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State-of-the-Art Green Roofs: Technical Performance and Certifications for Sustainable Construction

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Department of Civil and Industrial Engineering, Pontificia Universidad Javeriana Cali, Cali 760031, Colombia
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Gerencia, Dos Mundos, Cali 760050, Colombia
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Department of Mechanical Engineering, Universidad Tecnológica de Bolívar, Cartagena de Indias 130001, Colombia
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Department of Mechanical Engineering, Universidad del Norte, Barranquilla 081007, Colombia
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Engineering Faculty, Universidad De La Salle, Bogotá 111711, Colombia
*
Author to whom correspondence should be addressed.
Coatings 2020, 10(1), 69; https://doi.org/10.3390/coatings10010069
Received: 30 November 2019 / Revised: 2 January 2020 / Accepted: 4 January 2020 / Published: 13 January 2020
(This article belongs to the Special Issue Biological Coatings for Buildings)
Green roof systems, a technology which was used in major ancient buildings, are currently becoming an interesting strategy to reduce the negative impact of traditional urban development caused by ground impermeabilization. Only regarding the environmental impact, the application of these biological coatings on buildings has the potential of acting as a thermal, moisture, noise, and electromagnetic barrier. At the urban scale, they might reduce the heat island effect and sewage system load, improve runoff water and air quality, and reconstruct natural landscapes including wildlife. In spite of these significant benefits, the current design and construction methods are not completely regulated by law because there is a lack of knowledge of their technical performance. Hence, this review of the current state of the art presents a proper green roof classification based on their components and vegetation layer. Similarly, a detailed description from the key factors that control the hydraulic and thermal performance of green roofs is given. Based on these factors, an estimation of the impact of green roof systems on sustainable construction certifications is included (i.e., LEED—Leadership in Energy and Environment Design, BREEAM—Building Research Establishment Environmental Assessment Method, CASBEE—Comprehensive Assessment System for Built Environment Efficiency, BEAM—Building Environmental Assessment Method, ESGB—Evaluation Standard for Green Building). Finally, conclusions and future research challenges for the correct implementation of green roofs are addressed. View Full-Text
Keywords: green roofs; biological coatings; hydraulic performance; thermal performance; sustainable construction certification; LEED; BREEAM; CASBEE; BEAM; ESGB green roofs; biological coatings; hydraulic performance; thermal performance; sustainable construction certification; LEED; BREEAM; CASBEE; BEAM; ESGB
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Naranjo, A.; Colonia, A.; Mesa, J.; Maury, H.; Maury-Ramírez, A. State-of-the-Art Green Roofs: Technical Performance and Certifications for Sustainable Construction. Coatings 2020, 10, 69.

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