Many builders, renovators, and homeowners use the terms air barrier and vapour barrier interchangeably, but they perform very different jobs, even when the same material can be one or both. Learn how each system controls air movement and moisture, why confusing them can lead to condensation and durability problems, and how understanding the difference leads to better building envelope decisions.
Why Is My House Drafty
Shawna HendersonMay 13, 2026
The Real Causes of Drafts, Cold Rooms and Uneven Temperatures Most houses feel drafty because air is leaking through gaps and holes in the building enclosure. As warm air escapes through the upper parts of the house, outdoor air is pulled in through lower areas such as foundations, rim...