If you want a gorgeous look with maximum durability for your roof like on this home in Northampton, PA, metal slate is a great option. Comparing the metal to the asphalt, you can see a lot more definition in the metal. Because of it's durability, that definition will stay that stunning much longer than asphalt shingles. The typical lifespan of a metal roof is around 75 years but can easily surpass that. For the most energy efficient, durable, and gorgeous roof, metal slate is the best choice.