A: Rust stains on concrete seem to respond best to acids of various types. The classic treatment is oxalic acid, which is sold at some paint stores for use as a wood bleach. It is often sold in small bags. To use oxalic acid, mix one-half cup of the powder in a gallon of warm water and mop it on the stain.
Aug 7, 2011
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Apr 15, 2023 ˇ The crystals can give the concrete a brighter, more uniform appearance, but they can also create a slightly roughened texture on the surface of ...
Jan 26, 2003 ˇ I have heard that Oxalic Acid can remove rust stains from Concrete and work as a brightener too. I tried it, and had no luck.
Oxalic Acid may be used to remove rust and other difficult stains from areas such as buildings, boats, swimming pools, concrete driveways, sidewalks, iron ...
Jul 15, 2011 ˇ Mix about 2 to 3 pounds per 5 gallons and spray it on the concrete. Make sure you hit all concrete because it does brighten it, and you will see where you ...
Aug 12, 2017 ˇ You can stretch F9 1:1 and tackle most rust with it. Fill a Zep spray bottle and you'll use 10 squirts on most little rust stains a house has.
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Aug 22, 2003 ˇ I wouldn't use oxalic for brightening concrete. Put down a nice house wash mix and it will brighten it as good as anything.
Jun 16, 2023 ˇ Oxalic is an acid, SH a strong alkaline. It's mainly used to neutralize the SH on limestone or wood.
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Sep 27, 2023 ˇ Cleaning and Brightening Concrete: Oxalic acid can be used to clean concrete surfaces, particularly those affected by calcium deposits or rust ...
Sep 12, 2013 ˇ In this video, you'll watch how to rust remove with using the Oxalic Acid. Watch Oxalic Acid ...
Duration: 4:08
Posted: Sep 12, 2013
Duration: 4:08
Posted: Sep 12, 2013
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