Radon mitigation

Radon mitigation involves reducing the movement of naturally occurring radon gas from the ground into a building. The two main approaches used in reducing radon levels are passive and active

systems. 

Passive radon systems

Passive systems rely on natural air movement and pressure differences to safely vent radon from beneath a building. They typically include:

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• A radon resistant membrane installed across the footprint of the structure

• Sealed service penetrations and airtight detailing

• A passive ventilation stack that allows radon to disperse naturally above roof level

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These systems require no power and are often used in new build properties where radon levels are expected to be moderate.

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Active radon systems

Active systems use mechanical assistance to increase extraction efficiency. This includes

an electric fan connected to the ventilation stack to create continuous negative pressure.

Active systems are typically used in higher‑risk areas or where passive measures alone are not sufficient.

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Annual maintenance and repair

Does your domestic or commercial property have a radon mitigation system installed? ​Without regular maintenance and testing, radon levels can return to unsafe concentrations, effectively negating your original investment and leaving occupants at risk.