- Author
-
Cullen, W. C.
- Title
- Effects of Thermal Shrinkage on Built-Up Roofing.
- Coporate
- National Bureau of Standards, Washington, DC
- Report
-
NBS Monograph 089
March 4, 1965
- Distribution
- Available from National Technical Information Service
- Keywords
-
roofs
|
construction materials
- Identifiers
- roofing
- Abstract
- The effects of thermal movement of bituminous built-up roof membranes are related to some common 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 bitumens and reinforcing felts used in the construction of built-up roofs and for the composite membranes over a temperature range construction 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 prove beneficial in reducing the incidence of built-up failure due to thermal movement. (Author)