Bullock et al. (2026): Assessing Urban Green Roofs for CO₂ Removal via Enhanced Rock Weathering in Europe

Liam A. Bullock, Rasesh Pokharel, Amy Lewis, Peter-Paul Laarhuis, Robert van der Luijt, Quirina Rodriguez Mendez, Sabine Fuss, David Benavente, IN: Environmental Advances, https://doi.org/10.1016/j.envadv.2026.100708

Green roofs represent a novel and promising platform for integrating enhanced rock weathering (ERW) as a carbon dioxide removal (CDR) strategy within urban environments. By utilising underused rooftop spaces, rock (feedstock)-amended green roofs for ERW could contribute meaningfully to climate mitigation targets while fitting within existing markets and policy frameworks. Despite this, a comprehensive assessment of opportunities and barriers to deployment is missing. Here, the authors provide a conceptual assessment, serving as a benchmark for the potential for large-scale ERW green roof deployment in Europe, examining literature from similar applications and estimating theoretical CDR potential at European and global scales, and identifying key opportunities and challenges.

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