RV covers will prevent potential roof damage from moisture but it won't protect from hail or the weight of snow. Use slanted/pitched sheathing under the cover to help shed snow and protect against hailstones.
Weather apps do a good job at providing information on approaching snow or hailstorms. With this information, you have time to move your RV out of harm’s way.
This can be in a commercial facility or in a structure on your own property. Possibilities include garages, pole buildings, metal RV carports, etc.
Tree limbs can break off during hailstorms or from the weight of snow, sending them crashing onto your RV. To minimize the chance of roof damage, avoid parking under trees when snow or hail is a possibility.
Even if the snow falls as light, fluffy powder, it will eventually start melting and turning to ice. The repeated freeze/thaw cycle of ice on the roof of your RV can potentially cause all kinds of damage to seams and fixtures.
By retracting your slideouts before a hail or snowstorm, you can protect the slideout roofs/slideout toppers from potential damage.
While comprehensive RV insurance can’t prevent roof damage, it can provide peace of mind that you are protected from the unexpected, like being caught unprepared in a hail or snowstorm.