Radon in Countertops: What You Need to Know

Today we're talking about radon in granite countertops, and how it can affect which materials you choose for your home. Granite is a naturally occurring stone, mined directly from the earth. Granite is then cut into slabs, polished and installed directly into the consumer's home. Like all rocks, granite may contain naturally occurring radioactive elements like radon, uranium and thorium. Some granite contains higher amounts of these elements than others, but there is no way to tell which stones are more volatile.

According to the Environment Protection Agency, the radioactive elements in granite are generally found as solids, but over time they may decay into radon.

Rooms with granite components, such as kitchens and bathrooms, are recommended to be well ventilated to help lessen the risks. Of course, the best way to avoid all possible contamination of radon from your countertops is to use a material without these associated risks.

Cambria Quartz has been accredited by several organizations in regards to indoor air quality to assure their consumers of the safety and purity of their product:


  • NSF International helps protect consumers by certifying products and writing standards for food, water, air and consumer goods.  Cambria is proud to be certified by this leading consumer goods organization.  Cambria is non-porous, which means it doesn’t allow liquids to penetrate the surface thereby reducing the risk for stains and bacteria growth.  Cambria doesn’t require sealing or on-going maintenance to protect the surface; it is naturally safe for your home.


  • Cambria is radon free and does not emit radiation into the air. Cambria surfaces have been tested for radon emissions by Air Quality Sciences, Inc., an International Organization for Standard accredited Indoor Air Quality Company.  The test confirms that Cambria Natural Quartz Surfaces™ have zero emissions.


  • GREENGUARD Indoor Air Quality Certified & GREENGUARD For Children & Schools Certified Cambria® Natural Quartz Surfaces has been GREENGUARD Indoor Air Quality Certified® by the GREENGUARD Environmental Institute (GEI) under the GREENGUARD Standard for Low Emitting Products.