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Old 08-30-2011, 04:48 PM
Join Date: Mar 2003
Posts: 8,716
Getting spray paint off concrete?

My wife decided to spray paint some objects on our front walk using only one small piece of newspaper. I have no idea why she thought that'd be a good idea.

How can I get it off?
Old 08-30-2011, 05:00 PM
Join Date: Feb 2007
Location: Challenger Deep
Posts: 10,445
I asked the same question about a year and a half ago.

Your wife was spraypainting stuff in my driveway, too.
Old 08-31-2011, 04:31 AM
Join Date: Jan 2010
Location: Norfolk, VA
Posts: 1,031
I have used a stiff brush with a diluted mixture of water and Muriatic Acid to successfully remove spray paint from concrete. Google it for suggestions on its safe use and mixing, This acid is available at Lowes, Home Depot, etc. and costs about $8.00 a gal.
Old 08-31-2011, 08:16 AM
Charter Member
Join Date: Jun 2000
Location: Nangarhar Province
Posts: 8,044
Will it kill grass? I need to get exterior latex paint off my sidewalk. Who paints a sidewalk?! I dont want to kill the grass though.
Old 08-31-2011, 11:56 AM
Join Date: Apr 1999
Location: Ohio
Posts: 10,470
Pouring a solvent on it may work (e.g. paint thinner, acetone, mineral spirits).
Old 08-31-2011, 11:58 AM
Join Date: Mar 2010
Location: Arizona, USA
Posts: 2,830
Paint remover.
Old 08-31-2011, 05:20 PM
Join Date: Mar 2009
Location: TX
Posts: 1,801
It will fade out naturally from regular use in about a year.
Old 08-31-2011, 06:29 PM
Join Date: Jun 1999
Location: Texas... Need I say more?
Posts: 2,042
Solvents generally don't work all that well on latex based paints. Seeing as how your SO used a spray paint, I assume that the paint is probably an enamel of some type, on which solvents will work. The degree of efficiency will be determined by how long the paint has been left to dry. And yes, most (if not all) solvents that will remove the paint, will also remove any vegetation.
IMHO, your best bet is going to be a good pressure washer. I've had very good success with removing all different types of paint from concrete sidewalks with one.

ETA: Missed your post about it being latex. If it was very recent, a wire brush may do just fine. If the paint has already cured, a pressure washer will definitely do the job without killing the grass.

Last edited by JBDivmstr; 08-31-2011 at 06:34 PM. Reason: Missed post.
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