How to Restore a Scratched Cultured-Marble Sink

Cultured-marble sinks provide the look of natural marble without the extra cost and hassle. Cultured marble is a made up of ground marble and other natural stones, mixed and coated with resins and polymers. Cultured-marble sinks are susceptible to scratches and cracks, but it's possible to fix minor to moderate scratches at home. If the scratches are deeper than the outer gel-coat, the home polishing process may not work and you will need to call a professional.

Automotive finishing compound
Soft cloths
High-speed buffer
Wool buffing pad
Sandpaper, 800-grit
Gel-coat polishing wax

Instructions

- 1
  Apply an even layer of automotive finishing compound to the sink with a dry cloth.
- 2
  Rub the scratched sink in small, circular motions with the cloth. Allow the compound to dry to a haze.
- 3
  Fit a high-speed buffer with a soft wool pad, then buff the cultured-marble sink to a shine.
- 4
  Apply a thin, even layer of finishing compound to the scratched sink with a soft cloth if scratches remain.
- 5
  Dampen a piece of 800-grit sandpaper with water and polish away any scratches by hand. Rub across the scratches in small, circular motions.
- 6
  Rinse the cultured-marble sink with water and wipe it dry with a cloth.
- 7
  Apply a thin, even layer of finishing compound to the cultured marble sink. Allow it to dry to a haze, then polish the sink with the high-speed buffer fitted with a wool pad.
- 8
  Apply a thin layer of gel-coat polishing wax to the cultured-marble sink. Allow it to dry to a haze before buffing it away with a soft cloth.

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