Sirius Building, Sydney

The revitalisation of the iconic Sirius Building required a carefully considered approach that balanced modern performance with the preservation of its architectural heritage. Central to the project was the integration of copper cladding across balconies and decorative hoods, enhancing the building’s distinctive character while maintaining its historical significance. The project demanded solutions that delivered not only a striking aesthetic outcome, but also long-term durability, safety, and structural integrity.

To meet these complex requirements, the ARC team developed a highly detailed and precise cladding system tailored to the building’s unique geometry and strict engineering constraints. With millimetre-level accuracy essential, ARC’s in-house drafting team produced advanced models and detailed shop drawings to ensure every component aligned perfectly during installation. The design also adhered to critical weight limitations and non-combustible fire safety requirements, while strategic coordination with the builder’s construction schedule ensured seamless progression from design through to fabrication and installation.

A key element of the project’s success was ARC’s staged manufacturing and installation approach. By developing and testing full balcony prototypes, the team was able to refine designs, resolve challenges early, and optimise manufacturability before full-scale production commenced. Components were laser-marked with stage and part numbers to streamline onsite assembly, improving efficiency and accuracy throughout the installation process. This iterative and methodical approach ensured the final outcome reflected the project’s high standards of craftsmanship, engineering precision, and architectural excellence.

For more information, read our Sirius Building Case Study here.