The waste and overflow assembly in your bathtub is a crucial component that allows water to drain properly. Over time, it may become worn or damaged, leading to leaks and drainage issues. In this blog, we will provide you with a step-by-step guide on how to change out a bathtub waste and overflow, ensuring your bathtub functions smoothly.

1. Gather the Necessary Tools

Before you start the process, gather all the necessary tools and materials. You’ll need a drain wrench, pliers, screwdriver, plumber’s putty, silicone caulk, and a new waste and overflow assembly.

2. Access the Drain

Remove the bathtub drain cover by unscrewing it counterclockwise. Once the cover is off, use the drain wrench to unscrew the old waste and overflow assembly from the bathtub drain. Be cautious not to damage the bathtub surface during this step.

3. Detach the Overflow Plate

Locate the overflow plate on the side of the bathtub and remove the screws holding it in place. Once the screws are removed, gently pull the overflow plate away from the tub.

4. Remove the Old Assembly

With the overflow plate removed, you can now access the waste and overflow assembly from inside the tub. Detach any remaining screws or nuts holding the assembly in place. Carefully pull the old assembly out from the bathtub drain and overflow opening.

5. Install the New Assembly

Insert the new waste and overflow assembly into the bathtub drain and overflow opening. Secure it in place by tightening the screws or nuts. Apply plumber’s putty around the bathtub drain opening to create a watertight seal.

6. Attach the Overflow Plate

Place the new overflow plate over the overflow opening and secure it in place with the screws provided. Ensure it fits snugly against the bathtub surface.

7. Test for Leaks

Turn on the bathtub faucet and fill the tub with water. Check for any signs of leaks around the waste and overflow assembly and the overflow plate. If there are no leaks, you’ve successfully changed out the bathtub waste and overflow.


Changing out a bathtub waste and overflow is a task that can be accomplished with the right tools and attention to detail. By following this step-by-step guide, you can ensure your bathtub drains properly and avoid any potential water damage caused by leaks. If you’re unsure about performing this task yourself, don’t hesitate to seek the help of a professional plumber.