Like JamieGeek, I haven't sprayed my roof material. But, have sprayed 303 on the awning and all plastic items on the roof. I just rub it in with my hand, so I'm not wiping it all off with a cloth. I use it on my tire sidewalls as well as the black window trim. So far they all look really nice. Time will tell I guess...
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Pat & Becky & now Katie
Wenatchee, WA
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