Radon in Basements: Why Lower Levels Are at Higher Risk

September 19, 2025      

When it comes to radon, your basement is one of the most vulnerable spots in the home—and one of the most important places to consider radon mitigation. Radon is a naturally occurring radioactive gas that forms from the breakdown of uranium in soil and rock. It’s invisible, odorless, and tasteless, which makes it especially dangerous because you won’t know it’s there without testing. Fortunately, professional mitigation systems can effectively reduce radon levels and protect your family’s health.

Basements and lower levels are at greater risk for radon buildup for several reasons. Since basements sit directly against the ground, they are closer to the source of radon seeping up from the soil. Poor ventilation allows radon to accumulate more easily compared to upper floors. Even the smallest cracks in your basement floor, walls, or around pipes can create entry points for radon. On top of this, the “stack effect” occurs when warm air rises and escapes from the upper levels of your home, creating suction that pulls radon from the ground into the basement.

The health risks of radon exposure are serious. Long-term exposure is the second leading cause of lung cancer after smoking. Because basements often serve as living spaces, home offices, or playrooms, families may be unknowingly exposed to harmful levels of radon for hours at a time.

The best way to protect your home is to test your basement for radon regularly and address any cracks or openings in foundation walls and floors. If levels are above the EPA’s recommended limit of 4 pCi/L, installing a professional radon mitigation system is the most reliable solution.

At The Radon Guys, we specialize in identifying and reducing radon levels to keep your home safe and healthy. Whether you use your basement as storage or a living space, protecting it from radon is one of the most important steps you can take for your family’s health.

Schedule your radon test with The Radon Guys today and gain peace of mind this season.

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