Micheal,
The Reach & Wash residential kit is ideal to get to windows you can not access from a ladder, as a long as there is a straight line between you and window.
The poles have a angle crank adapter, so you can put the brush at any angle to window.
I also find them good for doing facia, soffits and outside of guttering, at Ionic this is our starter system for users in soft water areas that can access water on site.
If you require a system where you need to take the water with you, we specialise in truckmount and trailer systems.
For further details on The Reach & Wash System please dont hesitate to mail me.
reuben@ionicsystems.com regards
Reuben