Origins Georgian 1714 - 1830 - Regency 1811 - 1820 - William IV 1830 - 1837 - Victorian 1836 - 1901 - Edwardian 1890 - 1914
The origins of the sash windows have been the subject of much investigation and speculation. Until recently, the general opinion tended to be that sash windows were invented in Holland in the late 17th Century. Recently, however, valuable research work undertaken by Dr Hinte Louw, of the University of Newcastle Upon Tyne, suggests that sash windows could have been invented earlier in the 17th Century in England. Another school of thought suggest that sash windows originated in France and spread to England via Holland.