How to Repair a Quartz Countertop

Quartz countertops are a popular choice for kitchens and bathrooms because of their durability, style, and low maintenance. However, like any surface, quartz can become damaged over time. Small chips, cracks, and stains are repairable, often without replacing the entire countertop. With the right materials and techniques, you can repair quartz and restore its flawless appearance.

Assessing the Damage

The first step is to thoroughly examine the quartz to determine the type and extent of damage.

  • Small chips and cracks under 1/4 inch can often be repaired. Use a ruler to measure the size of any chips or cracks.
  • Identify any stains and discoloration. Determine if the stains are surface-level or penetrated deeper into the stone.
  • Look for signs of more serious structural damage like large cracks, loose areas, or cracks/chips near seams and edges. This type of damage may require total quartz replacement.

Cleaning Before Repairing

Thoroughly clean the damaged area and surrounding countertop before attempting any repairs.

  • Use a non-abrasive cleaner specifically formulated for stone surfaces.
  • For stains, try a poultice or stain remover made for quartz.
  • Avoid abrasive scrubbing pads or powders that could worsen scratches.
  • Completely dry the surface when finished cleaning.

Proper cleaning will remove dirt, grime, and oils that could interfere with adhesion of repair materials.

Repairing Small Chips and Cracks

Minor chips and cracks in quartz can often be repaired with a color-matched putty:

  • Purchase a putty stick or kneadable epoxy putty made specifically for quartz repair. Choose a color that matches your countertop.
  • Fill in the damaged spot just slightly over the top, smoothing with a putty knife.
  • Once dry per package directions, sand flush with the surrounding countertop using 400 grit sandpaper.
  • Clean and buff repaired area with a soft cloth.

The repaired chip or crack should now be barely noticeable. Larger cracks may require multiple applications of putty for best results.

Fixing Surface Stains and Scratches

Many stains and light scratches on quartz can be removed by sanding and polishing:

  • Try an initial gentle buffing with 0000 steel wool. For deeper stains, use 400 grit sandpaper.
  • Sand in a circular motion, applying even pressure. Be careful not to remove too much surface material.
  • Once the stain is removed, clean the sanded area. Use increasingly finer grit sandpaper, up to 4000 grit, to blend and restore polish.
  • Buff with a quartz polishing compound or ceramic cooktop polish for final shine.

This process can eliminate many stains without changing the appearance of the quartz. Contact a professional if stains persist.

Sealing Chips and Cracks

For larger chips and cracks that cannot be filled, a clear resin can help seal and prevent further damage:

  • Clean out any dirt and debris from the crack using compressed air, a vacuum, or denatured alcohol.
  • Fill the crack with a transparent epoxy or polyester resin designed for quartz countertops. Slowly pour, allowing capillary action to pull resin in.
  • Remove any excess resin with a plastic scraper before hardening. Avoid wiping, which can leave a sticky film.
  • Once resin has fully cured, buff with 0000 steel wool followed by a buffing compound.

Though not invisible, sealing stabilizes cracks against moisture and debris entering. Monitor cracks frequently to ensure effectiveness.

When to Call a Professional

In some cases, it may be best to have quartz countertop repairs done professionally:

  • For damage near edges, seams, or sinks that impact structural stability.
  • If the quartz has complex patterns or uneven coloring that will be hard to match.
  • For repairs needed in difficult to access areas.
  • If you want an absolute seamless, invisible repair, as DIY often leaves some signs.
  • When unsure about the stain or damage type. A pro can best identify options.
  • If damage covers a very large area that requires a full resurface.

Though DIY repairs are possible in many cases, don’t hesitate to call a professional granite and quartz installer for expert repairs that will leave your countertop looking like new.

FAQ About Repairing Quartz Countertops

Should I use epoxy or resin to repair a quartz countertop?

For minor chips, cracks, and pits, use a color-matched quartz putty epoxy designed specifically for countertop repairs. For sealing larger cracks, opt for a clear quartz repair resin to fill in and stabilize the crack.

What homemade solutions can remove stains from quartz?

Mixing baking soda and hydrogen peroxide into a paste can help lift some stubborn stains. Lightly spread on the stain, allow to sit for 15 minutes, then rinse. Avoid abrasive cleaners like lemon juice or vinegar.

Is it possible to polish out etching and scratches from a quartz countertop?

Light scratches can often be sanded and polished away. Use fine grit sandpaper (400-4000) and quartz polishing compound. Deeper etching may require a pro resurface.

How long does quartz countertop repair resin take to cure?

Most quartz repair resins cure fully within 24 hours. Avoid any water or cleaning during this time. Follow all manufacturer cure time instructions.

Can I repair quartz myself or do I need a professional?

Small chips, cracks, and stains can often be repaired DIY with the right materials. But extensive damage or repairs needed underneath may require a professional installation.


Regular cleaning and prompt repair of any damage is key to maintaining beautiful quartz countertops. With some basic DIY techniques and quality repair products, many chips, cracks, stains, and scratches on quartz can be fixed to restore its original factory finish. Pay attention to preventative care and handling quartz with care to limit future repairs needed.