Removing Concrete Specks from Paint

J

jsoto

New member
Is there any safe way to remove concrete specks from paint. I have 4 or 5 spots on my hood and arggh...my car is jet black. I'm sure this stuff is bonded to the clear already so once it's removed, it ain't going to be pretty regardless.



Any tips or info you can provide would be much appreciated.
 
Mix 50/50 water with white vinegar, and using a spray bottle, spray that mixture on those spots and let them "soak." Then rinse with water and repeat as necessary.
 
Interesting.....Will it dissolve the concrete like how tar remover does ? I've got my fingers crossed !
 
Carefully try a plastic razor blade, or the edge of a credit card... you might be surprised! This is how (one method) we remove traffic paint 'overspray'.



Some sort of a solvent - lacquer thinner, if you must, may help, also.



Jim
 
If the mix of 50/50 water/vinegar mix does not work, use the distilled vinegar pure strenght on the concrete spots. Saturate a clean kitchen sponge with pure vinegar and hold the sponge over the concrete spots for a few minutes. The acid in the vinegar will help etch and dissolve the concrete. I've use it on my pickup with great results. Rinse the area with water after the vinegar and then reapply wax or sealant to that area.
 
What i've done in the past with success is put the vinegar into an eye dropper and put a drop on the concrete without getting on the paint. This allows for a stronger mix of vinegar.
 
~One man’s opinion~



My guys tell me that ‘oil’ will only work on concrete that’s not been on the surface for very long. But if you apply a 1:1 ratio water with distilled White Vinegar solution, and using a spray bottle, spray that mixture on those spots and let them "soak." Then rinse with water and repeat as necessary.



If the water/vinegar mix does not work, use the distilled White Vinegar 100% on the concrete spots. Saturate a clean kitchen sponge with pure vinegar and hold the sponge over the concrete spots for a few minutes. The acid in the vinegar will help etch and dissolve the concrete. Rinse the area toughly with water after the vinegar and then reapply wax or sealant to that area.



Hope this helps…..



Experience unshared; is knowledge wasted…/
 
Ok, heres the ticket....And I'd have pic's but my son used the "movie" option on my digital camera...anyway...

Dont be afraid to use the Vinegar full strength, its not that acidic, or we wouldnt be consuming the stuff, just make sure its 5%. Im not sure if it matters if its white or red, i used white, and this techniqued worked very well for me yesterday...

Also note the cencrete had been on the car for about 3-4 weeks....

Put your vinegar in a spray bottel

Tear off a small piece of paper towel, big enough to cover the spots in question, or big enough to cover several spot, your choice. Lightly mist the area your addressing, then apply the piece of P/T, it will "glue" itself to the spot, then lightly mist again to saturate the P/T. Recheck every 15 minutes or so to make sure the P/T is still wet, reapply if necessary....

Time is all dependant upon severity of cement splatter, i waited about 20 min max. Now the tuff part about removal is lifting the cement off, its very granular, the vinegar is only going to release its bond from the paint, you still ned to find a effective way of removing it. I had VERY good luck using a razor blade, VERY CAUTIOUSLY.....I also had good luck fingernailing/wiping it off with the P/T that was on it, just try to fold it up after every wipe...

The process does work, you just need to be patient....

See my post and pic... http://www.autopia.org/forums/showthread.php?threadid=29657
 
Heat the vinegar in a suace pan until it is about as hot as water when you wash your hands. Hot acid is always better than ambient temperature acid.
 
Gonzo, is that method tested ? I worry about increasing the acidity by possibly losing the water ratio while warming.....my .02
 
Acidity remains constant - you are not boiling it and letting it cool down so there are very little if any evaporative losses to change the water/vinegar ratio, just warming it up a little, to say about 120 degrees. The warmth makes it think its on steroids. I"ve used it to remove some heavily calcified water spots on paint and glass. Water spots and concrete are pretty much the same chemically - calcium carbonate, with the concrete being crosslinked with water
 
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