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Ultimately, there’s little change in its color.Īnother neat thing about working with metal is that you can age metal intentionally, so the design has a “classic” look with no waiting required. Some builders call this “white rust.” Meanwhile, when aluminum encounters the air, it forms a protective layer through a process known as anodization. The high zinc content in galvanized steel will cause it to take on a white-like color. Galvanized steel and aluminum also change when oxidized, just not in the same way as copper and brass. Brass’s patina effect is a little more green copper’s color is closer to blue. Because brass is two-thirds copper - so it behaves similarly over time.
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To learn more about decorative metal, check out the free download below:īrass architecture, however, behaves similarly to copper when exposed to air and water - it'll take on a blue-green color. Of course, copper is just one metal that turns green.Īge may be more than a number when it comes to metals, but it’s still just one of many factors that should go into your material choices. Walking down any street in America with historic old buildings, you'll often see a lot of blue-green on the exterior facade. In a sense, when it oxidizes, it becomes strengthened and more durable.Īside from the Statue of Liberty, you'll commonly see roofs, outdoor sculptures, and even gutters made of copper due in part to the trademark blue-green color it eventually takes on. Yet, instead of rusting, it morphs into a beautiful blue-green color.Īnd what's interesting about the blue-green color is that it makes the metal more resistant to further corrosion. The Statue of Liberty is green thanks to the copper patina effect.Įssentially, the green color results from the copper coming into contact with water, oxygen, and carbon dioxide over time, causing a coating to build on the surface. The Statue of Liberty isn't made out of a green metal its surface is mostly copper - and copper doesn't come out of the mill looking green. So, what is it called when metal changes color? The patina effect - a color change in red metals caused by oxidation. What color is it? If you answered "green, with maybe a little blue," you're correct … but you wouldn’t have been 140 years ago.Ĭopper, bronze, brass, and other metal used in interior design and architecture may not look the same color 5, 10, 20, or even 50 years from now as they do today. Think of the Statue of Liberty for a moment. How The Patina Effect Creates Green Metal What causes green metal? It all begins with a slow-moving special effect. This transformation should be part of your decision marking process when choosing metal mouldings for your next architectural project. Some metals rust while others slowly turn green. Don't be concerned this is normal - and maybe even good! Regardless of whether you prefer shiny or tarnished looks, you need to be aware of the difference between brand-new architectural metal now and one affected by corrosion and oxidation. Is youthful glow better, or is the weather look of experience more desirable?Įach architectural metal has a different response to aging. There is a Royal Stencil pattern available for every decorating style! We are continuously updating our stencil collections to offer you everything from timeless patterns to the latest design trends.Like with many other things in life, age is a big talking point in decorative metals. Simply choose the best stencil paint color to match your decor to create a coordinated look. Stencils give you endless custom color options. Use them to stencil patterns on walls, wood, concrete, furniture, tile, fabric paper, cork, canvas, and more.ĭecorating with stencils is economical! All you need are some basic Stencil supplies and paint to create a patterned wall or surface at a fraction of the cost of wallpaper. With minimal care, stencils can be used repeatedly for many different projects and on multiple surfaces. Our stencils are laser cut in our San Diego, California, USA studio from durable 10mil Mylar plastic sheets.