Air Tightness Testing

December 18, 2023

Large Building Air Tightness Testing: Lessons Learned in a Swiftly Growing Industry​

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November 28, 2023

A Better ACH Metric for Small or Attached Canadian Homes—NLR vs ACH

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Air Barriers in Multi-Family Low Rise Housing: Are We Placing Air Barriers in the RIGHT Walls?

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October 6, 2022

Critical Canadian Home Building Science Part 7: The Great Canadian VAPOUR BARRIER controversy.

Do we still need "Vapour Barriers" made of polyethylene in high-performance walls with continuous insulation and good air barrier detailing? The industry and codes continue to struggle with this question.

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November 18, 2021

Airtightness: Do we really need to know the ACH?

A look behind the science of airtightness measurements and why this simple test is critical if you want to build high-performance homes. Learn the history, lessons learned, what are the risks of not knowing the numbers and what you can avoid if you do.

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July 15, 2021

Large Building Airtightness

Learn the science behind air tightness measurements, and what compartmentalization plays in large buildings and occupant health. Unintended consequences, lessons learned and what really happens when we don't pay attention to the numbers. Gord Cooke and Rob Johnston were joined by Scott Stevens, and provided great insights into this topic that is gaining importance and momentum.

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