Metal Advantages
Metal roofs can last 50-70 years, depending on the material.
When installed correctly, some metal roofs can sustain wind gusts up to 140 miles per hour.
Metal roofs will not spark and ignite into flames during a wildfire or lightning strike.
Metal roofs reflect the suns UV and infrared light rays that contribute to roof surface radiant heat, which can result in a 10-25% reduction in cooling costs.
Metal roofs not only have 25-95% recycled content, depending on the material used, but are also 100% recyclable at the end of their life as a roof.
Metal Disadvantages
During a heavy rainstorm or hailstorm metal roof may be more noisy due to the echo hitting your metal roof. There are installation techniques that can reduce but not eliminate the noise.
Though some manufacturers offer dozens of colors, the options are still more limited than shingles. Also, If a repair is required or a home extension is added years later, it may be difficult to find an exact match to the existing metal.
Metal roofs can be as much as two or three times more expensive than other roofing materials. If you plan to stay in your home long enough it can be a better return on your investment.