Ceramic tile is known for its crisp look, ease of cleaning and durability. Despite this seemingly perfect reputation, accidents do happen, and sometimes ceramic tile becomes chipped. It is not necessary to go to the trouble of entirely replacing chipped ceramic tile, however. With patience and a steady hand, it is possible to patch the damaged areas and return your tile to its original, flawless appearance.
Wash the damaged areas of the tiles with soap, water and a clean rag. Rinse the tiles with water and wipe away the excess water with a clean, dry rag. Since exposed tile is capable of retaining a lot of water, dry the damaged areas with a hair dryer for approximately 15 minutes.
With a small paintbrush, apply a thin coat of primer to the chipped portions of the tiles. Be careful not to get primer on the undamaged, glazed portions of the tile. The primer layer should be smooth and encompass the full area of the chips. Let the primer dry for approximately 2 hours.
Paint the chipped areas with a high-gloss paint colour that matches the rest of your tile. A paint store should be able to match the colour easily if you have any extra, unused tiles to provide as a reference. Use a small paint brush to apply the paint in the same manner you applied the primer, taking care to avoid the undamaged portions of tile. Allow the paint to dry for at least 24 hours. It may be necessary to apply a second coat of paint to achieve full coverage.
Squeeze equal amount of both parts of the marine epoxy onto a piece of spare cardboard. Mix the epoxy with a toothpick. Using the toothpick, apply enough epoxy to the painted portions of the tiles to fill in the chips to the height of the undamaged areas. Allow the epoxy to set undisturbed for 24 to 48 hours.