http://just-bloom.com/News/maintenance-of-existing-timber-sash-windows/ If you have existing timber sash windows in your home, they could be of any vintage. Sash windows started to appear in Europe in the late 17th century and became one of the most popular windows to be installed. hopefully you will be able to repair your sash windows but if your sash windows are [.] Related posts: Painting Timber Sash Windows. Fri, 18 Dec 2009 12:00:12 CST en