Hi Everyone,
I am a window cleaner and came across this on a house we just did, the owner was hoping to find a way to remove it. Looks like the water has been running behind the build-outs causing this nasty looking stuff. I don`t have a pressure washer but was hoping to find a chemical I could spray on with a pump sprayer and then scrub and rinse. Any suggestions? Thanks
If it were my house i would have the builder look at and fix the underlying issue first and then clean it or repaint but for you it seems you need to test different chems starting with soap and water and move up vinegar, hard water spot remover… ect
