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Old 01-06-2010, 07:34 AM
107 posts, read 274,911 times
Reputation: 46


My fiancee and I are in the processing of buying our first home. The offer was accepted and we are scheduled for home inspection on Friday. The home is fairly new and has a nice walk out basement and we were planning to do radon testing.

The previous owners have provided us with copies of the testing that was done when the house was completed. The result of the initial short-term test done before mitigation was 4.3 pCi/L. The builder then installed a mitigation system and after installing the mitigation system, the short-term test result was 0.5 pCi/L. The long-term test result was 0.6 pCi/L. The long term test was completed in July 2009 and we have copies of the reports, etc.

Do you think it is necessary that we do another test given the mitigation efforts and recent long term test results (6 months ago)
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Old 01-06-2010, 07:50 AM
29,988 posts, read 35,842,224 times
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Any test performed during the course of your contract will be a "short term" test. The mitigation system is in place and as long as it is working correctly there will be nothing to be gained financally from a radon re-test during your contract period. However, it would be a good idea to have the mitigation system tested (blower system and meter) to be certain it is functioning as it should when you have your whole-house inspection.

Since the house has been recently tested, if you are concerned about radon levels in the long term I suggest sending away for a self-test for a longer term (6 mo. + test) which you mail in yourself. The cost of such tests is usually well under $40.
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Old 01-07-2010, 08:17 PM
Location: Knoxville
4,135 posts, read 19,720,058 times
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Short answer is NO.

YOu can look at the system itself and tell if it is working properly. There will be a pipe visible, usually in the basement, and it will have a manometer installed on the side. A monometer is a U shaped piece of clear plastic tubing that has a colored liquid inside. This will tell you if the fan is operating, and it is pulling the air from under the slab.

There should also be a small sign next to it explaining how to read it.

You just don't want to see it even at the zeros.

If they did tests and can show you the documentation, then its likely just fine.
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