Another good reason to replace the rubber roof with
This before it blows off, premature fails like mine did or caulking starts leaking (which it will and there is a lot of it to check/replace). I will never live with another rubber roof longer than it takes to get it sprayed by RV Flex Armor. I no longer want to have to worry about that leak that I don't know about that is destroying my rig and turning it into salvage value.
Would I spray a brand new rubber roof? Not only yes, but before I ever moved in and would just consider the cost part of the initial purchase price.