Regenerative Roof Scorecard

This document is a companion guide to the Regenerative Roof Scorecard, a decision-support tool developed by IUCN in collaboration with Holcim, with technical leadership from Second Nature Ecology + Design, and industry testing with Zinco. The Scorecard evaluates regenerative roof designs in two areas: site-based benefits and embodied impacts. Site-based benefits include biodiversity support, health and well-being, climate change adaptation and mitigation. Embodied impacts include environmental impact at extraction, carbon footprint, water impact and harmful substances and pollution reduction. It offers designers, building owners, and cities a quick, efficient, science-based way to compare these benefits and impacts. This guidance is intended mainly
for designers and building owners. For cities and public authorities, the Scorecard can provide a practical framework to assess roof-level nature performance and inform policies, guidelines, recognition programmes, procurement criteria or other mechanisms such as incentives that encourage more ambitious roof design.