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Ted Mooney, P.E. RET
The authoritative public forum
for Metal Finishing 1989-2025
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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
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
⇦ this on
eBay or
Amazon [affil links]
or Renaissance Wax
⇦ this on
eBay
or
Amazon [affil links]
)!
- Cerovski vrh Croatia
2003
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