OK...so I got caught in all this snow with my slides out. As of now, there's about 14" of accumulated snow and ice on top of my fifth wheel, with the slide deployed. I tried to get up there to brush...
Had to do that when I had 2" of ice frozen to slideout roofs and we were getting ready to leave a CG.
When it was just snow I used a brush to sweep off......but ice needs to be melted. Ice can build up/expand under top wiper seals and leak inside when it melts.