This is a companion volume to "Internal Components". Together, they present a thorough treatment of the performance requirements of components for buildings and the effectiveness of typical solutions. Topics covered include: prefabricated building components, external glazing, structural glazing, windows, external doors, rooflights and patent glazing, roofings. Both books take a practical approach through use of case studies and encourage the evaluation of alternative methods of putting components together. The content interconnects logically with the theoretical aspects explored in other titles in the series eg "Materials" and "Finishes". Up-to-date references to specialist suppliers, British Standards and the National Building Regulations are provided. The books are aimed at BTEC HNC/D building and civil engineering studies, building services engineering and at degree courses in building and architecture. They are also suitable for BTEC NC/D building studies and construction.