How to Repair a Cultured Marble Countertop


Repairing a cultured marble countertop can be done fairly easily if you have the patience and the time to allow everything to dry properly. Small repairs should be no problem for the average homeowner, but a professional should examine larger damage in the cultured marble.

Things You'll Need

  • Medium grit sandpaper
  • Sponge
  • Primer
  • Spray stone finish
  • Polymer resin
  • Small paint roller
  • Painter’s tape
  • Disposable cups
  • Small paint spreader
  • Clean the marble countertop thoroughly with a dampened sponge.

  • Use medium grit sandpaper to sand the marble countertop. Sand down into the damaged areas, but do not sand them down to the level of the rest of the countertop. Wipe the marble with the dampened sponge again to remove the dust from sanding.

  • Tape along the edges of the countertop with painter’s tape. If there is a sink in the countertop, tape around the inside edge of the sink. This is to protect surfaces adjacent to the marble.

  • Apply a layer of primer to the countertop using the small paint roller, ensuring that the entire countertop is covered. Allow the primer to dry according to the manufacturer’s directions. This time may vary between manufacturers.

  • Spray a coat of stone finish on the countertop, evenly and thoroughly. Fill in any indentations or chipped areas by spraying a little extra stone finish into them. Allow the finish to dry completely according to the manufacturer's instructions.

  • Put some polymer resin in a disposable cup, then pour it onto the countertop, beginning at one side and working toward the other. Use the paint spreader to catch drips and push the polymer resin back from the edges of the countertop. Apply a generous layer of the polymer resin to the entire countertop and allow it to dry for the amount of time that the manufacturer recommends.

  • Buff the countertop with a dampened sponge to obtain a high polish, damage-free shine.

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