Although it's commonly known as a dark gray rock ... already one of the most expensive roofing options at about $9 to $25 per ...

Image: Roof Tile Technology Ltd. The flat, dark grey, BiSolar tile has a power output of 18 W and efficiency of 17.5%, according to the manufacturer. “For each square meter, 9.7 tiles are needed ...

The roof is the crown of a home ... maroon, brick red, and dark green. The tiles come either in gloss or textured finish, therefore, radiating elegance. Produced by Mabati Rolling Mills, the ...