Replacing a floor-mounted toilet with a wall-hung toilet

[Andrew McIntyre]

I would like to replace my traditional floor-mounted toilet with a wall-mounted, one of the main reasons for replacing is I do not have enough room in front of the toilet, the dry stack and toilet drain share the same line and is right behind bathe original toilet. I am unable to relocate the toilet, so now I have to somehow relocate the dry stack vent so it doesn’t interfere with the interior wall-mounted tank and brace. Not sure what to do, and drain and vent are cast iron