Darrold welcome to the Newmar forum and irv2.
You didn't say if it was a fiberglass roof but my rubber roof needs cleaning and the front and rear caps need it also. The finish on caps seem to fad from the hot sun but if cleaned and polished they will shine but not as good as the face of the caps. You will not notice the finish line from street level you have to be on roof to notice the change.
Enjoy the forum and all forums on irv2.