No room for soil pipe, need to improvise

[Tim Kane]

Guys, hope someone can help. I'm a competent DIYer that's doing up my bathroom.

I'm moving a toilet, the plan was to just drill straight out the wall and then connect to soil stack. Unfortunately, there's a conservatory right behind the wall I need to drill through. The soil stack goes through the conservatory and is boxed in. I was just going to add a bit of 80cm boxing at side of the stack. Problem is where the conservatory roof slopes down there's not much room to fit the soil pipe where it needs to go.

My solution on the right of the diagram I've added is to put the soil pipe in at an angle, then use a flexible connector. Its a back to wall toilet to make things a slight bit harder!

Any other ideas? I've thought of using an offset connector, but I reckon I need to drop the pipe down about 150mm to make the soil pipe fit with a comfortable clearance to the conservatory roof.

Edit: Joists run the wrong way to just drop straight down and use a 90 degree pan connector.

 

[Hot&Cold]

Its a back to wall toilet to make things a slight bit harder!

Mcalpine do a flexible back to the wall wc connector https://mcalpineplumbing.com/sites/default/files/section_5.pdf as in the picture th flexible connector is angled downwards.

 

[Tim Kane]

Mcalpine do a flexible back to the wall wc connector https://mcalpineplumbing.com/sites/default/files/section_5.pdf as in the picture th flexible connector is angled downwards.

Yep, I was thinking of using one of those Alpine flexible pan connectors. They do a rigid 14 degree one too, not sure that would be enough of a drop tho.