Daycares and radon: the nap room is the occupied zone
A child who sleeps there more than four hours a day puts that room in the Health Canada definition. The hallway and the kitchen are not t...
Oct 25, 2026
Scientific Articles
108 articles
The neighbour tested: their number is not your address
Two houses on the same street can differ by the slab, the sump and how long the windows stay shut. The survey describes a health region. ...
Oct 25, 2026
Radon after renovations: the old report describes the old house
New windows, a finished basement or a sealed sump change the paths. Retest for at least three months in the heating season, in the room p...
Oct 25, 2026
Snow and the radon exhaust: the outlet has to stay clear
The pipe ends above the roof so the gas leaves the house. A buried outlet sends it back toward windows and soffits. Clearing snow off the...
Oct 25, 2026
A stopped radon fan: the pipe alone is not the system
If the fan is off, the suction stops. The manometer is the first check. Restarting it is an electrician’s or installer’s job when the cau...
Oct 25, 2026
The first winter in a new home: the rough-in is still not a result
A new house is tight. The little radon that enters stays inside. The first heating season is the time for a 91-day test in the lowest liv...
Oct 25, 2026
Connecting a radon rough-in: the cap means it is not working yet
The pipe in the garage or a closet is a starting point. Until a fan, a roof outlet and a manometer are in place, radon enters as if the p...
Oct 25, 2026
Passive or active radon system: the fan is what you can adjust
A passive pipe can move a little gas. An active fan makes the suction reliable in summer and winter. If the bedroom stays above 200, add ...
Oct 25, 2026
Wood stoves and radon: the fire pulls air, the soil supplies the gas
A strong draft replaces indoor air with leaks, including from the basement. The level can rise while the fire burns. The wood is not the ...
Oct 25, 2026
Radon or carbon monoxide: two gases, two devices
Carbon monoxide comes from combustion and can harm you the same day. Radon comes from uranium in the soil. A hardware-store CO alarm does...
Oct 25, 2026
Radon’s half-life: about 3.8 days, and the soil keeps sending more
Half of the atoms decay in about 3.8 days. The basement is not clean a week later. The solid decay products, stuck to dust, are what irra...
Oct 25, 2026
An invalid radon test: the report describes where the detector sat
A drawer, a window sill, a bathroom, the top of the fridge or a sunny ledge is not the occupied zone. Opening the house to “live safely d...
Oct 25, 2026
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