Dirty Penny™
PREWEATHERED PATINA ON COPPER
Dirty Penny’s enigmatic colors provide a stunning copper surface unlike any other. It is available as a flat sheet good or for specification within a Zahner project.
Laguna Beach, California
Dirty Penny features a rich array of colors, from reddish-brown to orange and yellow shades — even deep hues of purple. These tones intermingle and create an intriguing mottled effect, initially exhibiting a slight iridescence.
Dirty Penny can maintain its iridescent luster if properly sealed and maintained; the finish can last indefinitely as an interior surface. Conversely, when exposed to the elements, the copper transforms into a captivating blend of deep reddish hues.
While all patinated copper holds up better outside, Dirty Penny does so incredibly well.
The protective patina impedes the copper ions’ tendency to combine with oxygen. Corrosion will occur very slowly because the longer the exposure time to the atmosphere, the greater the bonds between the base metal and the oxide.
Dirty Penny is an excellent choice for interior surfaces such as ceilings and wall panels.
Additionally, due to copper’s malleability, it can be easily perforated, bumped, and embossed.
Dirty Penny Gallery
See Dirty Penny in application through a selection of Zahner projects.
Dirty Penny 3D Visualization
Use the visualizer to explore Dirty Penny in 3D environments.
Switch between Exterior & Interior views to see how the sun’s movement will play across a facade or how the Surface will appear from vantage points with a fixed light source.
Exterior
InteriorProduct Information
| Recommended Application | Exterior and Interior |
| Base Metal (alloy) | copper |
| Standard Thicknesses | 20 oz 24 oz 32 oz 48 oz |
| Approx. Decimal (mm) | .0270” (.686) .0323” (.820) .0431” (1.09) .0646” (1.64) |
| Approx. Weight (lbs/ft2) | 1.25 1.50 2.00 3.00 |
| COTE (in/in/°F) | 9.8 x 10-6 |
| Standard Sizes | 3′ x 8′ 3’ x 10′ |
- Recommended Application: Exterior and Interior
- Base Metal (alloy): weathering steel (A606)
- Standard Thicknesses: 14 ga, 12 ga, 11 ga
- Approx. Decimal (mm): .0747” (1.90), .1046” (2.66), .1196” (3.04)
- Approx. Weight (lbs/ft2): 3.13, 4.38, 5.00
- COTE (in/in/°F): 7.0 x 10-6
- Standard Sizes: 4′ x 8’, 4’ x 10’, 4’ x 12’, 5′ x 8’, 5’ x 10’, 5’ x 12’
Learn More About Dirty Penny and How it Compares to Other Copper Surfaces
Read our educational series on the history, manufacturing, and application of copper and Zahner Dirty Penny:
Part 1
Copper: The Dawn of a New Age and Modern Metal Marvels
Following a rich history, copper and its alloys continue to influence our contemporary world.
Part 2
The Finishes, Patinas, and Textures of Copper and Copper Alloys
Discover how the varied surfacing of copper becomes an expressive art form in itself.
Part 3
Dirty Penny™: Zahner’s Copper Patina Surface With Iridescent Appeal
An exploration of the creation and application of this preweathered copper patina.
Details
- Recommended Application: Exterior and Interior
- Base Metal (alloy): copper
- Standard Thicknesses: 20 oz, 24 oz, 32 oz, 48 oz
- Approx. Decimal (mm): .0270” (.686), .0323” (.820), .0431” (1.09), .0646” (1.64)
- Approx. Weight (lbs/ft2): 1.25, 1.50, 2.00, 3.00
- COTE (in/in/°F): 9.8 x 10-6
- Standard Sizes: 3′ x 8′, 3’ x 10′
Articles
Learn More About Dirty Penny and How it Compares to Other Copper Surfaces
Read our educational series on the history, manufacturing, and application of copper and Zahner Dirty Penny:
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