How to re-caulk RV trailer roof?

[peterspeter]

I'm recaulking my RV trailer. Going well except these heavy lines of something slathered on the roof. When I try to lift, it seems the rubber roof lifts with it. How can this be repaired?
Here is a pic of the roof:

(Moderator edit to show picture)

Is there a good product I can go over this with?
We got the trailer for cheap and the look of the repair isn't as important as making sure it won't leak in the future.
For the smaller caulk lines I'm using thermoplastic caulking that people use for caulking outdoor window trim which is going well.
Thanks in advance!

[katysdad]

Not a repair. Original self leveling lap sealant such as DICOR. Unless loose its almost impossible to get off of the rubber without inflicting damage. Just wash roof with a mild detergent and let dry. Recoat all joints, fittings, and hardware with lap sealant for rubber roofs.

[valhalla360]

Use RV lapseal and just go over it making sure to cover the edges.

Don't use random non-RV caulk. I'm not sure what you mean by "thermoplastic" but if it contains silicone, you may run into an issue where nothing will stick to it. Or if it contains harsh chemicals, it could damage the rubber roofing.

[Lwiddis]

I’m a Heng’s fan too. Never look for, or care about, beauty in an RV roof. Look for recent maintenance.

[2oldman]

I use Heng's rubber roof seal. Thin, goes on like paint. No leaks. Would cover all that and make it look a lot better.