Safe for the environment but tough when it comes to grime on your RV’s rubber roof, we really like Thetford’s Premium RV rubber roof cleaner. As an easy to use two-in-one, you get a cleaner and conditioner specifically for your EPDM rubber roof. Plus, it can also be used on fiberglass or aluminum. With no toxic or abrasive ingredients, the formulation dissolves dirt and chalk accumulation, while protecting the rubber membrane and helping to extend its life. Plus, this camper roof cleaner has a UV blocker and is also biodegradable so environmentally safe to use. Simply apply the solution to your roof and scrub with a sponge mop to activate the cleaner and get it to work. Then thoroughly rinse and allow to air dry.