Re-Cover Don't Reroof! Whether your roof is large or small, Gaco Flex Silicone Roofing Systems provide a proven, guaranteed solution for renewing your weathered roof. They can be applied to virtually any existing roofing surface to create a membrane that protects againsy permanent ponding water, ultraviolet light and severe weather. We service Ulster, Dutchess, Orange, Putnam, Westchester and Rockland Counties.