How to Disable a Bathtub Overflow

Although not recommended for in-home use as a bathtub, a bathtub drain overflow can be disabled. A tub being used outside as an animal watering device or in other outside applications can have the overflow drain disabled without worries about code violations. If the tub is to be used to hold liquid, be certain that you fill the hole with only waterproof materials.

Screwdriver
Fiberglass insulation
Two-part epoxy resin
Putty knife

Instructions

- 1
  Use a screwdriver to remove the screws on the drain cover plate.
- 2
  Clean the drain hole underneath the cover plate, using a scrub pad and a mild cleanser, if necessary. Mold and mildew should be removed as well.
- 3
  Stuff a handful of fiberglass insulation into the drain hole so that it is filled. Wear gloves while working with the insulation.
- 4
  Mix up a small batch of two part epoxy resin according to the instructions and use a putty knife or small trowel to cover the fiberglass insulation-filled hole.
- 5
  Allow the first application to dry and then apply other coats as needed to fill the hole.
- 6
  Let the epoxy cure thoroughly.
- 7
  Sand the epoxy with 80-grit sandpaper until it is flush with the tub.
- 8
  Wipe away any sanding dust and reattach the cover plate with the screws.

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