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Sub-Slab Depressurization Radon System

Radon Mitigation System Information

Standard Sub-Slab Depressurization Systems are installed in homes or businesses with slab flooring. The radon mitigation system uses PVC piping which runs from the sub-slab radon collection point to the fan that is mounted on the exterior of the building. The radon gas is expelled from the building through the exterior stack that extends past the roof line.

Standard Sub-Slab System Diagram
Diagram of a typical standard sub-slab depressurization system for radon mitigation.

The standard sub-slab depressurization system works by creating a negative pressure under the home where the radon collection point has been established. The radon fan that is mounted outside of the building must run continuously in order for the system to work correctly to mitigate the radon from the home or building. From the collection chamber under the slab, radon gas is collected and the systems fan will pull the radon gas from under the home via the chamber and routes the gas safely through the exterior piping where the gas exits the building out of the radon system’s exterior stack.