Leak in master bathroom ceiling above shower. Filled tub upstairs and heard dripping soon as we pulled the drain. Informed customer we would need to cut a hole in the ceiling. Found copper u trap in ceiling that was leaking from a join and old fernco. Gave customer estimate to replace copper drain with pvc ptrap. Customer approved estimate. Installed new pvc fittings and ptrap. Tested system, system is draining with no leaks or issues.