ABSTRACT
This chapter explains the development and present use of windows, doors and stairs. Collectively these components are called joinery, and are intended to make the house habitable, rather than being an integral part of the structure of the building. Traditionally joinery was made from solid timber – both hard and softwood. Early windows were usually fixed lights or side-hung casements. In the late 17th century, sash windows were introduced to Britain. A ‘sash’ window generally refers to a vertically sliding double-hung window. Glass, in the thickness used in windows, typically 4mm, is a good conductor of heat. Doors are one of the most used moveable parts in buildings and require to be both durable and maintainable whatever their specific purpose might be. The main material for doors in houses is still timber, although steel and plastic doors are becoming increasingly popular for external doors. Modern staircases are usually made from a combination of softwood, plywood and, increasingly, medium density fibreboard.
