Radon is a cancer-causing radioactive gas produced by the natural decay of uranium trapped within the earth’s bedrock. Small amounts of radon can be found in the air we breathe every day, but nearly one out of every 15 homes in the United States has elevated levels of radon. Overexposure to radon inside a home dramatically increases the risk of lung cancer and other illnesses. Regular testing and proper mitigation of radon gas inside the home is the key to keeping exposure to a minimum.

Step 1: All homes should be tested for radon periodically. Purchase a radon gas test kit from your local hardware store or home improvement center.

Step 2: Follow the test kit instructions. Collect air samples from the lowest level of the home. Turn off all heating and cooling systems in the home and minimize air flow during the testing period by keeping doors and windows shut as much as possible.

Step 3: Once the air sample has been collected, seal the canisters and mail them to the test kit manufacturer with the necessary forms and testing fee. Results of the test should arrive back within a week.

Step 4: If the test results show a level of 4 pCi/L (picoCurie per Liter) or higher, complete a second test to confirm the results.

Step 5: If both tests confirm elevated radon levels in the home, it is best to contact a licensed radon specialist. Call the national radon hotline at 1-800-55-Radon for a list of specialists in your area.

Step 6: Radon mitigation typically includes the installation of a vented pipe system to move the radon gas from below the home up and out of the home. Although it is possible for a homeowner to install such a system, it is recommended that the installation be done by a professional.

Step 7: Regardless of test results, reduce potential radon exposure by sealing up cracks and crevices in the home’s floor and foundation.

Step 8: Keep radon-infused dust particles to a minimum by using high quality electrostatic furnace filters throughout the year. Change the filter every 90 days or less.

Step 9: Introduce fresh air into the home regularly by opening windows and increasing ventilation when weather permits.

Step 10: Talk to your contractor about adding radon-resistant elements when building a new home or when adding a ground-level addition to an existing home.

— Have a home improvement question for the Fix-It Chick? Email it to Linda Cottin at features@ljworld.com.