The biggest benefits of metal roofs are that they are extremely durable, incredibly strong and weather resistant which is important for many parts of the country where the climate can change rapidly from hot and damp to cold and dry. They also have a very long lifespan, which is especially beneficial in places where there are periods of heavy rainfall or snowfall. It can be virtually impossible for asphalt shingles to stand up to these conditions.
Metal roofing can be made to last for decades if it is properly designed and installed properly, but there are a few tips to help with longevity even when the roof has already been built. Metal roofs should be kept relatively clean, and if there is any junk on the roof it should be disposed of immediately. Metal is an extremely corrosive material, so it is important to avoid using abrasive cleaners or harsh detergents on the material. It can also easily be etched by high temperature salts, so maintenance workers should ensure that the roof is washed down frequently. If there is a problem with any part of the roof, such as a missing ridge cap, this should be inspected and replaced as soon as possible.