Increasing depth of wall
I want to install a Toto wall hung toilet (with the water closet inside the wall.) However the main stack is in the way. I'm not going to relocate the main stack.
I am planning on making another 2x4 wall and attaching it to the current wall. The wall isn't very long - about 54".
How to attach it? What to attach the bottom plate to, besides the floor? There is no joist at this location.
I thought about scabbing on to the sides of the current studs with plywood, glue, and screws.
I plan on getting an inspection.