Fading Front Cap paint issues, questions

If its a new 2018 trailer, is that not covered by warranty? Dealer should take care of it.
Unless you are talking about after many years of use.

On my GD 2017, not sure but the black appears to be a decal. On mine I have some "rock" chips through the black and it shows white. I touch it up with black paint.

Is it pain or gel coat? Not sure about grand design but most RV's are gelcoat unless you get into the really high end bus conversions.

It helps if you keep them buffed and waxed but there's a reason most pleasure boats are white. It doesn't show the chalking and fading as much, plus it absorbs a lot more heat in the sun.

Paining the end caps really shouldn't take much except for the removal and replacement of the vinyl graphics.

This has been a well known problem for many years.

Paint checking has been an issue in even some of the high dollar brands.

Clearcoat peeling on Motorhome railing sides and front and rear caps has been an issue since the 1990's.

I have a 2001 Beaver coach that has both of these issues. I have painted my side rails successfully myself. I have taken care of redoing my fiberglass roof paint and am working on the front and rear upper caps due to clearcoat peeling off.

My coach is parked at home, out in the sun 24/7 and that sure doesn't help. If you have a garage or covered rv port it sure does help, but if you fulltime it is again always out in the sun and the weather.

Any dark surface, even automotive paint, will fade if given enough bright sun.

I'm guessing you are looking at a new trailer and the GD made the list. You can let us in on your plans, most folks here don't bite and it will focus advice.

FWIW, if a trailer landed on my driveway, gratis, with a dark gelcoat front cap, I'd apply the best UV protectant on it and use the rig. If it faded in a few years, I could paint it.