Period Sash Windows
Throughout the ages, sash windows have been designed and manufactured in different ways, but there are some key features that each era is known for. At Timbawood, as experts in preserving Britain’s architectural heritage, we specialise in repairing and replacing period windows and doors – including Edwardian, Victorian sash windows and Georgian sash windows – to their original design and specification.
While designs became more varied later in the era, Georgian sash windows and buildings are marked by their uniformity and classic, understated details.
The proportions of Georgian sash windows are typically based on squares, both in terms of the shape of the windows and the spacing between windows and floors (see above).
It wasn’t possible to manufacture large panes of glass so windows were typically made of several smaller panes in a grid of solid timber glazing bars. In keeping with the understated elegance of the buildings, glazing bars and frames were thinner than they would become in the Victorian era.
From the 1740s, Gothic Revival architecture started to emerge and became more popular from the 1820s, typified by arched sash windows and casement windows, and more decoration. Windows were often filled with delicate arched glazing bars and leaded lights (see below).
Victorian Sash Windows (1837 – 1901)
From the 1840s, neoclassical architecture remained popular for Victorian sash windows, but a greater variety of styles emerged and the Gothic Revival continued to gain popularity.
While Georgian architects prized uniformity and regularity, the Victorian architect started to favour individuality, with a new emphasis on the picturesque and irregular. From the 1850s large bay windows, often of two or three
storeys with decorative surrounds, became a key feature of the facades of many Victorian homes.
Sash windows continued to be a popular feature of Victorian housing but because of the production of larger sheets of glass, large individual panes emerged with fewer glazing bars. An entire sash could be filled with one sheet of glass. Frames were typically thicker and manufactured with full mortise and tenon joints that featured horns.