How to Repair a Chipped Quartz Countertop

Quartz countertops are popular choices for kitchens and bathrooms because of their durability, ease of maintenance, and stylish appearance. However, like any solid surface, quartz can become damaged over time, including getting chips and cracks. Thankfully, there are several effective methods for repairing chipped quartz countertops and restoring their flawless look.

What You’ll Need

  • Safety gear – gloves, goggles, mask
  • Clean rags
  • Acetone or denatured alcohol
  • Putty knife or razors
  • 180-220 grit sandpaper
  • Quartz filler compound
  • Mixing sticks or paddle
  • Plastic spreader or putty knife
  • Clean water in a spray bottle
  • Polishing pads
  • Polishing compound or automotive rubbing compound

Preparing the Damaged Area

Before starting repairs, make sure to protect nearby surfaces with painters tape and plastic sheeting if needed. Wear safety goggles, gloves, and a dust mask to avoid irritation from debris.

Thoroughly clean the damaged area with acetone or denatured alcohol on a rag to remove any dirt, grease, or waxes. Allow it to fully dry. This helps the filler adhere properly.

Use a sharp putty knife or new single edge razor blade to carefully scrape out any loose edges or chunks around the chipped area. This creates a clean surface for the filler to bond to.

Gently sand the damaged spot and surrounding area with 180 grit sandpaper to rough up the smooth factory finish. This scarifies the quartz for optimal mechanical adhesion. Take care not to sand too aggressively.

Wipe clean with a dry rag afterwards to remove all dust. Now the chipped quartz countertop is prepped and ready for repairs.

Applying Filler Compound

There are several quartz countertop filler and repair kits available online and at hardware stores. Look for epoxy or polyester resin compounds specifically designed for solid surface repairs.

Follow all directions from the product manufacturer closely. Mix the filler resin and hardener as instructed, using a stirring stick to reach the bottom and sides of the container. Mix thoroughly until completely blended with no streaks.

Tip: To match the color of your existing quartz, consider adding a small amount of powder pigment to the filler. Mix it in thoroughly.

Load some filler onto a plastic spreader or clean putty knife. Press firmly into the damaged area, overfilling slightly. Remove any excess with a clean rag before curing begins.

Try to match the original contour and profile as closely as possible. The filled chip should be flush with the surrounding countertop.

Allow the filler to cure fully, following directions. Most take 6-12 hours to harden completely. Avoid disturbing or cleaning the repair during this time.

Sanding the Filler Smooth

Once fully cured, the filled area can be sanded smooth. Use 220 grit sandpaper to gently blend the edges into the countertop surface.

Try to keep sanding minimal and targeted only on the filler itself. Be careful not to create scratches or an uneven appearance.

Thoroughly wipe away all sanding dust afterwards with a dry rag. Avoid wiping debris into other areas. Inspect closely and do more gentle sanding if needed to smooth the repair.

Polishing & Sealing

After sanding, use a polishing compound or automotive rubbing compound with a buffing pad to restore sheen. Work in circular motions and switch to a clean area of the pad often.

Thin coats of mineral oil, beeswax, or a quartz sealing product can help fill micro-scratches and blend any variations in gloss.

Inspect closely under bright light from all angles. Make sure the repair is completely flush with no remaining roughness before cleaning the area.

Cleaning & Inspecting the Repair

Use a pH neutral quartz cleaner to remove any residue from repairs. Avoid harsh chemicals. Check for a perfectly smooth finish.

If there are still any slight imperfections in the filler area, repeat the sanding and polishing process until the repair blends seamlessly.

With patience and care, chipped quartz countertops can be repaired to look and function like new again. Schedule any adjacent repairs before replacing items.

Tips for Preventing Damage

  • Use cutting boards, hot pads, trivets, and cookware carefully to avoid impact damage or thermal shock.
  • Clean spills promptly to avoid stains setting in cracks or crevices.
  • Consider adding an apron front along the counter edge to protect from utensils, pots, etc.
  • Avoid using quartz polish and waxes which can build up in cracks over time.
  • Never place hot pans, dishes, etc. directly on the countertop.
  • Keep heavy objects centered when setting down to prevent point stress.
  • Have new cracks or chips repaired promptly to prevent further damage.

What if My Countertop Has Major Damage?

For cracks wider than 1/16″ or chips larger than a dime, professional help may be needed for proper structural repairs.

  • Use painter’s tape along the crack temporarily to prevent debris getting stuck inside.
  • Contact a quartz fabrication and installation company to arrange repairs.
  • They can sand out large chips and fill cracks with color-matched filler.
  • Damaged sections may need cutting out and replacing if severe.
  • Seams can be recut or further secured if needed.
  • Opt for professional help with repairs over 1/4″ across.
  • Major damage may require replacing the entire top. Check warranty terms.

How Much Does Quartz Countertop Repair Cost?

  • Small chips can often be repaired successfully with a DIY kit costing $10-$30.
  • For more significant damage, professional repair costs typically run $100 – $500 depending on severity and location.
  • Repairs to seams or corners often cost more due to complexity.
  • Partial quartz countertop replacement typically ranges from $200 – $1000.
  • A full replacement quartz countertop can run $2000 – $4000 professionally installed.
  • Always get a detailed quote for your specific project.
  • Weigh costs vs. replacing the top if damage is extensive.

FAQs About Fixing Quartz Chips and Cracks

What’s the easiest way to fix a chip in a quartz countertop?

For small chips less than 1/4″, using a DIY repair kit with resin filler, sanding, and polishing can often fix it invisibly. Larger chips may require professional help.

What glue works best for quartz countertops?

Opt for adhesives made specifically for quartz like two-part epoxy or polyester resin fillers. Avoid super glue, epoxy glue, or clear adhesives which lack filler material.

Can you use automotive bondo on quartz?

Yes, two-part auto body filler putty can be effective for repairing chips and cracks in quartz surfaces. The color may need adjusting. Get one suited for smooth surfaces.

What can I use to fill gaps in my quartz countertop seams?

Use a clear two-part resin designed for quartz repairs. Remove debris from any gaps first. Inject resin, allow to cure, then sand and polish smooth. Badly separated seams may need professional resealing.

Is it possible to repair quartz countertops myself?

Small chips, cracks, and seam gaps can often be repaired successfully with DIY kits. However, severe damage or complex repairs are best left to quartz fabrication pros. Their experience helps ensure structural durability and invisible appearance.

Can you buff out scratches on quartz?

Light superficial scratches may be minimized by buffing with polishing compounds designed for quartz or automotive finishes. But deep scratches, chips, and seam damage need filler repairs for an invisible fix.


Chips, cracks, and other surface damage can happen to quartz countertops through regular wear and tear. Thankfully, most types of damage can be repaired invisibly with the right techniques and products.

For home DIY repairs, be sure to thoroughly clean and prepare damaged areas first. Carefully follow kit directions for mixing and applying resin fillers. Sanding, polishing, and sealing helps achieve a smooth factory finish. Small repairs can restore flawless appearance.

However, it’s smart to have major chips, cracks, or seam damage evaluated by a professional quartz fabricator. They have specialized skills, tools, and materials to ensure repairs meet structural standards. This prevents future failure or leaks.

With some patience and care, even seriously damaged quartz countertops can often be salvaged by repairs instead of a costly full replacement. Just be sure to address any damage promptly to prevent it worsening over time.