Digital Library / Manuals and Monographs / MNL18-EB / MNL10166M

Chapter 16-General Considerations for Roofs
Tobiasson, W
Research civil engineer, Cold Regions Research and Engineering Laboratory (CRREL), NH

Pages: 30    Published: Feb 1994

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Source: MNL18-EB

First Paragraph

THE EXTERIOR WAERPROOFING ELEMENT of a roof can be a water proof membrane or, if the roof has enough slope, a series of overlapping, water-shedding elements such as shingles or tiles. Since gaps exist between such overlapping elements, water must flow down them by gravity and sufficient headlap must exist to prevent water penetration by wind and rain forces, by air pressure, and by capillary suction [1].

Paper ID: MNL10166M
Committee/Subcommittee: C16.33
DOI: 10.1520/MNL10166M
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ISBN10: 0-8031-2051-6
ISBN13: 978-0-8031-2051-8