Install the Overflow Assembly — Reinstall the Cover Plate
Part of project
How to Replace a Bathtub Overflow Drain Gasket · Step 6 of 9
In this video
Start by installing the overflow. From the outside of the bathtub, push the overflow body's brass spindle through the overflow hole. Ensure the integrated washer sits flush against the exterior bath wall. From inside the tub, place the overflow face over the spindle. Insert the control knob sleeve and tighten the wing nut to secure the assembly. Place the control knob onto the sleeve, ensure it is centered, and then secure it by tightening the small screw with a screwdriver.
Goal: Secure the overflow unit to the bathtub
- Ensure the overflow is central and level before fully tightening the screw.
Used in this video
- Screwdriver — To tighten the retaining screw that holds the control knob in place.
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FAQs
Why is the estimated time for this 'beginner' project so long, and what if I don't need to cut open a wall?
The 6-hour estimate includes the potential need to cut and repair a drywall access panel, which is the most time-consuming part of the project. If your overflow drain is accessible from behind (e.g., through an existing access panel or an unfinished basement/crawl space), or if you can replace the gasket without needing wall access, the project can often be completed in under an hour.
Do I really need all the specialized drywall tools listed if I only plan to replace the gasket?
No, if you can access the overflow gasket without cutting into drywall, you primarily need a screwdriver, rags, cleaning solution, safety glasses, and the new gasket. Tools like the jab saw, joint knife, and sanding sponge are only required if you need to create and repair a drywall access panel to access the overflow plumbing behind the tub.
What are common reasons the overflow might still leak even after replacing the gasket?
A leak might persist if the overflow pipe itself is cracked or loosely connected to the tub, the new gasket isn't seated perfectly flush, or the metal flange around the overflow opening inside the tub is corroded or damaged. Always ensure all contact surfaces are thoroughly cleaned and smooth before installing the new gasket for a watertight seal.
What are the most important safety precautions I should take when replacing the overflow drain gasket?
Always wear safety glasses to protect your eyes from debris and cleaning solutions. If you need to cut into drywall, use a dust mask to avoid inhaling fine particles and a stud finder to prevent cutting into pipes or electrical wires. Ensure the tub is completely drained before starting, and if possible, turn off the main water supply to prevent accidental water damage.
Install the Overflow Assembly — Reinstall the Cover Plate
Part of project
How to Replace a Bathtub Overflow Drain Gasket · Step 6 of 9
In this video
Start by installing the overflow. From the outside of the bathtub, push the overflow body's brass spindle through the overflow hole. Ensure the integrated washer sits flush against the exterior bath wall. From inside the tub, place the overflow face over the spindle. Insert the control knob sleeve and tighten the wing nut to secure the assembly. Place the control knob onto the sleeve, ensure it is centered, and then secure it by tightening the small screw with a screwdriver.
Goal: Secure the overflow unit to the bathtub
- Ensure the overflow is central and level before fully tightening the screw.
Used in this video
- Screwdriver — To tighten the retaining screw that holds the control knob in place.
Frequently Asked Questions
Why is the estimated time for this 'beginner' project so long, and what if I don't need to cut open a wall?
The 6-hour estimate includes the potential need to cut and repair a drywall access panel, which is the most time-consuming part of the project. If your overflow drain is accessible from behind (e.g., through an existing access panel or an unfinished basement/crawl space), or if you can replace the gasket without needing wall access, the project can often be completed in under an hour.
Do I really need all the specialized drywall tools listed if I only plan to replace the gasket?
No, if you can access the overflow gasket without cutting into drywall, you primarily need a screwdriver, rags, cleaning solution, safety glasses, and the new gasket. Tools like the jab saw, joint knife, and sanding sponge are only required if you need to create and repair a drywall access panel to access the overflow plumbing behind the tub.
What are common reasons the overflow might still leak even after replacing the gasket?
A leak might persist if the overflow pipe itself is cracked or loosely connected to the tub, the new gasket isn't seated perfectly flush, or the metal flange around the overflow opening inside the tub is corroded or damaged. Always ensure all contact surfaces are thoroughly cleaned and smooth before installing the new gasket for a watertight seal.
What are the most important safety precautions I should take when replacing the overflow drain gasket?
Always wear safety glasses to protect your eyes from debris and cleaning solutions. If you need to cut into drywall, use a dust mask to avoid inhaling fine particles and a stud finder to prevent cutting into pipes or electrical wires. Ensure the tub is completely drained before starting, and if possible, turn off the main water supply to prevent accidental water damage.