Can I Use Bleach on a Quartz Countertop?


Bleach is a powerful disinfectant and cleaning agent, but it must be used carefully on quartz surfaces. When used properly, diluted bleach can be an effective way to sanitize and brighten quartz. However, bleach can also damage quartz if used incorrectly or excessively.

Below is a detailed look at how to use bleach on quartz countertops safely and effectively.

Can Bleach Be Used on Quartz Countertops?

Yes, diluted bleach can be used to clean and disinfect quartz countertops. When used properly, a diluted bleach-and-water solution can sanitize surfaces and help remove stains and discoloration.

It’s important to note that bleach should only be used occasionally on quartz. Frequent or excessive use of bleach can damage the quartz surface over time. Bleach should be diluted properly before applying to quartz.

Here are some tips for safely using bleach on quartz countertops:

Dilute Bleach Thoroughly

Only use bleach that has been diluted with water. A 10% bleach solution is recommended for quartz surfaces. To make this:

  • Mix 1 part bleach with 9 parts water (for example, 1 cup bleach with 9 cups water).
  • Never use undiluted or “full strength” bleach directly on quartz.

Spot Test First

Before using diluted bleach on the entire countertop, do a spot test on a small, inconspicuous area first. This will ensure the quartz surface does not experience any adverse effects.

Use Occasionally and Briefly

Limit bleach use on quartz to deep cleaning sessions every 1-2 months. Do not use bleach-based cleaners daily or weekly.

Only leave the diluted bleach solution on the quartz for 1-2 minutes before wiping off completely with clean water. Never allow bleach to sit or soak on the countertop.

Rinse Thoroughly

After wiping the diluted bleach solution off the quartz, be sure to rinse the surface several times with clean water to remove all bleach residue. Residual bleach left on quartz can cause damage over time.

How to Clean Quartz Countertops with Bleach

Follow these step-by-step instructions for safely using diluted bleach to clean and disinfect quartz countertops:

1. Clear Countertop

Remove everything from the countertop before cleaning with bleach. Make sure the surface is completely clear.

2. Mix Diluted Bleach Solution

As noted above, mix a 10% bleach solution by combining 1 part bleach with 9 parts water. Use cool or room temperature water.

Never use undiluted bleach directly on quartz!

3. Apply Bleach Solution

Pour or spray the diluted bleach solution directly onto the quartz surface. Use a soft cloth or sponge to spread the bleach over the entire countertop area you wish to clean.

4. Let Sit Briefly

Allow the diluted bleach solution to sit on the quartz for 1-2 minutes maximum. Do not let it sit or soak any longer.

5. Rinse Surface

After 1-2 minutes, thoroughly rinse the entire quartz surface with clean, cool water to remove all bleach residue. Rinse several times as needed.

6. Dry Completely

Use a soft, dry cloth to wipe away all moisture and dry the quartz countertop completely after rinsing.

7. Inspect Surface

Closely inspect the quartz to ensure there is no damage or discoloration from the bleaching. If any concerns arise, do not use bleach again and consult a countertop professional.

Benefits of Using Diluted Bleach on Quartz

When used properly, diluted bleach offers these advantages for quartz countertop cleaning:

  • Sanitizes – Bleach is an effective disinfectant against bacteria, viruses, and other germs. This helps keep quartz hygienic.
  • Removes Stains – Bleach can help break down and remove stubborn stains and discoloration from food, drinks, oils, etc.
  • Deodorizes – Bleach eliminates odors that can linger on countertop surfaces after cooking.
  • Brightens – Bleach can make quartz counters look like new again by brightening the surface.
  • Affordable – Bleach is inexpensive compared to specialized quartz cleaners and disinfectants.

Risks of Using Bleach on Quartz Countertops

While diluted bleach offers benefits for periodic quartz cleaning, there are also risks associated with using it:

  • Surface Damage – If used too frequently or incorrectly, the harsh chemicals in bleach can etch, pit, and discolor quartz surfaces over time.
  • Loss of Shine – Excessive bleaching can lead to a dull, lifeless appearance in quartz rather than a vibrant shine.
  • Accentuation of Scratches – Bleach can highlight fine scratches and wear patterns on quartz counters.
  • Color Change – On lighter quartz, bleach can cause yellowing or faint white spots with repeated use.
  • Health Hazards – Bleach emits fumes that can irritate eyes, skin, and respiratory systems if inhaled.

To avoid these risks, be sure to follow the proper dilution, application, rinsing, and usage limits outlined above. Only use bleach on an occasional, as-needed basis.

Alternative Cleaners for Routine Quartz Care

For routine daily or weekly cleaning, alternative non-bleach cleaners are recommended for quartz countertops:

  • Mild dish soap – Use a few drops of mild liquid dish detergent diluted in warm water. Avoid abrasive soaps.
  • pH-neutral stone cleaner – Look for a specialty stone cleaner formulated to be gentle on quartz.
  • Hydrogen peroxide – As a mild bleach alternative, hydrogen peroxide can disinfect and brighten quartz.
  • Vinegar – Equal parts vinegar and water safely cleans quartz without leaving residue.
  • Ammonia – When heavily diluted with water, ammonia gently cleans quartz without bleaching.

Be sure to rinse and dry quartz thoroughly after using any cleaning solutions. For routine maintenance between deeper cleans, a damp microfiber cloth is all that is needed.

FAQs About Using Bleach on Quartz Countertops

Can I use undiluted bleach directly on my quartz countertop?

No, never use undiluted “full strength” bleach directly on quartz. Always dilute bleach with at least 9 parts water to create a 10% solution before applying to quartz surfaces.

How often can I safely use diluted bleach on my quartz countertop?

Limit diluted bleach cleaning to once every 1-2 months. More frequent bleaching can cause quartz damage over time. Stick to gentler cleaners for daily/weekly care.

Is it okay to let diluted bleach sit on quartz for 5+ minutes while cleaning?

No, only leave diluted bleach on for 1-2 minutes maximum. Leaving bleach on quartz for longer periods increases the risks of surface damage or discoloration occurring.

Can I use a bleach-containing bathroom cleaner on my quartz countertop?

If the cleaner contains undiluted bleach, do not use it directly on quartz. Check if the cleaner is specifically formulated to be quartz-safe. When in doubt, stick to bleach-free cleaners.

I accidentally got some full-strength bleach on my quartz. What should I do?

Immediately rinse the area thoroughly with water. Inspect closely for any signs of damage. Avoid using bleach again and consult a countertop pro if you notice etching or stains.


When used sparingly and correctly, diluted bleach can be an effective cleaner to sanitize quartz countertops and remove stubborn stains. However, bleach also comes with risks if improperly used, so exercise caution. Always dilute bleach thoroughly, limit usage frequency, rinse completely after use, and dry quartz fully. For routine cleaning, use alternative quartz-safe cleaners like dish soap, hydrogen peroxide, vinegar, and stone cleaners without bleach. With the proper care, quartz countertops can maintain their beauty after occasional bleaching. Handle bleach carefully and quartz countertops will stay gorgeous for many years.