What are the major potential entry sources of radon in a home?

Radon is a naturally occurring radioactive gas that can accumulate in homes, particularly those with certain structural characteristics. Each of the identified sources plays a significant role in the potential entry points for radon gas.

Cracks in concrete floors can act as pathways for radon to seep into the home from underlying soil or rock. These cracks may be the result of settling, shifting, or simply the natural aging process of the concrete, allowing radon gas to escape from the ground below.

Floor drains are another entry point for radon, especially if they are connected to the ground. If there is no airtight seal around these drains, radon can travel through the plumbing and enter the living space. Additionally, if the floor drains are not properly sealed with water locks, they can significantly increase the risk of radon infiltration.

Drainage sumps, which are designed to collect water and prevent flooding, can also facilitate radon ingress. Since these sumps penetrate the ground, they can serve as a direct conduit for radon gas to rise into the home. If airflow around these sumps is not adequately managed, they can become significant sources of radon entry.

Recognizing that all these components can contribute to radon accumulation, the correct choice encompasses all potential entry