Sound insulation of lightweight extensive green roofs

Galbrun, Laurent; Scerri, Léa

doi:10.1016/j.buildenv.2017.02.008

Cited by 35 publications

(16 citation statements)

References 18 publications

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“…Since roof finishing materials of non-vegetated roofs are most often rigid, there is a large potential to attenuate sound waves diffracting over the outer skin of the building and to enhance quiet facades, e.g., in road traffic applications. Due to their relatively large surface mass density, low stiffness and pronounced damping properties, green roofs increase the acoustic insulation on top of the basic roof [83]. Especially their performance in the low-frequency range could be interesting.…”

Section: Green Roof Vs Conventional/traditional Roofsmentioning

confidence: 99%

Green Roof Design: State of the Art on Technology and Materials

Cascone

2019

Sustainability

163

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In order to consider green roofs as an environmentally friendly technology, the selection of efficient and sustainable components is extremely important. Previous review papers have mainly focused on the performance and advantages of green roofs. The objective of this paper is to examine the primary layers: The waterproof and anti-root membranes; the protection, filter, and drainage layers; the substrate; and the vegetation. First, the history, modern applications, benefits and classification are analyzed in order to present a well-defined state of the art of this technology. Then, the roles, requirements, characteristics, and materials are assessed for each green roof layers. This technology was compared to a conventional roof technology, Mediterranean climate conditions and their influence on green roof design were assessed, also comparing them with Tropical area and focusing on irrigation systems, examples about the commercial materials and products available in the market were provided and innovative materials coming from recycled sources were analyzed. Future research should evaluate new materials for green roof technologies, in order to enhance their performance and increase their sustainability. The information provided in this review paper will be useful to develop Mediterranean green roof guidelines for selecting suitable components and materials during the design and installation phases.

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Section: Green Roof Vs Conventional/traditional Roofsmentioning

confidence: 99%

Green Roof Design: State of the Art on Technology and Materials

Cascone

2019

Sustainability

163

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“…Some practical implications for firefighters are also considered. In Galbrun and Scerri [111], green roof samples are tested in an acoustic laboratory. Generally good sound insulation properties are documented, depending on the features of the roof.…”

Section: Othersmentioning

confidence: 99%

Performance of Blue-Green Roofs in Cold Climates: A Scoping Review

et al. 2018

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Green and blue-green roofs are emerging as an increasingly popular feature of rooftops, particularly in urban areas. Particular problematic conditions render their usage complex in the Nordic countries. In order to ensure that green roofs are built durable and with the service life expected of them, it is important to know all the relevant factors surrounding their construction and operation. A scoping study was conducted in order to gain an overview on green roof research and available scientific literature. One hundred articles of particular interest for Nordic climates were retrieved and their findings summarized. It is found that the vast majority of green roof research has been conducted on a theoretical basis, or with practical measurements on green roof test beds or isolated components. There is scarcely any literature on the operation of full-scale, building-implemented green roofs, and no articles were found on the building technical performance of aged green roofs. These knowledge gaps indicate a major risk factor in green roof operation, as their performance and integrity over time has not been documented. This despite the fact that green roofs have been implemented and in operation worldwide for decades.

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“…The extension of the vegetal carpet from the ground level to the roof of the buildings was imposed not only as a solution for increasing green areas in these extensive build and polluted environments, but also as a manner to insulate and cool the buildings (Galbrun and Scerri, 2017;Cao et al, 2019). Long-term sustainability of rooftop plantations is based on a rigorous selection of species, considering not only the plants survival in hard microclimate (shallow soils, modest water, constant wind, extreme temperatures), but also the 319 increase of biodiversity, aesthetic of the plantations and benefits for human health (Snodgrass and Snodgrass, 2006;Butler et al, 2012;Whittinghill and Rowe, 2012;Arabi et al, 2015;Eksi et al, 2017;Bădărau, 2018).…”

Section: Introductionmentioning

confidence: 99%

Leaves anatomical and physiological adaptations of Vinca major ‘Variegata’ and Hedera helix L. to specific roof garden conditions

Petra¹,

Georgescu²,

Toma³

et al. 2020

Not Bot Horti Agrobo

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Urban agglomerations create extreme microclimates for plants, in which growth, development and survival means adaptation. Plantations expansions beyond the typical gardens to buildings, walls or other build structures were realized in many cities with a rigorous selection of plant species. Although the number of woody species well adapted to the urban environmental conditions is quite large, few species manage to grow and develop on the roofs. Two species - Vinca major ‘Variegata’ and Hedera helix, regularly used for this type of plantations in Bucharest, were selected to understand their mechanism of adaptation. A comparative study was conducted on these species, growing on a rooftop garden and at the ground level into a typical garden. Both species revealed considerable anatomical differences of the leaves. In addition, physiological determinations revealed a stronger intensity of photosynthesis, an intense transpiration and a lower respiration rate at plants grown in the roof garden.

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Sound insulation of lightweight extensive green roofs

Cited by 35 publications

References 18 publications

Green Roof Design: State of the Art on Technology and Materials

Green Roof Design: State of the Art on Technology and Materials

Performance of Blue-Green Roofs in Cold Climates: A Scoping Review

Leaves anatomical and physiological adaptations of Vinca major ‘Variegata’ and Hedera helix L. to specific roof garden conditions

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