A frozen radon exhaust: the fan can look fine and do nothing
Ice in the pipe or on the roof outlet stops the airflow. The manometer no longer shows the usual pressure. Do not chip the ice off the fan.
Oct 26, 2026
Scientific Articles
108 articles
Radon fan noise: a hum is normal, a rattle is not
A small fan in the attic or outside the wall makes a steady sound. Vibration against a joist, or a whistle at a joint, is a service call....
Oct 26, 2026
One radon system for two units: the slab decides, not the lease
Two apartments on the same slab can share one suction point. Two separate foundations need two. The quote says which, after a look, not f...
Oct 26, 2026
Semi-detached homes and radon: the neighbour’s result stops at the wall
A party wall does not share the gravel under the slab. One side at 80 Bq/m³ does not clear the other. Each occupied lowest level is teste...
Oct 26, 2026
A basement bedroom and radon: that is the room that counts
Health Canada wants the lowest lived-in level, where someone stays more than four hours a day. A bedroom on the slab is that room. The up...
Oct 26, 2026
Split-level homes and radon: test the lowest room someone uses
A split has several floors that touch soil. The detector goes in the lowest room occupied more than four hours a day, not on the landing ...
Oct 26, 2026
Slab on grade and radon: there is no basement, there is still soil
A bungalow on a slab sits on the same gravel as a house with a basement. The gas enters at the joints and around the pipes. The test is d...
Oct 26, 2026
Radon questions: the short answers, then the test
Odour, plants, a neighbour’s result, a new house, summer. None of these replaces a measurement in the room where you sleep.
Oct 25, 2026
Humidity and radon: a dehumidifier does not pull the gas out
Moist air and radon can share a basement. Drying the room does not create suction under the slab. The test is still done in the occupied ...
Oct 25, 2026
Radon in the garage: the guide does not test where nobody lives
Health Canada places the detector in an occupied room, more than four hours a day. A garage is excluded unless someone actually lives the...
Oct 25, 2026
Home insurance and radon: the policy is not a measurement
A radon result does not work like a fire alarm. Ask the insurer what they want to see. The number itself still comes from a test of at le...
Oct 25, 2026
Who pays in a condo: the slab is often a common element
A unit owner can test their own bedroom. The pipe through the roof usually crosses common property. The declaration and the board decide ...
Oct 25, 2026
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