green roofing Articles

  • Nutrient leaching from extensive green roofs with different substrate compositions: a laboratory study

    To investigate nutrient leaching from extensive green roofs, green roof platforms were established to investigate the effluent quantity and quality during artificial rainfall. When the influent volume reached three times the empty bed volume, for which the cumulative rainfall was around 300 mm, the effluent TP and COD concentrations of green roof platforms filled with peat soil did not tend to ...


    By IWA Publishing

  • Green Roof

    A green roof, or rooftop garden, is a vegetative layer grown on a rooftop (USEPA, 2010a).  The main tasks of a green roof are retention of rainwater and increasing of evaporation. It can be distinguished between intensive and extensive green roofs. Extensive green roofs have thin layer of soil, the plants are draught tolerant and they require little maintenance. Intensive green roofs have a ...


    By IWA Publishing

  • Compost Plays Key Role in Green Roof Mixes

    Untitled Document ...


    By BioCycle Magazine

  • Green Roofs are Growing

    Standards from ASTM International Committee E60 on Sustainability guide work on vegetative green roofs. Walking south along Michigan Ave. from the Chicago River, a first-time visitor might take in the green vistas of Millenium Park sprawling eastward toward the great lake with no hint that the park itself is a green roof. It covers ...


    By ASTM International

  • Green roof hydrologic performance and modeling: a review

    Green roofs reduce runoff from impervious surfaces in urban development. This paper reviews the technical literature on green roof hydrology. Laboratory experiments and field measurements have shown that green roofs can reduce stormwater runoff volume by 30 to 86%, reduce peak flow rate by 22 to 93% and delay the peak flow by 0 to 30 min and thereby decrease pollution, flooding and ...


    By IWA Publishing

  • Toward an operational tool to simulate green roof hydrological impact at the basin scale: a new version of the distributed rainfall–runoff model Multi-Hydro

    Currently widespread in new urban projects, green roofs have shown a positive impact on urban runoff at the building scale: decrease and slow-down of the peak discharge, and decrease of runoff volume. The present work aims to study their possible impact at the catchment scale, more compatible with stormwater management issues. For this purpose, a specific module dedicated to simulating the ...


    By IWA Publishing

  • Storm water infiltration in a monitored green roof for hydrologic restoration

    The objectives of this study are to provide detailed information about green roof performance in the Mediterranean climate (retained volume, peak flow reduction, runoff delay) and to identify a suitable modelling approach for describing the associated hydrologic response. Data collected during a 13-month monitoring campaign and a seasonal monitoring campaign (September–December 2008) at the green ...


    By IWA Publishing

  • Green roofs for life

    The planning system, at both local and national levels, is now being used to expand use of green roofs in towns and cities. This policy recognises important benefits including biodiversity, pollution and CO2 removal, thermal insulation and mass, protection of the roof covering and making our cities more attractive places. Measures are also in place requiring sustainable drainage systems (SUDS), ...


    By Latchways PLC

  • Rock case study

    ROCK, a long standing client for co2balance, talk about their commitment to put the environment at the heart of their business proposition. Rock have expanded their supply and contractual services from traditional roofing products to the provision of high tech "Green Roofs" and even "Green Wall" systems. Rock was in fact responsible for the construction of the largest Green Roof in the capital at ...


    By co2balance UK Ltd

  • Modelling of green roofs' hydrologic performance using EPA's SWMM

    Green roofs significantly affect the increase in water retention and thus the management of rain water in urban areas. In Poland, as in many other European countries, excess rainwater resulting from snowmelt and heavy rainfall contributes to the development of local flooding in urban areas. Opportunities to reduce surface runoff and reduce flood risks are among the reasons why green roofs are ...


    By IWA Publishing

  • Green Roof Media Selection for the Minimization of Pollutant Loadings in Roof Runoff

    ABSTRACTStormwater is a leading cause of water quality impairment in estuaries like the Chesapeake Bay. Green roofs are a potential best management practice for urban areas where land for traditional stormwater practices is unavailable. They are aesthetically pleasing, with excellent water retention ability. However, it is unknown how effective they are at treating stormwater. Typical media ...

  • Research and education - University of Illinois

    During the 2007-2008 academic year grants were awarded to Dr. Praveen Kumar and Dr. Art Schmidt in the Department of Civil Engineering at the University of Illinois, to implement a new data collection system on the Urbana campus. The goal of this project is the deployment of sensors to provide high-resolution, semi-realtime datasets for research and education. The resulting data is published in ...

  • Green Roofs in Buildings: Thermal and Environmental Behaviour

    Although in many countries green roofs still appear to be a novelty, they are in fact a technology that has been known for centuries. During the past decade, urban policies and building regulations in many countries worldwide have led to an increase in the popularity of this technique, mostly due to the belief that green roofs play a key role in environmental restoration in areas where city ...

  • A modelling study of the event-based retention performance of green roof under the hot-humid tropical climate in Kuching

    The influences of climate on the retention capability of green roof have been widely discussed in existing literature. However, knowledge on how the retention capability of green roof is affected by the tropical climate is limited. This paper highlights the retention performance of the green roof situated in Kuching under hot-humid tropical climatic conditions. Using the green roof water ...


    By IWA Publishing

  • Experimental analysis of green roof substrate detention characteristics

    Green roofs may make an important contribution to urban stormwater management. Rainfall-runoff models are required to evaluate green roof responses to specific rainfall inputs. The roof's hydrological response is a function of its configuration, with the substrate – or growing media – providing both retention and detention of rainfall. The objective of the research described ...


    By IWA Publishing

  • Research on the characteristics of the water quality of rainwater runoff from green roofs

    This paper investigates the water quality characteristics of rainwater runoff from dual-substrate-layer green roofs in Tianjin, China. The data were collected from four different assemblies and three types of simulated rains. The storm-water runoff quality was monitored from early June through late October 2012 and from July through late November 2013. The results revealed that the runoff water ...


    By IWA Publishing

  • A two-stage storage routing model for green roof runoff detention

    Green roofs have been adopted in urban drainage systems to control the total quantity and volumetric flow rate of runoff. Modern green roof designs are multi-layered, their main components being vegetation, substrate and, in almost all cases, a separate drainage layer. Most current hydrological models of green roofs combine the modelling of the separate layers into a single process; these models ...


    By IWA Publishing

  • A field study to evaluate the impact of different factors on the nutrient pollutant concentrations in green roof runoff

    The objectives of this study are to investigate the impact of different factors on the nutrient pollutant concentrations in green roof runoff and to provide reference data for the engineering design of dual substrate layer green roofs. The data were collected from eight different trays under three kinds of artificial rains. The results showed that except for total phosphorus, dual substrate ...


    By IWA Publishing

  • Reshingle the Right Way: 3 Reasons for Using Recycled Tire Shingles

    There is no end for uses when it comes to recycled tires. Manufacturers who specialize in green products are coming up with new uses all the time. One such product that is growing in popularity as environmental awareness increases is housing shingles made from recycled tires. These shingles are cost effective, durable and great for the environment. Cost-Effective Rubber roofing is a ...


    By ECO Green Equipment

  • Hydrological performance of dual-substrate-layer green roofs using porous inert substrates with high sorption capacities

    Given that the common medium in existing green roofs is a single layer composed of organic and inorganic substrates, seven pilot-scale dual-substrate-layer extensive green roofs (G1–G7), which include nutrition and adsorption substrate layers, were constructed in this study. The effectiveness of porous inert substrates (activated charcoal, zeolite, pumice, lava, vermiculite and expanded ...


    By IWA Publishing

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