Roof damage with missing shingles after a severe storm, highlighting common causes of roof leaks. It usually starts with a quiet drip or a faint wat er stain on the ceiling, the first sign of a leaking roof. Before you know it, that small leak can spread, damage insulation, or even cause mold. Studies from the National Roofing Contractors Association show that many major roof repairs begin as minor leaks that were ignored too long. And with New Jersey’s mix of heavy rain, sn