Updated: Oct 5, 2018
As the copper experts, we get a lot of questions at Hammermarc about what is considered normal when it comes to your copper products wear. People often do not know what to do when it comes to getting rid of light or dark spots that happen naturally when you use your copper sink. Our answer? The finish will solve this issue for you with time.
Every copper sink has what is known as a “living finish”. This means it can protect itself naturally from the environment and general wear and tear. This is due to a finish that copper produces all on its own, called patina. In its stages patina changes color: First it turns brown, then black and then green. This is why the Statue of Liberty is that familiar green color. Believe it or not, when Lady Liberty was first brought to the United States, it was as shiny as a new penny. However, you do not have to worry about your new copper sink turning green as this process takes over a decade to occur and also is dependent on the copper being exposed to an outdoor environment.
Your copper sink will continue to shift colors over the years, gaining richness and a myriad of shades. It is important that you avoid letting acidic foods like tomato sauce or ketchup from sitting in your sink for much time at all. The acid in the foods does have the ability to distort the color of your sink. If you discover that your sink has been scratched or has a light spot that is standing out, simple wash the sink with soap and water and continue to use the sink as often as you need. Your problem area will eventually disappear.