Originally Posted by markopolo
I used a 6' ladder that I had secured a pad of high density foam at the top edge. I would lean the ladder against the side of my Roadtrek with the foam against the van. Lean it against areas that are strong enough and won't dent! You can get to the entire roof that way by moving the ladder to a few different places on each side. A 7' ladder might be better - I only had a 6'. I think it is safer to lean the ladder against the van than trying to use it stand-alone and reach across.
We do the same, but use an 8" stepladder with two layers of 1" styrofoam taped on. You can get higher, safer with the taller ladder. We use a "Washstick" to do to the washing from the ladder, but we can also reach the entire roof this way.