FEATURE

Choosing SPF as an effective air barrier component

With varying degrees of detail and prescription, Canadian building codes—regardless of the model code—require all buildings to be provided with an air barrier. Where the language is more performance-oriented, such as in Part 5 of the National Building Code of Canada (NBC) and Part 3 of the National Energy Code of Canada for Buildings (NECB), key concepts such as “system” and “continuity” are introduced as well as quantitative criteria.
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FEATURE

Gypsum industry hit with new Canadian duty case

Dumping is a form of international price discrimination, in which the price of the product when sold in the importing country is less than the price for the same product in the exporting country’s market. Anti-dumping laws are intended to protect Canada’s domestic industry against unfairly traded goods from other countries. Find out how a new situation involving gypsum board could affect you.
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FEATURE

Understanding the Canadian Air Barrier Standards

During the 1970s, extensive research was carried out in Canada on air leakage in buildings. Researchers at the National Research Council (NRC) demonstrated the importance of managing air leakage through the building enclosure. In the following decade, the concept of air barrier material emerged and was formally introduced in the 1985 edition of the National Building Code of Canada (NBC).
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