Alpha ply recommend me to use Murphy oil soap or dawn, I used MOS, 2 days ago. That did a great job, the roof looks a lot cleaner, not like new but close. I'm not sure about the benefit though, but I took the opportunity to inspect the sealant and all is good .
My problem is the awning near the roof, its stained and nothing seems to take them off, name it I've tried it, Clorox, magic eraser, oxyclean, vinyl cleaner for car interior, high pressure was...no succes, so im done , I wont look at the awning anymore :-)
Jayco Whitehawk 24RBS 2014
Ford F 150 Ecoboost Tow Max 3.73 2014
Equalizer hitch 1000/10000