I have started to take off my baggage doors (not basement type) so I can do a proper paint job on the bottom of our 1990 Champion Lasallle motorhome. The bottom sides are galvanized metal except where...
I am not a painter but have dealt with galvanized quite a bit. I have found no paint that sticks to it very well. I think that's why most all galvanized boat trailers are not painted. I think powder coating might do it but even then on my wheel house in the boat I have a hatch that is galvanized it is powder coated black. The paint is just peeling off it. Still the hatch is in great condition no rust no corrosion but no paint as well.