Hi all, thanks for the replies they were helpful
At a guess I'd say the white pan connector was fitted to the old pipe before the new elbow was fitted and the deposit is just some scale from the old pipe. Would have been best to clean it first but I dont think it warrants a callback unless its leaking.
Looks like it was scale, it was difficult to get to but I was able to poke it with a stick and it dropped off and had the consistency of crumbly stone.
Preferably the soil needs altering to make the final connections less strained , can’t tell from the photos how easy this would be but it would definitely be better long term to relieve all that strain and use rigid pipe instead of a flexi.
Unfortunately this house isn't simple to work in 😆,
Just to expand on whats going on and to pick your expert brains, It's actually the second time the plumber has done these pipes, first time was 3 years ago when we moved in and gutted the bathroom, it was all cast iron and still is below that tee, they just replaced the pan connector and pipes above but originally plumbed directly into the top of the soil stack as there was no vent pipe and it was presumed at the time that it must of been connected to next door as its a old terraced house.
However we kept have issues with sewage smells in the bathroom during the summer mostly but occasionally in the winter to and when doing work on the roof and loft we found the old vent pipe so at some point in the past before we brought it someone had cut and capped the top of the stack to just above the bathroom floor?? Why i don't know! so we had him come back (its a plumber that's contracted to my uncles business so we weren't a priority and it took a few months to get my uncle to send him over, money over family apparently 😆) to fit a durgo valve to hopefully stop it as the thought is that when we flushed the toilet it was creating a vacuum as no inlet and drawing the sewage gas up into the bathroom and as theres no vent the pressure somehow allowed it to leak out??
that was my uncles idea (he's not a plumber but the company build and renovate old property so has a lot of experience im guessing) but the plumber thinks the soil stack is cracked and wanted to replace it but because of were it runs it would mean ripping out half our kitchen to get to it so it was decided to try the durgo first, which probably explains why it looks a bit of a rush job not that that is an excuse since we still pay my uncle just family rates (although I still think he's more expensive than others🤣🤣🤣)
I'll put some extra pics
Based on the above and the new pictures does anyone believe that there's anything urgent that needs rectifying, otherwise its going to be trailed over the summer to see if it resolves the issue. I'm only installing temporary boxing so I don't have a horrible pipe stuck in my bathroom (the boxing in picture is the temporary temporary boxing while I wait on some mdf, I'm shielding so was just using scrap i had in the shed, don't judge 🤣🤣🤣). Also how high does the durgo need to be above the tee, I was hoping that it wouldnt be that tall as we walk our elbow reaching for the big roll now 😅, I was thinking half that hight as its only the toilet that connects to the stack, the sink and bath drain into a different gray water system.
Thanks all
