[bizaro86]

Originally Posted by Ducay

You don't honestly think the designers and city approved every West station being copper clad without knowing full well what copper looks like in Calgary? I believe you can chemically treat copper to speed up the oxidization, but without any moist air, its likely going to be deep brown for a while. Enjoy the shiny while it lasts.

Could we do this?

The copper roofs on Parliament are green. Everyone can see that. But Nixon says the green did not come naturally. In his book, he quotes Doug Pickard, the foreman of a roofing contractor: “Roofers used to mop horse urine on the new copper to make it go green faster.”

http://www.centretownnews.ca/index.p...3086&Itemid=94