I am thinking of replacing my roof so I’m wondering about the benefits of a standing seam metal roof. I’m aware of its greater durability, but I’m wondering about the energy efficiency component. Does the energy benefit come mainly from choosing a light color? Do light colored asphalt shingles offer a comparable energy benefit?
It also seems to make a lot more sense to choose a metal roof if I decide to add solar pv at a later time. Why add solar panels with a 30 year lifespan to an asphalt roof with a 15 year life? That seems like a common practice but problematic down the road when the shingles need replacing.
I’ve searched around the internet and found a lot of the industry’s advertising, but I’m a bit skeptical, especially after reading what Mr Holladay says about the dubious claims made by manufacturers of bubble foils, radiant barriers, and open-cell spray foam (Musings of an Energy Nerd. 2-5-2010).