Can a Bathroom Leak Affect the Unit Below?

Water does not always stay on the visible bathroom surface. It can move through the substrate, floor system, plumbing paths, and adjacent walls.

Once the lower unit shows ceiling stains, peeling paint, mold, or odor, the problem can expand beyond repair into communication, building management, and liability issues.

The earlier the leak source is identified, the easier it is to keep the repair small. The longer it continues, the more likely it becomes a larger and more expensive problem.