£50-£60 an hour for add ons whether its f/s/g,conny roof cleaning or solar panels.(i know roughly how long theyll take me to clean).
Totally agree with this, even if your in an area where you have no chance of getting this price then your better off without as you don't want to be doing this type of work for anything less.
not sure i quite agree with that, yes if your flat out busy and havent got the time you want to make it worth your while going out of your way doing extras, maybe working late or on a weekend it makes sense.
but if you have the time then dont see why you cant do it at "window rate" whatever that is for you...
If you can get 50-60 ph then by all means but i would seriously struggle to get £120 to clean a conny (2 hours work)