Ceramic coatings offer almost no UV protection.

[wemay]

They're of course great for protecting against other things like tree sap, bird droppings, water spots... to a degree but just a reminder, they offer almost no UV protection. Silicone dioxide is transparent to almost all of the UV spectrum.

Hi, OP,
Can you share a source for this? This comes as a surprise to me but my beliefs were all based on assumptions.

 

[chris719]

None do. It's simply not possible. The 'coating' what ever it may be is sub micron and really just fills tiny imperfections. Objective testing show UV protection to be utterly meaningless. With very few exceptions. One possible exception is 303 slathered on to black plastic.

CarPro claims their DLight coating has some meaningful protection. I will say that I used it 8 months ago on restored headlights and they have stayed crystal clear so far. It has a noticeably thicker film build than all other ceramic coatings I have used as well. I am awaiting some real objective testing.

 

[chris719]

Hi, OP,
Can you share a source for this? This comes as a surprise to me but my beliefs were all based on assumptions.

Watch Dmitry's Garage on YouTube, he's tested like 20 coatings and none protected his paint chip against UV fading. The coatings say they may have UV protection but what they mean is they have some antioxidant capability to protect themselves from getting destroyed by the sun, but that's it.