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Roofing Membrane Comparison

 Duro-LastManufacturer AManufacturer BManufacturer C
Membrane TypePVCTPOEPDMModified Bitumen
Custom Prefabricated Deck Sheets?YesNoNoNo
Sheet ConstructionFactory prefabricated into panels up to 2,500 sq. ftRoll goods only 500 sq. ft. coverage per typical rollRoll goods only 1,000 sq. ft. coverage per typical rollRoll goods only 100 sq. ft. coverage per typical roll
All Flashing Material ReinforcedYesNoNoNo
Flashing MethodAll heat-weldedGlue & heat-weldedGlueHot mopped
Curbs & Stacks Custom Prefabricated?YesNoNoNo
Scuppers and Parapets Custom Prefabricated?YesNoNoNo
Coverage For Ponding Water?YesNo: Typically voids warrantyNo: Typically voids warrantyNo: Typically voids warranty
Coverage for Consequential DamagesYesNoNoNo
Warranty CoverageRepair or replacementRepair onlyRepair onlyRepair only
Warranty Provided At No Extra CostYesNoNoNo