The answer to 'what causes metal roof' is that metal roofs can be damaged by a variety of factors, including weather, age, and improper installation. Metal roofs are susceptible to corrosion, dents, and leaks over time, especially if they are not properly maintained or if they were not installed correctly.
One of the most common causes of metal roof damage is exposure to the elements. Heavy rain, hail, snow, and high winds can all take a toll on a metal roof, causing dents, cracks, and leaks. Additionally, extreme temperatures can cause the metal to expand and contract, leading to structural issues over time.