: I want to replace a toilet that is over a 14" rough-in. The toilet I'd like to install requires a 12" rough-in. How effective would an offset flange be in this situation?
There could be structural conditions that prohibit this. I can't answer for all plumbers, but I will do anything I can (within code) to rough in a toilet at 12". Other rough-ins severly limit your choice of toilets in the future. If rough in a toilet with a 10 or 14" rough in, it is because it was IMPOSSIBLE to get a 12" rough in. An offset flange will only do so much. It is also deeper than a regular flange and so they are hard to use on upper levels (between floors). Try to make sure that this is actually doable before you tear into things. Some feel that offset flanges have more of a tendency to clog, but I have not noticed that.