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Green Roofs for Office Buildings: Benefits to Mass Transfer and Energy Efficiency

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Abstract:

This research paper shows how the use of green roofs for a building located in Romania’s climate zones II (winter) and III (summer) can reduce the energy required for heating during the winter and cooling during the summer, supporting national nZEB performance targets. Two types of green roofs – extensive and intensive – were analyzed using Ubakus to evaluate heat and mass transfer through the roof structure. Compared to conventional insulation systems, green roofs provide improved thermal resistance, better moisture regulation and additional benefits related to biodiversity and indoor environmental quality. This study highlights the importance of selecting low-thermal-conductivity substrates and suitable plant species when designing green terraces in the Oltenia Region. Comparative energy consumption results for the extensive and intensive solutions demonstrate the advantages of implementing green roofs on a large scale within the Romanian construction sector. The purpose of this research is to describe a specific green roof configuration and to emphasize its benefits in improving heat and mass transfer through the roof terrace.

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Periodical:

Advances in Science and Technology (Volume 178)

Pages:

143-154

DOI:

https://doi.org/10.4028/p-ac5T4k

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Online since:

June 2026

Authors:

Veronica Iordan*, Mădălina Călbureanu, Nicolae Mihai Marinache, Adriana Ionescu, Diana Călbureanu, Raluca Malciu

Keywords:

Extensive and Intensive Systems, Green Roofs, Heat and Mass Transfer

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© 2026 Trans Tech Publications Ltd. All Rights Reserved

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* - Corresponding Author

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