Cleaning a Yurt Roof?

[Wintergreen282]

Yesterday I washed my yurt with water and a bit of dish soap - prior to a nice rain (final rinse) and before the hordes of spring bugs arrive. It was very easy and looks fantastic! But higher up on the roof could use a scrub too - even more so.

The step ladder only allows a certain amount of reach. And there are steps and a walkway around a 1/3 of the yurt that makes step ladders not feasible.

I have an extension ladder too, but not sure if I can carefully lean it against the edge wo/hurting the canvas. Maybe some sort of homemade ladder attachment that distributes the weight and protects the vinyl with a soft, cushy layer?

Unless discouraged to best just live with a dirty roof, I'll probably make some sort of long handled tool with a scrub brush attached and perhaps weighted a bit and gently clean what I can. But figured I'd see if anyone else has thoughts, ideas, or experience with cleaning yurt roofs. Thanks!