However, apart from being brave, window cleaners also have to undergo a lot of training.&nbsp;

Every day, before they climb terrifying heights, every piece of equipment is carefully checked so nothing snaps and results in tragedy.

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Cleaning skyscraper windows not for the faint of heart

One of the world’s riskiest jobs is cleaning the windows of skyscrapers, and window cleaners put their lives in danger regularly to earn a living.