Granite and many other natural stones are not very porous. Therefore, they are not likely to allow radon to escape in any significant quantity if it even exists at all, which is not very likely due to the dense nature of stone. Also considering the small about of stone in any given area, there is nothing to be concerned about. The greater risk of radon exposure comes from the radon originating in soil beneath a home’s foundation and in well water.
While it is true that some fabricators require you to seal your tops yearly, we use advanced sealers with nano technology that seal your countertops from the inside out and therefore only need to be sealed every 15 years (plus or minus with normal household usage).
Quartz countertops are considered to be non-porous from the manufacturers and therefore do not require sealer to be used.
While granite and quartz countertops are very hard, dense products, they are not impervious to scratching. Knives, rocks, diamond rings, and anything sharp or hard has the ability to scratch these surfaces. Not to mention that cutting on stone will dull your knives much faster.
Any surface can contain bacteria. As long as you are cleaning your countertops after cooking or meals there is nothing to worry about. Even with leathered or suede finished countertops, there is practically no risk as long as normal cleaning procedures are in place.
We only recommend using Dawn dish soap with water and a soft rag. Avoid using any cleaners containing acids, bleach, ammonia, harsh abrasives, or solvents.
Quartz is susceptible to UV lighting that can fade your countertops over time if you have windows that are not UV protected. Quartz is never recommended to be used for outdoor purposes for these very reasons.
We never recommend anyone to stand or sit on their countertops. Even though natural stone and quartz are very hard, dense products, does not mean they are impervious to cracking or breaking.