Radon testing guides

Le radon est un gaz radioactif qui se forme dans le sol quand l’uranium se dégrade. Il entre par les fissures de la fondation et les joints des tuyaux. L’isolation et une maison étanche le retiennent à l’intérieur. Des années d’exposition causent le cancer du poumon, et ce gaz reste méconnu. Utilisez la recherche pour les mots que les gens cherchent : gaz radioactif, uranium, fondation, maison étanche, cancer du poumon, becquerels.

Selling a house with high radon

A written test and a system already installed are what a buyer can read. “We air it out” is not a number.

26 oct. 2026

Frozen radon exhaust: when frost closes the outlet

In a hard freeze, frost can choke the pipe above the roof. The manometer falls. Clear it. Do not turn the fan off.

26 oct. 2026

Radon fan noise: a hum, not a dryer

A fan on flexible hangers is quiet. A rattle is usually the pipe, the mount, or a bearing.

26 oct. 2026

One radon fan for two units: only if the slab is shared

A duplex or a semi needs a test in each home. One fan is a conclusion, not a guess from the floor plan.

26 oct. 2026

Radon in a semi-detached house: the party wall does not share the result

Two units under one roof can differ because of the sump, the slab and how long the windows stay shut.

26 oct. 2026

Radon in a basement bedroom: that room comes first

A bedroom below grade is used all night, closest to the slab. It is the first place to test.

26 oct. 2026

Radon in a split-level: which floor is the lowest lived-in level

The lowest floor where someone sleeps or stays more than four hours is the test floor.

26 oct. 2026

Radon in a slab-on-grade house: no basement, still a test

Without a basement, the test goes in the main-floor room someone uses more than four hours a day.

26 oct. 2026

Radon questions in Canada, one answer each

The index of the practical guides. Each link answers a single question.

25 oct. 2026

Radon half-life: 3.8 days, and why the basement does not “air itself out”

The decay products, not the gas alone, are what reach the lung.

25 oct. 2026

Radon in the garage: that is not where you test the house

An attached garage can be a path. It is not the detector location.

25 oct. 2026

Home insurance and radon: usually not a sudden claim

Read the policy. Do not assume an all-risk form covers soil gas.

25 oct. 2026

Chargement