How to Repair Chips in Quartz Countertops

Quartz countertops are durable, but chips and cracks can still occur over time. Repairing quartz countertop chips may seem daunting, but it can be done with the right materials and techniques. Here is a step-by-step guide on how to repair chips in quartz countertops.

Assessing the Damage

The first step is to assess the chip or crack and determine the best repair method.

  • Small chips less than 1/4 inch wide can often be repaired with a coloring kit. This involves filling the chip with a colored putty that matches the countertop.
  • Larger chips wider than 1/4 inch may require a more involved patch repair. This involves cutting out the damaged section and replacing it with new quartz material.
  • Cracks need to be evaluated to determine if they are surface cracks or structural cracks. Surface cracks may be repairable, while structural cracks indicate a weakened countertop that may need replacement.

No matter the size or type of damage, thoroughly clean and dry the area before attempting repairs. This helps the repair materials adhere properly.

Using a Coloring Kit

For small chips:

  • Choose a coloring kit that closely matches your quartz countertop color and pattern. Coloring kits come in many standard quartz shades.
  • Mix the colored putty according to kit directions. Coloring agents can be added to achieve an exact color match.
  • Press the putty firmly into the chip, overfilling slightly.
  • Use a plastic putty knife to remove excess, leaving the putty flush with the surrounding quartz.
  • Allow the putty to dry completely, usually about 30 minutes.
  • Once dry, sand lightly with 220 grit sandpaper to smooth the area. Buff with a soft cloth.

The repaired chip should now blend with the surrounding countertop. Coloring kits provide a simple and inexpensive fix for minor quartz countertop chips.

Performing a Patch Repair

For larger chips wider than 1/4 inch:

  • Mark the damaged area to be removed. Make square or rectangular cut lines using a rotary tool with a diamond blade.
  • Cut out the damaged section with a rotary tool. Cut 2/3 of the way through the thickness of the quartz.
  • Carefully tap the scrap piece free using a hammer and chisel. Remove any remaining material with a rotary tool.
  • Smooth and clean the cut-out area in preparation for the patch piece.
  • Make a template of the opening and trace it onto new quartz material. Cut out the patch piece.
  • Dry fit the patch and make any adjustments for a flush fit.
  • Clean the patch piece and roughen it with sandpaper to improve adhesion.
  • Prepare epoxy adhesive according to package directions. Apply to the patch and opening.
  • Firmly press the patch into place, wiping away any excess adhesive squeeze-out.
  • Allow the adhesive to fully cure for 24 hours before cleaning up with a razor blade.
  • Sand lightly around the seam and buff to blend with the surrounding quartz.

With care, a properly cut and bonded quartz patch becomes an invisible repair. This restores structural integrity and provides a seamless appearance.

Evaluating and Repairing Cracks

For cracks:

  • Surface cracks from impact damage may be repaired by sealing with a thin layer of clear epoxy. Smooth the epoxy over the crack with an old gift card.
  • Structural cracks indicate the countertop is unstable. They require cutting out and replacing the whole cracked section.
  • Cracks near cutouts for sinks and stoves are high stress areas. These indicate material failure, requiring a full countertop replacement.
  • Identify whether a crack is isolated or spreading. Spreading cracks must be replaced, isolated cracks may be repairable.
  • Assess whether cracks run partially or fully through the thickness of the quartz. Partial cracks are better candidates for repair.
  • Repairs to major cracks have a higher likelihood of re-cracking and should be considered temporary fixes.

Quartz repairs can restore the appearance and function of damaged countertops. But some cracks are beyond repair and indicate a full replacement is needed.

Preventing Damage

To help prevent chips and cracks:

  • Use cutting boards instead of cutting directly on the quartz surface.
  • Don’t place hot pans directly on the countertop. Always use trivets.
  • Avoid hammering, chopping or pounding on the quartz.
  • Seal and reseal quartz regularly with a penetrating sealer to help prevent staining and damage.
  • Handle heavy quartz slabs carefully during transportation and installation.
  • Support overhangs properly with corbels or other support structures.

With proper care and maintenance, quartz countertops can remain resilient. But chips and cracks happen. Knowing how to repair quartz damage can save thousands of dollars compared to a full replacement.

Frequently Asked Questions About Repairing Quartz Chips

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

Many small quartz chips can be repaired successfully with coloring kits and epoxy adhesive. Larger repairs are also possible for experienced DIYers. But extensive damage may require a professional fabricator for the best results.

What color putty or epoxy should I use?

Use a putty or epoxy that matches your quartz color and pattern. Some kits include colorants to achieve an exact match. Bring a sample of your quartz when purchasing repair products.

Should I use the same brand of quartz for a patch repair?

Ideally, yes. But any high quality quartz can work well. Matching the particle size and pattern usually gives the most seamless results.

Can I just use clear epoxy resin to repair a quartz chip?

For invisible repairs, tinted putty or epoxy that matches the surrounding quartz works better than clear. But clear can work for small translucent chips.

How long will my quartz chip repair last?

Colored putty repairs may last 5-10 years. Epoxy patch repairs can last many years if properly bonded. But repairs in high use areas may deteriorate faster than other spots.


Repairing chips and cracks in quartz countertops is very achievable. Small chips can be filled with colored putty. Larger repairs require cutting, patching, bonding, and refinishing. Evaluating the type of damage and using the right materials and techniques is key to making durable and seamless repairs. With some skill and patience, quartz damage can be fixed and avoid costly full countertop replacement.