



Dried polish?
I had a company apply ceramic coating yesterday. I am very confident this mark/residue was not there before but they say it was existing. The car sitting, this was me looking at the car as they finished. They had three people working on the car the entire time.
First they said it was failed clear coat, then later said it was external material etched from not cleaning it for long periods.
Picture 1, you can see the stain very clearly and it can be felt to the touch.
They said they clay barred and polished it and the residue didn’t come off. This was the finished product after the ceramic coating on the car.
Picture 3 and 4, I did a localized wash and got the stain residue off and smooth to the touch. I don’t understand why they couldn’t get it off when they washed the car.
Could this be dried polish or some other solution? Just wanted to get some responses on what it could be for my own information.
Update question: if the mark was left from bird poop, why were they not able to remove it or make it less apparent in picture 1, but I was able to almost remove it entirely with dish soap in picture 3 and 4?
Overall, they did a good job and I’m happy with it. The car has its fair share of scratches, rock chips, and dents and dings. I am very confident this stain wasn’t there before though.