Repairing a Chip in a Porcelain Sink

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Dropped tools or sharp impacts from dishes can leave chips in a porcelain sink, marring its clean finish and detracting from the look of your bathroom or kitchen. While replacing the sink serves as an effective way to get rid of chips in the porcelain finish, it also comes with plenty of mess and a not-so-insignificant price tag. Instead, restore your sink with simple repairs designed to hide unsightly chips and return your bathroom or kitchen to its former glory.

Things You'll Need

  • Bathroom cleaner
  • Rag
  • 220-grit sandpaper
  • Denatured alcohol
  • Toothpick
  • Porcelain filler kit
  • Putty knife
  • 400-to-600-grit sandpaper
  • Razor blade
  • Clean the sink using your regular bathroom or kitchen cleaner then dry the surface using a clean rag.

  • Sand the inside and edges of the chip using 220-grit sandpaper. Work carefully to avoid sanding the surrounding porcelain.

  • Wipe the chip and surrounding area with a soft rag dipped in denatured alcohol to remove sanding dust. Dry the area before proceeding.

  • Mix a small amount of porcelain filler from your porcelain sink repair kit on a scrap of cardboard. Check the color of the filler once you mix it to see if it matches your sink. You may need to purchase multiple kits in a couple of colors to create the right color blend to match your sink. When you think you have the right color, allow it to dry on the cardboard to confirm that the mixed color closely matches your sink.

  • Blend the porcelain filler to create your desired color then apply to the chipped area using a toothpick. Use a putty knife if the chip is large. Apply the filler in thin layers, allowing each to dry, then sanding with 400-to-600-grit sandpaper before applying the next layer. It may take four hours or more for each layer to dry completely. Refer to the instructions that come with your porcelain filler to determine appropriate drying time.

  • Use a razor blade to remove any excess filler from your final layer by gently rubbing it across the repaired surface.

  • Give the repaired area a final sanding after it dries using 400-to-600-grit sandpaper, then wipe with a soft rag to remove sanding dust.

  • Apply a thin layer of porcelain surface glaze from your repair kit. Wait at least an hour for the layer to dry then add an additional fine layer and allow it to dry. Continue to add thin layers of glaze until the repaired area is even and level with the surrounding surface. Lightly sand the edges of the chipped area once the glaze is dry to help it blend into the surrounding surface.

Tips & Warnings

  • Contact your sink manufacturer for repair kits to find an exact color match for your sink.
  • Wait a week before cleaning the repaired sink to avoid disturbing the patched section.

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References

  • Photo Credit Martin Poole/Photodisc/Getty Images
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