You are reading a single comment by @Cupcakes and its replies.
Click here to read the full conversation.
-
Definitely worth getting advice from someone experienced in the design (not me) if you want to proceed.
In my case the design was historic and there was no obvious way to improve it. We had to have the stack cleaned by jetting, which was fine in and of itself although I'd not want to be doing that inside my own flat! (They jetted it from an access point by the main door to the stair).
Cupcakes
Hmmm.. might swerve this design then.