How to Clean Stubborn Paint off Concrete

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  #1  
Old 07-05-19, 10:05 AM
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How to Clean Stubborn Paint off Concrete

I'm on a mission to renew my concrete. I've pressure washed numerous types of paint (probably all latex of some sort) off of my old porous concrete using 3000 psi and 0 - 15 degree tips, but this one particular paint is very stubborn.

I think what I need is some sort of chemical to soften the paint. We can assume its latex. Any suggestions on chemicals or other methods to remove the paint?

Thanks
 
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Old 07-05-19, 10:12 AM
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Latex can be softened up with denatured alcohol but latex usually removes fairly easy, I'd try a paint and varnish remover.
 
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Old 07-05-19, 01:40 PM
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Thanks....I have landed on a paint and varnish remover, KWIK-STRIP, from Lowe's.
 
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Old 07-05-19, 02:11 PM
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Pressure washer is about the most extreme removal method, cant imagine a chemical would do any better, let us know!
 
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Old 07-07-19, 11:56 AM
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Trying various methods, so far unsuccessful. Will post results when paint is removed or I give up!
 
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Old 07-08-19, 02:58 AM
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It sounds like the paint might have soaked deep into the concrete which complicates removal
Wish you luck!
 
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Old 07-08-19, 07:54 PM
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Paint is definitely into concrete pores. Tried numerous chemicals, even soaking overnight. No luck. Have resorted to removing paint with pressure washer at 3000 psi and 0 degree nozzle. Is working very slowly and is taking a small, basically unnoticeable amount of concrete with it.
 
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Old 07-09-19, 04:01 AM
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basically unnoticeable amount of concrete with it.
May be unnoticeable to you, but that concrete is now open to deterioration and environmental elements and will begin to fail quickly if not sealed. Freezing weather is your worst enemy. You may want to paint it.
 
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Old 07-09-19, 05:03 AM
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I'm considering painting or staining it anyway! Any suggestions on brand / type/ etc of paint?
 
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Old 07-09-19, 05:27 AM
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I wouldn't paint exterior concrete although a concrete stain should do ok. I'm partial to the H&C concrete stains sold at SWP.
 
  #11  
Old 07-11-19, 07:55 AM
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Tried another paint remover and it worked.

https://www.homedepot.com/p/MULTI-S....764A/306698149

Was reluctant to try "green" removers with no MC, but gave in and tried this one anyway. Painted it onto wet concrete, covered it overnight, and 98% of paint pretty easily washed off with 15 degree tip.
 
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