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How to do verdigris finish on copper


Q. I am a visual artist, and wish to speed the verdigris process on my work in copper. Someone suggested urine. Please have an alternative!

Ellen Peterson
- Winnipeg, Manitoba, Canada


A. Dear Ellen,

Maybe the application of a urine patina might work as some kind of visual artistry. Try the literature section, there are some good books on the subject. Believe it or not, but the acids in your urine will color copper! It seems like the more green-friendly, all natural way to go, don't you think?

Jake Koch
G. J. Nikolas &Co.,Inc.
supporting advertiser
Bellwood, Illinois
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A. Ellen--

Ammonia works, too. You'll end up with a bright blue rather than turquoise or green, if that's what you're looking for.

Martin Jacobson
- Atlanta, Georgia, USA

"The Colouring, Bronzing and Patination of Metals"
by Hughes & Rowe
from Abe Books

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A. copper nitrate [affil link] combined with salt sprayed on copper will give you a verdigris patina. You must leave it undisturbed after several applications. It is delicate but the longer you wait the tougher it will get. A couple of weeks should give you something you can handle. You have to get the nitrate from a chemical supply Co.

Harley Roden
- Downers Grove, Illinois, USA


A. 250 gm ammonium carbonate + 250 gm ammonium chloride/1 lit water!

Goran Budija
- Cerovski vrh Croatia


Q. I want to treat the copper gutters and trim on our new home with something that turns it a verdigris immediately. What commercial product is there to do this?

Barry Stirdivant
- Grand Haven, Michigan, USA


Q. I have the same question: How to turn copper immediately to the verdigris patina

rosie koverman
- gilbert,South Carolina usa

Sophisticated Finishes Patina

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A. Hello Barry, Rosie. We appended your question to one of several threads on this general topic, If you don't see enough info here, search the site for green patina and you will see many suggestions, formulas, and comments.

Too answer the need for "instant" patina, a commercial product for that purpose is .

Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey


Dear Sir, I am looking for verdigris paint to applied on garden furnitures . Please let me know. Thank you Alain

Virlouvet [last name deleted for privacy by Editor]
custom furniture designer - La Porte, Texas, USA

Metallic Surfacer: Copper

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February 23, 2013

Hi Virlouvet. If you really just want paint, I'm confident that Rustoleum and Krylon and the other companies who offer paint for outdoor metal will have a color faitly close to verdigris.

But another approach is to "paint" on some copper metal surfacer, which will leave the surface full of tiny grains of copper.
and then apply the instant patina discussed immediately above to turn the copper to verdigris. Good luck.


Ted Mooney, finishing.com
Ted Mooney, P.E.
Striving to live Aloha
finishing.com - Pine Beach, New Jersey

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