Coliseum

Coliseum is dedicated to promoting sustainability within the construction industry by providing circular building materials, thereby reducing waste and minimizing environmental impact. Our mission is to lower the carbon footprint of the construction sector by facilitating the use of reclaimed and surplus materials, making them a viable and cost-effective alternative to new conventional materials. The construction industry significantly contributes to environmental degradation, accounting for nearly 40% of global energy consumption, approximately 30% of CO₂ emissions, and 50% of materials extracted annually. Additionally, it generates almost one-third of the world's waste. In light of these statistics, it is imperative to adopt more sustainable practices to ensure a greener future for upcoming generations. While advancements in building energy efficiency are commendable, it is equally crucial to address the sustainability of construction methods themselves. Vast quantities of construction materials are either recycled or discarded in landfills, many of which could be repurposed to extend their lifecycle. At Coliseum, we firmly believe that reusing construction materials is essential for building more sustainably. By embracing a circular approach, we can transform construction into an environmentally friendly activity and contribute to addressing the climate challenges we face. We are committed to enhancing the sustainability of the construction sector and invite all industry stakeholders to join us in this vital endeavor for the future of our planet. We are Marc-Antoine and Barthélemy, two entrepreneurs passionate about contributing to a more sustainable construction sector. Drawing on our experience in the construction world—Marc-Antoine as an entrepreneur and Barthélemy as a client—we have often observed that implementing more circular practices is often so complex that many give up. That's why we decided to take action by creating Coliseum, a one-stop supplier of circular building materials (reuse and surplus). We are convinced that simplicity and accessibility are key to encouraging construction professionals to adopt more sustainable practices. Our mission is to make using circular building materials simple and affordable for everyone. At Coliseum, we want to help construction professionals integrate more sustainable practices and contribute to a greener future. Coliseum's approach is distinguished by three key aspects: Wide Availability : We offer an extensive range of materials in significant quantities, sourced from a vast network of partners consolidated into a single catalog. Quality Assurance : Depending on project requirements, we provide technical verification of materials, ranging from technical information sheets to laboratory tests. Operational Ease : We deliver materials directly to your site on the desired date, managing all necessary upstream operations such as disassembly, reconditioning, and storage. Our process involves three main steps: Needs Analysis : We assess your project and constraints (quantities, price, quality, and timing) to identify areas with the most potential in terms of availability, CO₂ impact, and economic feasibility. Research and Validation : We search our extensive catalog to formulate concrete proposals, including prices and deadlines. If necessary, we conduct quality tests or certifications. Execution and Delivery : We deliver materials to your site on the desired date and provide an analysis of the CO₂ impact of the operation. If required, we coordinate additional operations such as dismantling, cleaning, and reconditioning. By choosing Coliseum, construction professionals can improve the environmental impact of their business, comply with current and future regulatory frameworks, and find innovative solutions to cost and availability challenges. We are here to support you in integrating more sustainable practices into your projects and contributing to a greener future.