DURADEK Waterproof Vinyl Roof & Walking Deck Membrane Since 1974, over 125 million sq. ft. of Duradek vinyl membranes have been installed by trained, professional applicators on roof decks, sundecks, balconies, patios and verandas in all North American climates. With an industry leading 10year warranty, Duradeks proven system, unique installation techniques and decades of experience provide waterproofing you can trust. Discover the Duradek difference and find out why after 40 years Duradek is still your best choice for low maintenance outdoor living space. more... See more text