[Tagging] Some confusion in tagging

John F. Eldredge john at jfeldredge.com
Mon Aug 12 14:18:29 UTC 2013

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 <dieterdreist at gmail.com> wrote:
> 2013/8/7 amrit karmacharya <amrit.im at 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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John F. Eldredge -- john at jfeldredge.com
"Darkness cannot drive out darkness: 
only light can do that.  Hate cannot drive out hate: only love can do that."  -- Dr. Martin Luther King, Jr.
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