Read the instruction in the owners manual for the roof. Most of the rubber roof manufacturers recommend a mild detergent and a scrub brush and rinse well. When we had a rubber roof, I used powdered Spic-N-Span and a boat deck brush. Most of the after market products are not necessary and are really just to make the owner feel good that he is doing something for his RV. The guy selling the products will appreciate your effort more than the roof.
Ken
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Amateur Radio Operator (KE5DFR)|No Longer Full-Time! - 2023 Cougar 22MLS toted by 2022 F150, 3.5L EcoBoost Tow Max FX4 Lariat Travel with one Standard Schnauzer and one small Timneh African Gray Parrot, retired mechanical engineer
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