Oh it was an ordeal! We had no idea the shower was leaking until there was mold on the wall. I cut the drywall and it was like clay. The underlayment by the shower was so wet I could break it with my hands. Turns out the water was coming behind the wall. So aftet figuring out where the water was coming from, I sealed everything. I didn't care whether it looked nice or not. If it had an edge or a gap, it got caulked.