The scientific literature lacks comprehensive and updated information regarding the airtightness of building components, this hindering the development and improvement of models for a robust prediction of their performance. To fill this gap, this paper presents a meta-analysis conducted on literature studies reporting laboratory and in-situ measurements of airtightness for various building components. Meta-analysis is a powerful methodological tool to compare and combine data from previous research, even when they have inherent differences. The results of the meta-analysis allowed to attain three outcomes: a classification of building components related to their airtightness performance; the update and improvement of existing databases of building component airtightness; and, the identification of factors specifically influencing airtightness performances of windows. In addition, the critical appraisal of the findings led to the definition of the requirements for future studies reporting measurements of airtightness of building components. This study offers a step ahead from existing knowledge by improving existing databases and by proposing a methodological framework of analysis that can be extended to several other domains of the built environment.

科学文献缺乏有关建筑构件气密性的全面和最新信息，这阻碍了模型的开发和改进，无法可靠地预测其性能。为了填补这一空白，本文提供了对文献研究进行的荟萃分析，报告了实验室和各种建筑组件的气密性的现场测量。荟萃分析是一种强大的方法论工具，可以比较和合并先前研究中的数据，即使它们存在固有差异。荟萃分析的结果可以实现三个结果：与气密性相关的建筑构件的分类；更新和改进现有的建筑构件气密性数据库；和，确定专门影响窗户气密性能的因素。另外，对结果的严格评估导致对未来研究报告建筑构件气密性测量的要求进行了定义。这项研究通过改进现有数据库并提出了可扩展到构建环境的其他多个领域的分析方法框架，从现有知识向前迈出了一步。