Vlad Tudor DOBRA


The main purpose of this paper is to present a review of the energetic influences of green roofs on buildings. The direct energetic influences of green roofs on buildings are related to the influences on the air temperature inside and outside of the building, the roof surface temperature, the heat flux transferred into the building through the roof, the albedo value of the roof. Indirect energetic influences are related to the costs with the heating and cooling. This paper indicates that the influences on the parameters presented above are dependent on the type of the green roof used. In literature, green roofs are considered to be a passive cooling method rather then a thermal insulation method.

Full Text:



Oberndorfer, E., Lundholm, J., Bass, B., Coffman, R., Doshi, H., Dunnett, N., et al., Green roofs as urban ecosystems: ecological structures, functions, and services, Bioscience 57 (10), pp. 823–833, 2007

Dvorak, B., Volder, A., Green roof vegetation for North American ecoregions: A literature review, Landscape and Urban Planning 96, pp. 197–213, 2010

Alexandri, E., Jones, P, Developing a one-dimensional heat and mass transfer algorithm for describing the effect of green roofs on the built environment: Comparison with experimental results, Building and Environment 42, pp. 2835–2849, 2007

Alexandri, E., Jones, P., Temperature decreases in an urban canyon due to green walls and green roofs in diverse climates, Building and Environment 43, pp. 480–493, 2008

Lazzarin, R.M. Castellotti, F., Busato, F., Experimental measurements and numerical modelling of a green roof, Energy and Buildings 37, pp. 1260–1267, 2005

Castleton, H.F., Stovin, V., Beck, S.B.M., Davison, J.B., Green roofs; building energy savings and the potential for retrofit, Energy and Buildings 42, pp. 1582–1591, 2010)

Susca, T., Gaffin, S.R., Dell’Osso, G.R., Positive effects of vegetation: Urban heat island and green roofs, Environmental Pollution, xxx, pp. 1-8, 2011

MacIvor, J. S., Lundholm, J., Performance evaluation of native plants suited to extensive green roof conditions in a maritime climate, Ecological Engineering 37, pp. 407–417, 2011

Wong, N. H., Chen, Y., Ong, C. L., & Sia, A., Investigation of thermal benefits of rooftop garden in the tropical environment., Building and Environment, 38(2), pp. 261-270, 2003

Santamouris, M., Pavlou, C., Doukas, P., Mihalakakou, G., Synnefa, A., Hatzibiros, A., Patargias, P., Investigating and analysing the energy and environmental performance of an experimental green roof system installed in a nursery school building in Athens, Greece, Energy 32, pp. 1781–1788, 2007

Berndtsson, J.C., Emilsson, T., Bengtsson, L., The influence of extensive vegetated roofs on runoff water quality, Science of the Total Environment 355, pp. 48– 63, 2006

Ray, S. D., Energy saving potential of various technologies, Massachusetts Institute of Technology, pp. 1 – 168, 2010

LUI, S.T.E., Life Cycle Assessment of Green Roof Systems in Hong Kong, The University of Hong Kong, pp. 1-107, 2008

Tsang, S.W., Jim ,C.Y., Theoretical evaluation of thermal and energy performance of tropical green roofs, Energy 36, pp. 3590-3598, 2011

Onishi, A., Cao, X., Ito, T., Shi, F., Imura, H., Evaluating the potential for urban heat-island mitigation by greening parking lots, Urban Forestry & Urban Greening 9, pp. 323–332, 2010

Niachou, A., Papakonstantinou, K., Santamouris, M., Tsangrassoulis, A., Mihalakakou, G., Analysis of the green roof thermal properties and investigation of its energy performance, Energy and Buildings 33, pp. 719-729, 2001

Rajasekar, U., Wen, Q., Urban heat island monitoring and analysis using a non-parametric model: A case study of Indianapolis, ISPRS Journal of Photogrammetry and Remote Sensing 64, pp. 86-96, 2009

