Carbon footprint including effect of carbon storage for selected wooden facade materials |
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| Authors: | Lars G F Tellnes Lone Ross Gobakken Per Otto Flæte Gry Alfredsen |
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| Institution: | 1. Department of Material and Processes, Norwegian Institute of Wood Technology, Oslo, Norwaylars.tellnes@treteknisk.no;3. Section Wood Technology, Department of Forest Technology, Norwegian Forest and Landscape Institute, ?s, Norway;4. Department of Material and Processes, Norwegian Institute of Wood Technology, Oslo, Norway |
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| Abstract: | AbstractThe outer facade constitutes a substantial volume of the total consumption of materials used in a building and the need for maintenance of the facade makes it especially interesting from a life cycle perspective. The range of wooden materials and products used for facades has different impacts over the life cycle, but the analyses so far have not included a time-adjusted global warming potential (GWP). Wooden facade materials were assessed with respect to their life cycle carbon footprint based on the environmental product declarations (EPD) and adjusted according to EN15804. The results showed low impacts of untreated Scots pine heartwood (≈1 kg CO2-eq. per square meter m2]), medium for thermally modified Scots pine, coated Norway spruce and oil/copper–organic preservative-treated Scots pine (1–5 kg CO2-eq. per m2) and high for furfurylated Scots pine and acetylated Radiata pine (5–10 kg CO2-eq. per m2). The results with time-adjustment showed that these methods have a potential large effect on the carbon footprint of wooden claddings. The inclusion of biogenic carbon flows and timing seems to be more important than the difference between the product when biogenic carbon is not included. This fact highlights the importance time-adjusted GWP would have for wood products EPDs. |
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| Keywords: | Life cycle assessment carbon footprint wooden facade materials |
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