Note that a copper roof goes from brown to black, and then from black to green.
Since a copper roof will last for decades, green is the color most often seen.
It is one of the most durable roofing materials, but is expensive.
Martin Koppenhoefer wrote:
> 2013/8/7 amrit karmacharya
>
> > In
2013/8/7 amrit karmacharya
> In roof material,
> should Galvanized zinc roof be tagged as eternit or metal or there is a
> special tag(like CGI)
>
>
Looks like there is some confusion. "Eternit" is a registered trademark for
a kind of fibre cement, and has nothing to do with zinc or metal. Usual