If your home has elevated levels of radon above the U.S. Environmental Protection Agency’s (EPA) recommended action level of 4.0 picocuries of radon per liter of air (pCi/L), then a radon reduction system (often referred to as a mitigation system) should be installed.
Fortunately, mitigation system cost no more than other common home repairs, ranging from $800 to $1,200.
The method of mitigation depends on the type of foundation your home has. Methods differ for basements, crawl spaces, engineered floors, slab on grade, or any combination of these foundations. See the photo gallery for examples of correct and incorrect practices.
Hiring a Contractor
If you wish to hire a contractor, use a certified radon mitigation contractor who is trained in proper and effective radon mitigation. Consider using the EPA checklist for selecting a contractor.
Tips for Hiring a Contractor
- Ensure the contract stipulates that the contractor will follow all EPA protocols regarding radon mitigation and will obtain all applicable local permits.
- Get bids from multiple contractors.
- Obtain a guarantee that radon levels will be reduced to 4.0 pCi/L or below.
Installing a Mitigation System Yourself
If you decide to mitigate yourself, information about mitigation system installation and design is available in the manual Protecting Your Home from Radon, a Step-by-Step Manual for Radon Reduction by D. L. Kladder. It explains everything you need to know about fixing a radon problem in your home.