How difficult is it to replace a 2" vent in concrete with a 3" for a new waste stack?
I have one side of my house that is unfinished. It has two roughed in bathrooms and the plumbing is in concrete. The stack is 2" because they didn't plan on a bath upstairs. I want to add a bathroom upstairs so can I cut the concrete and put in a 3" Wye to create my waste and vent stack, re-cement it?
There's no stack yet, just the 2" fitting in the floor. The wall is not even framed yet but it would go up the wall, then attic and out. It's located just behind the toilet drain and ties into the toilet before going horizontal to the septic. I'm not sure if they put in 2 x 3 Wye or Tee. So again, would I just cut up the concrete and replace that with a 3 x 3 wye and re-cement it? I'm assuming I'd have to stud it out with 2x6's?