Is CLR Safe on Quartz Countertops?

What is CLR?

CLR (short for “Calcium, Lime, and Rust”) is a common household cleaner used to remove mineral deposits, soap scum, hard water stains, and other tough buildup. It contains lactic acid, gluconic acid, and other mild acids that help dissolve stains. CLR comes in a few varieties, including original CLR, CLR Bath and Kitchen, and CLR Calcium, Lime, Rust Remover.

Is CLR Safe for Quartz?

The short answer is** yes, CLR is generally considered safe to use on quartz countertops** when diluted properly and used sparingly. Quartz is very stain-resistant and non-porous, so harsh chemicals are rarely needed for cleaning. However, the acids in CLR can be helpful for removing hard water stains and soap scum that accumulate over time.

Here are some tips for safely using CLR on quartz:

  • Dilute it – Only use a mild CLR solution of 1 part CLR to 4 parts water. This dilutes the acidic ingredients to prevent etching or discoloration.
  • Spot test first – Try CLR in a small, inconspicuous area first to ensure it does not affect the finish.
  • Limit usage – Only use CLR for occasional deep cleaning, not regular maintenance. Frequent use of acidic cleaners can damage the quartz over time.
  • Rinse thoroughly – Rinse the surface several times after use to remove all CLR residue. Acids left on the surface can cause deterioration.
  • Never use on polished finishes – CLR is only safe for quartz with honed or textured finishes. Using it on polished quartz can seriously damage the shine.

Proper Quartz Cleaning and Care

While CLR can occasionally be useful for quartz countertop cleaning, it’s important not to overuse harsh chemicals. Here are some gentle, safe ways to clean and care for quartz:

Daily Cleaning

  • Use a soft sponge or microfiber cloth with warm water and mild soap. Avoid abrasive pads.
  • Rinse thoroughly and dry with a clean towel.
  • Quickly wipe up spills as they occur to prevent staining.

Weekly Cleaning

  • Clean with a quartz-safe granite cleaner and soft cloth.
  • Use a nonabrasive scrubbing pad to remove stuck-on messes.
  • Disinfect periodically with diluted hydrogen peroxide.

Preventative Care

  • Use coasters under glasses and trivets under hot pans.
  • Clean up spills immediately to avoid stains.
  • Avoid exposing quartz to strong chemicals like paint removers, oven cleaners, etc.
  • Reseal quartz every 1-2 years with a specialty sealer.

FAQs About Using CLR on Quartz

Is it okay to use CLR daily on my quartz countertops?

No, CLR should only be used occasionally. Frequent use of acidic cleaners will damage the quartz over time. Stick to mild soapy water for daily cleaning.

Can CLR remove hard water stains from quartz?

Yes, a diluted CLR solution can help dissolve and remove stubborn hard water stains on quartz. Rinse thoroughly afterward.

What happens if I use undiluted CLR on quartz?

Undiluted CLR may etch or discolor quartz, especially polished surfaces. Always dilute CLR per the manufacturer’s instructions before using on quartz.

How long should I let CLR sit before rinsing?

Let diluted CLR sit on quartz stains for 1-2 minutes before rinsing thoroughly. Do not let it sit for extended periods, as the acids can damage the surface.

Is it safe to use CLR on quartz shower walls and floors?

Yes, diluted CLR can safely be used to remove soap scum and hard water buildup from quartz showers. Use caution and limit frequency to avoid damage.


When used properly, CLR can be a helpful cleaner for occasional quartz countertop maintenance. However, it’s important to dilute CLR correctly, spot test first, and limit frequency of use to prevent damaging quartz surfaces. For routine cleaning, stick to gentle soap and water. And be sure to rinse quartz thoroughly after using CLR to remove all acidic residue. With the proper care, your beautiful quartz counters can stay looking like new for years to come.