Hi
I've had searched the forums with this issue and am pretty sure it's one of two things but I wonder if you experts can shed some light as to which.
I've got an 80's new build end terrace house with internal soil vent pipe and an upstairs and downstairs toilet.
Yesterday, the upstairs toilet was flushed, not particularly overloaded with paper of anything sinister, but immediately after the water level in downstairs toilet starting rising. It eventually dropped but since then things aren't working as they should.
Everything upstairs flushes and drains as expected and I can hear it falling down the main vertical soil pipe. But, as soon as something drains upstairs, the downstairs sinks start gurgling and the downstairs toilets bubbles. If too much is drained upstairs then the water level in the downstairs toilet starts rising.
Last night nothing was being run or flushed apart from the dishwasher. This caused the waste water from the dishwasher to back up into the kitchen sink. The same thing happened today when the washing machine drained.
I guess it's either a blockage or pressure/vent problem.
I don't think I have an AAV/Durgo as the soil pipe stops at the top of the loft and I can see a mesh vent on the top of my roof. I gather this is venting to atmosphere? Can this become blocked or can it fail? Could this be the problem?
Or, is it more likely to be a blockage somewhere towards or in the mains?
There's no obvious manhole covers close to my property to check (one in the road but it's covered by a van at the moment). Neighbours not in at the moment to check if they have problems but they're the type to have knocked already if they have.
Before I call someone else out I'd like to try and at least understand if not fix this myself.
Bleach, hot water etc etc not doing much to help.
Cheers for any advice.
I've had searched the forums with this issue and am pretty sure it's one of two things but I wonder if you experts can shed some light as to which.
I've got an 80's new build end terrace house with internal soil vent pipe and an upstairs and downstairs toilet.
Yesterday, the upstairs toilet was flushed, not particularly overloaded with paper of anything sinister, but immediately after the water level in downstairs toilet starting rising. It eventually dropped but since then things aren't working as they should.
Everything upstairs flushes and drains as expected and I can hear it falling down the main vertical soil pipe. But, as soon as something drains upstairs, the downstairs sinks start gurgling and the downstairs toilets bubbles. If too much is drained upstairs then the water level in the downstairs toilet starts rising.
Last night nothing was being run or flushed apart from the dishwasher. This caused the waste water from the dishwasher to back up into the kitchen sink. The same thing happened today when the washing machine drained.
I guess it's either a blockage or pressure/vent problem.
I don't think I have an AAV/Durgo as the soil pipe stops at the top of the loft and I can see a mesh vent on the top of my roof. I gather this is venting to atmosphere? Can this become blocked or can it fail? Could this be the problem?
Or, is it more likely to be a blockage somewhere towards or in the mains?
There's no obvious manhole covers close to my property to check (one in the road but it's covered by a van at the moment). Neighbours not in at the moment to check if they have problems but they're the type to have knocked already if they have.
Before I call someone else out I'd like to try and at least understand if not fix this myself.
Bleach, hot water etc etc not doing much to help.
Cheers for any advice.