Is greening the building envelope economically sustainable? An analysis to evaluate the advantages of economy of scope of vertical greening systems and green roofs

Perini, Katia; Rosasco, Paolo

doi:10.1016/j.ufug.2016.08.002

Cited by 70 publications

(35 citation statements)

References 36 publications

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“…These costs also include those related to the preparation of the construction site (e.g., scaffolding). The cost of a traditional flat roof varies from 80 to 100 €/m 2 depending on the type of roof covering and insulation layer, while a green roof range from 139 (extensive) to 249 €/m 2 (intensive) [7].…”

Section: Installation Costsmentioning

confidence: 99%

“…For the intensive or semi-intensive type, maintenance can have more frequent infra-annual intervals (four-monthly) and also plant pruning and treatment against pests, replacement of plants, and maintenance of irrigation systems (replacement of about 10% of PVC pipes per year, as well as irrigation water). The annual unitary cost for extensive green roof maintenance is approximately 2.0 €/m 2 per year, while an intensive or semi-intensive green roof is approximately 7.0 €/m 2 per year [7]. At the end of the life-span the disposal cost of the roof (demolition, landfill etc.)…”

Section: Maintenance Costsmentioning

confidence: 99%

“…At the end of the life-span the disposal cost of the roof (demolition, landfill etc.) must be considered; for a traditional roof it is about 25-35 €/m 2 , while for a green roof it can vary from 38 €/m 2 (extensive green roof) to 48 €/m 2 (for intensive green roof) [7].…”

Section: Maintenance Costsmentioning

confidence: 99%

“…Rosato et al [4,5] studied the technological and economic features of the systems. Other authors [6,7] have shown that the most relevant benefit influencing the economic and environmental sustainability of green roofs is energy saving. Coma et al [8] demonstrated that the passive cooling capacity of green roofs is able to reduce heating and cooling demands.…”

Section: Introductionmentioning

confidence: 99%

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Selection of (Green) Roof Systems: A Sustainability-Based Multi-Criteria Analysis

Rosasco

Perini

2019

Buildings

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A wide diffusion of green envelopes in cities can be an opportunity to improve urban environment conditions and reduce negative effects of climate change. The green roof system is a widespread solution adopted all over the world due to the relative simplicity of installation and the large private and social benefits provided. Despite this, some factors hinder the diffusion of the green roof system, not only economic factors (due to the higher installation costs compare to a traditional roof solution), but also technical factors connected to lack of knowledge. The present paper investigates the factors influencing designers in the choice of a building roof systems, comparing a traditional solution and a greening system. The involvement of architects, engineers, and researchers allows the selection of the most important factors. Results of the study identifies their priority, and through a sustainability-based multicriteria analysis, the role played by each one in the decision process. This approach provides interesting hints to identify effective strategies to support a wider diffusion of greening systems for urban resilience.

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Section: Installation Costsmentioning

confidence: 99%

Section: Maintenance Costsmentioning

confidence: 99%

Section: Maintenance Costsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Selection of (Green) Roof Systems: A Sustainability-Based Multi-Criteria Analysis

Rosasco

Perini

2019

Buildings

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“…A vegetação é uma estratégia de relevância na prática da arquitetura bioclimática, por proporcionar melhoria do conforto térmico e, consequentemente, economia de energia. As envoltórias vegetadas (verdes), que podem ser coberturas, paredes ou fachadas verdes (PERINI; ROSASCO, 2016), são instalações que podem tornar a vegetação parte integrante da edificação e de seus sistemas, proporcionando benefícios como o resfriamento passivo.…”

Section: Introductionunclassified

Comportamento térmico de ambientes internos sob a influência de envoltórias verdes

Montanari

Labaki

2018

PARC Pesq. em Arquit. e Constr.

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ResumoAs envoltórias verdes são um meio de tornar a vegetação parte integrante da edificação e de seus sistemas, tais como o de resfriamento passivo. No entanto, as dinâmicas que sustentam o bom desempenho térmico destas envoltórias dependem de diversas variáveis. O objetivo deste artigo foi identificar, através de revisão sistemática da literatura recente sobre o tema, o comportamento térmico de ambientes construídos internos sob a influência das envoltórias verdes e verificar quais são as possíveis variáveis de desempenho térmico, conforme suas características. Os trabalhos analisados mostram que a redução de temperatura do ambiente interno é significativa, sendo mais acentuada no caso de paredes verdes. O desempenho térmico das envoltórias verdes depende de variáveis como o tipo de vegetação, densidade de folhagem, composição do substrato, etc., destacando as características climáticas, apesar da maioria das pesquisas focar em resultados de outras variáveis. Foi possível, também, verificar pontos frágeis do conhecimento atual, como as lacunas a respeito do peso da umidade do substrato no resfriamento de coberturas verdes e da falta de estudos que comparem o desempenho de coberturas verdes com coberturas de telhas cerâmicas ou de fibrocimento. A análise das variáveis identificou que estas exercem entre si relações multifacetadas, o que tornou evidente que determinar hierarquias entre estas não é possível e nem prudente. A análise da coerência entre as variáveis é mais importante do que a determinação de hierarquia entre as mesmas, bem como esta ação deve preceder a definição das características de uma determinada envoltória verde a ser implantada em dado lugar.Palavras-chave: Cobertura verde. Parede verde. Fachada verde. Comportamento térmico. Variáveis de desempenho. AbstractGreen envelopes are a means for vegetation to become an integral part of the building and its systems such as the passive cooling. However, the dynamics that sustain a good thermal performance of these envelopes depend on many variables. This article aimed to identify, through the systematic review of recent literature about the topic, the thermal behavior of internal built environments under the influence of green envelopes and which are the possible performance variables according to its features. The analyzed papers show that the temperature reduction of indoor spaces is significant, being more pronounced in the case of green walls. The thermal performance of green envelopes depends on variables such as the vegetation type, leaf density, substrate's composition, etc., highlighting the climatic features despite the fact that most studies focus on results from other variables. It was also possible to verify weak spots of the current knowledge, like the gaps regarding the weight of the substrate's humidity in green roofs' cooling and the lack of investigations that compare the green roof's performance with ceramic tile or fibro cement roofs. The analysis of the variables identified that these exert multifaceted relations between themselves...

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Bioactive Façade System Symbiosis as a Key for Eco-Beneficial Building Element

Öncel

2019

Green Energy and Technology

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Is greening the building envelope economically sustainable? An analysis to evaluate the advantages of economy of scope of vertical greening systems and green roofs

Cited by 70 publications

References 36 publications

Selection of (Green) Roof Systems: A Sustainability-Based Multi-Criteria Analysis

Selection of (Green) Roof Systems: A Sustainability-Based Multi-Criteria Analysis

Comportamento térmico de ambientes internos sob a influência de envoltórias verdes

Bioactive Façade System Symbiosis as a Key for Eco-Beneficial Building Element

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