The Building You Live In
Buildings prior to the 1970’s allowed outdoor air to infiltrate indoor living spaces. Newer (improved) building practices and materials significantly reduced the exchange rate between indoor and outdoor air. These improved standards were implemented to conserve energy. However the unexpected outcome was the decrease of indoor air quality. The indoor level of pollutants may be 2-5 times higher than outdoor levels and we are spending greater than 90% of our time indoors.
The Air You Breathe
The rate of asthma like symptoms are increasing. Studies have found an association between increasing levels of indoor particulate matter pollution and the severity of asthma symptoms among children.