Film industry smoke machines were recently used on a home under construction on Alpine Court to identify places of air leakage in the structure to assure its energy efficiency, a critical element of building better. The contractors closed up the house and once the machines were running, used an infrared camera and visual checks to look for leaks. The effort to showcase leakage in Hollywood fashion came together thanks to local builders’ efforts to band together to make positive change in their industry. Built Green Canada , which works to educate builders to go beyond current code requirements, also played a role in the event.