Automation in construction is one of the important issues in the field of robotics, but is distinct from factory automation (FA). Because of variations in materials and management, the role of automation in construction is often limited. A curtain wall is a large, heavy breakable object and requires precision installation, making it a better candidate for automated installation. A curtain-wall installation robot was built and tested at a real construction site and results were analyzed to refine the new concept of curtain-wall installation automation.