Why is my shower leaking into downstairs?
Damaged O-rings, washers, or gaskets are usually to blame. When hair, soap, and other debris clog a shower drain, the water can't go down the drain. If the tub or pan overflows, it could leak through the ceiling below. Over time, the rubber gasket under the shower drain can dry out, crack, and leak. How do I find out where my shower is leaking from? The main signs to look for are dampness on walls, on the floor, or the ceiling, and a musty odor in the bathroom, even when not in use.