Six winners of CBC 2025 Open Call

CBC is thrilled to announce the six winners of the 2025 Open Call! Congratulations to La Rue, ERFMI, Ressurssentral, Material Index, Circue Aps, and Biesmans Group!​

We are happy to see this space in the industry deepening and broadening and are excited to see how the winning projects will evolve!​

​Read below for the introductions to the winning projects

• European Resilient Flooring Manufacturers' Institute—Project Loop is a circular economy initiative led by ERFMI to pilot a collection and sorting hub for post-consumer resilient flooring waste in Belgium. The project aims to validate sorting methods, stakeholder roles, and financial models to create a scalable, replicable blueprint for Europe. By 2030, Project Loop aspires to enable the recycling of 60,000 tonnes of flooring waste annually, supporting EU sustainability goals.‍
• Sirkulær Ressurssentral—A non-profit organisation driving the shift towards a circular construction industry by developing infrastructure, networks, and solutions for large-scale reuse of building materials. The “Refabricated in-situ concrete” project aims to pioneer methods and documentation standards for safely reusing cast-in-place concrete in new structural applications, unlocking one of construction’s largest untapped reuse potentials.
• ‍Biesmans Group—The “Roof-as-a-Service” initiative introduces a circular, zero-CAPEX flat roofing model where clients pay a monthly fee for guaranteed roof performance, while ownership remains with the provider. The model addresses circular design, new business models, and reduced material flows, offering a replicable blueprint for systemic change across the EU construction sector.
• Circue ApS—Re:Claim transforms how insurance property claims are settled by shifting from “new-for-old” to a “like-for-like” model that prioritizes the use of secondary materials in building repairs. Through pilots with Nordic insurance companies, the project develops and tests alternative claims processes and industry guidelines that can scale across Europe, addressing barriers such as risk, life expectancy, and availability to accelerate circular construction by unlocking demand-side leverage.
• Material Index—The project will create open-access costing tools to make deconstruction and material reuse viable at the earliest decision points. Benchmarking real-world costs, model residual values from live data, and codify tested workflows so any QS, PM, or client can confidently plan for reuse. By removing financial and procedural uncertainty, the solution enables systemic adoption of circular procurement.
• La Rue asbl—ISOL’ution intends to give value to reclaimed and re-used insulation material for buildings. They use a measurement machine to characterise thethermal conductivity of the reclaimed insulation material, to allow for quickerand easier measurement of the actual thermal performance. This creates a moreeffective reuse of the insulation materials and thus a better circular economy.

We look forward to support and follow the six projects!