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Radon in Homes Part 3 After the Test

February 4, 2017

After a radon test:

If you conduct the test yourself, be sure to promptly return the test device to the laboratory.  Be sure to complete the required information, including start and stop times, test location, etc.

If an elevated level is found, fix the home. Contact a qualified radon-reduction contractor about lowering the radon level.  The EPA recommends that you fix the home when the radon level is 4 pCi/L or more.

Be sure that you or the radon tester can demonstrate or provide information to ensure that the testing conditions were not violated during the testing period.

 

6. What should I do if the radon level is high?

a. High radon levels can be reduced.

The EPA recommends that you take action to reduce your home's indoor radon levels if your radon test result is 4 pCi/L or higher. It is better to correct a radon problem before placing your home on the market because then you will have more time to address a radon problem. 

If elevated levels are found during the real estate transaction, the buyer and seller should discuss the timing and costs of the radon reduction.  The cost of making repairs to reduce radon levels depends on how your home was built and other factors. Most homes can be fixed for about the same cost as other common home repairs, such as painting or having a new hot water heater installed. The average cost for a contractor to lower radon levels in a home can range from $800 to about $2,500.

b. How to Lower The Radon Level in Your Home

A variety of methods can be used to reduce radon in homes. Sealing cracks and other openings in the foundation is a basic part of most approaches to radon reduction. The EPA does not recommend the use of sealing alone to limit radon entry.  Sealing alone has not been shown to lower radon levels significantly or consistently. 

 In most cases, a system with a vent pipe and fan is used to reduce radon.  These "sub-slab depressurization" systems do not require major changes to your home. Similar systems can also be installed in homes with crawlspaces.  These systems prevent radon gas from entering the home from below the concrete floor and from outside the foundation.  Radon mitigation contractors may use other methods that may also work in your home. The right system depends on the design of your home and other factors. 

Radon and Home Renovations

 If you are planning any major renovations, such as converting an unfinished basement area into living space, it is especially important to test the area for radon before you begin.

If your test results indicate an elevated radon level, radon-resistant techniques can be inexpensively included as part of the renovation. Major renovations can change the level of radon in any home.  Test again after the work is completed.

You should also test your home again after it is fixed to be sure that radon levels have been reduced. If your living patterns change and you begin occupying a lower level of your home (such as a basement) you should re-test your home on that level. In addition, it is a good idea to re-test your home sometime in the future to be sure radon levels remain low.

c. Selecting a Radon-Reduction (Mitigation) Contractor

Select a qualified radon-reduction contractor to reduce the radon levels in your home.  Any mitigation measures taken or system installed in your home must conform to your state's regulations.  

The EPA recommends that the mitigation contractor review the radon measurement results before beginning any radon-reduction work.  Test again after the radon mitigation work has been completed to confirm that previous elevated levels have been reduced.  

d. What can a qualified radon-reduction contractor do for you?

A qualified radon-reduction (mitigation) contractor should be able to:

  • review testing guidelines and measurement results, and determine if additional measurements are needed; 

  • evaluate the radon problem, and provide you with a detailed, written proposal on how radon levels will be lowered; 

  • design a radon-reduction system; 

  • install the system according to EPA standards, or state or local codes; and

  • make sure the finished system effectively reduces radon levels to acceptable levels.

Choose a radon-mitigation contractor to fix your radon problem just as you would for any other home repair.  You may want to get more than one estimate.  Ask for and check their references.  Make sure the person you hire is qualified to install a mitigation system.  Some states regulate or certify radon-mitigation services providers.

Be aware that a potential conflict of interest exists if the same person or firm performs the testing and installs the mitigation system.  Some states may require the homeowner to sign a waiver, in such cases. Contact your state radon office for more information.

e. Radon in Water

The radon in your home's indoor air can come from two sources:  the soil and your water supply.  Compared to radon entering your home through water, radon entering your home through soil is a much larger risk.  If you've tested for radon in air and have elevated radon levels, and your water comes from a private well, have your water tested.  The devices and procedures for testing your home's water supply are different from those used for measuring radon in air.

The radon in your water supply poses an inhalation risk and an ingestion risk.  Research has shown that your risk of lung cancer from breathing radon in the air is much larger than your risk of stomach cancer from swallowing water with radon in it.  Most of your risk from radon in water comes from radon released into the air when water is used for showering and other household purposes.

Radon in your home's water is not usually a problem when its source is surface water.  Radon in water is more likely when its source is ground water, e.g., a private well or a public water supply system that uses ground water.  Some public water systems treat their water to reduce radon levels before it is delivered to your home.  If you are concerned that radon may be entering your home through the water, and your water comes from a public water supply, contact your water supplier.

If you've tested your private well and have radon in your water supply, it can be treated in one of two ways.  Point-of-entry treatment can effectively remove radon from the water before it enters your home.  Point-of-entry treatment usually employs either granular activated-carbon (GAC) filters, or aeration devices.  While GAC filters usually cost less than aeration devices, filters can collect radioactivity and may require a special method of disposal.  Point-of-use treatment devices remove radon from your water at the tap, but only treat a small portion of the water you use, e.g., the water you drink.  Point-of-use devices are not effective in reducing the risk of breathing radon released into the air from all water used in the home.

 

 

Southwest Florida Home Inspections preforms all types of home inspections and testing for home buyers, owners, and builders. We service all of SW Florida including Ft. Myers, Naples, Bonita Springs, Cape Coral, Estero, Sanibel and Marco Island.  We hold all required state licenses including Home Inspector, Mold Assessor, and Radon Measurement Technician. We are fully insured for all services provided. We preform mold and radon testing in house additional more specialized tests are available and can be scheduled trough us with a professional specific to those tests such as lead based paint testing, Chinese drywall testing and WDO / Termite inspections.  All inspections are conducted in a timely and professional manner with some reports available with in hours of completing the inspection. We are interNachi certified, IAQ2 Certified, NORMI Trained providing you with the knowledge and professionalism to minimize your risk of investment when purchasing a home, condo, or any other type of property in South west Florida.

Please Call, text or email us at 239-994-5810 or swflhomeinspections@icloud.com

 

We are here to help you through your inspection process and answer any questions you have before, during and after the inspection.

 

 

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