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What to Expect from the Radon Inspection

Writer's picture: Sarah BatesSarah Bates

Updated: Jul 16, 2024


Here’s what you need to know if you have scheduled a radon testing inspection, why it’s important, and what to expect during the process.


What is Radon?

Radon is a colorless, odorless, and tasteless radioactive gas that forms from the natural decay of uranium in soil, rock, and water. It can seep into homes through cracks in floors, walls, and foundations. Prolonged exposure to high levels of radon is a leading cause of lung cancer among non-smokers, making it essential to test for and mitigate radon in homes.


Cost of a Radon Test

Generally, a Radon Test ranges anywhere from $185 - $295 in the State of Tennessee.


Why People Test for Radon

  1. Health Risks: Radon exposure is thought to be the second leading cause of lung cancer in the United States. The only way to know if your home has high radon levels is to test for it.

  2. Invisible Threat: Since radon is undetectable by human senses, regular testing is the only method to identify its presence.


What to Expect During a Radon Test

  1. The Test Method

    1. 48 Hour Test: The standard Radon testing method for real estate transactions is a machine the size of a shoebox on a stand that is left in the Seller's home for 48 hours.

  2. Setting Up the Test

    1. Placement: The radon test device is typically placed in the lowest level of the home that is regularly used, such as a basement or first floor. It should be in a location where it won’t be disturbed, away from drafts, high humidity, and exterior walls.

  3. During the Test

    1. Closed Conditions: For accurate results, maintain “closed-house conditions” for at least 12 hours before and during the test. This means keeping all windows and doors closed, except for normal entry and exit.

    2. Avoid Interference: Ensure that the test device is not moved or tampered with during the testing period.

  4. After the Test

    1. Retrieving the Device: After the test period is complete, the device will be sent to a laboratory for analysis if it’s a passive device like a charcoal canister or alpha-track detector. Electronic monitors can provide immediate results.

    2. Interpreting Results: Radon levels are measured in picocuries per liter of air (pCi/L). The EPA recommends taking action if radon levels are 4 pCi/L or higher. However, even levels between 2-4 pCi/L may pose some risk and warrant consideration for mitigation.

  5. Mitigation if Necessary

    1. Professional Mitigation: If your home tests high for radon, a professional radon mitigation contractor can install a radon reduction system. These systems are highly effective at reducing radon levels.

    2. Follow-Up Testing: After mitigation, it’s important to conduct follow-up tests to ensure the system is working properly and that radon levels remain low.


Conclusion

By understanding what to expect during the testing process, you can know the basics!

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