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A field monitoring investigation of the effect of adding different exterior thermal insulation materials on the hygrothermal response of wood-frame walls in a cold climate

From National Research Council Canada

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Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Article
ConferenceBEST2 Conference (Building Enclosure Science & Technology): 12 April 2010, Portland, (OR), USA
Subjectinsulation; energy retrofit; field testing; wetting and drying; Building envelope
Abstract
This paper will present and discuss monitoring results of this study, comparing the hygrothermal response of the 3 side-by-side test wall assemblies. The results showed that adding some thermal insulation on the exterior of an insulated stud cavity can contribute to reducing the duration of the potential for interstitial condensation but events of condensation can still take place during the coldest period of winter in a climate such as Ottawa (when other essential contributing factors are in place). Results indicated that the air and vapour permeance of the exterior insulation materials not only affected the flow of moisture to the outside during wintertime periods of air exfiltration but also affected moisture inwards flow during humid early summer conditions.
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  • BEST2 Conference (Building Enclosure Science & Technology): 12 April 2010, Portland, (OR), USA [Proceedings] (12 April 2010): 1–15.
LanguageEnglish
Peer reviewedYes
NRC numberNRCC 53586
NRC-IRC-21269
NPARC number20373875
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Record identifier497102c6-d2bb-4efb-aae4-8058d45e99cf
Record created2012-07-23
Record modified2020-07-14
Date modified: