In Canada, the requirement for the 1/300 vent ratio first appeared in the 1953 National Building Code (NBC) and it did not make any distinction between structures with flat and sloped roofs.
Tag: Thermal Insulation
All building insulation types save energy throughout the use phase of buildings by minimizing the heat transfer (cold/hot) through the building enclosure. The insulation installed within the building enclosure must be used effectively to...
Control layers explored in latest supplement
(03/13/2020)
The magazine’s series of digital supplements continues with a focus on control layers for building enclosures.
Using SPF insulation in zero-net energy buildings
(01/05/2018)
Use of two-pound, medium-density closed-cell sprayed polyurethane foam (SPF) is growing rapidly in commercial structures. Utilization of the material has been fuelled in large part by its ability to seal the structure and, in...
Better blankets for greener buildings
(04/20/2016)
The scientific community has virtually agreed the planet’s atmosphere is changing due to greenhouse gas (GHG) emissions generated by human activities. The Paris Conference’s agreement, within the structure of the United Nations Framework Convention...
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May 2025