I'll happily work in light rain, but when it gets heavy, I don't like getting soaked and I don't enjoy it at all!
Also I think working in heavy rain doesn't send the right message to my customers. We all know that heavy rain can bring down the muck from the roof and the gutters and could cause problems.
I earn enough money that I don't have to work in heavy rain and with a bit of careful planning, I rarely get problems.
That's the best bit about this job, we can all decide how we want to play it. For instance, i'll happily work a Saturday morning. Mrs window cleaner likes to do all the food shopping on a Saturday morning...and I don't!