Both metal and asphalt roofs are great options and often can be a decision that is determined by aesthetics. Although preference may vary, we can also consider some additional factors. The overall lifespan of a metal roof is approximately 50 years vs. an asphalt roof that has an overall lifespan of approximately 20-25 years. Maintenance and general weather conditions play a factor in both situations.  Additionally, both roof types should be inspected each year and repaired as needed to maximize total longevity.