By Robert Field
Below is information from federal EPA and Wikipedia concerning the dangers from radon radiation. Our region and most of Pennsylvania (and much of the USA) are classified asmin the danger zone.
Map of Radon Zones in Pennsylvania based on Environmental Protection Agency (EPA) data
Map of Radon Zones in the United States based on Environmental Protection Agency (EPA) data
The invisible menace, toxic fumes in your home
My observations: The best precaution may be increasing circulation of fresh air. A major problem has been the super insulation of homes, especially new structures, thus trapping radon and other toxic fumes from various sources within the residence.
Earlier generations had coal heat and thus slept with windows partially opened a good bit of the time to control temperatures..
When tests for radon levels are run with windows partially open, levels are far lower, usually within the lower, comparatively safe levels. Tests usually require that all doors and windows be closed.
So why not allow some small amount of outside air circulation in the basement or on the first floor to protect against radon and toxic fumes, especially with homes with wall and attic insulation?
This is basically is what expensive remediation efforts accomplish, when they continue to function.
I regret now the extensive means we went to in our latter apartment complexes in sealing around openings to the exterior. We were obsessed with saving energy and unaware about saving lives.