Replacement overflow gaskets can be purchased at a hardware store or local home improvement store.
- Use a utility knife or scraping tool to remove any existing caulking from around the edge of the overflow cover plate.
- Remove the overflow cover plate with a screw driver.
- Locate the old overflow gasket. If it is fairly intact remove with your fingers or a pair of pliers. If the gasket is too compressed you can scrape it off with a screw driver or scraping tool.
It is okay if bits of the old gasket fall behind the tub as you are scraping it off.
- Install the new overflow gasket by centering it in the overflow opening. Sometimes it is necessary to gently push back on the overflow pipe to get the gasket into position.
- Screw the overflow trim plate back into position tightly enough to feel the gasket squeeze into position.
- Finish by caulking around the top half of the overflow plate to help prevent future leaks and keep the trim looking nice.