How To Do Just About Everything
By eHow Home & Garden Editor
Rate: (11 Ratings)
Using a muriatic acid wash is the solution of last resort for cleaning stubborn stains and blemishes from concrete. The acid works by dissolving the concrete to remove the stain and it can permanently damage concrete if mishandled.
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Comments
millerm8691 said
on 5/31/2008 I used too much muriatic acid on my driveway. It continues to degrade more and more each day. How can I prevent this from continuing?
ConcreteMan said
on 5/31/2007 Yes jagerbill is correct, the mixture should be a 50%/50% mix, we call this etching and NOT recommended for the average homeowner because one can really damage the concrete surface if inexperienced, or acid burn themselves. I recommend what I do every spring to my concrete work around my residence. Mix up a bucket of 50%/50% bleach and water and apply the same way; it cleans, brightens and removes those nasty leaf stains that occur through out the year.
jagerbill said
on 4/18/2007 mix 50% acid, 50% water in a watering can (large). Add acid to water not water to acid. Keep your head away from the top of the watering can. Pour this mixture on the effected concrete and if necessary, use a stiff bristle broom to work the acid/water mixture into the concrete. Wait 5 min. and hose off the area. If needed, increase the acid to water water ratio and repeat the above steps. Always try this before using straight acid.