Radon is the second leading cause of lung cancer
Radon is an odourless invisible gas that is produced naturally by the decay of the element of uranium. On average about six atoms of Radon emerge from every square inch of soil per second. In the air, Radon is diluted to about 2 picocuries per litre of air which is not dangerous but in concentrations, it has been found to cause lung cancer.
Radon gas can enter a house through a soil floor or through any crack or hole in or around the basement.
Since prevention is better than cure it would be wise to prevent any Radon from concentrating within the house. This can be done in two ways.
First, by sealing up any crack or hole in the basement wall and covering any earth floor with plastic sheeting. There are companies that specialize in Radon protection sealing.
The second is to increase the ventilation in the house so that concentrations cannot build up. All houses should have a complete air change every three to four hours. This level of air change has been found to be the most economical balancing air quality with heating costs.
Supplying adequate air is very simple. A window opened in each room is a good, cheap method but not too practical since it will allow cold air to enter. A better solution is a Plusaire correctly sized for the house. It will supply not only adequate ventilation air but also combustion air to compensate for any of the combusting appliances that burn up the oxygen in the house.