Water fed brush connected to the tap - been doing it like this before they invented PURE water
Plastic sheet roofs - no need for chemicals , I find they come up like new , gutters and fancy bits I just wipe with sill cloth dipped in bucket with fairy - wet a green pad for the tough bit .
I had one customer 2 months back that wanted me to clean the white bits with CIF/JIF co's that’s what the conservatory company said to use - the outcome didn't look no different to how we do it before - yes I charged her extra for the bottle of CIF
I do 2 conservatorys with glass roofs a month ( big buggers ) the customers are pleased with the outcome ( till I lose the jobs to a PURE water fed firm
)