Good Galvanized Color Roof
Such a roof can be reasonably expected to be some 50 to 60 degrees cooler than a dark color asphalt shingles roof.
Good galvanized color roof. Extravagant roof colors in eccentric shades of blue green or yellow may be a fashion trend for a certain period of time and without any doubt will attract the eyes of the passers by. Metal roofing colors in a neutral monochrome color like brown cream black gray and terracotta never go out of fashion. White beige bronze sand light blue etc reflect the sun s rays a lot better than darker ones thus keeping your home cooler in the summer. But galvanized metal which exhibits a shiny adherent but rust colored stain is not truly rusting.
Compared to asphalt a white metal roof can be as much as 50 60 degrees cooler in the summer. In most cases the main focus should be on striking the right contrast between the house and the roof so if the too dark is not a concern for a rancher if having a darker color of the roof will help achieving the contrast between the cream color of the house with dark brown shutters and the roof. Rather this is just a phenomenon that often occurs in galvanized materials due to intermetallic alloying of iron and zinc i understand and is not indicative of the end of the useful life of the galvanizing. Metal roof colors influence the energy of a building so careful selection can ultimately save money on energy bills.
It is best to choose a light color metal such as white light bronze beige peach light green or blue if you live in a region that has a lot of sun and a hotter climate.