Originally Posted by Jake21
Just curious, why arenít motorhome roofs painted? Seems crazy that I see these coaches on the road with those ugly white chalky streaks down the sides, mine included. Why not just use auto paint and paint the roofs white or silver?
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Since you don't say what year/make/model/chassis AND ROOF your coach has /is, it's hard to say what you really need for your particular roof. Some are fiberglass, some rubber (or variations of rubber) and some are aluminum. ALL roofs will weather over time. Some will show more signs of it than others. Both rubber ones and fiberglass ones will show weathering before the aluminum ones will.
Rubber ones, if they're badly weathered, and are losing much of their original coating, can be washed, prepped and re-coated with a variety of specific coatings made for those kinds of roofs. Fiberglass ones can get chalky too. But, not many will paint them as a protective measure. I have kept mine up since we purchase it over 7 years ago by simply washing it every now and then. I did a polish with some rubbing compound and a machine about 5-6 years ago and, it's still looking great with ZERO chalking.
So, yep, there are protective measures one can take to get their roof into top shape. But, automotive paint is almost never done or, at least it's never been reported on here and other RV forums that I know of. I guess you could if you felt it would be your best approach to this dilemma.