Dried Cement on Paint

[mcpp66]

My first post in a long, long time. Anyhow, I was detailing my girlfriend's 2012 Honda CR-V and I came across what looks like dried cement on her paint. I tried like hell to get it off but to no avail. First I started off with DP Cleanse-All (undiluted) and then used Tar-X because at first I had no idea what it was. I then even resorted to using a brillo pad to try to "scratch" it off but also no luck. The only thing that accomplished is that I had to buff around that area to remove the haze that I created. It also reinforced that sometimes you just have to let some things go. Lol. Anyhow, my last thought is to try to use a plastic razor but that thing is stuck on her paint so badly that I'm afraid that any other aggressive attempts to get it off will possibly remove paint. Are there any other types of cleaners or chemicals that I can use to try to get it off? Again, I'm not sure this is dried cement, but it sure looks like it. Thanks.

[14Shelby]

I had this happen to my Super Duty. I tried everything to get it off, even tried sanding it off. Finally, I found good old fashioned white sugar and water will dissolve the cement where vinegar and stronger acids wouldn't touch it. Unbelievable, I know.

[mcpp66]

White sugar and water...really? Wow, never heard that one before. How much sugar and water did you mix? How did you apply it? Did you let it soak? How long till it dissolved?

[FUNX650]

Here's another option for dried-on (cured) cement:




Bob

[MDX Detailing]

I just used the sugar trick today. I asked about cement about a week ago. I've used it several times the past week, it works amazingly! I used 4 pounds sugar and just slowly added water to it was a nice thick paste and really well dissolved.

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[mcpp66]

Since what I showed in the picture is all there is I guess I wouldn't need to use 4 pounds necessarily, but rather just mix enough sugar and water to form a paste, correct? I then assume that I just put the sugar-paste solution onto the cement and let it sit? How long did it take?

[mcpp66]

I assume this is safe on the paint?

[MDX Detailing]

If it's not dissolved enough and you rub it real good id imagine the sugar granules could mar the paint slightly, or the dissolved cement could mar. But it's not gonna eat the paint. Same thing with the bought stuff, very safe. So far every time I've used it, I've followed up with claying and an aio anyway

Sent from my SCH-I545 using AG Online

[MDX Detailing]

I let it sit for about five minutes. No you wouldn't need 4 pounds. Don't let sugar dry on you though. Keep it wet

Sent from my SCH-I545 using AG Online

[14Shelby]

I can't recall how much I used, but it was in a sprayer bottle. A paste would work too, just let it sit for awhile to dissolve the cement.