Abstract
The need to enhance the performance of building façades and mitigate adverse environmental impacts has promoted the hypothesis of integrating green materials towards sustainable buildings. Façade designers tend to select building materials based on their green characteristics (origin) or green performance; however, this study highlights the importance of integrating both into the decision process. The main objective is to develop a new assessment process for selecting green building façade materials based on green performance and green originality. Furthermore, the evaluation framework considers four green building rating systems as a reference to allocate credits for the relevant criteria. Applying the proposed criteria in this study helps maximize the points for accreditation when incorporating green building materials in building façades. Moreover, the Analytic Hierarchy Process (AHP) is used to assign the proposed criteria’s weighting importance based on the four rating systems’ average points. After that, performing sensitivity analysis to identify each criterion’s influence is conducted. The study concluded that involving minimum levels of adverse impacts is the preferable criteria regarding the green origin concept. As for the green performance, promoting the performance of indoor air quality is the most favorable selection criteria.
Highlights
Building materials significantly affect the depletion of natural resources and their impact on buildings’ emissions and energy usage [1]
This paper aims to assess green materials for building façades according to sustainability measures and considering their green origin and green performance
Based on the study of materials-related categories in four green building rating systems, in addition to results obtained from previous studies, five main criteria can be defined to assess both the origin and performance of façade green building materials (Table 3)
Summary
Building materials significantly affect the depletion of natural resources and their impact on buildings’ emissions and energy usage [1]. Green architecture focuses on the relationship between the building and nature, minimizing environmental impacts, health hazards, and energy and conserving natural resources [4]. In this context, the green building concept involves using eco-friendly and low-impact materials, conserving resources and energy efficiency, and optimizing indoor health for occupants [5]. Applying insulation materials for opaque façades can decrease building envelopes’ thermal bridges and optimize the buildings’ thermal and acoustic performance [8]. Implementing sustainable building façades using green materials contributes to their impact on the environment and the thermal performance of the building
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