What is the primary use of non-thermal smoke in radon mitigation processes?

The primary use of non-thermal smoke in radon mitigation processes is to determine the direction of airflow. By introducing non-thermal smoke into an environment, it visually demonstrates how air is moving within a space. This is critical for understanding how radon gas may be infiltrating a building and where to focus mitigation efforts.

Analyzing airflow direction aids in identifying areas where radon might enter and helps in designing effective mitigation strategies, such as the proper placement of fans and vents. This visual tool is invaluable for practitioners as it provides immediate feedback on how air circulates around structures, ensuring that the mitigation system will function as intended to prevent radon accumulation.