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The paint on a metal roof will last for about 10 years (the metal roof itself has a life span of 40 to 70 years). After a decade, the metal roof’s color may be more noticeably faded, and chips and cracks may start to form in the paint.

Salt is corrosive to metal, and when it’s mixed with air and water, that corrosion increases. While this compound can cause your car to rust, it takes years to cause damage. However, once you see rust, it’s probably well advanced. Winterize your car and avoid driving before or immediately after ice storms to reduce rock salt effects.

In the right conditions, a steel roof can easily last 50 years or more. However, your environment and maintenance play a large role in the lifespan of a steel roof. For example, if you live under a large tree that frequently drops limbs, your roof will last much less time. Metal roofs near the sea degrade faster as well due to salt in the air.

A 26-gauge metal roof panel can span between 4 and 8 feet, depending on a few factors. Local building codes dictate what’s appropriate for panel span, but these are normally based on expected snow loads. Additionally, the type of metal roof you choose will affect the maximum span, as corrugated metal is stronger than flat standing seam panels or a screw down roof and can often span greater distances.