The window has a long and fascinating history. It has evolved in response to the availability of resources, developments in design and technology, and the demands of those who use them. At once functional and aesthetic, the window must keep out the weather, provide ventilation, prevent intruders and buffer sound. Windows are also integral to the appearance of buildings, reflecting the practice and taste of particular regions or periods. The window cannot be seen in isolation from the building fabric in which it is set.This book presents, for the first time, a comprehensive treatment of the history and conservation of windows. Bringing together the practical experience of conservation practitioners with the knowledge of leading historians in the field, it offers a unique understanding of the window structure.Part 1 covers the history of the window including the development in glass technology. It also provides an illustrated glossary of window types.Part 2 reviews the changes in policy and legislation and discusses structural issues, decay mechanisms and the current stringent performance standards and how they affect historic windows.Part 3 focuses on the materials used in the construction of windows and the craft of leaded glazing. It details the appropriate techniques for repair and conservation."Windows" is fully illustrated in both colour and mono to include over 400 high quality illustrations.