# Georgian sash

Georgian sash windows are characterised by their elegant, symmetrical design and multi-pane glazing—most iconically in a six-over-six configuration (six panes in the upper sash, six in the lower).

The windows were common during the early 18th century through the beginning of the 19th century because of their fine glazing bars and slim timber frames and their counterbalanced sliding mechanism. The architects designed these structures with exact dimensions and natural illumination which creates the fundamental characteristic of London’s historic squares and terraces.

The restoration process demands authentic methods which include traditional joinery techniques and weights and cords for conservation areas but modern solutions like vacuum insulated glazing (VIG) can now be discreetly installed to enhance thermal performance without affecting aesthetics or functionality.