Failing Radon System
The U-tube manometer on the existing radon mitigation system displayed equal pressure levels on both sides, indicating that the radon fan was not generating sufficient suction at the extraction point. This lack of differential pressure suggests the system is not actively drawing radon from beneath the home, thereby increasing the risk of radon exposure. Under normal operating conditions, the manometer should show a noticeable pressure difference-typically with one column higher than the other-demonstrating that the fan is effectively pulling radon-laden air from the sub-slab area and venting it safely outside.
Radon Pipe Above Roofline
The piping configuration above the radon fan was found to be properly installed and functioning optimally, requiring no modifications. However, the radon fan itself, along with the interior piping, needed replacement to restore full system performance. Upgrading these components ensures effective radon extraction and maintains compliance with mitigation standards, thereby reducing the risk of radon exposure within the home.
New Radon Pipe
PVC piping was securely connected to the radon extraction point using NexusPro®, a high-performance sealant engineered for long-lasting adhesion and flexibility. The pipe was then routed to the exterior of the home, forming a sealed and efficient pathway for radon gas to be safely vented outside. This installation ensures system integrity and minimizes the risk of air leakage or re-entry into the living space.
New Radon Fan
Once the PVC piping reached the exterior of the home, a radon mitigation fan was installed to actively draw radon gas from the sub-slab extraction point. The fan creates negative pressure beneath the foundation, channeling radon through the piping and safely venting it above the roofline-well away from windows, doors, and other potential re-entry points. This configuration ensures effective radon dispersion and helps maintain indoor radon levels within the safety thresholds established by the EPA and WHO.
