You should go with a lighter color metal roof such as lighter shades of green silver or off white if you want to attain maximum energy efficiency and keep your home as cool as possible during summer.
Best metal roof color for energy efficiency.
Other factors such as roofing material insulation and the integrity and age of the roof all come into play.
Modern energy efficient metal roofing acts as a giant mirror of sorts by reflecting the heat and energy up into the air.
This highly reflective coating uses cool pigments in the paint to increase solar reflectance and lower the surface temperature of the roof.
Since more heat is reflected energy bills are lowered.
Clay and slate tiles.
In this type your roof will be covered by greenery.
Metal gives the impression of a hot environment.
Green roofs popularly known as the living roofs can make your roof cool.
A white or light colored metal surface reflects best under testing at about 67 percent reflectivity and even some newly developed cool colors send the rays away source.
However the metal can make your roof cool.
Florida solar energy center.
Metal roofing utilizing cool colors are known to have energy savings ranging from 7 15 of overall cooling costs.