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 <dieterdre...@gmail.com> wrote:
> 2013/8/7 amrit karmacharya <amrit...@gmail.com>
>
> > 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.
> Usually
> in the building industry the material I think you are referring to is
> called galvanized steel (where zinc is used in the galvanization
> process to
> cover the steel in order to make it less prone to rust). In the case
> of a
> roof of facade cladding I'd use "sheet metal" (usually galvanized
> steel o
> copper, the first being "silver" coloured, the latter black (after 1-2
> years)).
>
> cheers,
> Martin
>
>
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