how on earth has that job taken you 17 HOURS!!

f/s/g clean and roof and windows(i dont do gutter clearing)would have taken me around 5 hours.
roof 3 hours
f/s/g 1 hour
all windows and frames(and packing up) 1 hour
i would of charged £120 for roof.£60 for f/s/g plus the normal window clean price.
why havent you cleaned the edges of the conny roof?you can clearly see their still dirty.also the plastic struts and some panels still look a bit grubby.
this is how i would of done the job
f/s/g cleaned first and windows at the front of the property.pure water only.
next id clean the same on the sides and back(upper windows/f/s/g).
then id spray the finials and panels with virosol on the awkward side of the conservatory and use ladders and stand off.plug into customers outside tap and scrub and rinse everything lots of times paying particular attentions to finials and plastic struts.
then id spray a strong mix of virosol and clean the whole front and sides of the roof ,again paying a lot of attention to everything.really scrubbing and rinsing everything loads of times with high pressure from outside tap.
then id get up the ladder and check the whole roof and give a final rinse.
on to outside gutters on conservatory then switch back to pure for cleaning the windows.then pack everything away.job done.
5 hours.£200(if the normal window clean price is say £20)