Give the measurement enough time
Health Canada recommends a long-term home radon test lasting at least three months. Follow the detector instructions and use a certified measurement professional if you hire someone. A brief reading should not be presented as the home's long-term result.
- Is the proposed test long-term?
- Who interprets the result and supplies the report?
Resolve the professional and the scope
Health Canada's Canadian guideline is 200 Bq/m³; it advises hiring a certified mitigation professional when a result exceeds that level. Confirm the named professional's current C-NRPP certification and what the proposal includes.
- Who will design and install the system?
- What sealing, electrical work and finishing are included?
- What ongoing checks and maintenance will I own?
Define success before installation
Health Canada recommends an initial performance check and a long-term test in the following fall or winter. Its reduction guide recommends independent follow-up testing to avoid a conflict of interest. Put the test responsibilities, timing and response to an unsatisfactory result in writing.
- Who arranges independent follow-up testing?
- What happens if the agreed target is not met?