The Credit Human Broadway Office Development project is one of the most sustainable buildings in the United States. The air tightness barrier played a key role in achieving that level of sustainability. Read how the Joeris project team exceeded the Corps of Engineers’ standard for building air tightness (.25cfm/sf@75pa) through collaboration, pre-planning, mock-ups and a lot of quality control testing. The final air tightness readings were 0.1 cfm/sf @75pa, a success by any standard!