Resealing roof

I bought dicor tape and sealed everywhere on my roof that had caulk on it within the first 6 months of ownership.Decided to stop a problem before one started.Kind of a profalactic solution.Only cost 100 bucks to do entire roof and three hours time.You could do the same even if you only do the problem area.With caulk once its has gotten dirty its really hard to tell where the leak or crack in the caulk might be unless its obvious.I shouldnt have to touch my roof with tape or caulk ever again.Usually once you notice a leak its done its damage behind the scenes already.Learned my lessons on previous rvs.You can inspect your roof every year and miss slight cracks in caulk everywhere.