Sunday, July 18, 2010

Do my granite counters emit dangerous levels of radon?

Recently I have heard this question from at least 2 clients for whom we installed granite counters. Following a story published by The New York Times in July 2008, consumers started to question whether they made a mistake by choosing granite for their homes. They had frightening images of the Three-Mile Kitchen island. The reports were about granite counters that contained radium which can emit radon, a radioactive gas that can cause lung cancer.
While some granite counters have been found to give off trace amounts of radon, very few granite countertops pose a real threat. The EPA has even issued a statement saying that there is insufficient evidence to suggest that granite countertops are a source of radon. EPA lists a safety limit of 4 picocuries per liter of air so if you are worried, pick up a home testing kit for about $25. If you see levels above the EPA's limit, call in a specialist.


I have included a few web links that explain this topic in more detail.


http://safegranite.blogspot.com/
http://www.khou.com/images/0805/trifoldradonbrochure_080507.pdf
http://www.marble-institute.com/
http://www.marble-institute.com/industryresources/radontesting_u-akron2008.pdf
http://www.marble-institute.com/industryresources/assessingexposureexecutivesummary.pdf
http://www.reuters.com/article/pressRelease/idUS179560+11-Aug-2008+PRN20080811

15 comments:

  1. This comment has been removed by a blog administrator.

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  3. Yikes! I would have never thought about that, how scary. I just called the guys who did my granite countertops in NH to confirm that there is no level of radon in mine.

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  4. dear its a very nice blog and the info about the granite is really interesting.

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  5. Is there any assurance or methods to follow to insure that this devices do not contain the said radioactive material? I'm planning to buy one for use by my contractor.

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  6. I didn't know this and it makes me sad, mainly because I really like granite counter tops. I didn't know that the type of stone could have that affect on it.

    Jim Tracy | http://www.mbabuildinggroup.com/home-renovations.jsp

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