In my reply to you, besides the hardness questions and answer, I also brought up the chemical resistance feature. See post #7
And after discussing the problem with water spots, I mentioned it has been raining here to the point the Government put out a Flood Warning over our TV last night and then I said or typed this,
As promised,
I installed this coating last Wednesday, today is Tuesday, 6 days later and it's been raining constant and then the sun comes out and DRIES the rain drops on all cars.
I could not see a single water spot or water mark on the coated paint.
Now this doesn't automatically mean no matter where you live on Planet Earth, if you use this coating you wont' get Type II Water Spots or any kind of water marks on your car after it rains, you rinse the car or a sprinkler goes off an plasters your car with water. What it means is right here in Stuart, Florida, the water we have did not land on the paint then dry on the paint and leave a water spot or mark.
That's a good sign but not all inclusive to the rest of the water on Planet Earth.
See my article here,
What's in the water?