The Canadian Cancer Society is raising the alarm over radon levels in homes. It is interesting that the strongest evidence linking radon to lung cancer comes from studies of Chilean miners exposed underground, a very confined situation.
Having gone through a radon mitigation process in the U.S., I can attest that the process is expensive involving more than “some sort of valve”. A fan must draw air from below the basement to the roof; it runs constantly (think white noise). If only 5% of Ontario homes have high radon levels, why would we want to build this feature into all new homes?
Karen Maxwell
