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Old 08-30-2010, 01:41 AM
snowman682 snowman682 is offline
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Join Date: Aug 2009
Location: N. MI
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Rust in concrete

I have a concrete side walk I am doing. It has rust on it, not hard water, not metal in the concrete, but rust/metal from years of snow removal. It is pretty bad in spots. Just tried a mix of 24oz of oxiolic acid to 2 gallons of water and it didnt touch it. Any suggestions?
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Old 08-30-2010, 10:23 PM
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Certified MD Roof Cleaner Certified MD Roof Cleaner is offline
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I'd try mixing a lil stronger. Try another 8-12oz per gallon. If that doesnt work u can try Super Iron Out or RustAid. I usually have to mix my oxalic really strong to get it to remove rust. Spray it on, let dwell, re apply, let dwell. Its a hurry up and wait process.
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Old 08-31-2010, 12:09 AM
snowman682 snowman682 is offline
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this is what i have. it is shiney cuz it is wet. going to try muriatic acid next
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Old 08-31-2010, 12:11 AM
snowman682 snowman682 is offline
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it is metal that rubbed off of cutting edges for snow removal for years. having my doubts on getting it off with chems. might be taking grinder with me next time. i know that will work!!!!
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