Based on significant research from granite's around the world, it is determined that there is a minimal and acceptable amount of radon in average granite building materials. Although quartz countertops will have less to zero radon, it does not preclude granite as a “less safe” choice in kitchen countertops.
One of the many benefits to quartz is its low maintenance, including daily care. The non-porous surface won't become a breeding ground for bacteria and germs, so the non-toxic counter is easy to maintain with non-toxic cleaners.
It's bacteria-free, non-porous, very resilient, and non-porous. Consequently, it will need less maintenance and upkeep than granite. However, the look of quartz is uniform and although it imitates natural stones, it comes in well-established colors and designs.
Quartz is Easier to Maintain than Granite
This countertop achieves a high level of durability without any sealant. As opposed to Granite, which requires re-sealing each year to maintain a less superior guard against the common hot pan, spilled wine, and dirty hands. An easy to clean countertop is the new kitchen dream.
Quartz and granite contain varying amounts of uranium, thorium, and potassium, which are naturally radioactive. Uranium and thorium decay to a radioactive gas, radon, which in turn decays to other radionuclides.
Quartz, silica, crystalline silica and flint are non-toxic materials having no known adverse health effects from ingestion. However, it does pose considerable hazards with respect to long term inhalation. CAS: 14808-60-7 Silica: ACGIH TLV & OSHA PEL: 0.1 mg/cubic meter 8 hr. TWA, Respirable Dust.
It is possible for any granite sample to contain varying concentrations of uranium and other naturally occurring radioactive elements. These elements can emit radiation and produce radon gas, a source of alpha and beta particles and gamma rays (see www.epa.gov/radiation/radiation-terms-and-units).
Quartz can be more expensive than other countertops but is generally cheaper than natural stone and other luxury options. It does require professional installation and can discolor when exposed to high temperatures and extensive heat for long periods.
If granite becomes damaged or the sealant wears off, spills may seep into the surface, resulting in stains since the stone is naturally porous. This makes quartz a prime option for busy kitchens or homes with children thanks to its resistance to staining, cracks, and discoloration.
If you were to put a hot pan or pot on a quartz countertop, the countertop could become very damaged. Quartz is made up of mostly quartz mixed with resin. The resin in the quartz is highly affected by heat, and this is why placing a hot pan on quartz is so strongly discouraged.
One of the main reasons quartz has exploded in popularity is due to appearance. Quartz has the look of stone while also allowing homeowners to customize the design. While granite offers many options in terms of appearance, you may have to search for the right piece that matches your color scheme.
Durability
– Granite is much more heat resistant than quartz. – Granite scratches less easily than quartz.
Although quartz countertops will have less to zero radon, it does not preclude granite as a “less safe” choice in kitchen countertops. Given the radiation naturally encountered through flying, walking around a city, and living your everyday life, it is not significant enough to discourage granite in the household.
Con: Heat Resistance
Quartz countertops are somewhat heat resistant, but at very high temperatures the resins that bind the quartz crystals may discolor. If heat resistance is a top priority for you, a natural stone countertop may be a better choice, although stone surfaces can also be damaged by excessive heat.
Nonporous materials do not have any entrance points for germs, making it nearly impossible for quartz countertops to host bacteria, mold, or mildew. High-quality antimicrobial quartz countertops can give homeowners peace of mind, especially if they spend a lot of their free time in the kitchen.
More durable than natural stones: Quartz is harder compared to granite and other natural stones making it more durable and less susceptible to chipping. Low Maintenance: Unlike granite, you do not need annual resealing to maintain your countertops due to quartz's nonporous nature.
If other homes sold in your area have quartz countertops and sold at or under your home's value, granite doesn't make sense. In this case, quartz adds the most value. Buyers will pay extra for upgrades but not if they can purchase a home similar to yours for a lower price without them.
Quartz and granite countertops are priced similarly per square foot, with granite counters having the wider variation in price. Granite can be more expensive than quartz at times, based on the availability of a color and pattern. Sometimes quartz is more expensive due to the treatments it receives during manufacturing.
Sunlight. Because quartz is made using polyester resin, over time you may start to notice some discolouration - particularly in lighter coloured countertops. On average, it takes less than a year of daily sunlight for a quartz worktop to fade.
Lifespan. Warranties on quartz countertops last from 10 years to the life of your home. In reality, they have the potential to last much longer than your house. The man-made products used in their construction don't break down over time, and the natural materials are all but indestructible.
Quartz (Engineered Stone)
This high-end material is one of the top choices for a luxury kitchen countertop.
With the concern over the radioactive risk potential of granite countertops, it is important to remember that we are always exposed to a certain level of background radiation. All granite, and most earthen materials, contain trace amounts of uranium and radium, emit gamma radiation and release radon gas.
Radon released from granite building materials can be released over the lifetime of use but typically will be diluted by ventilation. In addition to radon, naturally occurring radioactive elements in the granite can emit small amounts of beta and gamma radiation.
Granite Doesn't Release VOCs
While they're common in many types of building materials like laminate, they are not found in natural stone. You can rest assured knowing that your beautiful granite stone countertop won't contribute to poor indoor air quality since it doesn't leach VOCs.