The black indicates sun damage? That's a new one to me. Ours is in the NM/AZ sun constantly and is still as white as it was 6 years ago. I clean and treat mine once a year.
Lots of products out there to renew rubber roofs, like arpipeliner suggested. And if yours turned chalky and black with treating it twice a year, I would try something different.
Personally, I would trade the unit before I replaced a rubber roof.
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Scott and Liz - Southern NM
2012 Wildcat Sterling 32RL - w/level up (best option ever)
2007 Chevy 2500HD Duramax
Reese Fifth Airborne Sidewinder
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