I am trying to help a friend during his lower level bathroom remodel. The bathroom right above rains when the shower is run.
I ran the tub for a while and no water leaked down. I have the ceiling below open so I can see the entire drain (which is all new abs).
Now the "diverter" for the tub/shower is simply a pull-up control on the tub spout that blocks off the spout. My concern is that it (the tub spout) isn't threaded onto the pipe from the wall but rather just slipped on and then held in the back with a set screw.
I was thinking that maybe water is working it's way back down the pipe when the stop is pulled up?
Any thoughts or advice. I went and picked up a version of the tubspout that threads on, thinking I can solder a male thread to the pipe stub and cap it off. Then if it continues to leak I think it is either in the shower head fitting or at the valve somewhere.