Radon testing a basement
Hi, I recently got a newsletter from the Environmental Protection Agency saying that last month was National Radon Month and that my home should be tested for radon. Apparently, it is recommended that you fix the home if the radon level is 4 picoCuries per liter (pCi/L) or higher. Can the radon be effectively and accurately tested with a take-home radon testing kit? These take home kits are cheap -- as low as $10, but I am a little skeptical of their accuracy. My instinct is to hire a professional home inspector to do the testing. Has anyone tried a home kit or a professional -- which one should I go with? How much would a professional charge? I guess I could also get him to inspect some other things while he's there. Oh, and has anyone found any radon being emitted from granite kitchen countertop? I heard that these could also have radon. Thanks very much for any recommendations.