edwardsjethro

I have a 2005 Fleetwood southwind and there are white streaks (after a rain) down the sides and front of the rv. I guess it has a rubber roof and what i am seeing is oxidation. The local rv store has told me a good scrubbing and coating will solve the problem but only for 6 months and $700 ? Seems like there should be a better way to do this. Has anyone solved this problem?