WASHINGTON — The International Green Construction Code (IgCC) has added air curtains to its code, recognizing them as alternatives to vestibules.
Specifying air curtains as energy-saving, cost-cutting alternatives to vestibules in buildings larger than 3,000 square feet has been a recent trend among consulting engineers and architects. However, specifications are often blocked by local jurisdictions utilizing the International Energy Construction Code (IECC), which doesn’t yet sight air curtains as vestibule alternatives.