Concrete Cancer Repair — Sydney
Concrete Cancer Repair, Sydney
Residential • Strata • Commercial • Infrastructure
Rust staining, cracking along reinforcement or concrete breaking away can be signs of concrete cancer. We identify what is causing the deterioration, then determine the appropriate repair.
Once reinforcement starts corroding it expands, cracking the concrete around it — the damage keeps spreading until the cause is treated.
What Is Concrete Cancer?
What Is Concrete Cancer and Why Does It Happen?
Concrete cancer occurs when the reinforcement steel inside concrete begins to corrode. As it rusts, the steel expands — cracking, and eventually breaking away, the concrete around it. Left untreated, it keeps spreading and can affect structural performance.
Rust staining
Orange or brown streaks bleeding through the surface, tracing where reinforcement sits underneath.
Cracking in straight lines
Cracks that run in a fairly straight pattern usually follow the reinforcement bars beneath the surface.
Spalling or crumbling
Concrete flaking, chipping or breaking away at edges, corners, balconies and soffits.
Hollow or bulging sections
A section that sounds hollow when tapped, or looks like it's lifting, often means it's delaminating underneath.
Our Concrete Cancer Repair Process
Our Concrete Cancer Repair Process
Concrete cancer repair only lasts if every step is done properly and in sequence. This is how we approach it.
Assess
We assess the extent of corrosion and spalling, including areas that look sound but are already delaminating underneath.
Remove & prepare
Affected concrete is removed and the exposed reinforcement is prepared back to sound material.
Treat the corrosion
Reinforcement is treated for corrosion, with steel replaced where section loss requires it.
Rebuild
Repair mortar is installed to reinstate the original profile and structural section.
Protect
A protective coating system is applied to guard against the corrosion starting again.
Why RemedialCore
Backed by process, licensing and decades of hands-on industry experience.
Every repair follows the same diagnosis-first discipline — documented, licensed and insured from start to finish.
Correct diagnosis first. We identify why the corrosion started before any repair method is chosen.
Decades of hands-on industry experience across hundreds of commercial, residential and infrastructure projects.
Fully licensed & insured — NSW Builder and Waterproofing licences, Public Liability, Home Owner Warranty and Professional Indemnity cover.
Engineering-aligned delivery where the repair scope requires engineering input or specification.
Clear communication with clients, consultants and project teams throughout the job.
Backed by CBS Builders — established in 2009, servicing Sydney.
Repair Systems We Use
Show Us The Problem
Send us photos of the affected concrete — we'll help identify what's happening.
Fill in the details and attach a few photos. We'll review what you send and advise you on the appropriate next step.
Call or email direct
Response time
We reply to every enquiry within one business day.
Service area
Sydney.
Different issue?
See all our services — crack injection, waterproofing, carbon fibre and corrosion protection.
We reply to every enquiry within one business day. If it's urgent, call us on 02 9502 2259.