Are granite counter tops eco friendly? Do they off gas? If so, do you have any idea how long off gassing takes?

Ceil,

This EPA weblink (here) indicates that any type of rock could contain naturally occurring radioactive elements, such as radon.

• Some types of granite may contain more of these elements than others.
• The link indicates that there are no generally accepted testing methods for radon in granite counter tops.
• The EPA also discusses the length of time for radon to degrade and the types of home tests available - which may be a good idea for anyone to know, given the potential health risks associated with radon.

This EPA link outlines the health risks of radon and can a be a good starting point to learn and provide guidance toward mitigating radon.

Regards, Edward

For more information:

Read "Where can I find radon testing equipment for granite countertops? And what are safe levels?" a Q&A answered by Bill Bradbury.