OR 1. Scrape off all old lap seal/caulking prep and just use rv roof magic
2.scrape off and reseal all vents and such then use rv roof magic
3.just the product on all old caulking and vents and completely go over with rv roof magic?....
Asking different methods because all my old dicor/self leveling caulk is starting to crack and it looks like they have already been re patched/sealed once...so wondering if I can cheat and just prime and completely cover with rvroofmagic? Best advice appreciated thank you.