Conservatory and gutter/facia cleaning equipment.
This is my prototype set up....Works well .Big enough to clean properly small enough to be portable and not to damage anything.
Kubota 5.5 hp petrol engined pressure washer fitted with W98 interpump and gearbox (new pistons and seals fitted). Feeds straight from customers hose or from a barrel if you wish to feed a moss killer/soap mix.
Extending pressure washer lance (approx 5m long) ... light weight but cheap and nasty aluminium lance with rotary driven brush for flat surfaces and swan neck nozzle for all the other bits.
£450 ono