Home Inspection Tips – Lowering Radon Levels

Home Inspection Tips - Lowering Radon Levels

Radon is a naturally occurring gas that can enter homes through the foundation or crawl space, and it is a leading cause of lung cancer. It is odorless, colorless, and tasteless, making it difficult to detect without proper testing. Homeowners can take steps to lower radon levels in their homes through regular home inspections and implementing appropriate mitigation strategies. In this article, we provide ten home inspection tips for lowering radon levels in your home.

Test for Radon Levels

  • Radon is a colorless and odorless gas that can seep into your home through cracks in the foundation or walls.
  • Testing for radon levels is the only way to determine if your home has elevated levels of this harmful gas.
  • The EPA recommends testing your home for radon at least once every two years.
  • Radon levels can vary significantly from day to day and season to season, so regular testing is essential.
  • If your test results indicate high levels of radon, consider retesting or hiring a professional for mitigation services.

Seal Foundation Cracks

  • Foundation cracks can allow radon gas to enter your home, so it’s essential to seal them.
  • Use a high-quality caulk or sealant to fill any visible foundation cracks, paying particular attention to the basement or lowest living area of your home.
  • You can also install a foundation drainage system to direct water away from the foundation and prevent cracks from forming.
  • Hire a professional if you are not comfortable sealing foundation cracks or if the cracks are extensive.
  • Keep in mind that sealing foundation cracks alone may not be enough to lower radon levels significantly.

Install a Vapor Barrier

  • A vapor barrier is an effective way to prevent radon gas from entering your home through the foundation or walls.
  • A vapor barrier should be installed in the basement or crawl space of your home, covering both the floor and walls.
  • Use a high-quality vapor barrier material that is at least 6-mil thick.
  • Ensure the vapor barrier is installed tightly and sealed at all seams.
  • Consider hiring a professional for vapor barrier installation if you are not comfortable doing it yourself.

Increase Ventilation

  • Good ventilation can help reduce radon levels in your home by diluting the concentration of radon gas.
  • Open windows and doors regularly to allow fresh air to circulate throughout your home.
  • Use exhaust fans in bathrooms and kitchens to remove excess moisture and improve ventilation.
  • Consider installing a heat recovery ventilator (HRV) to bring in fresh air while simultaneously removing stale air.
  • Keep air vents and ducts clean and unobstructed to ensure proper air flow.

Use a Radon Mitigation System

  • A radon mitigation system is a highly effective way to reduce radon levels in your home.
  • The system works by creating a vacuum that pulls radon gas from beneath your home and expels it outside.
  • A radon mitigation system should be installed by a professional, as it requires specialized knowledge and tools.
  • The cost of a radon mitigation system varies depending on the complexity of the system and the size of your home.
  • Once installed, the system should be checked periodically to ensure it is functioning properly.


In addition to the information provided earlier, it’s important to consider consulting with a radon expert to ensure that you have a comprehensive understanding of the risks associated with radon exposure in your home. A radon expert can provide additional guidance on how to reduce radon levels in your home, assess the effectiveness of existing mitigation measures, and help you choose the most appropriate mitigation system for your home.

It’s also worth noting that some states require radon testing or mitigation measures as part of real estate transactions. If you are buying or selling a home, it’s a good idea to check if your state has any specific requirements or guidelines for radon testing and mitigation.

Finally, remember that radon is a serious health risk that cannot be ignored. By taking proactive steps to reduce radon levels in your home, you are investing in the health and safety of yourself and your loved ones. Don’t hesitate to reach out to a radon expert or local authorities if you have any questions or concerns about radon levels in your home.