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The use of green roofs to improve wooden buildings for a future bioeconomy
RISE, Research Institute of Sweden, Division of Built Environment, Department of System Transition and Service Innovation, Unit of Energy and Environmental Systems Analysis, 41258 Gothenburg, Sweden.
RISE, Research Institute of Sweden, Division of Built Environment, Department of Building and Real Estate, Unit of Building Envelope and Building Physics, 50115 Borås, Sweden.
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Industrilized and sustainable construction.ORCID iD: 0000-0003-4843-8936
2022 (English)In: Proceedings of LCM 2021: 10th International Conference on Life Cycle Management / [ed] S. Albrecht; M. Fischer; C. Scagnetti; M. Barkmeyer; A. Braune, EDP Sciences , 2022, article id 04014Conference paper, Published paper (Refereed)
Abstract [en]

Bioeconomy helps to move towards a renewable, fossil-free future. The environmental impact is significantly reduced when replacing fossil-based products with bio-based alternatives. In a bioeconomy, all products are made from renewable and biogenic resources. In the building sector examples for biogenic sources are traditionally wooden building structures, while green roofs are becoming more popular. The goal of the present project was to assess the amount of biogenic carbon stored in green roofs and wooden buildings overall. The question is whether green roofs are improving the biogenic carbon usage of buildings and find out how that can be improved. The methods used are based on construction modelling, life cycle assessment and standardised environmental product declaration (EPD). The results indicate that wooden building structures are not enough for a complete biogenic building to move to a renewable, fossil-free future. Furthermore, the green roofs do add more biogenic carbon to the building than conventional roofs, while seen over the whole building these benefits are negligible. The results are presented as renewable and nonrenewable energy as well as biogenic carbon and greenhouse gas emissions. These are compared with conventional roofing based on non-renewable standard roofs in Sweden.

Place, publisher, year, edition, pages
EDP Sciences , 2022. article id 04014
Series
E3S Web of Conferences, E-ISSN 2267-1242 ; 349
National Category
Building Technologies
Research subject
Construction Management and Building Technology
Identifiers
URN: urn:nbn:se:ltu:diva-95613DOI: 10.1051/e3sconf/202234904014Scopus ID: 2-s2.0-85146864189OAI: oai:DiVA.org:ltu-95613DiVA, id: diva2:1736498
Conference
10th International Conference on Life Cycle Management (LCM 2021), Stuttgart, Germany [Online], September 5-8, 2021
Funder
Swedish Energy Agency, 46829-1Available from: 2023-02-13 Created: 2023-02-13 Last updated: 2023-02-13Bibliographically approved

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