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Effects of thermal shrinkage on built up roofing

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Abstract
The effects of thermal movement of bituminous built up roof membranes are related to some commone failures of built up roofing observed in field exposures. A procedure for determining the amount of thermal movement of built up membranes is described. Data are given for the thermal movement of various bitumemns and reinforceing felts used in the consturction of built up roofs and for the composite membranes over a temperature range of +30 to -30F. The data obtained are related to field experience and suggestions are presented which will provide beneficial in reducing the incidence of built up failure due to thermal movement.
Date
3/1965
Author(s)
Cullen, Bill
Page(s)
6
Keyword(s)
thermal shrinkage; BUR; failure;


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