"Radon, Basements, and Coughs: Pittsburgh's Silent Thief"

By Franklin Everett Shaw

February 28, 2026

Is that persistent cough more than just a Pittsburgh winter bug? It might be something lurking beneath your feet, seeping into your basement: radon. This invisible, odorless gas is a serious health hazard, especially in Allegheny County, and ignoring it could have devastating consequences. Let’s cut through the noise and get you equipped to protect your home and your health.

Radon is a naturally occurring radioactive gas produced by the decay of uranium in soil, rock, and water. Pennsylvania, and particularly the Pittsburgh area, is notorious for high radon levels due to its unique geological makeup, specifically the Marcellus Shale formation. This shale is rich in uranium, leading to elevated radon concentrations in the soil.

Why should Pittsburgh homeowners be particularly concerned? Our older housing stock, often built with stone foundations and poor ventilation, creates ideal conditions for radon to accumulate in basements. Think of those charming row houses in Lawrenceville or the sturdy brick homes in Squirrel Hill – many are unknowingly harboring this silent threat.

The link between radon exposure and lung cancer is undeniable. The EPA estimates that radon is responsible for approximately 21,000 lung cancer deaths each year in the United States, making it the second leading cause of lung cancer after smoking. That persistent cough, shortness of breath, or frequent respiratory infections could be early warning signs of prolonged radon exposure. Don’t dismiss them.

DIY radon testing is your first line of defense. You can purchase a short-term radon test kit at most hardware stores or online retailers for around $20-$30. These kits typically involve placing a passive collection device in your basement for a specified period (usually 2-7 days) and then mailing it to a lab for analysis.

Here’s a step-by-step guide to DIY radon testing in your Pittsburgh home:

1. Choose the Right Test: Opt for a short-term test kit for a quick assessment. Long-term tests (90 days or more) provide a more accurate annual average but take longer to yield results.
2. Prepare Your Basement: Close all windows and exterior doors in your basement for 12 hours before starting the test. This helps to stabilize radon levels.
3. Placement is Key: Place the test kit in the lowest livable area of your basement, away from drafts, high humidity, and direct sunlight. Ideally, position it at least 20 inches above the floor.
4. Follow Instructions Carefully: Adhere strictly to the instructions provided with the test kit. Incorrect placement or timing can invalidate the results.
5. Mail Promptly: After the testing period, seal the kit and mail it to the lab immediately. Delays can affect the accuracy of the analysis.

Interpreting your radon test results is crucial. The EPA recommends taking action if your radon level is 4 picocuries per liter (pCi/L) or higher. Pennsylvania follows the EPA guidelines. Even levels between 2 pCi/L and 4 pCi/L warrant consideration of mitigation measures.

Now, let’s talk about specific Pittsburgh neighborhoods. EPA data suggests that areas with older homes and specific soil compositions, such as Mount Washington, Brookline, and parts of the North Side, may have higher radon levels. This doesn’t mean every home in these neighborhoods is affected, but it highlights the importance of testing, regardless of your location.

What if your test results come back high? Don’t panic. Radon mitigation systems are effective and can significantly reduce radon levels in your home.

Here are some common radon mitigation options:

• Sub-slab Depressurization: This is the most common and effective method. It involves installing a PVC pipe through the basement floor and connecting it to a fan that vents radon gas safely outside.
• Sub-membrane Depressurization: Used in crawl spaces, this involves covering the crawl space floor with a plastic membrane and venting the space with a fan.
• Sealing Cracks and Openings: Sealing cracks in the foundation and around pipes can help reduce radon entry, but it’s usually not sufficient as a standalone solution.
• Increasing Ventilation: Improving ventilation in your basement can help dilute radon concentrations, but it may not be effective in homes with high radon levels.

Choosing a qualified radon mitigation contractor is essential. Look for contractors certified by the National Radon Proficiency Program (NRPP) or the American Association of Radon Scientists and Technologists (AARST). Get multiple quotes and check references before making a decision.

A common mistake homeowners make is attempting DIY mitigation without proper knowledge or equipment. This can be ineffective and even dangerous. Radon mitigation requires specialized skills and equipment to ensure the system is properly installed and functioning correctly. Don’t cut corners when it comes to your health.

Another pitfall is neglecting to retest after mitigation. After a radon mitigation system is installed, it’s crucial to retest your home to ensure the system is effectively reducing radon levels. This should be done within 30 days of installation and then periodically (every two years) to monitor the system’s performance.

Let’s address that persistent cough again. While radon exposure doesn’t cause a cough directly, it damages lung tissue, making you more susceptible to respiratory infections and exacerbating existing conditions like asthma or COPD. If you have a persistent cough and live in an area with high radon levels, it’s crucial to get tested and consult with your doctor.

Beyond testing and mitigation, there are other steps you can take to protect your respiratory health in Pittsburgh.

• Maintain Good Ventilation: Ensure your home is well-ventilated, especially during the winter months when windows are often closed.
• Avoid Smoking: Smoking significantly increases your risk of lung cancer, especially when combined with radon exposure.
• Regular Checkups: Schedule regular checkups with your doctor and discuss any respiratory symptoms you may be experiencing.

Radon is a serious threat, but it’s a manageable one. By taking proactive steps to test your home, mitigate if necessary, and protect your respiratory health, you can breathe easier knowing you’re safeguarding yourself and your family from this silent killer. Don’t let radon steal your peace of mind – take action today.