Sash Windows

By far the most widespread window type in Britain, ever since the 17th Century, the sash window remains a symbol of British architecture and traditional building styles. They are particularly representative for Victorian and Georgian architectural design and still appreciated as a considerable addition to the value of a property. Generally, sash windows encompass one or more movable glass panels and are operated with the aid of a pulley and chord system.


The single-hung sash window. Their earliest prototype encompassed a single moving sash positioned inside a wooden frame, below or above a immobile one. The pulley and chord mechanism was aided by the use of metallic weights in order to obtain optimal balance. This type is not so common nowadays but can still be seen in many historic buildings.

The double-hung sash window. The most prevalent type of window in the country, it is composed of two mobile sashes which overlap. Today, double-hung sash windows tend to use a modern spring system instead of a weight box, although the latter is preferred by some due to its old-fashioned appeal.

The horizontal sliding/ Yorkshire sash window. More prevalent in the Yorkshire area, which explains its alternative name, this type of window comprises two overlapping sashes which move horizontally. It is also common in other European countries, as it is deemed convenient and easy to operate.

Sash Window Restoration

Original sash windows currently face a number of problems (if not correctly maintained) due to the natural deterioration processes suffered as a result of usage and exposure to the elements. Problems include wood decay, swelling, paint damage, broken cords and imbalanced weights. Nonetheless, an increasing number of owners realise their value and potential and decide to recondition them as opposed to replacing them altogether. Repairing techniques include epoxy resin repairs, replacement timber members, re-glazing and repainting.