New ASTM Stanards for TPO

Currently, there are at least six manufacturers of TPO roofing membrane in the United States as well as several marketers. Until recently, there has been no ASTM standard established for TPO reinforced roofing membrane. The approval and release of an ASTM TPO standard has defined minimum physical properties of the membrane, providing needed standardization to the industry.


TPO is one of the latest single ply, flat roofing materials on the market. TPO is the fastest-growing segment of the commercial roofing industry. Architects and owners alike have learned of TPO's superior weathering ability and exceptionally reliable heat welded seams.

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