im 15 yrs trad and i do work in light rain/drizzle,sometimes in quite heavy rain!just depends if its coming straight down!/how far im behind with work and what custys im cleaning(i prefer the ones that are out!).i believe if ur running a proper business and have a full round u HAVE TO WORK IN BAD WEATHER!!its either too hot,too cold,too wet,too windy!just get out there even if its only half a day!otherwise you wont earn enough!obviously if its too bad wet AND windy then sack it for the day.some of u on here think a full day is 9am-2pm!!i try and do 9am-4pm every day in winter if possible.