This two-day project in Sydney’s CBD involved the rehabilitation of a leaking cast iron sewer vent stack within a multi-storey commercial building. The works extended from Level 19 down to Level 2, requiring precise planning, coordination, and safety management to minimise disruption in a high-traffic environment.
Our team at Ready Set Reline executed the project efficiently over two half days of preparation and one full day of relining, delivering a compliant, long-lasting, and non-invasive solution.
The client required relining of existing sewer vent stacks across multiple levels in a busy, occupied high-rise building. The primary objectives were to:
Our team followed a structured and proven approach to ensure precision, efficiency, and full compliance with Australian standards.
Day 1
Site Preparation and Assessment
The first step was to prepare the site for relining. Our team cleared obstructions that could hinder access to the pipes, including any external structures that might complicate the process. Excavation was carried out to ensure direct access and to replace faulty sections of sewer pipe. Once the site was prepared, we conducted a CCTV drain camera inspection to thoroughly assess the condition of the pipes. This allowed us to map out the damage and develop a precise plan for relining.
Cleaning and Prepping the Pipes
Before installing the liner, the pipes underwent a deep clean using high-pressure drain cleaning equipment. This step was essential to remove debris, residue, and any build-up that could interfere with the relining process. We then used specialised Picote technology to etch the pipe surface, ensuring optimal adhesion for the liner. With the pipes prepped and cleaned, the system was ready for relining.
Day 2
Installation of the Liner
The pipe relining process involved impregnating a Water Marked superior liner with a single part U.V resin, carefully measured and mixed to ensure durability. The liner was then inserted into the pipe and aligned to cover the damaged sections. UV light was used to cure the liner, hardening it into a seamless, corrosion-resistant pipe lining. This stage required precision to ensure proper alignment and complete coverage.
Final Inspection and Restoration
After the liner was cured, we conducted another CCTV camera sewer pipe inspection to confirm the integrity of the relining process. Any excess material at the pipe ends was trimmed to restore proper flow. We inserted the robotic cutter and reinstated multiple junctions. Once the pipes were fully functional, the excavation site was backfilled, and the surface was restored to its original condition.
Throughout the process, we maintained close communication with building management and the client team to ensure safety, coordination, and transparency at every stage.
The key challenge for this project was scheduling and access management in an occupied commercial building. The client requested that works be carried out on a Saturday, meaning the team had to carefully adjust resources, coordinate across multiple floors, and complete the full relining scope without affecting building operations or tenants.
The relining process provided a seamless, permanent solution to the damaged pipes. Using advanced technology, the new lining offered exceptional resistance to corrosion, cracks, and leaks, significantly extending the lifespan of the system while meeting the highest durability standards.
All work adhered to Australian Relining and Plumbing Standards (AS3500). UV curing ensured the liner hardened under optimal conditions, forming a robust, long-lasting repair. A final CCTV sewer pipe inspection validated the success of the relining, providing the client with full confidence in the outcome.
Team Collaboration: Our crew demonstrated exceptional teamwork, problem-solving, and adaptability across multiple levels.
Safe, Compliant Delivery: Completed incident-free and fully compliant with AS3500 Plumbing & Drainage Standards.
Successful Execution of a Major Project: Delivered high-quality results on a large-scale urban job, strengthening our reputation for professional, reliable solutions.
The project was completed safely, efficiently, and to the client’s satisfaction — within the scheduled weekend window. Our team’s planning, collaboration, and attention to detail ensured the successful delivery of a technically complex, large-scale relining project in Sydney’s CBD.
