Understanding air barriers in mechanically attached low slope roofing assemblies for wind uplift

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ConferenceProceedings of the 3rd International Building Physics Conference: 27 August 2006, Concordia University, Montreal, QC.
Pages443450; # of pages: 8
SubjectAir and vapour barriers
AbstractWind flow over a mechanically attached roofing assembly (MAA) can lift the membrane and cause it to flutter or ?billow?. Air leakage into the assembly from building interior is a concern for wind uplift resistance of MAA. MAA is a growing segment of the low-slope roofing market however there is no widely accepted standard specification or test method to quantify air leakage through them. An experimental procedure has been under development for quantifying the air leakage rate of MAA. Assemblies with two barrier types, conventional polyethylene film and reinforced modified bituminous film, were evaluated. Data clearly indicates that MAA with barriers had lower air leakage rate than without. The air leakage impact on wind uplift resistance has also been evaluated under dynamic environment. Assemblies with barriers performed better than the assemblies without one.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedYes
NRC number48690
NPARC number20378362
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Record identifierb6d07dd5-96d0-4901-b70c-e4d2e31a6a84
Record created2012-07-24
Record modified2016-05-09
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