What darran said 👍👍
Soft washing is absolutely great to get into and especially if you already use wfpoles. As far as im aware, I was the only window cleaner/external cleaner in my areas. (As I can not find another cleaner to take some jobs for themselfs and all the chaps who I have asked have all said the same. They are only aware of me doing so)
As far as soft washing render etc is concerned.
As regards to pressure washing, unless you can afford the bigger more powerful & hot/steam machines then the machines that Darren has mentioned will do the trick, followed by a soft wash and then a final rinse will get the job done.