How to Finish Granite Countertops


You may think that once your granite countertops are installed, that’s it. Sure, the adhesive has to dry, but then they’re good to go…right? Wrong. There are a couple of processes necessary to finish your granite countertops so that they are completely safe and protected. The first part of finishing your countertops is to polish the edges so that they are not so sharp that they may cause injury. The second part is protecting your new countertops with a dose of masonry sealer.

Things You'll Need

  • Tarps
  • Work gloves
  • Paper mask
  • 150-grit, 300-grit, 500-grit, 800-grit, 1500-grit, and 3000-grit masonry polishing pads
  • Handheld stone polisher
  • Soft cloths
  • Towel
  • Topical masonry sealer
  • Lay tarps over the floor to catch as much dust as possible. Cover other kitchen surfaces with more tarps or newspaper. Protect your hands with thick work gloves and guard your nose and mouth with a paper mask so that you do not breathe in dust.

  • Place a 150-grit stone polishing pad into the handheld polisher. Rest the pad against the edge of the counter and push it forward with moderate pressure. Turn on the polisher and run the face of the pad over the edge of the countertop from end to end. Turn the polisher off and lift it away.

  • Remove the 150-grit pad from the polisher and install a 300-grit pad. Polish all of the countertop edges again. Use 500-grit, 800-grit, 1500-grit, and 3000-grit pads to polish the edges four more times.

  • Round the corners of the countertop as you polish, if you want this type of finish. Remember to exchange the polishing pads with new ones of the same grit if they become worn and the polishing appears uneven. Dampen a soft cloth and thoroughly wipe down the entire counter once you have finished.

  • Dry the counter with a towel or let it air dry overnight. Fold a soft cloth into a thick square and saturate the surface with topical masonry sealer. Rub the sealer over the granite countertop, without skipping any areas; use a clean cloth to dab away any surplus sealer and let the granite dry 24 hours before using the countertop.

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  • Photo Credit Modern elegant kitchen image by MAXFX from
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