How to Identify Air Leaks That May Increase Radon Levels

November 10, 2025      

Radon is a naturally occurring gas that can pose serious health risks if it accumulates in your home. While testing is essential, preventing radon buildup starts with identifying areas where air may be entering your house. The Radon Guys recommend checking for air leaks that could contribute to higher radon levels.

Common Areas for Air Leaks

Radon can enter your home through any cracks or openings that allow soil gases to seep indoors. Key areas to inspect include:

• Gaps around windows and doors
• Cracks in the foundation or basement walls
• Openings around pipes, wiring, and ductwork
• Floor-to-wall joints or spaces under baseboards
• Even small leaks can provide a path for radon to enter and accumulate over time.

How to Check for Leaks

A thorough inspection doesn’t require expensive equipment:

• Visual Check: Look for visible cracks or gaps along your foundation and around doors and windows.
• Smoke Test: Use a smoke pencil or incense stick to detect airflow near suspected gaps.
• Professional Assessment: Certified radon professionals can perform a detailed evaluation and identify hidden entry points.

Why Sealing Leaks Matters

Sealing air leaks reduces the amount of radon that can enter your home, complementing other mitigation strategies. Combined with proper ventilation and professional radon reduction systems, leak prevention helps maintain safer indoor air and lowers long-term radon exposure risks.

Protect your home and your family.

Contact The Radon Guys today for expert guidance on testing, sealing, and reducing radon levels in your home.

< Go Back to Blog