Innovative green roof with high water retention and durability

Thomas Cornelius*, Guangli Du, David John Duffus

*Corresponding author for this work

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review


Given the rapid increase in urban populations, combined with the effects of climate change, cities are struggling to provide green spaces to address liveability as well as adaptability to new challenges. Water retention and bio-diversity are the main advantages of green roofs. There are, however, limitations to green roofs that impede their acceptance and proliferation. There is for example uncertainty on how much water they retain during major storm events. In terms of building technology, green roofs today aren’t robust, and the risk for leakage through the roof membrane is disproportionally high when compared to the cost. A newly developed innovative green roof system with high water retention capacity and high durability will be presented. The patented prefabricated technology incorporate insulation and membrane into a single concrete element, ensuring improved robustness, quickened building times and a long term durable product. Initial indications for pricing indicate that the system is price-neutral when compared with green roofs as they are built today. The optimized structural performance obtain same loadbearing capacity, as existing systems, in spite of the relatively increased space created for water reservoir, without compromising the insulation capacity, hence the new green roof system further contribute to increased sustainability.
Original languageEnglish
Title of host publicationIABSE Symposium, Guimaraes 2019 : Towards a Resilient Built Environment Risk and Asset Management
Number of pages5
PublisherInternational Association for Bridge and Structural Engineering
Publication date1 Jan 2019
ISBN (Electronic)9783857481635
Publication statusPublished - 1 Jan 2019
EventIABSE Symposium 2019 Guimaraes: Towards a Resilient Built Environment - Risk and Asset Management - Guimaraes, Portugal
Duration: 27 Mar 201929 Mar 2019


ConferenceIABSE Symposium 2019 Guimaraes: Towards a Resilient Built Environment - Risk and Asset Management
SponsorAllplan, Brisa, Maurer, S and P
SeriesIABSE Symposium Report


  • Biodiversity
  • Concrete
  • Durability
  • Green roof
  • Insulation
  • Water retention


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