The Mechanisms and Measurement of Air Leakage in Houses

Join Building Science Expert Trevor Trainor as he presents some simple hygrothermal modeling scenarios for standard walls across various Canadian climate zones. A bit of myth-busting along with some cautionary tales about building-to-minimum-code. A dive into why Poly as a VB (vapour barrier) is a poor choice in many regions of Canada—and the importance of vapour diffusion retarder technologies and products.

Airtightness Testing in Large Buildings

Demand for more airtight large buildings is growing. Discover whether airtightness testing in larger buildings is just a matter of scaling up the procedures for a family home or if there are significant differences.

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

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

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

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.