How to clean copper residue stains from stucco?
by Eddie
How to clean copper residue stains from stucco? Tried pressure washer with very limited success. Tried trisodium phosphate with no success. Tried other exterior cleaning products with pressure washer with little success. The soaps did remove the mold/mildew but not the copper stain/residues on the stucco. Anyone have ideas of what else to try. I do not want to seal and paint the stucco.
Suggested Project Book
Hi Eddie,
Maybe seal the copper and re-paint after using stain cover paint (available from DIY's or eBay) etc.
Isn't stucco supposed to be sealed and painted? Only thing to do is to seal the copper and let the old stains fade away with age