How To Renew A Scratched Countertop

Make cultured marble shine again, Micalline invented cultured marble and perfected cultured marble showers, baths, and vanities. With over 50 years of experience in the production and installation of cultured marble and over 20 years of experience in the fabrication and installation of granite, marble, quartz, and other solid surfaces, we are ready to help you realize your dreams. Let’s renew a Scratched Countertop.


Renew your bathroom vanity. Make a scratched, dull-looking cultured marble top look shiny again with an auto polisher and special cleaners and polish—and save the cost of replacement.


  • Buffer/polisher
  • Cultured marble polish
  • Medium-cut cleaner
  • Sandpaper


I was disappointed by how quickly my cultured marble countertop lost its shine, so one day I took out my auto polisher and went at it. What a difference. Cultured tops are made of polyester resin with a clear topcoat (called the gel coat). This is the same material that’s used with fiberglass, and it buffs out beautifully. Removing the faucet makes it easier to buff the top.


First, wet-sand with 1,000-grit paper (available at auto parts stores) to remove small, shallow scratches and surface stains. Don’t try to remove deep scratches or deep stains. You’ll risk sanding right through the gel coat. Rinse and dry the top.


Next, buff with Micalline or similar polishing compound (also available at auto parts stores). Cover the walls and floor before buffing. The buffing can be done by hand, but a small power buffer is much easier.


Finally, protect the restored finish with a coat of cultured marble polish (available at home centers and bath specialty stores). Follow the label directions.
You may think some home repairs are out of your league, but even beginner DIYers can handle many of these fixes—and save a lot of money in the process!

Disclosure: This post is brought to you by The Micalline, who aims to highlight products and services you might find interesting. If you buy them, we get a small share of the revenue from the sale from our commerce partners. We frequently receive products free of charge from manufacturers to test. This does not drive our decision as to whether a product is featured or recommended. We welcome your feedback. Have something you think we should know about? Contact us, here.

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