I just cleaned and conditioned my rubber roof. I used a two part (cleaner and protectant) made by Protect All, although I don't recall the name of the stuff. It took a little over an hour to do my 35'. Be careful up on that roof, though. It's a long way to the ground!
It was not too difficult using two spray bottles (one for each solution) and a couple of sponge mops.
Coyle & Sue
Cassity (Labrador) and Rylee (Standard Poodle)
2007 Damon Challenger 355; 2003 Element toad