Packing a professional strength cleaner that’s gentle on your RV roof but tough on dirt, this all-purpose cleaner is our best RV roof cleaner review’s Premium Pick. At around $35 it may seem pricey, but you get a lot of deep cleaning for your money. The one-gallon container contains a concentrate which you dilute to use, meaning you have a supply of cleaner to last several full RV washes. The biological deep cleanser is non-toxic so kinder to the environment as well as to your roof. Used with a sponge mop, this cleaner is effective in removing black marks, road grime, tree sap, mold and oxidation, without harming the membrane on your RV roof. Safe for all types of RV roofs, the Dometic Roof Cleaner also leaves behind a protective, UV-resistant finish.