I had a long day today - started at 3 am with washing the ground floor of this Chemist shop on Bathurst St in Sydney CBD. Like most of a city this street is very busy and only gets quiter for few hours before sunrise. So usually we wash fasades between 3am and 6am midweek.
City buildings get filthy quickly. We do a regular washing for a number of city buildings, ussually every 2-6 months.