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Field performance of single ply, chlorinated polyethylene (CPE) roof membranes

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Abstract
This paper will present the results of a field study of 29 different recover roofing systems installed on a variety of buildings. All of the buildings were located in southeast Texas and were exposed to a variety of conditions related to use, coastal environment and drainage characteristics. Installation methods included mechanically fastened and fully adhered (fleece backed) membranes. Substrates included a number of different deck types and original membrrane types, as well as various recover insulatoin materials, including glass fiber, perlite, wood fiber and expanded polystyrene (EPS). a number of these roofs exhibited areas of chronic and long term ponded water. An intensive visual study was made regarding the effect of ponding on the CPE roof systems and the deterioration occurring in those locations. Laboratory testing on a number of the roofs re ealed aging effects on some membrane physical properties. A number of other perfroance characteristics are assessed and general observations presented, including detailing practices and conformance with industry standards.
Date
0/1999
Author(s)
Warren French
Page(s)
43-59
Keyword(s)
chlorinated polyethylene; CPE; single ply; weathering; pin holing; ponding; puncture resistance


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