REMOVING BROWN SPOTS FROM RV ROOF VENTS
After a long, hard summer in the heat and humidity it is time to give the rubber roof and everything else on the roof of our RV a good cleaning. First I give the rubber roof a good cleaning with Korkay (Awning and Black Streak Remover). I typically use the product straight from a spray bottle, some Spic-N-Span in a bucket of water and a used Scotch Brite. This method has worked well for me and I know there are at least a hundred other methods used to get the same results. Then I tackle the vent tube caps and the refrigerator vent, which typically has brown spots all other them. Tried the Korkay and Scotch Brite but this only minimized them. Finally used a somewhat course steel wood pad and Meguiar's Cleaner/Wax. Takes them right off and if I give them a good coating, I don't see as many spots the next year and if there are, they come off with minimal elbow grease.
