If not repaired quickly, leaking roofs can lead to significant problems for homeowners. Roof Leak Repair: What to Do and When to Call an Expert, Water stains on the ceiling, structural damage, and mold can all result from a leak – even a small one. It is important to understand the need to repair a leaking roof and when to reach out to a reputable roofing contractor, in order to protect your home from long-term financial costs. Common causes of leaking roofs include damaged shingles, cracked flashing, clogged gutters, broken roof vents, aging roofs, and extreme weather events such as heavy rain; hail; and high winds. Frequently, a homeowner will not notice a leaking roof until there is already some level of damage, since most leaks develop over time. Dripping water, damp walls, peeling paint, mold, musty smells, and visible disrepair are all common warning signs that there is a problem.