Mace Ltd obtains down-to-earth answers from i-Clean Systems – about the cleaning of 5,500 triple-glazed windows in Europe’s highest building ‘The Shard of Glass’, in the London Bridge area, will be a 310 metres high ‘vertical city’ comprising 28 storeys of office space, 12 floors of residences, 6 mid-levels of public space, and 18 storeys for the Shangri-La’s flagship European hotel. The project contractor Mace Ltd, and its professional partners, needed to know which design would allow the cleaning of the thousands of windows, set in a sloping façade, in the safest and most efficient way, and with the minimum intrusion for occupiers. “There were technical challenges in abundance,” comments Roger Beswick, Mace Ltd’s project manager for the external envelope of the building. “The i-C

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