Yes, even washing the windows constitutes an emergency. How many people wash their windows regularly these days? Probably a lot less than in the good old days when everyone seemed to have bunches of time available for good old fashioned housekeeping, of which window cleaning would be one very important job. But there are also good reasons why so many more people are not cleaning their windows like they used to in the old days.
For one thing, not everyone has their own freestanding houses that they can call their own. Many people have moved to the cities and are now staying in high-rise apartment blocks. It is just simply too awkward and downright dangerous for them to stretch out their arms with bucket and brush to clean across a bedroom window looking over the city from the sixth floor or higher. It is important to note that some 24 hr emergency window and door service teams will be including a 24 hr window cleaning service as well.
Window cleaning, essential as it is, a good form of basic good housekeeping, also acts as an essential form of risk management practice as well. There could be risks for the apartment dweller with well and truly grubby windows. Apart from the fact the he cannot ever see clearly through them, the window panes are also weakened from months, or more, of the accumulation of dust and debris. It builds up and forms a hard cake.
And just a gentle nudge on this window can be like popping a piece of soft cardboard out of place. Dirty windows could be an added attraction for city pigeons. Food crumbs could accumulate on the dirty windows and these birds would not mind pecking on these.