Plastidip the roof????

Your thinking of Flex Seal on TV. Plasti-Dip needs to be sprayed pretty heavy to add any kind of real protection.

You should probably prep the rust first (sand it down and spray with primer) and then use the plastidip. I have a good amount of white plastidip on my roof/ rear of cab covering the rub marks in the paint from a camper shell boot. Its been on there for close to two years now and still looks good. Its yellowed slightly but unless you knew it was there you can not tell the difference between it and the real paint.

My truck is starting to rust a bit in the gutters from the fantastic peeling white paint Nissan used and I will be doing the whole roof eventually.

Flex Seal, That's it.
I've used it to stop leaks in the patio.
Worked great.
I plane on fixing the rust and any holes.
Not leaking yet.
I just want to put something on it that will last a long time.
I wanted to bed liner it, but can't find it in white.