Providing I can clean the windows, and when I am done they are perfect, and I've collected the money then I'm happy.
Any weathering that then occurs is tough titty, if a customer rang me and complained that after just 4 days they are dirty again, I would politely point out that they were spotless when I had done them, and that it is the foul weather that had since got them dirty.
Circumstances totally beyond my control and so on.
And no way on earth would I go back and reclean them.
If she then said she'd cancel if it happened again, I would thank her for her custom and tell her she will have to find a new window cleaner.
Now if I have gone out in foul weather, cleaned the windows and known full well that within an hour of cleaning them (trad) or by the time they had dried out (WFP) they were all mucked up,and the customer complained (has to be within 24 hours though) then I would reclean them.
I'm sorry, but I don't like going out to clean windows knowing full well I'm wasting my time.
I don't agree with those that say clean in all weather (bills to pay, mouths to feed etc)
You don't lay bricks in the rain.
Or paint in the rain.
Or dig a garden or cut grass in the rain.
We are in a job that is at the mercy of the elements, there are times when you k now you are wasting your time.
WFP doesn't hack it in these conditions, heavy wind and rain will leave them contaminated before you have even finished the job.
Trad is little better. no way should you be working off a ladder in those conditions, and the windows will soon be mucky again.
As has been said already in this thread, we son't often get such prolonged spells of extreme weather conditions, so when it happens, - as Squeaky said in another thread - take it on the chin and enjoy your day off.
In this job it only takes a few days to earn some decent money, so why panic?
But if you do work in conditions that are bad, then you can't blame customers for complaining, I sure as hell would!
I come home from work and find a bill for window cleaning and the windows are as dirty as they were before the windows were cleaned?
No way would I be happy about paying out
Sometimes it is unavoidable, a sunny, dry morning, and then in the afternoon the weather turns on you, in that case it is an instance of circumstances beyond your control.
Just as those occasions when we get the 'sahara rain'

I've gone collecting the day after that has happened and the windows are bloody filthy!

I feel guilty collecting the money for it, but the customers understand.
They are not so understanding if you are working in gale dorce winds and driving rain!!
Ian