How to Repair Cracks in a Porcelain Sink

Written by monica sethi datta
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Porcelain is a hard, nonporous material that comes in many colours, making it a useful choice for sinks. Although a porcelain sink adds beauty to your bathroom, it also can be chipped or cracked if hard objects are dropped on it. A crack is not permanent, however; it can be repaired.

Skill level:
Moderately Easy

Things you need

  • Nonabrasive cleanser
  • Soft cloth
  • Medium-grit sandpaper
  • Rubbing alcohol
  • Cotton swab
  • Epoxy solution
  • Toothpick or small brush
  • High-gloss, alkyd-based paint
  • Razor blade

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  1. 1

    Wash the sink using a nonabrasive cleanser or mild soap. Rub a soft cloth over the cleanser to remove any residue on the sink. Rinse the sink and let it dry thoroughly.

  2. 2

    Sand the cracked area with medium-grit sandpaper until the damaged spot is smooth. Sand only the area that is cracked so you don't scratch the surrounding porcelain.

  3. 3

    Wipe the sanding debris off with a cotton swab dampened with rubbing alcohol. Dry the area completely with a soft cloth.

  4. 4

    Mix the epoxy repair solution, following the package directions. Fill the crack in your porcelain sink using a toothpick or small brush, based on the size of the crack.

  5. 5

    Let the epoxy solution dry for at least 24 hours. Do not use the sink while the solution is drying.

  6. 6

    Remove any excess dried epoxy with a razor blade so the sink's surface is uniform.

  7. 7

    Apply a high-gloss, alkyd-based paint matching your sink colour to the area you repaired. Let the paint dry for 48 hours before using the sink.

Tips and warnings

  • Keep the location of the crack or chip dry. If the crack stays wet, the repair is not likely to hold up.

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