Being a couple on months into window cleaning, I stumbled across something that worked well the last couple of weeks, and thought I'd pass it on to any other new starters wanting to grow their round, it all helps...
I was behind with my diary, so on a sunny Saturday morning I decided to go out and catch up (normally just work week days). And what happened was that I hadn't realised loads of people are in that are obviously normally out on a weekday, or hadn't been in when I canvassed the road. As a result I got about 5 new customers in the road who noticed me working away. When I tried it the next week, different road, got the same result.
So if you're growing your business, and normally only work week days, might be worthwhile to go out Saturday a few weeks in every month.