Many RV owners focus on leveling while camping, but rarely think about it once the RV is placed into storage.
In most situations, an RV does not need to be perfectly level during storage. However, maintaining a reasonably level position can help reduce unnecessary stress on components and may improve how water sheds from the roof and exterior surfaces.
One consideration often overlooked is the slide-outs. When slides are extended, the RV exposes additional seals, trim, and openings to the elements. Bulb seals and blade seals are designed to help keep water and debris out, but prolonged exposure to sunlight, weather, and temperature changes can accelerate wear over time.
Extended slides can also create additional sheltered areas around slide mechanisms and under-slide spaces. While rodents and other pests can sometimes access an RV regardless of slide position, extended slides may provide more opportunities for nesting, shelter, or entry.
For owners storing an RV for extended periods, keeping slide-outs retracted is often the preferred approach unless the manufacturer recommends otherwise. Retracted slides generally protect seals, reduce exposure to the elements, and minimize the number of openings that pests can exploit.
As with many RV maintenance topics, the best approach is to consult the manufacturer’s recommendations for your specific RV while periodically inspecting seals, slide components, and storage conditions throughout the year. If you are not sure what the best approach is, sometimes advice from a professional is all you need.