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Effective Interventions to Reduce Indoor Radon Levels
Radon represents one of the environmental exposures that can be reduced with effective and practical solutions, reducing an individual’s risk of developing lung cancer. There is extensive literature supporting the cost-effectiveness of radon abatement compared with other healthcare and environmental interventions. Of the remediation measures evaluated to reduce indoor radon levels in already built homes, active systems were found to be better than passive ones.
- Depressurization methods were the most effective remediation measures.
- Active ventilation measures were the next most effective; passive ventilation was less successful.
- Sealing (alone) was found to be the least effective method.
In the case large buildings or of dwellings having high radon levels, combination remediation strategies have been found to be more effective than single measures. In new home construction both barrier membranes and block and beam construction have been demonstrated to be effective in reducing indoor radon levels to below the current Canadian guideline action level (200 Bq/m3).
- Barrier membranes have been found to reduce indoor radon levels by up to 50%.
- Block and beam construction have been found to reduce indoor radon levels by up to 50%.
- Barrier membranes used together with block and beam construction combine to reduce indoor radon levels by substantially greater amounts
|Publication Date||Dec 24, 2008|
|Posted by NCCEH||May 26, 2009|