Eric: I've had two motor homes with "rubber roofs." I did a lot of researach in the maintenance and such on how to maintain them. I went back to that posting that I made over a year ago on this subject and rather then trying to repeat what I wrote, I did a "copy and Paste" to bring it forwards. Here's what I wrote on the subject back then.
Quoting: "I did a "google" on rubber roof maintenance and eventually found this site that I think would answer most of your questions. But over the past few years when I had rubber roofs, here's some skinny on what I learned about rubber roof maintenance.
#1, clean the roof with plain soap (I used plain old Borax from a local store, worked great) using a soft bristle brush. That's it------there is no need to add anything on top of that, your just wasting money. In fact, I have a gallon of glook I got from Camping World couple years back that I'd give away if someone would just come by and get it.
#2. Never use any type of a cleaner that has a petroleum or citrus base. Will soften the rubber and destroy it.
It is generally recommended to clean the roof twice a year especially if your unit sets out all year long.
I hope this helps you in your cleaning work.
http://groups.google.com/group/alt.rv/b ... um=4&hl=en