Getter, K.L., Rowe, D. B., The Role of Extensive Green Roofs in Sustainable Development, HORTSCIENCE 41(5), pp. 1276–1285. 2006

Krauter, S., Araújo, R.G., Schroer, S., Hanitsch, R., Salhi, M.J., Triebel, C., Lemoine, R., Combined photovoltaic and solar thermal systems for facade integration and building insulation, Solar Energy Vol. 67, Nos. 4–6, pp. 239–248, 1999

Bowler, D.E., Buyung-Ali, L., Knight, T.M., Pullin, A.S., Urban greening to cool towns and cities: A systematic review of the empirical evidence, Landscape and Urban Planning 97, pp 147–155, 2010

Kumar, R., Kaushik, S.C., Performance evaluation of green roof and shading for thermal protection of buildings, Building and Environment 40 (2005) 1505–1511

Ahmad, I., Performance of antisolar insulated roof system, Renewable Energy 35, pp. 36–41, 2010

Porsche, U., Köhler, M., Life cycle costs of green roofs - a comparison of Germany, USA, and Brazil, RIO 3, World Climate & Energy Event, pp. 461 - 467, 1-5 December 2003, Rio de Janeiro, Brazil

Bin Ahmed, H. Rashid, R. Thermal Performance of Rooftop Greenery system in Tropical Climate of Malaysia, Vol 37 (1), pp. 391 – 408, 2009

Fioretti, R., Palla, A., Lanza, L.G., Principi, P., Green roof energy and water related performance in the Mediterranean climate, Building and Environment 45, pp. 1890-1904, 2010

Rowe, D.B., Green roofs as a means of pollution abatement, Environmental Pollution 159, pp. 2100 – 2110, 2011

Lanham, J. K., Thermal Performance of Green Roofs in Cold Climates, Queen’s University Kingston, Ontario, Canada, pp 1 – 190, 2007

Kosareo, L.M., The thermal performance and life cycle assessment of a green roof in Pittsburgh, Pennsylvania, University of Pittsburg, pp. 1 – 163, 2007

Liu, K.; Baskaran, B., Thermal performance of green roofs through field evaluation, Proceedings for the First North American Green Roof Infrastructure Conference, Awards and Trade Show, Chicago, IL., May 29-30, pp. 1-10, 2003

Pearlmutter, D., Rosenfeld, S., Performance analysis of a simple roof cooling system with irrigated soil and two shading alternatives, Energy and Buildings 40, pp. 855–864, 2008

Parizotto, S., Lamberts, R., Investigation of green roof thermal performance in temperate climate: A case study of an experimental building in Florianópolis city, Southern Brazil, Energy and Buildings xxx, pp. 1712–1722, 2011

http://www.answers.com/topic/solar-radiation-2 (12.10.2012)

Takebayashi, H., Moriyama, M., Surface heat budget on green roof and high reflection roof for mitigation of urban heat island, Building and Environment 42, pp. 2971–2979, 2007

MacIvor, J. S., Lundholm, J., Performance evaluation of native plants suited to extensive green roof conditions in a maritime climate, Ecological Engineering 37, pp. 407–417, 2011

Simmons, M.T., Gardiner, B., Windhager, S., Tinsley, J., Green roofs are not created equal: the hydrologic and thermal performance of six different extensive green roofs and reflective and non-reflective roofs in a sub-tropical climate, Urban Ecosyst 11, pp. 339–348, 2008

Chang N-B, Rivera BJ, Wanielista MP, Optimal Design for Water Conservation and Energy Savings Using Green Roofs in a Green Building under Mixed Uncertainties, Journal of Cleaner Production, pp. 1 – 31, 2011

Spala, A., Bagiorgas, H.S., Assimakopoulos, M.N., Kalavrouziotis, J., Matthopoulos, D., Mihalakakou, G., On the green roof system. Selection, state of the art and energy potential investigation of a system installed in an office building in Athens, Greece, Renewable Energy 33 (2008) 173–177


  • There are currently no refbacks.