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Performance issues with muntin bars in sealed insulating glass units

From National Research Council Canada

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DOIResolve DOI: https://doi.org/10.4224/40002841
AuthorSearch for: 1
Affiliation
  1. National Research Council of Canada. NRC Institute for Research in Construction
FormatText, Issue
Physical description4 p.
SubjectMoisture performance
Abstract
Muntin bars are the strips of, say, aluminum or vinyl, that are inserted between the sheets of glass of an insulating glass unit (IGU) -- to give the Colonial look. It comes with a price: reduced R-value and reduced interior glass surface temperature, hence reduced condensation resistance of an IGU, all because the muntin bars cause thermal bridging. Furthermore, under ultraviolet radiation, they also cause fogging, i.e., volatile materials evaporate and then condense on the glass. This is not to imply that an IGU should go without muntin bars, because there are ways of avoiding possible problems.
Publication date
PublisherNational Research Council of Canada. Institute for Research in Construction
Series
  • Construction Technology Update, no. 28 (1 December 1999).
Translation of
  • Elmahdy, A. H. ‘Influence Des Croisillons Sur La Performance Des Vitrages Isolants’. Conseil National De Recherches Du Canada. Institut De Recherche En Construction, 1 December 1999. .
LanguageEnglish
Peer reviewedNo
NRC numberNRC-IRC-9867
NPARC number20325051
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Record identifierae13f895-7e56-4b56-8491-c767dfa5d003
Record created2012-07-18
Record modified2022-11-07
Date modified: