What is one common indicator of radon presence in a home?

The presence of cracked foundations can serve as a common indicator of radon in a home. Radon is a naturally occurring radioactive gas that can seep into buildings from the ground, and its movement is often facilitated through fissures and cracks in the foundation. Homes with cracks in their walls or floors may provide pathways for radon to enter, making it a significant concern for radon exposure.

While other factors like strange odors, low humidity levels, and increased air pressure may influence indoor air quality, they are not specifically linked to the presence of radon. This makes cracked foundations a more relevant and direct indicator when assessing the potential for elevated radon levels in a home. Recognizing such structural vulnerabilities is an important step for homeowners to take when considering radon testing and mitigation.