Can You Wet Sand Quartz Countertops?

Quartz countertops are a popular choice for many homeowners due to their durability, low maintenance, and stylish appearance. However, like any surface, quartz can develop scratches, etching, and dull spots over time. This leads many quartz owners to wonder – can you wet sand quartz countertops to restore their original beauty? The short answer is yes, wet sanding is an effective way to refresh quartz surfaces. However, there are some important factors to consider before attempting to wet sand quartz in your home.

What is Wet Sanding for Quartz Countertops?

Wet sanding is a process of smoothing and polishing a surface using water and progressively finer grit sandpaper. When wet sanding quartz:

  • Water is used to lubricate the sandpaper and keep dust minimized.
  • Start with a low grit sandpaper (400-600) to smooth scratches and etching.
  • Progressively use finer grits (800-3000) to refine the surface.
  • Finish by polishing with a buffing compound to restore the glossy finish.

Wet sanding removes a thin layer of the quartz material to eliminate damage and renew the surface luster. Unlike other materials, quartz countertops can be wet sanded multiple times without concern of thinning the material excessively.

Benefits of Wet Sanding Quartz

Wet sanding offers several advantages for refreshing worn quartz countertops:

  • Removes Scratches and Etching: Sanding eliminates minor scratches, clouding, and etching that accumulate from daily use. This revives the smooth appearance.
  • Restores Shine: Polishing and buffing brings back the original glossy finish of quartz. It can recover the showroom shine.
  • Levels Uneven Spots: Wet sanding can even out dull spots and minor stains that may develop over time. This returns an uniform look.
  • Avoids Replacement: Light wet sanding restores quartz instead of a full replacement, saving time and money.
  • DIY Friendly: With proper supplies and techniques, wet sanding quartz can potentially be a DIY project for some homeowners.

Step-by-Step Process for Wet Sanding

Wet sanding quartz requires careful attention to detail. Here is a general step-by-step process:

Supplies Needed

  • 400, 800, 1500 & 3000 grit wet/dry sandpaper
  • Variable speed polisher/sander
  • Soft buffing pad and buffing compound
  • Spray bottle with water
  • Clean cloths


  1. Clean the countertop thoroughly before sanding. Remove any debris or residue.
  2. Apply water liberally and begin sanding with 400 grit in a circular motion across the surface. Sand until scratches and etching are gone.
  3. Wipe away grit and dust between sanding with different grits. Allow to fully dry.
  4. Move to 800 grit and repeat sanding process. Follow with 1500 and 3000 grit.
  5. Attach a soft buffing pad to the polisher. Apply a thin coat of buffing compound and polish on low speed to restore shine.
  6. Wipe away any excess compound and enjoy the refreshed quartz surface!

Professional vs. DIY Wet Sanding

While wet sanding quartz countertops is possible as a DIY project, there are some benefits to hiring a professional:

  • Experience: Professionals have the skills and knowledge to properly wet sand and polish quartz.
  • Specialized Equipment: Pros have commercial grade tools that make the job easier.
  • Limits Damage: Hiring a pro reduces the risk of sanding too aggressively and damaging the surface.
  • Efficient: Professionals can complete the job quicker with better results.
  • Warranty: Some companies may void warranties if they determine DIY sanding caused damage.

If you opt for professional help, be sure to hire an experienced quartz fabricator or countertop refinishing company. Get quotes from 2-3 pros before selecting one.

FAQs About Wet Sanding Quartz

Can all quartz be wet sanded?

Most quartz can be wet sanded, but darker colors and agglomerate styles may show scratches more easily. Ask the fabricator if unsure about a specific brand or color.

Will it look the same as a new install?

Wet sanding can dramatically improve the appearance of worn quartz but may not look identical to a brand new installation. The process should significantly diminish defects.

How long does it take?

A DIY wet sanding project could take 2-4 hours for an average sized countertop. Professionals with industrial tools may only require 1-2 hours.

How often can you wet sand?

Quartz can typically be wet sanded every 3-5 years as needed. Aggressive sanding each time should be avoided as it can thin the material over time.

Does it need to be resealed afterwards?

Resealing is not necessary after wet sanding quartz countertops. The process removes a layer of the solid material so no topical sealants are required.

Maintain Quartz Counters Between Sanding

To maximize the time between wet sanding quartz surfaces:

  • Use cutting boards to avoid direct knife contact.
  • Clean spills quickly to prevent etching.
  • Avoid abrasive cleaners or scouring pads.
  • Apply a granite or quartz sealer 1-2 times per year.
  • Don’t place hot pans directly on the surface.


Wet sanding and polishing is an effective way to refresh quartz countertops showing signs of wear after years of use. While DIY wet sanding is possible with care, hiring a professional often yields the best results. With a few supplies and some elbow grease, you can restore the beautiful, flawless look of quartz counters. Be sure to properly prep and research techniques before attempting to wet sand quartz surfaces in your home’s kitchen or bathrooms.