Metal finishing Q&As since 1989
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Is Green patina finish on copper gutters possible in dry climate?
I have a request from a client to put a "green" patina on some copper gutters. Here in Northern Nevada we have very low humidity. Copper turns black. Is there a way to put a "green" patina on copper in our climate that will stay that way or will it eventually turn black again?
Craig Willcutcontractor - Reno, Nevada, USA
2003
Incralac
(brass lacquer with benzotriazole)
on
eBay
or
Amazon
(affil links)
Green patina for copper and copper alloys:
250 gm ammonium carbonate
250 gm ammonium chloride
1 lit water
You can brush it very thinly, on grease and oxide free object. And you must lacquer or wax it (use Incralac
[on
eBay or
Amazon]
or wax
[affil links] )!
- Cerovski vrh Croatia
2003
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