Good point pnichols...below is from FAQ from the website for place in FL.
What happens if I ever have to replace a part on my roof?
When we do your roof, we replace almost all the plastic components of your roof. The only exception at this point is skylights, we will replace them for our cost for a customer. All your lids can be replaced by removing them from the base. If you somehow damage a base or frame, a cutting wheel or grinder can be used to get to the screws and free the base from the coating. You would then reinstall the part and caulk around the joints. As soon as possible, bring back your RV and we will prep and respray that damaged area. The chemical bonds back to itself so you will not even be able to see where the repair was done.