BarnBuiltBeaters
Well-known member
- Joined
- Jan 11, 2022
- Messages
- 120
I have a question for some of you more experienced. I need some PVC plumbing advise. I am redoing my bathroom and the upstairs toilet drainage drops below the rafters, into a T, then goes down into the basement. The upwards portion of the T goes to a street 45° up and out the roof (Vent).
Since the rafters are already notched for the toilet, I would like to tuck it up allowing me to not have a lower ceiling height (about 6”). My concern is, the street 45° makes it so I am unable to cut the T out and I cannot access what is above the 45 allowing for easy modification.


What are my options?
A bump in the wall? Not pleasing to the eye though
Drop the Ceiling? Bathroom is small and this would make it smaller. Also having to drop the ceiling 6” wood would get semi expensive and be a “hack job” imo.
Separate the PVC T? I was able to do this in the basement with ease but if it failed (broke) I had a backup plan, here I do not. I have access to a heat gun and have read this will allow for separation. Yet I have also heard PVC pipes are welded not glued.

Here is what ideally what I want to do. Sorry for the terrible picture/drawing, best I could do.
Cut the "T" out and replace it with a piece of pipe (which would leave toilet disconnect but still have the vent).
Cut out a section in the pipe and put in a "Y" pipe in which would then travel parallel to existing pipe and connect up to a new, tucked up, pipe to the toilet.
I can easily do all of this but am worried about seperating the joint of "T" and street 45°.
Since the rafters are already notched for the toilet, I would like to tuck it up allowing me to not have a lower ceiling height (about 6”). My concern is, the street 45° makes it so I am unable to cut the T out and I cannot access what is above the 45 allowing for easy modification.


What are my options?
A bump in the wall? Not pleasing to the eye though
Drop the Ceiling? Bathroom is small and this would make it smaller. Also having to drop the ceiling 6” wood would get semi expensive and be a “hack job” imo.
Separate the PVC T? I was able to do this in the basement with ease but if it failed (broke) I had a backup plan, here I do not. I have access to a heat gun and have read this will allow for separation. Yet I have also heard PVC pipes are welded not glued.

Here is what ideally what I want to do. Sorry for the terrible picture/drawing, best I could do.
Cut the "T" out and replace it with a piece of pipe (which would leave toilet disconnect but still have the vent).
Cut out a section in the pipe and put in a "Y" pipe in which would then travel parallel to existing pipe and connect up to a new, tucked up, pipe to the toilet.
I can easily do all of this but am worried about seperating the joint of "T" and street 45°.
