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The Duro-Last PVC roof membrane is a proprietary thermoplastic formulation that provides a highly reflective, durable, superior quality product. An 18 x 14 weft-inserted anti-wicking knit scrim that is laminated between two layers of PVC film gives the membrane its strength and durability. This EPD applies to the Duro-Last single-ply membrane in white, gray, charcoal, and tan in 40-mil, 50-mil, and 60-mil nominal thicknesses. The Duro-Last membrane can be prefabricated into deck sheets up to 2,500 square feet in size, then mechanically attached to the roof substrate or purchased as a rolled good and installed fully adhered or mechanically attached. Nearly all Duro-Last membrane installations are inspected by Duro-Last’s certified Quality Assurance Technical Representatives.