> Does Ontario not have any of those requirements for commercial or residential? Last time I checked it no air leakage testing is mandated: * https://www.barr

> Does Ontario not have any of those requirements for commercial or residential? Last time I checked it no air leakage testing is mandated: * https://www.barriersciences.com/blog/potential-changes-ontario-building-code https://www.barriersciences.com/blog/potential-changes-ontar... * https://www.reminetwork.com/articles/canada-wavers-on-airtightness-testing/ https://www.reminetwork.com/articles/canada-wavers-on-airtig... I'm not in the industry, so only know about the rough outlines through casual interest.