X2. Debris getting on top of the slide must be removed before retracting the slide if you don't want any inside, or avoiding tearing up the rubber seals. One time my slide had snow on top. When I retracted the slide (senior moment) it did a lot of damage. I had to extend the slide, climb atop the snowy, icy, roof, carrying a broom, and clear the slide roof.
Usually topper fabric is warranted for 2 years, so it may require replacement frequently.Toppers do flap/pop in winds, depending on direction.
2000 Winnebago Ultimate Freedom USQ40JD,
ISC 8.3 Cummins 350, Spartan MM Chassis. USA IN 1SG 11B5MX,Infantry retired;Good Sam Life member,FMCA." My fellow Americans, ask not what your country can do for you, ask what you can do for your country. John F. Kennedy