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Traditional Patinas
Traditional patinas are mixtures of chemicals that react with the surface of metal to create different colors. We offer the following pre-mixed patina formulas for your convenience. Many additional formulas are available in our books and videos.
General Tips: One gallon of traditional patina will cover approximately 200 square feet. When working with iron or steel, we recommend not rinsing the patina with water after the patina has developed. Always apply a good metal sealer, such as Permalac, as soon as the patina has dried (except Japanese Brown: apply the sealer after 12 hours).
Quick recommendations for
iron & steel:
Browns/Blacks - Japanese Brown
patina, Darkening patina, PC-9 by Birchwood Casey.
Greens -
the only 'acid' patina in a green shade would be Vista Green (see
Vista
Patinas).
Download the Traditional patina color chart here (requires Adobe Acrobat Reader).
Birchwood Casey Patinas
General Instructions: Birchwood Casey patinas are sold concentrated. Please dilute with up to 50% with distilled water before use. All of these patinas are considered traditional patinas that will age or darken the metal. Apply a clear sealer when finished. Do not wait long to apply the sealer when working with iron, steel, or aluminum. The Birchwood Casey Gels make it easier to achieve an even patina and work well on vertical surfaces.
Solutions for Bronze, Brass, and Copper:
M-38 is a spray, brush or emersion Brown Antiquing Solution.
M-24 is a spray or brush Black Antiquing Solution.
M-20 is the same Black Antiquing Solution, but is made for an emersion
(dipping) process.
Solution for Iron & Steel:
PC-9 Presto Black (Gun Bluing) spray, brush, or emersion.
Solutions for Aluminum:
A-14 spray or brush Black Antiquing Solution for Aluminum.
A-15 is the same Black Antiquing Solution, but is made for an emersion process.
Soultion for Pewter:
PB-1 Black Antiquing Solution for Pewter.
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Birchwood Casey (8oz & 32oz) |
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Birchwood Casey (1 Gallon) |
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Birchwood Casey (5 Gallons) |
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Birchwood Casey Gels |
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Traditional Brown
Patinas
Ferric Nitrate is a hot patina for bronze, brass, and copper.
In addition, it is often used to rust iron and steel.
Ferric Nitrate/Ferric Chloride is a hot patina for bronze, brass, and
copper.
Japanese Brown is a patina for iron and steel, which
may be applied hot or cold. This patina will create a golden color
on
bronze, brass, and copper.
Tan
is patina for all metals and may be applied hot or cold.
Potassium Dichromate is an interesting orange patina for bronze, brass,
and copper. Also, when diluted, Potassium Dichromate may be used as a stop out for rust on iron
and steel.
Deep Brown is a beautiful mahogany/brown patina for Bronze, Brass, and
Copper.
Please click here
for application instructions and color samples for these patinas.
Mahogany
is a patina best used on
copper. When used on a polished surface a beautiful
transparent brown patina will form with swirls of color. On a non-polished
surface a nice brown will appear. On bronze or brass, this patina
turns a nice brown. Mahogany works well as a base patina under traditional greens or blues
as it will make these colors more vibrant.
In addition, Mahogany is one
of the few patinas that will react with stainless steel, resulting in a gray color.
Click here
for a sample of Mahogany patina on copper.
Antiquing patina beautifully and easily ages
bronze, brass, copper, iron, and steel.
Darkening patina is
great for aging or darkening the Metal Coatings or cold cast/resin materials, yet
it will darken all other metals as well. This patina will create a
beautiful transparent brown on iron and steel.
The following pictures display Antiquing and Darkening Patinas on copper
and steel:
on
Copper
on Steel
| Traditional Brown Patinas |
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Below: The entire structure of the Guggenheim Museum in Las Vegas was built of steel plates.span> First, the Japanese Brown Patina was used on the steel. Next, Water Base Dye Oxide Patinas were applied to create the color patterns.
Traditional Blue Patinas
Cupric Nitrate is a hot patina for bronze, brass, and copper, which creates a
blue/green beautiful finish.
Powder Blue is a cold patina for
bronze, brass, and copper. This patina is a stable
blue and a good choice for outdoor work.
Indoor Blue
Please click here for further instructions and color samples.
Traditional Blue Patinas
Traditional Green Patinas
Light Green Patina is only for use on bronze, brass, and copper. Apply to a clean, cold (65°-70°F) metal. It will take 2-12 hours to completely react with the metal.
Mint Green is a patina for bronze, brass, and copper that may be applied
hot or cold.
Sometimes called sulfurated potash, Liver of Sulfur is a very old base patina. It
works well on large outside bronzes because it is relatively easy to
apply and provides an attractive, warm brown. You must mix this solution
fresh each time you patina since it will keep only one or two days
once mixed in water. Any surface with Liver of Sulfur patina
must be washed thoroughly before any other patinas are applied. Store in a cool dry area.
Are you confused by the patina process or having difficulty with your metal? Try our new Patina Stain. The Patina Stains are blended to match chemical or
traditional patinas without the fuss.
Because the
Tiffany Green is a cold patina for bronze, brass, and copper.
These two patinas are for
both indoor and outdoor work. Specifically, Mint Green patina will
create a beautiful green while in the full sun and is recommended when
working outdoors on copper roofs and gutters. An alternative green
when working outdoors in the sun is our
Vista Green Patina.
Tiffany patina should be applied in the shade, but once the patina has
developed it may be placed in full sun. Both of these patinas will
cause rust on iron and steel (Tiffany Green makes the most beautiful,
orange rust).
Traditional Green Patinas
Liver of Sulfur
To make this patina: mix 1 teaspoon of Liver of Sulfur with 1 pint
of warm water.
Liver of Sulfur Patina
Patina Stain
The patina stains are available in normal and
environmentally friendly formulas. The environmentally friendly
formula has lower VOC, no solvent odor, and may be thinned with Permalac
EF or acetone.
Patina Stain
Patina Stain Environmentally Friendly