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Exterior Sub-Slab Depressurization Radon System

Radon Mitigation System Information

Exterior Sub-Slab Depressurization Installations are installed outside of homes or businesses and are one of the most common methods for removing radon gas.

Diagram of an exterior sub-slab depressurization system for radon mitigation.

The system works by creating a negative pressure below the home underneath the slab. The radon system’s fan is mounted to the exterior of the building where the PVC piping is installed along the side of the establishment, extending past the roof line. The system functions with the radon fan running continuously to consistently pull radon gas from the building. From the collection point established under the slab, the radon gas is collected, then drawn out using the system’s fan and routed from the building via the system’s roof stack.