Understanding how mass timber buildings react to fire is essential for everyone involved in shaping a sustainable built environment. Whether you work in design, engineering, construction, manufacturing, policy or insurance, ensuring fire safety is a shared responsibility across the entire built environment sector. As the use of timber grows, so does the body of evidence accounting for fire safety standards as part of carefully regulated urban systems. A rising number of fire safety studies are available to support performance‑based design and informed decision‑making which meet strict building codes and regulation.