To repair a chip in your bathtub, dry out, sand and clean the chipped area before applying a repair compound. You need some repair compound, a hairdryer, sandpaper, rubbing alcohol, clean tile, cotton swabs, a putty knife, a razor, alkaline paint and nail polish remover. It takes at least 12 hours to complete this project.
- Dry out the chipped area
Use your hairdryer to completely dry out the area around the chip. Make sure that there is no moisture left on the surface of the tub surrounding the chip. Excess water can cause the repair compound to lose its ability to stick.
- Sand and clean the area
Sand down the dry area with sandpaper until it has smooth edges. Try to focus only on the area near the chip so that you do not damage the rest of the porcelain. Dip your cotton swab in rubbing alcohol, and use it to clean off all of the porcelain that you have sanded. Allow this to dry.
- Apply the repair compound
Take your clean tile, and mix the repair compound and the alkaline paint on the tile surface. Stir this mixture, and try to get the coloring as close as possible to the rest of your bathtub. Then, using your putty knife, apply this mixture to the chipped area. Start in the center of the damage, and move to the edges until they are covered.
- Let the compound dry, and touch it up
Give the compound at least 12 hours to dry. Do not use the bathtub. After the compound has dried, use a cotton swab soaked in nail polish remover to blend the edges of the compound with the porcelain itself.