Radon can enter our homes through any opening that is in contact with the ground. In this article, we will explain how radon in the soil can seep through homes and how it can become harmful to your health. According to the Canadian National Radon Proficiency Program, 16% of lung cancer deaths are attributable to radon (PNCR-C).
Radon in a few words
Radon is a radioactive gas that forms from the decay of uranium in the earth’s crust. It is everywhere in Canada (Health Canada 2021).
In outdoor air, radon is harmless to lung health. However, in enclosed spaces such as homes, the gas can accumulate to concentrations that are hazardous to lung health, especially during long heating periods when doors and windows are closed such as winter season.
Radon in Homes
Radon gas enters homes through various possible cracks that are in touch with the soil, such as;
- Cracks in foundation walls
- Sinks and cavities in the walls
- Gaps around pipes
- Joints between the slab on grade and the foundation wall
- Floor slabs
- Supporting studs
- Window frames
- Floor drains
Air pressure: An important factor
The difference in pressure between outside and inside air makes it easier for radon in the soil to enter our homes. The air pressure inside the house is generally lower than the air pressure outside. With openings near the ground, the air pressure wants to balance out. The outside air enters the house with the suction of the air. Many gases are drawn in such as radon (Health Canada 2021).
One would think that radon would seep into older homes, but it can still accumulate in new constructions. In a new construction, the risk is related to the airtightness of the house which prevents the gases from dissipating.
Conclusion
One would think that radon would seep into older homes, but it can still accumulate in new constructions. In a new construction, the risk is related to the airtightness of the house which prevents the gases from dissipating.
