How to Deal with Cement on the Car?

3 Answers
VonSophie
07/29/25 6:40pm
Here are the methods to deal with cement on the car: 1. If the cement has been on the car for less than 12 hours, the solution is to first wet and soak it with water, then use car wash liquid and a towel to slowly wash it off. 2. If the cement has been on the car for more than 12 hours, it will have hardened by then. You can purchase acidic water from a pharmacy, then use a brush to wet and apply it to the cement area. The cement will be dissolved by the acidic liquid and can be rinsed off with water. You can also try the following methods: 1. Pour gasoline onto the cement, wait until the paint softens slightly, and then manually remove the cement (suitable for large-area removal). 2. Use a hair dryer to heat the area with cement. Due to the difference in thermal expansion between cement and plastic, the cement will usually fall off automatically. 3. Spray white vinegar onto the cement with a spray bottle, wait for 3-5 minutes, and then gently scrape it off with an old bank card. The cement will come off in chunks. Afterward, wash the area where the white vinegar was sprayed with car wash liquid multiple times.
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VanGenevieve
08/14/25 12:02pm
My little white car got into trouble last week. I didn’t notice the construction nearby when parking, and the next day I found a lot of cement splashes on it. Never wait for the cement to dry! I immediately grabbed a few bottles of mineral water, rinsing and wiping while it was still semi-dry, using a sponge to gently remove most of it. After that, I used a clay bar with plenty of lubricant (soapy water works too) to polish away the remaining marks in circular motions—it took about a dozen passes to get it clean. If the cement has hardened into clumps, remember to use a dedicated cement dissolver to soften it first; scraping it hard will scratch the paint. Lastly, a reminder: never use acidic cleaners, as they can react with the cement and corrode the paint!
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SanNaomi
10/14/25 7:33am
Dealing with cement on car paint requires proper timing and methods. I once witnessed a neighbor scrubbing hard with a steel wool pad, only to end up with completely scratched paint. The safest approach is to immediately wipe it off with a wet cloth if the cement is fresh. If it has already hardened, I recommend purchasing a neutral cement remover, which can be bought for around 20 yuan on Taobao. Wear rubber gloves during the process, apply the remover with a sponge, let it sit on the cement for 5 minutes until it turns muddy, then rinse with water. Removing cement from the windshield is even simpler—just scrape it off with a bank card, as glass is harder than cement and won’t easily scratch. Finally, apply wax to the entire car to protect the paint—this expense is worth every penny.
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