Temperature of bituminous roofing membrane and its relation to ambient conditions

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Author	Search for: Laaly, H. O.
Format	Text, Article
Conference	Symposium on Roofing Technology, September 1977
Subject	Roofs; Snow and ice loads; roofing; bituminous roofings; snow cover; freeze thaw cycles; temperature; roofs; mechanical properties; bitumen; membrane; strength
Abstract	Temperature 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	1977
In	NRCA/NBS Proceedings of the Symposium on Roofing Technology (1977): 187–192.
Language	English
Peer reviewed	No
Identifier	DBR-P-758
NRC number	NRCC 16523 NRC-IRC-3475
NPARC number	20375558
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Record identifier	4cd326bd-5519-44d8-b195-c69b0b15967a
Record created	2012-07-23
Record modified	2024-03-14