A tub can hold water at a low level without leaking and still leak when the water reaches its overflow opening. The overflow connects to the tub drain assembly, and a worn gasket or loose connection can let water escape behind the tub. A leak that happens as soon as the tub drains points to another part of the assembly.
Record the water level when the leak appeared
Note whether the leak followed a deep bath, shower spray, or draining the tub. Photograph staining on an adjoining wall or the ceiling below. Avoid filling the tub again to test a leak that has already reached finished surfaces.
Give the plumber a way to reach the assembly
Tell the plumber whether there is an access panel on the other side of the tub. They can inspect the overflow, waste connection, and nearby supply piping before deciding how much access is needed.
Learn more about our home plumbing service.