What is the minimum height above roof for a single radon vent pipe?

The minimum height above the roof for a single radon vent pipe is 12 inches. This requirement helps ensure that the vent pipe effectively dissipates radon and any other gases below the roofline, allowing for proper ventilation and reducing the risk of radon re-entering the structure. The 12-inch height is specified to prevent potential obstructions and to promote better air flow, thus enhancing the efficacy of the ventilation system.

Additionally, having the vent pipe at the proper height minimizes the possibility of wind turbulence around the pipe, which could otherwise affect the performance of the radon mitigation system. By maintaining this height, the design aligns with best practices for radon mitigation and health safety standards, ensuring that any radon gas is adequately vented away from the living spaces beneath the roof.