upstairs WC or bath then it clear itself quick rapidly. The process then repeats. Been going on a while.
All these things share the same soil stack which vents in the loft.
It's like there's a air lock somewhere.
Could this be the Aav? I can't remove it as it's glued in.
Or more likely theres a blockage downstream?
Anyone have any ideas from my symptoms?
Thanks
20 year old 'new build'.
Downstairs WC starts to drain slowly. Over the course of a week the water will not drain and it gets to the top of the pan. Run the sink in same room when WC is blocked and it also won't drain. If I leave it like that for 10 minutes or so we hear some gurgling from upstairs WC or bath then it clear itself quick rapidly. The process then repeats. Been going on a while.
All these things share the same soil stack which vents in the loft.
It's like there's a air lock somewhere.
Could this be the Aav? I can't remove it as it's glued in.
Or more likely theres a blockage downstream?
Anyone have any ideas from my symptoms?
Thanks