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Effect of service life aspects on carbon footprint: a comparison of wood decking products

  • Lars G. F. Tellnes EMAIL logo , Gry Alfredsen , Per Otto Flæte and Lone Ross Gobakken
Published/Copyright: September 7, 2019
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Abstract

Carbon footprint over the life cycle is one of the most common environmental performance indicators. In recent years, several wood material producers have published environmental product declarations (EPDs) according to the EN 15804, which makes it possible to compare the carbon footprint of product alternatives. The objective of this study was to investigate the effect of service life aspects by comparing the carbon footprint of treated wood decking products with similar performance expectations. The results showed that the modified wood products had substantially larger carbon footprints during manufacturing than preservative-treated decking materials. Replacement of modified wood during service life creates a huge impact on life cycle carbon footprint, while maintenance with oil provided a large contribution for preservative-treated decking. Hence, service life and maintenance intervals are crucial for the performance ranking between products. The methodological issues to be aware of are: how the functional unit specifies the key performance requirements for the installed product, and whether full replacement is the best modeling option in cases where the decking installation is close to the end of the required service life.

  1. Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.

  2. Research funding: The authors wish to acknowledge the financial support of COST FP 1407 to enable international cooperation and for funding part of the travel to present this research at the ECWM conference.

  3. Employment or leadership: None declared.

  4. Honorarium: None declared.

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Received: 2019-02-27
Accepted: 2019-07-29
Published Online: 2019-09-07
Published in Print: 2020-03-26

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