Radon Gas – Testing & Mitigation

What is Radon?

  • Radon is a naturally-occurring gas that is a by-product of the decay of uranium into lead.
  • Radon is colourless, odourless and tasteless.
  • Radon bonds to solids in the air, such as dust particles, and can easily be inhaled.
  • Second to smoking, radon is the next leading cause of lung cancer in Canada.

How does Radon Enter a Home?

  • Any part of the building that’s in contact with the ground is a potential entry point for radon.
  • Entry points include foundation wall and floor cracks/penetrations, construction joints, sump pumps and floor cleanouts.
Radon Enter a Home

  • As hot air rises in a home (the stack effect), air is drawn into the basement from the ground.
Hot air in home

Radon Detection and Testing

  • Radon testing is low cost and should be completed by qualified professionals.
  • There are two types of tests, a short- and a long-term test. The short-term test is 2-7 days, while the long-term test takes a minimum of 91 days.
  • Health Canada has established guidelines to determine what an acceptable level of radon is in a home.
  • Health Canada always recommends following a positive short-term test with a long-term test to confirm the validity of the short-term test results.
  • With radon levels higher than 200 Becquerels per meter cubed, or 200 Bq/m3, a radon mitigation system should be installed.
  • Short-term tests can be useful in certain situations, such as a real estate transaction.
NOTE: Even with low levels of radon, prolonged exposure can lead to increased health risks. Order a radon testing kit.

Radon Mitigation

  • Mitigation is most commonly achieved by installing a sub-floor depressurization system (Radon-Evac System).
  • Radon-Evac System is a pipe and fan system that draws gases released from the soil up and out of the home.
  • Radon-Evac Systems relieve gas pressure and prevent radon from entering the home.
  • The sump liner can be used to install the depressurize system.
Radon mitigation

Request a free estimate from the certified radon professionals at Basement Technologies Calgary.

Certified Radon Professionals

To find out more about radon, see Health Canada’s guide to Radon reduction.
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