Hi, i'm thinking about installing a conservatory but I have a soil stack installed in a corner and it can't be relocated. This means either having the pipe through the roof or, if it complies with regs, reduce the stack height and install a push-Fit air admittance Valve. Has anyone any experience of a similar situation? Any advice would be appreciated, thanks in advance.

If the soil stack is in the corner is it possible to shorten the width of the conservatory?
You say shorten the stack height but are there not pipes that feed into the stack like the wc.
The conservatory people should know sollutions

I'm possibly going to install a self-build conservatory into the small space that i have bordered on three sides - 2 right angled walls of my house and the 3rd being a boundry wall forming a U shape. There isn't the space to move the conservatory over as the stack is on the side where i would enter the conservatory from the house. There are two service pipes feeding into the down pipe at points below roof height. Thanks for replying.