IMO roof mtce. should be done by the owner; it's relatively easy, relatively inexpensive, you do it when you need to vs waiting months for a dealer to do it for you and you know exactly what you have "up there" vs always wondering when the first drip is going to fall. To me it doesn't make sense to pay a guy $145 hr. to clean, scrape and reapply sealant.
As far as existing, it is probably dicor but a previous owner may have used who knows what. If there are problematic areas just scrape it off and reapply new dicor. The application is easy, removing the old, or if just dirty and with a crack or two - cleaning, isn't hard. Just use alcohol and rub away. If they used silicone up there it needs to come off and that can be a chore...but it can be done.
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Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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