A roof leak can be a serious problem, particularly if they go undetected for a long period of time. Not only can roof leaks lead to costly water damage, but they can also create an ideal environment for mold and mildew growth. As a result, it is important to repair roof leaks as soon as they are discovered. The most common cause of roof leaks is faulty flashing, which is the material that is used to seal the joints between roofing panels. However, roof leaks can also be caused by damaged shingles or by ice dams during the winter. Whatever the cause, it is important to have roof leaks repaired by a professional roofing contractor as soon as possible.