The Origins Of The Sash Window Are Unwritten
The origins of the sash window are murky with the earliest references coming from the late Seventeenth Century. For example, ‘The Milkmaid’, a painting by Vermeer from 1658 shows a sash window in the background. Recent research indicates that, they may have been invented in England by Robert Hooke, and used for the first time in Ham House in the late 1600’s. Other researchers believe that they were first used in France and then travelled via Holland to Britain. The British used it so prolifically that it is seen now as purely British.