This project centred on a mixed-use building in St Leonards that required critical compliance upgrades and long-term protection measures. The scope was driven by a council order and focused on three major components: cladding replacement, rooftop re-waterproofing, and window and door renewal.

The Challenge

The building’s ACP cladding system had been identified as non-compliant under current fire safety regulations. Alongside this, the rooftop waterproofing had reached the end of its serviceable life, and original windows and doors were no longer performing effectively. The challenge was to coordinate these three distinct yet interconnected scopes into a single, efficient program while maintaining occupant safety and minimising disruption.

Approach

The project began with a staged methodology:

• Risk management first. The ACP cladding was prioritised to address compliance and fire safety obligations under council requirements.
• Integration of scopes. Re-waterproofing and glazing works were planned to align with access systems already required for the façade, reducing duplication and disturbance.
• Stakeholder engagement. Clear communication with council, building management, and residents ensured the works proceeded in line with expectations and approval pathways.

Execution

The works were delivered in structured phases:

1. ACP Cladding Replacement
   • Removal of all non-compliant panels.
   • Installation of a certified, compliant cladding system.
   • Fire-stopping and cavity detailing completed in accordance with NCC requirements.
2. Rooftop Re-Waterproofing
   • Full removal of existing failed membranes.
   • Installation of a new multi-layer waterproofing system designed for longevity and resistance to ponding.
   • Detailed attention to drainage falls and termination points.
3. Window & Door Replacement
   • Removal of original units that no longer sealed effectively.
   • Installation of new, thermally efficient and water-resistant systems.
   • Careful sequencing to maintain security and weatherproofing throughout works.

Each element was independently inspected and verified under inspection test plans, ensuring compliance and durability at every stage.

Outcome

The Chandos Street project delivered three significant outcomes:

• Compliance and Safety – The building now meets fire safety obligations with a fully certified cladding system.
• Asset Protection – A watertight rooftop and modern joinery systems provide protection from water ingress and weather exposure.
• Long-Term Value – By integrating scopes and sequencing works efficiently, the project extended the life of the building envelope while minimising disruption for occupants.

This project highlights the importance of treating cladding, waterproofing, and joinery not as isolated tasks, but as interconnected components of the building envelope. When addressed together, they deliver stronger outcomes for compliance, performance, and long-term resilience.