Copper Roof Turning Green

Over time copper will naturally change colors transforming from a shiny brown color to darker browns then blues and finally greens after a number of years.

Copper roof turning green. The patina is due to the process of oxidation and the sulfur particles in the atmosphere. James watts navarre florida. Copper roofing is bright pink to begin with and in time it can gain a brownish color and then a nice blue green patina. As the years pass and the roof ages the patina will thicken and change colors.

The exterior of the statue of liberty is made of copper about the thickness of two pennies. Unlike other destructive oxidation processes the patina acts as a protective layer and it does not cause any weakness in the metal. Its beautiful mature green patina gives the statue a graceful glow that seems to bring her to life as she stands over liberty island and the. This process will take several months or years depending on the atmospheric conditions in your area.

A word of caution. Use disposable equipment that you don t mind ruined. This layer known as a patina is incredibly thin. Check with the original metal mfg.

Eventually the roof will even out to a brilliant green. Colors often include shades of copper green dark brown and turquoise. Copper turns green because of chemical reactions with the elements. The copper metal reacts with oxygen resulting in the formation of an outer layer of copper oxide which appears green or bluish green in color.

3 tablespoons white vinegar 5 45 ml 1 teaspoon table salt 5 ml 2 stirred very well until the salt dissolved completely. Copper can also turn gray brown or blue in some circumstances. Copper normally changes in appearance from a shiny red metal to a dull green. Copper roofs naturally turn green from exposure to the elements.

In about one year the roof turned a nice chocolate brown color except for the areas where they soldered it and got excess flux on the roof. This change occurs as a result of a chemical reaction between the copper moisture and oxygen referred to as oxidation. Most of the roofs at uwf turned a green built about 1964. I think that it has more to do with the alloy of copper than anything else.

4 removed the copper and let it dry.