The main objective of the COST Action C13 was to increase the knowledge of properties and possibilities of glazing in order to increase the performance of building envelopes, to reduce the energy consumption and to improve the quality of life with respect to interior space, impact on the environment and human welfare. This collection of papers presented at meetings and workshops of the COST C13 working groups 1 (Architectural Aspects and Design Integration), 2 (Quality of Interior Space) and 3 (Structural Aspects of Glass) are the result of 5 years of exchange of ideas, experiences and know-how between members, delegates and experts. It represents the body of knowledge from a restricted but representative group of professionals in Europe on the subject of glass building envelopes. The Steel Structures Laboratory at Ecole Polytechnique Federale de Lausanne (CH) and the research group 'Facades & Systems' of the Faculty of Architecture at Delft University of Technology (NL) have taken the initiative to publish these COST C13 papers in order to disseminate the knowledge to the world of glass facade professionals and to contribute to the development of a new generation of high-performance glass building envelopes.IOS Press is an international science, technical and medical publisher of high-quality books for academics, scientists, and professionals in all fields. Some of the areas we publish in: -Biomedicine -Oncology -Artificial intelligence -Databases and information systems -Maritime engineering -Nanotechnology -Geoengineering -All aspects of physics -E-governance -E-commerce -The knowledge economy -Urban studies -Arms control -Understanding and responding to terrorism -Medical informatics -Computer Sciences