BELi is partnering with Sustainable Buildings Canada and Bawating Building Science to train building enclosure consulting firms in air tightness testing for large buildings.  The workshops are sponsored by Enbridge Natural Gas. They include hands-on setup and communication between multiple blower doors, guarded testing, and temporary sealing of HVAC vents. Along with building science concepts and review of testing standard requirements, Randy offers direct guidance unique to his workshops, such as setting projects fees and advice for avoiding potential pitfalls.