How do I Repair Scratched Glaze at the Water Line on a Toilet Below?

Written by steve sloane
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How do I Repair Scratched Glaze at the Water Line on a Toilet Below?
Scratched glaze in toilet bowls can lead to health hazards. (toy toilet image by Wayne Abraham from

Toilets are glazed at the factory so that no bacteria can grow in the toilet bowl. Toilets can get damaged or grazed by objects being dropped into the bowl, or toilet snakes being used to clear out blockages in the toilet or sewer line. It is important to reglaze the damaged area as soon as possible so that bacteria won't grow and cause health hazards. Water will be removed first from the bowl, so that the damage at or below the water line can be worked on. Spray enamel kits are easy to use and aren't time consuming.

Skill level:

Things you need

  • Pliers
  • Old towels
  • Toilet cleaner
  • Spray enamel kit
  • Small knife

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  1. 1

    Turn off the water to the toilet at the shut-off valve under the tank. Flush the toilet to remove as much water from the tank and bowl as possible. Unthread--by hand--the flexible water supply pipe attached to the bottom of the toilet tank. Loosen and remove the screws on each side of the toilet bowl base with pliers.

  2. 2

    Place old towels on the floor around the toilet. Remove the toilet, lifting it on its side to free all water from the toilet bowl. Clean inside the bowl and dry it thoroughly.

  3. 3

    Take the filler and hardener from the spray enamel kit and mix them together in the supplied tray--follow directions for the correct amounts of each. Apply the filler to the scratched/damaged area using a small knife. Wait one hour for it to dry.

  4. 4

    Sand the area using the kit's rough sandpaper. Then use the next roughest sandpaper, through to the finest (all sandpaper is supplied in the kit). Thoroughly clean away dust.

  5. 5

    Hold the kit's spray enamel 6 inches from the surface, and spray in waves from left to right--follow kit directions. Wait at least 48 hours for the enamel to dry.

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