Overflow Plate
Definition and meaning of Overflow Plate in real estate.
An overflow plate is a metal or plastic cover installed over the secondary drain opening near the upper rim of a bathtub or sink to prevent water from spilling onto the floor.
In more detail
This component houses a bypass channel that redirects excess water back into the main sewer pipe if the primary drain is closed and the water level rises too high. It often incorporates a lever that controls the tub drain stopper mechanism behind the tub wall.
Regular maintenance of the overflow plate and its gasket is important to prevent leaks behind the wall, which can cause structural rot. Home inspectors examine these plates during a routine home inspection to ensure they are secure and functioning.
Key facts
| Category | Property Types & Construction |
|---|---|
| Primary function | Prevents water damage from plumbing overflows |
| Located on | Bathtubs and deep sinks |
| Maintenance check | Inspect the backing gasket for deterioration |
While filling a bathtub, a resident gets distracted, but the rising water flows into the opening of the overflow plate instead of flooding the bathroom floor.
Frequently asked questions
Why is water leaking behind my tub when the tub is full?
This is often caused by a worn-out or misaligned rubber gasket behind the overflow plate, which allows water to seep behind the tub wall.
Can I replace an overflow plate myself?
Yes, replacing an overflow plate is a simple plumbing task that typically requires removing a couple of screws and installing a new plate and gasket.