Buddy of mine is starting a painting/powerwashing business. A customer wants him to powerwash his concrete driveway to wash of the green staining running off from a copper roof. Anyone know what will work? Thanks.
I have heard of using Sure Klean's ferrous stain remover product to get rid of copper on brick and concrete. I don't think you need to powerwash it, just scrub it with a brush I believe. They might even have a specific copper stain removing product now.
(Damn, I hope I am not violating any codes by saying "I have heard" or "I believe") lol
You're welcome Tom, I'm glad I could help. I didn't pay as much attention in chemistry class as I should have, and I have had to re-learn much of it on my own. I'm glad that I did, it has given me a big edge, and saved me much time and money.
For anyone who is interested in chemistry, this is the best site that I have ever seen: www.webelements.com
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