NBC The on-going development of building code requirements to address low air and vapour permeance materials

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Conference10th Canadian Conference on Building Science and Technology "Building Science and the Integrated Design Process": 12 May 2005, Ottawa, Ontario
Pages4858; # of pages: 11
Subjectair leakage, vapour diffusion, vapour permeance, hygrothermal modeling, mild cliamte indicator, relative humidity, building code; Codes & guides
AbstractPart 9 of the National Building Code (NBC) provides, in Article, requirements that identify where low air and vapour permeance materials can be located in building envelope assemblies depending on the position of the thermal insulation in the assembly and the climate at the building site. The provisions to be included in the 2005 NBC have evolved over many code development cycles as issues have become more clearly identified. This paper briefly outlines the development of the requirements up to those included in the 1995 NBC and discusses in more detail the basis for the changes to be included in the 2005 Code. Various questions still remain for investigation in the future; some of these are identified.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number47656
NPARC number20377496
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Record identifier1b3c3eda-1374-42bc-b20c-d031912b7d41
Record created2012-07-24
Record modified2016-05-09
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