The HMS Window Cleaner has been launched on the Calder to clean the panes of the Hepworth Gallery
Clarity and transparency are buzzwords nowadays, and honour for those who guarantee both in everyday life is overdue. Events last week at the Hepworth gallery, which opens in Wakefield in mid-May as a showcase for the Yorkshire sculptor and a new civic art gallery combined, provide an excuse. The riverside position of David Chipperfield's building means that land-based teams are not practicable: dangling from the multi-angled roofs would risk a dip. HMS Window Cleaner has thus been launched on the Calder, bobbing below the weir as her crew squeegee above. Their voyage is understandably a spectator sport, as window cleaning increasingly is, especially in cities. Cradles high on tower blocks are as awesome in their way as climbers on rock faces, from Yosemite's El Capitan to Kilnsey Crag. The teams on the wavy glass that encases the Guardian's own Kings Place building work like synchronised swimmers with their sweeping, soap-and-rinsing arcs. A modest new market for telescopic poles and other cunning gadgets has been created by houses whose basement areas, converted into separate flats, are no longer accessible for footing ladders. Arrangements on London's Shard are going to be well worth the wait. All this is welcome attention for a brave and skilled craft and also a satisfying complement to George Formby's twinky-twanky ukulele song. In his day it was what the window cleaner saw indoors that could be intriguing. Now the action outside promises just as much.