My toilet keeps blocking

[Mac456]

Yeah I kind of think the same but because we have a shared manhole (next door) it is making it much harder to diagnose unfortunately.

How do drains companies usually clean drains? Jet from outside or could they also do it via the air admittance valve?

Could I use a snake or something from the top of the waste pipe?

Thanks

 

[sammathias]

They could jet back from your manhole to your toilet. Or jet down from the aav. Personally flushing a few loads of toilet paper down and checking the manhole, 2 man job. Would show if your line is blocked. Next door will have a seperate line

 

[Mac456]

Hi all,

I thought I would update this in case anyone else has the same issue.

It turns out sammathias was correct, there was a partial block somewhere on the line.
About 1 month later (when I noticed anyway) our outside drain gully started backing up and slowly draining away (this links to the main soil stack)

So I got the Pros back in and this time the gully was jetted and eventually "whoosh", down went the build up of water.
Along with that came the sewer stench where the plumber had incorrectly fitted the aav!
I assume the blockage was stopping the smells coming through.

I have now refitted the valve correctly and so far everything has been fine since (touches wood)