Radon Mitigation

 

How do I reduce the Radon levels?

Action to reduce the radon level should be taken in a home whenever the average annual concentration exceeds 200 Bq/m³ and should be reduced to a value as low as practicable.

The higher the  concentration, the sooner reduction measures should be undertaken.

If your home tests above the guideline you should hire a certified radon professional to determine the best and most cost effective way to reduce the radon level in your home. The most common  reduction method is called sub-slab depressurization. With this solution a pipe is installed through the basement sub-flooring to an outside wall or up through to the roof line with a small fan attached which draws the radon from below the house to the outside before it can enter your home. This type of system can reduce the radon level in a home by over 90%. Increasing ventilation and sealing major entry routes can also help reduce radon levels but their effectiveness will be limited depending on how high the radon level is and the unique characteristics of each home.

Examples of venting options for active sub-slab depressurization

Below is an example of a sub-slab depressurization system installed on a home in Cochrane, AB.  The initial levels in this home were 220Bq/m³, following installation of the system the radon level dropped to 14Bq/m³.

Radon System 1Radon System 2Radon System 4

 

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