Radon Testing

Is it in your home?

Radon is the #1 cause of Lung Cancer in non-smokers. Radon is a colorless, oderless gas found normally in soil that can accumulate in enclosed spaces such as homes, schools, and workplace. Buildings with high radon levels can be remediated to reduce expose to people living and working in them.

Although smoking is the #1 cause of lung cancer, more than one in five people in Ontario diagnosed with lung cancer never smoked. The second leading cause of lung cancer is exposure to radon in houses and buildings. Secondhand smoke and asbestos are also amoung the top causes.

What is radon?

Radon is a naturally forming, radioactive, colorless, oderless and tasteless gas. It is found in almost all soil, and is produced by a natural process as uranium breaks down into radium and then in radon gas. Radon in turn breaks down into solid radiactive elements known as "Radon progeny: that attach to airborne elements.

Radon and your health

Because they are radioactive, radon and radon progeny emit alpha particles, a high-energy radiation that damages DNA in human cells and causes lung cancer. When radon is inhaled, particles become lodged in the lungs where they continue to emit alpha particles. Radon exposure is the second leading cause of lung cancer among nonsmokers in the U.S., after secondhand smoke exposure.

What can you do

Mechanism of Lung Cancer Induction

Radong and RDPs breathed in

Radon exhaled

RDPs remain stuck to lung tissue

RDPs emit alpha particles

Alpha particles strike lung cells causing physical and/or chemical damage to DNA

Alpha particles are strong enough to pit plastic

Photo: Dr. J.F. Burkhart

Plastic chip from passive radon test (alpha track)

3 months at 150 Bq/m3

Magnified only 100 times


Building codes can facilitate  Homes with high radon leve The Ontario New Home Warranties Plan Act (ONHWP Act), as amended, provides protection for Ontario estate purchasers of new homes. Every new home in Ontario is protected by mandatory warranties provided by your builder and administered by Tarion Warranty Corporation ("Tarion™").

To ensure you have a successful new home experience, there are a few things you must do to protect your home’s statutory warranty.  Your role as a homeowner is to submit warranty forms on time to the Tarion™ and the builder to ensure you're not putting your home’s statutory warranty in jeopardy. More general information on the warranty coverage can be found on Tarion™'s websitein the Homeowner Information Package. 


It is to you, the homeowner, to find and report any deficiencies in the new home. During a NCR home inspection, our Certified Master Inspector® will provide a comprehensive inspection of the home as well as a complete list of deficiencies to the homeowner. This will allow the homeowner to submit a claim to the builder or Tarion™ prior to the deadline if any issues are discovered. This makes the process faster, easier and ensures that the relevant issues which may be covered by the warranty are included for the builder to manage the repairs. In this instance, a home inspection is critical and your timing is vital as you will only have one chance to submit them within the deadline.


Contact our office to book your home inspection before you miss the deadline!