How to do a Radon Inspection on a House You Are Buying A Step by Step Radon Home Inspection Guide

When performing a do-it-yourself radon home inspection, it's very important to follow the instructions that come with the radon inspection test kits. If you are doing a radon home inspection on a house you are planning to buy, then you will need to follow a few extra procedures to insure that your results are accurate. Please read and follow the instructions below in addition to the ones that came with your radon inspection test kits.

Before Starting the Real Estate Radon Inspection Test:
  • Notify the home's occupants about the importance of maintaining proper radon testing conditions. Give the occupants written instructions fully explaining closed house testing conditions and the consequences of interfering with the radon home inspection.
  • The model ST-200 radon inspection kit comes with 2 radon detectors. These 2 detectors should be exposed "side-by-side" in the same location. You will probably need to test more than one location so you will probably need more than one ST-200 radon inspection kit.
  • Conduct the test for a minimum of 48 hours. Remember, closed house conditions must exist at least 12 hours before you start the radon test and for the entire duration of the radon home inspection.
  • If you arrive at the house and find that closed house conditions did not exist for 12 hours before the radon inspection start time, you will have to reschedule the test for a time after the 12 hour closed house conditions have been followed.
  • You should always place one set (2 side-by-side) of radon detectors in the basement or lowest lived in level of the home you are buying. You will also need to put radon detectors in each area that is in contact with the ground. This is called testing the footprint of the house. If you're not sure how many ST-200 Radon Inspection Kits you will need to test the footprint of the house you are buying then use our Radon Test Wizard.
  • The radon home inspection should include method(s) to prevent or detect interference with testing conditions or with the radon detector itself.
  • If the house has an active radon mitigation system, make sure the fan is operating properly. If the fan is not operating properly, ask to have it repaired before starting the radon home inspection.

During the Radon Home Inspection Test:
  • Maintain closed-house conditions during the entire radon inspection test period.
  • Operate the home's heating and cooling systems normally during the radon inspection test period. Only operate air-conditioning units which recirculate interior air.
  • Do not disturb the radon detectors at any time during the test.
  • If a radon mitigation system is in place, make sure the system is in operation during the entire radon inspection period.

After the Radon Home Inspection Test:
  • Promptly return the detectors to our laboratory for analysis and reporting. We recommend using an overnight delivery service like FedEx. The sooner we get your radon detectors the sooner you will have your results. Be sure to complete all required information, including start and stop times, test location, report mailing address, e-mail or fax number, etc…
  • If an elevated radon level is found, fix the house. Contact a qualified radon mitigator about lowering the radon gas level. US EPA recommends that you fix the home when any radon level is 4 pCi/L or more.
  • Be sure that you can demonstrate or provide information to ensure that the testing conditions were not violated during the radon inspection testing period.

To get more help choosing the right radon test kits for your home use our Radon Testing Wizard . Or if you know which test you need you can go directly to the order page.

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