How to Care for & Repair Quartz Countertops
Quartz countertops are engineered for durability, but they're not maintenance-free. Learn proper care, stain removal, and repair techniques from professional stone care experts.
Quartz countertops are engineered stone—a combination of natural quartz crystals (90–94%) bound with polymer resins. This makes them non-porous, stain-resistant, and low-maintenance. But 'low maintenance' isn't 'no maintenance.' Quartz can still be damaged by heat, certain chemicals, and impact. And when damage occurs, repairs require specialized techniques. At Granite Heroes, we've repaired and maintained quartz countertops across Chicago, and we know exactly what these surfaces need—and don't need.
1. Daily cleaning: simple and straightforward
Quartz is the easiest countertop material to clean daily. Wipe with a soft cloth and mild dish soap mixed with warm water. No special cleaners needed. Rinse with clean water and dry to prevent water spots. For stuck-on food, gently scrape with a plastic putty knife, then clean as usual. Quartz doesn't need sealing—ever.
Professional tip: Avoid cleaners containing bleach or ammonia for daily use. While occasional use won't cause immediate damage, repeated exposure can dull the resin finish over time.
2. Protect from heat—quartz's weakness
Heat is quartz's biggest enemy. The polymer resins that bind quartz crystals can scorch, discolor, or crack at temperatures above 300°F. ALWAYS use trivets for hot pots, pans, baking sheets, and crockpots. Never place a hot pan directly on quartz—even briefly. Heat damage is permanent and cannot be repaired without professional resurfacing.
Professional tip: Slow cookers, instant pots, and electric griddles are stealth heat sources—they don't seem as hot as a stovetop pan, but prolonged contact at 200°F+ can still damage quartz.
3. Remove stains with the right approach
While quartz is non-porous, certain substances can bond with the resin: permanent markers, hair dye, nail polish, and some inks. For these stains, apply rubbing alcohol or acetone-based nail polish remover on a soft cloth and gently rub. For food stains (turmeric, mustard), a paste of baking soda and water left for 10 minutes usually works. Never use abrasive pads.
Professional tip: Magic Erasers (melamine foam) are mildly abrasive and can dull quartz's finish with repeated use. Use them sparingly and only on stubborn stains.
4. Fix chips and cracks in quartz
Small chips (under ½ inch) can be repaired with clear or color-matched epoxy. Clean the area, apply epoxy with a toothpick, slightly overfill, and let cure 24 hours. Sand flush with fine-grit sandpaper. For larger chips, cracks, or seam separations, professional repair is recommended—improper repair attempts often look worse than the original damage.
Professional tip: Save the chip piece if possible. A professional can often re-bond the original piece for a nearly invisible repair.
5. Prevent common damage scenarios
Use cutting boards always (knives can scratch the resin surface), keep harsh chemicals away (drain cleaner, oven cleaner, paint stripper can permanently damage quartz), and avoid excessive force near seams and corners—these are the most vulnerable areas. Quartz is tough but not invincible.
Professional tip: The area around the sink cutout is the most vulnerable to cracking—don't sit on the countertop near the sink, and use care when installing or removing heavy fixtures.
6. Professional restoration for dull or damaged quartz
Over years of use, quartz can develop a dull, worn appearance—especially in high-use areas. Professional quartz restoration involves diamond polishing the surface to restore the factory finish. This is different from natural stone polishing and requires quartz-specific equipment and compounds. Professional restoration can make a 10-year-old quartz countertop look new again.
Professional tip: If your quartz looks dull in some areas but glossy in others, it's likely surface wear rather than a defect. Professional polishing creates a uniform finish across the entire surface.
Does quartz need to be sealed?
No. Quartz is non-porous due to its resin binder. Sealing is unnecessary and can actually create problems—sealer sits on the surface rather than absorbing, potentially causing haze or stickiness.
Can quartz countertops crack?
Yes, though it's uncommon. Cracks can occur from heavy impact (dropping a heavy object on an edge), improper support (unsupported overhangs), or thermal shock (extreme heat). Professional repair can fix most cracks.
How long do quartz countertops last?
With proper care, quartz countertops can last 25+ years. The resin binder may dull slightly over time with heavy use, but professional polishing restores the finish. Quartz is one of the most durable countertop options available.
Can you change the finish on quartz from glossy to matte?
Yes. Professional diamond honing can convert a glossy quartz finish to a matte or leathered look. This is a permanent change that also hides minor scratches and wear marks.