How to Repair Chip in Quartz Countertop

Quartz countertops are popular in many homes due to their durability, aesthetics, and low maintenance. However, like any other countertop material, quartz can get damaged over time, especially by impacts that cause chips and cracks. Repairing a chip in a quartz countertop is possible with the right materials and techniques. This article provides a step-by-step guide on how to repair a chip in a quartz countertop.

Assessing the Damage

The first step is to assess the extent of the damage. Small chips less than 1/4 inch wide can often be repaired fairly easily, while larger chips may require more effort and material to fill.

Examine the chip closely. Determine its width, length, and depth. Check if the chip is confined to the surface layer of quartz or if it goes deeper into the slab. The difficulty of repair will depend on the size and depth of the chip.

Also, check if the chip has caused any cracks to form across the countertop surface. Cracks will take more advanced repair techniques.

Choosing the Repair Method

There are a few options for repairing a chip in a quartz countertop:

Fill with Colored Epoxy

For small surface chips, colored epoxy resin designed for countertops can be used to fill the void. Tinted epoxy blends in with the quartz color and forms a permanent bond when cured. This provides an excellent chip repair that is flush with the surrounding quartz.

Fill with Polymer Cement

Hardware stores carry polymer-based cement products specifically designed for repairing chips and cracks in quartz countertops. These provide similar results as colored epoxy. Follow manufacturer instructions for mixing and curing.

Professional Chip Repair Service

For larger chips or cracked quartz, a professional chip repair technician may be needed. They have specialized tools and resin materials to fill chips and bond them seamlessly to the surrounding quartz. This gives the best results for severe chip damage.

Repairing a Small Surface Chip

For minor surface chips, a DIY repair is simple with a quartz color-matched epoxy kit. Here are the steps:

Clean the Chip

Use isopropyl alcohol on a clean cloth to thoroughly clean inside the chip. This removes any dirt or debris so the epoxy can adhere.

Sand the Chip Edges

Use 120-grit sandpaper to slightly rough up the edges of the chip. This helps the epoxy bond to the quartz. Be careful not to scratch the surrounding countertop surface.

Prepare the Epoxy Resin

Mix up a small amount of colored epoxy resin per the manufacturer’s instructions. Stir in any tint needed to closely match the quartz color. Work swiftly so the epoxy does not begin curing before it is applied.

Fill the Chip

Use a putty knife or plastic applicator to fill the chip void fully with the prepared epoxy resin. Slightly overfill above the surface.

Allow Curing

Leave the epoxy to harden and cure per the product instructions, usually 24-48 hours. Keep the area dry during curing.

Sand Flush

Once fully cured, use 120-grit sandpaper to sand the epoxy down flush with the surrounding quartz surface.


Finally, use a quartz polishing compound and buffing pad to polish the sanded area. This blends the repair seamlessly into the countertop.

Repairing Larger Chips and Cracks

For more severe chip damage, a two-part polymer cement repair kit is required. These are available made specifically for quartz countertop repairs. Here is the repair process:

Clean the Damaged Area

Use a clean cloth and isopropyl alcohol to remove all dirt, grease, and debris from the damaged section of the countertop. This allows proper adhesion.

Prepare the Surface

Use a diamond grinding bit or sandpaper to rough up the surface around the chip. This allows the cement to mechanically bond.

Mix the Cement

Mix parts A and B of the polymer cement per the manufacturer instructions. Mix only enough for the repair, as the cement cures quickly.

Fill the Chip

Work the cement into the chip with a putty knife, ensuring complete fill with no trapped air pockets. Overfill slightly.

Allow Curing

Follow product instructions for curing time, usually about an hour. Mist occasionally with water to slow curing. Keep the area ventilated.

Sand and Polish

Once fully cured, sand flush with the surrounding quartz. Polish with a quartz polishing compound. Buff well to blend with undamaged areas.

Seal the Repair

Apply a penetrating quartz sealer to the repair area per manufacturer directions. This seals and protects the repair.

How to Repair Quartz Countertop Cracks

Cracks in a quartz countertop require more expertise to properly repair. Here are some tips:

  • Assess the crack length, width, depth, and pattern. Spidery cracks radiating from a chip are common.
  • Deep cracks may require penetrating epoxy designed to wick into cracks via capillary action. Use according to product specifications.
  • For long cracks, drill a small hole at the end point to stop spreading. Fill the crack from bottom to top.
  • Undermount cracks may need injection via syringe applicator. Inject epoxy adhesive, allowing it to penetrate through the crack.
  • Clamp cracks with temporary pressure to hold tight for curing. Remove clamps after the recommended curing time.
  • Be prepared to use coloring agents and multiple rounds of filler to achieve the right color match within cracks.
  • Resealing and polishing gives the best final crack repair appearance.

Tips for Preventing Chips and Cracks

Chips and cracks can be minimized by following these quartz countertop care tips:

  • Always use a cutting board rather than cutting directly on the quartz surface.
  • Don’t allow pots, pans, or other objects to impact the quartz. Lift and set down gently.
  • Install a sink basin protector grid to prevent scratches and impacts from dishes and utensils.
  • Avoid setting very hot pots or pans directly on the quartz. Use trivets and hot pads.
  • Clean spills promptly to avoid moisture seepage that could infiltrate cracks.
  • Have sealers reapplied every 2-3 years by a professional to protect quartz surfaces.

Questions and Answers About Repairing Quartz Chips

Here are some common questions about repairing chips in quartz countertops:

What are the best materials to use for repairing a chip?

For small surface chips, use a colored epoxy designed for quartz countertop repair. For larger chips, use a polymer-based cement repair product formulated for quartz.

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

Small chips can be repaired successfully with a DIY quartz repair kit. Severe chips and cracks are best repaired by a professional fabrication and repair technician.

Does the chip repair blend in seamlessly?

When done properly with the right materials, a well-repaired chip should be almost impossible to detect. Matching the color and finish is key.

How long does the chip repair last?

A proper adhesive repair with epoxy or polymer cement is permanent. With proper care, the repair should last the lifetime of the countertop.

What about chips near a sink or cooktop?

Chips near heat and water sources are still repairable. Be sure to use materials designed for durability in kitchen settings. Resealers add extra protection.

Can I prevent chips and cracks in my quartz countertop?

Chips and cracks can be minimized by using cutting boards, avoiding direct impacts, promptly cleaning spills, and having countertops professionally resealed every few years.


With the right materials and techniques, it is possible to repair chips and cracks in quartz countertops while retaining the beauty and function of your countertop. Assess the damage, choose an appropriate repair method, carefully follow product specifications, and take steps to prevent future damage. In most cases, chips and cracks in quartz can be repaired successfully with minimal appearance of the damage. With proper care, your quartz countertop can remain beautiful for years to come.