How to Fill in a Chip in Quartz Countertop

Quartz countertops are durable and attractive, but chips and cracks can occur over time. Thankfully, it is possible to repair minor damage on a quartz countertop with a chip repair kit. Here is a step-by-step guide on how to properly fill in a chip in a quartz countertop.

Assessing the Damage

The first step is to take a close look at the chip or crack and assess the level of damage. Small chips, scratches, and hairline cracks can often be repaired. However, deep cracks or large missing chunks may require a professional repair or countertop replacement.

  • Examine the size and depth of the damaged area. Chips less than 1/4 inch in size can generally be repaired.
  • Determine if the damage is only in the surface layer or if it extends deeper into the countertop. Surface level damage is the easiest to fix.
  • Make sure the damaged edge is clean and free of debris before repairing.

Gathering Supplies

You will need a few specialty products to fill in a chip on a quartz countertop. These can be purchased online or at hardware stores.

  • Quartz countertop repair kit. These contain epoxy resin, colored filler powder, mixing sticks, and detailed instructions. Select a kit in the color that matches your countertop.
  • Acetone or denatured alcohol. Used for cleaning the damaged area before repair.
  • Putty knife or spatula. For applying the filler material into the chip.
  • Sandpaper. High grit 180+ for smoothing the filled area once dry.
  • Tape. Masking or painter’s tape to mask off the repair area.

Preparing the Damaged Area

Proper preparation is crucial for a seamless quartz countertop chip repair.

  • Clean the damaged spot thoroughly with acetone or alcohol on a cloth to remove grease, dirt and debris.
  • Use painter’s tape to mask off the area around the chip to keep excess filler from getting on the undamaged countertop surface.
  • Make sure the damaged area is completely dry before applying the filler compound.

Mixing and Applying the Filler

Refer to the kit instructions for exact mixing directions. Here is the general process:

  • Measure out equal parts of the epoxy resin and the colored filler according to the kit directions.
  • Thoroughly mix the resin and filler together with a stick until a smooth, consistent colored putty is formed.
  • Apply the putty carefully into the damaged spot, overfilling slightly.
  • Use the stick or a putty knife to pack the material into the chip, removing any air pockets.
  • Make sure it is flush with the undamaged quartz surface.
  • Remove the painter’s tape before the filler dries.

Curing and Sanding

  • Allow the filler to cure fully according to the manufacturer’s directions. This usually takes about 24 hours.
  • Once completely cured, use 180 grit or higher sandpaper to smooth and level the filled area the rest of the countertop.
  • Take care not to sand through or damage the surrounding quartz surface.
  • Wipe clean and inspect the repair. Apply a second coat of filler if needed to achieve a seamless fix.

Protecting and Maintaining the Repair

To get the longest lasting chip repair on your quartz countertop, be sure to:

  • Use a sealant made specifically for quartz on top of the repaired area. This fills any remaining pores and prevents moisture damage.
  • Avoid placing hot pans directly on the repaired spot to prevent future cracks or chips.
  • Use a cutting board for food preparation instead of cutting directly on the countertop.
  • Re-inspect repairs periodically and touch up if needed to maintain the seamless appearance.

With the right products and techniques, minor chips, cracks, and scratches on quartz countertops can be repaired successfully. Just be sure to properly fill, smooth, seal, and care for the area to get the longest lasting results.

Frequently Asked Questions About Repairing Chips in Quartz Countertops

Can I use a typical epoxy or putty from the hardware store?

No, it is best to use a quartz countertop repair kit formulated for this specific material. The included epoxy filler is designed to bond properly and match the countertop color.

How well does the repair blend in?

When done properly, a chip repair can be nearly invisible and indistinguishable from the original quartz surface. Matching the color and finish is key.

What about a cracked corner or edge?

Corner chips and cracks are difficult to repair well. The best option is to hire a pro to polish and refinish the edge or replace that section of countertop.

Will the repaired spot stain or discolor over time?

It shouldn’t if sealed properly. Be sure to use a quartz-specific sealant and reapply yearly or as needed. Avoid exposing the repair to heat.

Is there a risk of damaging the countertop when repairing a chip?

There is a small risk of causing further damage if you are not careful in sanding or polishing. Take your time and be cautious around edges and seams.

How long does the repair last?

A properly filled chip can last years with proper care. Avoid direct heat exposure and re-seal as needed. Deep cracks or poorly matched repairs may be more prone to damage.

When is it better to just replace the whole countertop?

If the damage is extensive, a full replacement may be better than attempting to repair multiple areas. Repairs are best for minor isolated chips and scratches.


Damaged areas like small chips, cracks, and scratches can stand out and detract from the beauty of quartz countertops. Thankfully, these imperfections can often be repaired with great results by using a high quality quartz filler kit and following careful application procedures. Paying attention to proper surface preparation, color matching, smooth final sanding, sealing, and ongoing care will help ensure your DIY chip repairs are long-lasting and virtually undetectable. With some patience and the right materials, you can avoid the expense and hassle of a full quartz countertop replacement.