Polyvinyl chloride (PVC) single-ply roofing systems have been installed at three U.S. military facilities for a ten year evaluation. This paper reports preliminary results through the first six years of testing. The test is part of long-term research by the U.S. Army Construction Engineering Research Laboratory (USA CERL) to identify alternatives to conventional built-up roofing for military construction and reroofing.
Membrane samples were taken periodically based on a schedule of every six months for the first two years and annually during the next four years. Laboratory testing was performed by the U. S. Bureau of Reclamation using American Society for Testing and Materials (ASTM) methods in most cases. A total of ten tests measuring mechanical and physical properties of the membranes and the seams were performed on each set of samples. Four other tests were done on a limited basis.
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