RVs with rubber roofs may get white streaks caused by the natural oxidation of the rubber roofing material. You can minimize white streaks by washing the roof twice a year.
Keep in mind when you are washing a rubber roof that the oxidation on the surface acts as a barrier to further oxidation of the rubber below so your goal is not to eliminate all the oxidized material but only to remove the chalk or powder buildup that will cause the white streaks down the sides of your RV.
To maximize the life of your roof use a soft brush (the same one you use to wash the rest of the RV should do) and avoid excessive scrubbing.
Find more info on RV rubber roof care at RVbasics.com
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RV Repair and Maintenance Manual – Updated and Expanded The most popular resource for RVers who prefer to work on their own RVs. Featuring step-by-step procedures for maintaining and repairing RVs,
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For maximum performance and overall service life for your RV; inspect your roof regularly. Also, keep the roof clean and free of oils and debris will give you maximum years of protection and performance. For a long-term roof solution just apply one coat of RV Roof Magic which provides outstanding characteristics not found in other coatings.
Now you don’t need to worry about these white streaks because I got a solution for this. Liquid RV Roof Magic by EPDM Coatings will not only give a professional look but it will increase the longevity of your RV by making it exclusively waterproof with a single coat. No need for a second coat. A 10-year warranty is offered. And it is very easy to apply. No need to hire a professional, just open the gallon, clean the roof, apply a seamless application on your camper’s roof and enjoy the stress-free vacations.