Cleaning bungalow roofs from a ladder - what equipment?

I'd like to consider buying some equipment that I can use to wash high walls as well as use on my own bungalow roof at home. I'm a gardener with no experience of window cleaning gear.

Can anyone please help suggest what set up I could use, with a long brush on a pole as well as a pole system that would let me do the roof from a ladder please? I'm not getting up on the roof myself!

Would this type of thing be any good? https://www.ebay.co.uk/itm/30ft-Telescopic-Water-Fed-Cleaning-Pole-30L-Water-Tank-Window-Cleaning-Trolley-/262324204260

Cheers

Dan

Or even this? https://www.fruugo.co.uk/maxblast-16l-cleaning-water-fed-backpack-pole/p-16534005-36160690?ac=redbrain_css&gclid=EAIaIQobChMI1YTvp_am3gIVgqQYCh2M1wMrEAQYAiABEgL5N_D_BwE

Any battery powered sprayer with a WFP pole and brush will do walls.  Roofs are a while different game and only way to do them well is to get up close and personal.