Radon Suction for buildings with ground radon
For buildings on non‑permeable soil, such as bedrock or blasted stone fill, we recommend radon suction as an effective alternative.
Radon suction also works by lowering the air pressure in the ground beneath the building. A fan extracts air from one or several points under the concrete slab. The fan is installed on the roof, in the basement, or on an exterior wall and connected via ductwork.
Radon suction requires structural modifications, including drilling through the slab and installing ducts connected to a fan.
Extraction capacity should be limited to a maximum of 50 m³/h to avoid cold floors and the risk of frost heave.
A radon suction system has low operating and installation costs and reduces indoor radon levels by 10–80%.
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