RR-0303: Ventilation and Air Leakage

Effective Date

"Buildings leak water and air, which is normal and unavoidable. Therefore, designers should not fixate on preventing leakage, i.e. making buildings “airtight.” Because even if all cracks were sealed, buildings have doors and windows. How much leakage is acceptable? The author suggests as a modest goal that buildings should leak no more than the air that must be introduced for acceptable indoor air quality.