I can also recommend "Eternabond Roofseal" tape over the the caulked seams. You can get black to go over the areas where it would show from the ground, if that is the color of your coach, like ours. This gets the caulking covered by another layer of protection from the Sun.
You do this at your own pace with cleaning the surface with rubbing alcohol, before applying and then inspection of your roof is only a wash down to remove grime and observation if any of the tape is coming loose. This tape really sticks, so that's not much of a problem.