Fiberglass Roof cleaning

I wash my roof everytime I wash the MH.

IMO, EVERY roof should be cleaned and waxed at least ONCE a year. Twice is even better. I wash mine when I wash my coach, no different than washing the roof of the Corvette.....Dennis

I would clean it once or twice a year just like the rubber roof. Does it NEED to be cleaned? Probably not. I've seen many RV's where the owner obviously has not spent one once of effort to keep it clean. Sooner or later whatever collects on the roof will run down the sides.