I use a spray bottle to apply to a clean roof in an area about 4 feet by 2 feet. I use one microfiber cloth to wipe the 303 evenly into the roof and another clean one to completely dry. I switch cloths when they get too dirty or wet. I use it on everything on the roof but the solar panel. Have fun!
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2023 Newmar Bay Star 3014, towing 2014 Honda CRV
2017 Winnebago Adventurer 35P
2013 Itasca Sunstar 26HE