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    Homeowners

Radon and Your Warranty

Radon is an invisible, odourless, naturally occurring gas found in soil. It seeps into homes through cracks in floors, walls and foundations – access points mainly found in basements.  Since radon is naturally occurring, it’s  found in just about every home. 
However, high concentrations of radon in a home may pose health risks.  Health Canada says that people exposed to radon levels in excess of 200 Becquerels per cubic metre (becquerels are a unit of measurement for radioactivity) over long periods of time have a higher risk of developing cancer.

The good news is that the new home warranty in Ontario, provided by your builder and administered by Tarion, provides coverage if excessive radon levels are found in your home.  Ontario is the only jurisdiction in Canada where the builders’ warranty on new homes includes radon remediation coverage. The warranty covers remediation of radon gas in excess of 200 Becquerels per cubic metre and coverage lasts for up to seven years

Testing Your Home for Radon

If you are concerned, there are two ways to test for radon: Buy a do-it-yourself radon testing kit or hire a radon measurement or mitigation professional. Both options must be certified through the Canadian National Radon Proficiency Program to be eligible for coverage under the new home warranty.

Making a Warranty Claim for Excessive Radon

If the test results you receive from a certified lab indicate that the radon level in your home is above 200 Becquerels per cubic metre, contact your builder and allow them an opportunity to address the situation.  You can also make a claim to Tarion based on the warranty period you are in:

  • If you are in your first year of possession of your new home, submit a 30-Day or Year-End Form.
  • If you are in your second year of possession of your new home, submit a Second-Year Form.
  • If you are in years 3-7 of possession of your new home, submit a Major Structural Defect Form.
    

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