I want to replace the cast iron soil pipe in my bungalow, with PVC. The
junction for the toilet is a couple inches above ground level, and I'd
thought that I could remove the junction, clean up the socket, and seal
the PVC pipe and new junction (I want to raise it slightly) into that.

But I've realised that my soil pipe is 3 1/2" so presumably this
technique isn't going to work? Can I get an adapter - preferably via
internet or mail order somewhere?
--
Steve Loft