I have a house and roof cleaning to do next week. The house has a couple of bay windows with copper tops. These are very dark. Homeowner said they like the color and don't want the color to change. I have not had an experience with copper. Is my softwash solution going to change the color and if so how can I prevent this?
Constant rinsing with water while cleaning and it should be fine. And then use bleach wash. Just advise homeowner that if any color change in an area, that it will change back after it weathers.
If you use the search option in the blue bar above you can search this topic. I typed in COPPER and found 9 other threads on this and alike questions. Hope this was helpful.