How do you clean a stain off concrete?

Answer 1

OK, that is stamped concrete. things you don't want to use are a pressure washer. It will blow the release color off the concrete and destroy the area you are trying to save. first you will want to remove any sealer on the the affected area, you can do this with xylene (you can get it right at Home Depot) this won't hurt the concrete or the color, and will re liquify the sealer (if it is a topical sealer) once you have use the xylene clean the area with denatured alchohol to remove any residule sealer, once you have done that scrub with a non caustic cleaner such as simple green. if the stain still remains your best option is to contact somone experienced in concrete and have them remove the small stained area and replace it. I did stamped concrete for years so i know what i am doing with this. if i saw this i would do the things i said and if it didn't ome clean i would use a grinder to remove the small section that is orange and then repour it using a high psi mix hand tinted (id mix and pour samples at home first to verify the correct color to concrete ratio) and then just use a small edge stamp to redo the texture.

Answer 2

Good luck. I did that several years ago and never could get it off. I ended up painting the concrete. You could try muriatic acid, though, that's the only thing I did not try, just because I'd never heard of it.

Paint stripper.

Answer 3

There are two general methods to staining concrete: Acid stain or water-based stain.

Acid stains chemically react with the concrete and provide various earth tone colors. Once the stain is applied, cleaned and pH neutralized, a sealer is required to protect the stain. I've found Gayegoodman.com as a good source for acid staining. Water-based stains are in a water based solution that incorporate pigments or dyes. Most require a topical sealer after applying the stain. One advantage of water-based stains is that you can better control the color (e.g. the color isn't dependent on a chemical reaction as components in concrete can vary) and water-based systems often provide a broader spectrum of colors. Yet if applying this system on indoor concrete, an added step of either grinding or chemically etching the surface will be required in order to open up the pores of the smoother, hard trowelled concrete.

We make a combination water-based stain and penetrating polyester sealer in one product, thus eliminating the step of requiring a topical sealer to protect the color from wearing away.

Answer 4

Try paint stripper or pour some WD40 on it, let it sit for at least an hour and then rinse it off with the hose. Should work perfectly.

Answer 5

There is a very environmentally friendly product line Synpro. They carry a product call concrete cleaner. Check them out at www.synproproducts.com. Very knowledgable staff.

Answer 6

Paint stripper.