How to Grind Down Quartz Countertops

Quartz countertops are an increasingly popular option for home kitchens and bathrooms. Made from engineered stone, they are nonporous, stain-resistant, and durable. However, like any other countertop material, quartz can become damaged over time. Grinding and polishing are effective ways to repair superficial scratches, etching, and dulling on quartz surfaces. With the right tools and techniques, you can refresh your quartz countertops to look like new again.

What You’ll Need

  • Safety gear – goggles, mask, ear protection
  • Variable speed grinder
  • Diamond abrasive pads – 50 grit, 200 grit, 400 grit, 800 grit
  • Water supply – spray bottle or hose
  • Polishing compound and buffing pad

Step 1: Clean the Countertop

Thoroughly clean the countertop with a stone-safe cleaner or mild dish soap and water. This will remove any dirt or residue that could interfere with grinding and polishing. Make sure the surface is completely dry before moving on.

Step 2: Mark Damaged Areas

Inspect the countertop closely and use a pencil to mark any deeper scratches, chips, or etching that need extra attention. Focusing on these spots will improve efficiency.

Step 3: Start Grinding with 50 Grit

Attach a 50 grit diamond abrasive pad to your grinder. Hold the grinder flat at a 5-10 degree angle and gently grind the marked areas using sweeping motions from multiple directions. Apply light pressure and keep the pad constantly moving. Be patient and make several passes over damaged spots.

Step 4: Remove Scratches with 200 Grit

Once deep scratches are improved, switch to a 200 grit pad. Continue grinding over the whole surface using sweeping motions from different angles. Check your progress frequently. Remove the 200 grit once the countertop has a uniform appearance.

Step 5: Reduce Haze with 400 Grit

Attach the 400 grit pad and repeat grinding over the entire countertop. This finer pad will begin to restore the original polished look. Grind until any haze from previous grits has been eliminated.

Step 6: Refine with 800 Grit

For a smooth, glass-like finish, continue grinding with an 800 grit pad using light pressure. Work in small sections until the entire surface has a consistent honed appearance. Remove any remaining swirling or imperfections.

Step 7: Rinse and Dry

Thoroughly rinse the countertop with clean water to remove all grinding residue. Allow the surface to dry completely. Inspect it under lighting to ensure the finish is uniform. Repeat steps as needed to blend any uneven areas.

Step 8: Polish to Finish

Apply a marble polishing compound to a buffing pad and polish the entire countertop. Work in wide overlapping circles until you achieve the desired level of shine. Remove any remaining haze with a soft, clean cloth.

Tips for Grinding Quartz Countertops

  • Always keep pads wet while grinding to prevent overheating
  • Change pads frequently as they wear down
  • Rinse and dry between grits to inspect progress
  • Avoid applying too much pressure which can damage the surface
  • Work in good lighting to see the countertop clearly
  • Be prepared for a dusty process and protect nearby surfaces
  • Consider professional help for severely damaged countertops

FAQs about Grinding Quartz Countertops

Is it possible to grind quartz countertops yourself?

Yes, with the right tools and patience, grinding and polishing quartz countertops is a DIY-friendly process. The key is using a variable speed grinder and diamond abrasive pads in progressively finer grits. Always start with heavy grits to repair damage before polishing.

What causes dull spots and scratches on quartz?

Common causes of surface damage include cuts from knives, abrasive cleaners, drops or drags of heavy objects, and heat. Quartz is very hard but not completely invincible against daily wear and tear.

How often should I grind my quartz countertops?

It depends on use, but every 2-5 years is recommended for a thorough grinding and polishing to keep quartz looking its best. You may need to do spot repairs more frequently if your countertops see a lot of use.

Should I seal my quartz countertop after grinding?

No, quartz does not need to be sealed. In fact, sealers can build up on the surface over time and create a hazy appearance. Simply polish well after the final grit pad for a beautiful finish.

Is it better to replace or grind quartz countertops?

Grinding and polishing are much cheaper alternatives to replacing damaged quartz countertops. Unless there is deep damage or you want to change colors or patterns, resurfacing your existing quartz is highly recommended.


With some time and effort, you can successfully grind out scratches, dull spots, and light stains from your quartz countertops. By starting with lower grit diamond pads and gradually working your way to finer polishing pads, you can restore the original factory finish. Be sure to work carefully and patiently for best results. Grinding quartz yourself can save thousands of dollars compared to replacement.