Lend Lease was on a mission: To get 3,600 new and existing homes in the Fort Drum Mountain Community ENERGY STAR® certified. To do so, they knew they had to reduce duct system leakage of each home from an average of 20-30% down to 5% or less. After several attempts with various methods of duct sealing, they found only one thing worked – Aeroseal. Today, the Fort Drum Mountain Community is the largest New York ENERGY STAR (NYSERDA) certified community in the history of New York State.