My outfit for cold calling - collar and tie, thin sweater. trousers not jeans, shoes not trainers. Smart enough but not OTT! No ciggy's if you smoke! Relaxed, open friendly stance.
Best times Sat 10am to lunchtime - any teatime 4pm - 7pm except Sunday
Not when it's belting down - you just look desperate!
Opening line: (Smile)
"Hello there, I'm (First and last name), the local window cleaner, I clean your neighbours windows (gesture to relevant houses) hope I've called at a convenient time - I've got one or two spaces available on my round - have you got a reliable window cleaner?"