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White polyethylene geomembrane: Forensic and laboratory evidence for superior durability
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White Polyethylene Geomembranes have been available in the market for over two decades and have been used broadly, often exposed (uncovered) in demanding and sensitive applications. The performance of these materials has far exceeded the initial (circa 1990’s) exceptions. There is increasing evidence that the durability and lifespan of a white geomembrane in an exposed application is longer, not only than projections, but perhaps longer than that of traditional black colored geomembranes of comparable composition. This paper presents data in support of that hypothesis and reaches the conclusion that in exposed applications, white surfaced geomembrane is the material of choice, based on durability as well as other pertinent considerations. Data and evidence from forensic evaluations as well as laboratory testing for durability is presented and new estimates on lifespan are presented.