Inside the Envelope

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As the urgency to combat climate change grows, U.S. cities are implementing policies to reduce...

Did you know that the Canadian Supplement to NAFS excludes buildings on hills, escarpments, and...

Depending where you are in Canada, there may be more than one acceptable method for...

The building code recognizes that it is not always practical to test every single window,...

Net-zero is typically defined as a building that produces as much energy as it consumes...

In celebration of Women’s Equality Day, we spoke with Kristen Yee Loong, Energy and Sustainability...

Every year, the Passive House community comes from all over the world to gather at...

The 2008 edition of NAFS first appeared in Canada in the 2010 National Building Code,...

In 2015, the Seattle Energy Code saw increased strictness in airtightness requirements with the maximum...

Over the course of its service life, a building’s façade endures monumental environmental forces including...

Note: The public review has now ended. NAFS, the North American Fenestration Standard, is jointly...