Making the Air Tightness Goals

Dean Butterwick of Butterwick Building Company Ltd and D’Arcy Dunal, Architect, teamed up recently to build a beautiful home just outside of Bala, Ontario.


Using a double wall and the zip sheathing system, the lads a Butterwick were able to get to 1.00ACH50 and the windows wern’t even in yet. It’s rare that pre-drywall air tightness tests go so well and finally, after a year of hauling a bag full of lays, I had the chance to celebrate with the crew in producing a great result! Congrats to Project Manager Ian for paying very close attention to details, there weere alot of them in this build.