Simplest and cheapest way to mount panels on RV roof is to use Z shaped solar panel mounts. You screw one side of the mount to the roof and another side of the mount to the panel and it’s done. The downside is — it does not work for round shaped roofs and also gives you no flexibility. You have to unscrew your panel if you want to troubleshoot wiring or just clean under the panel, that’s why better RV solar panel mounts were developed.
The best solar panel mounts for RV are those which allow you to tilt your panel to maximize sun exposure. It is especially important for the winter times when sun is low above horizon. Ideally solar panel should be perpendicular to the sunlight to gather most of it’s energy. The best solar roof mounts which allow you to do this look something like this:
Solar panel mounts for rv
There is one more special kind of mounts available — tracking solar panel mounts. Their feature is that they turn solar panel to follow the sun, thus maximizing exposure to sunlight. Usually people don’t mount them on the roof, but rather just put it outside in some distance from the trailer.