A Tighter House is a Greener House

The U.S. Department of Energy calculates that air infiltration accounts for roughly half of all energy used in heating or cooling a home. Wind pressure and stack effect on buildings with air filtration problems can create pressure imbalances and lead to airborne humidity, corrosives and contaminants that can do untold damage to insulation, brickwork, cladding and decorative facings. According to the National Research Council of Canada, faulty air barriers can lead to uncomfortable indoor environments, high heating and air conditioning costs, and accelerated decay of building materials.