Performance issues with muntin bars in sealed insulating glass units

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TypeIssue
Series titleConstruction Technology Update; no. 28
ISSN1206-1220
Physical description4 p.
SubjectMoisture performance
AbstractMuntin 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
PublisherInstitute for Research in Construction. National Research Council Canada
LanguageEnglish
AffiliationNRC Institute for Research in Construction; National Research Council Canada
NoteAussi disponible en français : Influence des croisillons sur la performance des vitrages isolants
Peer reviewedNo
NRC number9867
NPARC number20325051
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Record identifierae13f895-7e56-4b56-8491-c767dfa5d003
Record created2012-07-18
Record modified2016-05-09
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