well.........
I cleaned last week in the rain probably for the first time.
The rain was just hitting the windows and no more. Later that day the it really lashed down and the wind got up.
Cheque arrived in the post along with a wee note saying.
"Thanks for cleaning our windows in such horrible weather. I do appreciate that you need to keep your income coming in, but the day after you had been our windows were filthy. Please infuture try if you can and only clean in good weather or light rain. P.S. Enclosed with the cheque is a little bonus for you! Enjoy and dont get too drunk over xmas"
£20 tip
Im glad i dont offer a rain guarantee!