GRP / smooth aluminium sheets
Our factory has been making our vehicles with GRP roofs as standard since the 2013 model year.
From the 2009 model year, a GRP roof could be purchased as an optional extra. Until then, smooth aluminium sheets were used.
Our solution to prevent damage caused by the effects of weather is glass reinforced plastic, or GRP for short. GRP is an extremely robust and resistant fibre-reinforced polymer made of epoxy resin and polyamide. The benefits of the material lie in its high impact resistance, even in extreme weather conditions. A GRP (glass reinforced plastic) body describes the exterior material of the sandwich panels for the walls, flooring and the roof in caravan/motorhome compartments.
In general, the roofs of our vehicles can be walked on to a limited extent. The maximum roof load is 100 kg. This means that point loading should be avoided when accessing the roof as this could dent it. We therefore recommend always using a large underlay (e.g. polystyrene sheets) so that the weight is evenly distributed across a wider area. If you want to further avoid scratches, the roof can also be protected using a cover.
The roof should also regularly be cleared of snow if snow is prevalent in your region. This is because when large amounts of snow thaw, it creates ongoing water pressure on the roof openings, which is detrimental to the vehicle and could facilitate leaks. Alternatively, the roof can also be supported (propped up) in self-supporting areas. Please avoid point loading around the ceiling and flooring.