Retrofitting historical buildings with innovative techniques: Double-skin façade and skylights for courtyard buildings

¹ Università degli Studi di Napoli Federico II, Department of Industrial Engineering (DII), Italy
² Università degli Studi di Napoli Federico II, M. Sc. Engineer, freelance, Italy
³ Università degli Studi di Napoli Federico II, Department of Architecture (DIARC), Italy

^* Corresponding author: giuseppe.aruta2@unina.it

Abstract

Historical buildings hold significant cultural values but often face challenges in meeting modern sustainability and functionality standards. The aim of this study is to enhance the energy efficiency, occupant comfort and resilience of the heritage stock while preserving its historical significance, by assessing the application of innovative retrofitting techniques, such as double-skin façades and wide skylights for the courtyards’ covering. The first part delves into the concept of retrofitting and the importance of preserving historical architecture, especially in Italy, whose historical centers represent a unique example to be preserved and prepared for future sustainability challenges. The second part focuses on the use of double-skin façades and glazed covers for courtyards, in the retrofitting process, to study the influence that they have on the whole building. It discusses how these techniques can be adapted to suit the unique characteristics of courtyard buildings, balancing modern needs with heritage conservation. A repeatable case study is examined to showcase the successful implementation of these techniques in historical courtyard buildings and to illustrate the practicality of retrofitting solutions while respecting the historical context and architectural integrity of the structures. This research seeks to encourage architects, preservationists, and stakeholders to embrace these innovative techniques for the revitalization of our architectural heritage.