Concrete Cancer Repair Sydney
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What is Concrete Cancer?
Concrete cancer is one of the most serious structural issues affecting high-rise, commercial, and industrial buildings. Left untreated, it can compromise the integrity of your property, leading to safety hazards, expensive repairs, and even structural failure.
Sonaa provides concrete cancer repair services designed to restore your building’s strength and prevent further damage. Our expert team identifies the root cause of the issue, removes affected areas, and applies high-quality repair solutions to ensure long-lasting protection. Whether it’s a commercial tower, apartment complex, or industrial facility, we deliver tailored solutions that safeguard your property for years to come.
What Causes Concrete Cancer?
Concrete cancer occurs when the steel reinforcement inside concrete begins to rust. As the steel corrodes, it expands, causing the surrounding concrete to crack, weaken, and eventually break away. Several factors contribute to this condition, including:
- Moisture Ingress – Water entering through cracks accelerates corrosion and weakens the structure.
- Poor Waterproofing – Inadequate protective coatings allow water to seep in and react with steel reinforcements.
- Structural Stress – Shifting foundations and ongoing wear-and-tear can create fractures that expose steel to the elements.
- Low-Quality Concrete Mix – Insufficient cement content or poor curing can lead to early deterioration.
If left unaddressed, concrete cancer worsens over time, leading to costly and invasive repairs.
How to Prevent Concrete Cancer
Methods for this include:
- Waterproofing. High-quality waterproofing membranes will keep water leakage to a minimum as they are significantly resistant to tears and punctures. Specialised paints may also be an option.
- Resolve any water leaks and drips.
- Repair any breaks or cracks in the concrete surface as soon possible and this is especially vital in exposed areas as water will compromise the strength of the concrete rapidly.
- Regular maintenance and check-ups.
Concrete Cancer – what are your options?
Sonaa offers concrete repair with a range of applications to find the perfect solution for all concrete repair requirements. Concrete cancer can be remedied in all building structures. For a successful restoration, the spalled concrete must be removed, and any exposed steel must either be renewed or cleaned and treated. The area is then reconstructed to the original concrete profile using cement mortar, epoxy mortar or concrete. The chosen product will depend on the size of the damage and the structural requirements. Cracks are restored using suitable epoxy resins, specific mortars and injection technique.
The key to an optimal outcome with concrete repair is the knowledge of the contractor and the skills of the applicator.
Our Concrete Cancer Repair Process
Repairing concrete cancer requires more than just patching cracks—it demands a precise approach to eliminate the root cause and prevent recurrence. Our process includes:
- Comprehensive Inspection – Identifying all affected areas and assessing the severity of the damage.
- Concrete Removal – Cutting out damaged sections to access the corroded reinforcement.
- Steel Treatment – Cleaning, repairing, or replacing rusted reinforcement bars to halt further deterioration.
- Structural Repair – Applying high-strength concrete repair solutions that restore the building’s integrity.
- Waterproofing & Protection – Sealing the repaired areas with specialised coatings to prevent future moisture damage.
Advice, tips, and considerations for choosing a concrete repairer
Workmanship
Concrete repair requires a skilled team of workers and professionals precisely trained in modern concrete repair procedures ensuring that optimal standards of workmanship are sustained throughout the job. Reliability and dependability are also a priority.
Procedures
Repairing concrete requires the use of the correct methods. The right team will take the time to evaluate the condition of the concrete and choose the best systems that will provide the ideal result.
Materials
Materials are the final component to a dependable concrete repair. High quality, new and reliable materials are required. The chosen materials must be mixed, proportioned and handled according to the manufacturer’s recommendations, ensuring a tight bond and an enduring repair. Experienced contractors will produce a lasting result that is inconspicuous and well bonded to the existing surfaces.
Sonaa is at the leading edge of technology within the concrete restoration market. With our extensive technical expertise, our specialised team of professionals will repair your concrete spalling and cracking issues before they intensify or create safety issues. We will deliver high-quality, cost-effective concrete repair designed for your requirements. Sonaa have a vast range of applications to give you the perfect solution to your concrete repair needs. We are committed to efficiency, quality and superior safety standards. Our concrete specialists are chosen for their skill, knowledge and qualifications to give you outstanding results with every project.
Please contact us for a free quote.
Frequently Asked Questions
Common signs include cracking, rust stains on concrete surfaces, flaking or peeling concrete, and exposed reinforcement bars. If you notice any of these, an inspection is essential.
Yes, depending on the severity. Minor cases can be treated with targeted repairs, while advanced deterioration may require larger-scale restoration.
With professional repair and proper maintenance, the affected areas can remain stable for decades. Regular inspections help ensure ongoing protection.
Yes. If left untreated, it can weaken the structure, leading to falling debris, structural instability, and costly repairs. Early intervention is crucial.
Water penetration and exposure to air cause steel reinforcement to oxidise. Over time, this expansion inside the concrete leads to cracks and spalling.