Symptoms
- Water or stain appears on the wall or floor near the overflow plate
- Leak worse during or right after a bath
- Plate may look loose or slightly crooked
- No leak from the drain itself, just around the overflow
Likely causes
- CommonWorn gasket behind the overflow plateThis gasket seals the connection to the overflow pipe and degrades with age.
- CommonLoose mounting screws on the overflow plateScrews can back out slightly over time, breaking the gasket's seal.
- PossibleCorroded or cracked overflow pipe fitting behind the wallA more involved repair if the pipe itself is compromised.
- PossibleTrip-lever linkage assembly not seated correctlyCan indirectly affect how well the plate and gasket seal.
What to do
- Remove the two screws holding the overflow plate and gently pull out the plate along with its linkage assembly.
- Inspect the gasket behind the plate for cracking, flattening, or visible gaps.
- Clean the mounting surface of any old gasket material or debris.
- Install a new gasket sized to match the original, ensuring it seats evenly around the opening.
- Reinsert the plate and linkage assembly, then tighten the screws evenly, avoiding overtightening which can crack the plate.
- Fill the tub partway and let it sit for several minutes, watching the plate area closely for any leaking.
- If it still leaks and everything is properly seated, the pipe fitting behind the wall may need a plumber's attention.
Tools and parts
- Screwdriver
- Flashlight
Tub overflow gasketSearch: “bathtub overflow gasket replacement”
When to call a pro
Call a plumber if replacing the gasket doesn't stop the leak, since the pipe fitting behind the wall may need repair.
Safety
Generally low risk
Generally low risk for a careful person. Stop if anything looks different from what this guide describes.