Even on newer, good condition roofs like the one pictured, a basic maintenance routine is still necessary. You want to keep it not only looking good, but to keep everything beneath it dry. The fasteners that hold on the roofing product need particular attention. If they become exposed, as seen in the picture, they can serve as a welcoming entry point for water. And wherever water can get in, it will! Proper sealing of any exposed fasteners with tar is an essential part of any roof maintenance schedule.