Products / Duro-Last Stack Flashings

Duro-Last Stack Flashings are prefabricated flashings made from reinforced Duro-Last PVC roofing membrane for round roof penetrations, supplied open or closed and heat-welded to the field membrane, then sealed with Duro-Caulk Plus and a stainless steel band. The data sheet lists white, tan, gray and dark gray, and Designer Series bases, in diameters of 1 and 1.5 inches, 1-inch steps from 2 to 15 inches, and 2-inch steps from 16 inches, oversized to fit schedule 40 pipe. It states that field fabrication of flashings for round penetrations is not allowed in the Duro-Last system.