Temperature of bituminous roofing membrane and its relation to ambient conditions

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Pages187192; # of pages: 6
SubjectRoofing; bituminous roofings; snow cover; freeze thaw cycles; temperature; roofs; mechanical properties; bitumen; roofing; membrane; snow; freeze-thaw; temperature; strength; Roofs; Snow and Ice loads; Couvertures; couverture bitumineuse; couche de neige; gel degel; temperature; toiture; propriete mecanique
AbstractTemperature measurements were made on a bituminous built-up roofing membrane on a building roof at Ottawa. Thermocouples were installed at the top and middle of the membrane and one inch (25.4 mm) below it. Temperatures were measured from the middle of winter to the middle of summer. Depth of snow cover was determined at intervals on the roof and daily on nearby ground. The results show that when snow cover is shallow and temperatures are low a roof membrane may undergo many freeze-thaw cycles each winter. Because of uneven snow distribution on a roof, different thermal regimes exist in the membrane resulting in non-uniform stresses.
Publication date
AffiliationNRC Institute for Research in Construction; National Research Council Canada
Peer reviewedNo
NRC number16523
NPARC number20375558
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Record identifier4cd326bd-5519-44d8-b195-c69b0b15967a
Record created2012-07-23
Record modified2016-05-09
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