We have a 2010 Crossroads Cruiser, the rubber roof rolls down the sides about 3 inchs. We have always covered our units (2). I no longer cover the Cruiser. purchased a new Adco cover for the winter of 2011, in the spring of 2012 unhcovered and found 4 cuts in the roof material, probably caused by cover movement. With a flat roof ng this probably would not have happened but since the material rolled down the side there was nothing to protect the roof material. No covering this RV again.