"Mass timber buildings can have very high carbon emissions" says Amy Leedham
"Mass timber buildings can have very high carbon emissions" says Amy Leedham
The article argues that the widespread perception of mass timber as an inherently low-carbon solution constitutes a dangerous oversimplification that facilitates greenwashing. While wood does sequester carbon, experts warn that assuming mass timber buildings are automatically carbon-neutral ignores critical variables such as transportation, forest management practices, and the embodied carbon of non-wood structural components. This myth leads to an unjustified glorification of the material, obscuring the reality that poorly executed mass timber projects can have higher carbon footprints than some optimized concrete alternatives. Furthermore, the narrative highlights that the environmental benefits of timber are only realized if the material is sustainably sourced and responsibly managed at the end of its life. If timber ends up in a landfill, the stored carbon is released, negating its initial advantages. The authors emphasize that designers and engineers can only influence decisions up to the point of construction, making it essential to advocate for conscientious sourcing and transparent lifecycle assessments rather than relying on the false premise that all wood is inherently superior to other building materials. Ultimately, the piece calls for a more nuanced industry approach that rejects binary thinking between timber, steel, and concrete. It suggests that global carbon taxes could drive genuine sustainability by forcing all material sectors to reduce emissions, rather than letting one material dominate under a misleading "green" label. By debunking these myths, the article aims to promote responsible innovation and ensure that mass timber is used effectively as part of a broader, balanced toolkit for low-carbon construction, rather than as a silver bullet solution.
Source: dezeen.comPublished on 2023-03-31