Concrete cancer in carpark soffit slabs isn’t just a cosmetic issue — it’s a serious structural concern. If left untreated, it can result in falling concrete, compromised structural integrity, and expensive repairs down the line. Early intervention is key. Identifying and rectifying concrete spalling and corrosion as soon as signs appear helps maintain the safety and value of the structure.
What is Concrete Cancer?
Concrete cancer, also known as concrete spalling or concrete degradation, occurs when the steel reinforcement within a concrete slab begins to corrode. As the steel rusts, it expands and causes the surrounding concrete to crack and break away. This often happens due to water ingress through failed membranes; poor or deteriorated basement waterproofing; exposure to salt-laden air, especially in coastal environments. Without effective concrete repair and waterproofing solutions, the problem continues to spread.
Basement Carpark Example: Concrete Cancer Repair in Action
Concrete cancer is a common issue we see in both commercial and residential carparks across Australia. Below is a recent project where we carried out full concrete cancer rectification and waterproofing works in a basement carpark soffit slab.
Before
After
Concrete Cancer Repair: Step-by-Step
Follow along as we show how we identified, repaired, and protected the affected area.
Pre Work
Active leak and concrete cancer identified in the soffit slab, with loose concrete posing a hazard.
Preparation
Loose, failed concrete and debris removed to expose the full extent of the damage.
Steel Treatment
Corroded reinforcement ground back to clean, solid steel. Two coats of rust inhibitor applied to protect the reo from further corrosion.
Crack Sealing
SNSeal high-pressure injectable sealant used to seal cracks in the slab.
Repair
Failed concrete reinstated using HB 70 structural repair mortar.
Membrane Application
Epoxy membrane applied over the crack line for a final seal.
Protect Your Investment
Concrete cancer is progressive — the longer it’s left untreated, the worse it gets. Whether it’s a private basement carpark or a large commercial structure, we tailor our approach to suit the specific needs of each site.
Stop the rot before it spreads. Get in touch today!
Related Services:
Secant Pile Leak Sealing
Sealing water ingress through secant pile walls on coastal and high-groundwater sites using high-pressure injection methods.
Basement Waterproofing
Addressing active leaks in commercial and residential basement structures during or after excavation.
Excavation Stabilisation
Injection waterproofing for deep excavations where groundwater or seepage compromises site safety or delays construction.
Specialist high-pressure crack injection using SNSeal
Injectable Sealant to permanently seal concrete cracks and prevent future water leaks.
Retaining Wall Waterproofing
Treating cracked or leaking concrete and block retaining walls with non-invasive sealant systems.
Membrane Waterproofing
Durable external annd internal membrane systems installed to reinforce waterproofing barriers and protect retaining walls, garages, and basements from persistent water ingress.
Waterproofing Service Areas:
Australia-Wide, Key Areas include Queensland, Victoria & New South Wales
We provide waterproofing services Australia-wide, with our head office based on the Gold Coast. Our expert waterproofing solutions cover:
Queensland, including key service areas in Brisbane such as but not limited to Brisbane CBD, Fortitude Valley, Spring Hill, and West End, as well as Gold Coast areas like Southport, Surfers Paradise, Burleigh Heads, Coomera, Robina, and Tweed Heads. From injection waterproofing to membrane waterproofing, we offer a range of reliable solutions for both residential and commercial properties.
Victoria, we provide professional waterproofing services in Melbourne and surrounding areas, including but not limited to Melbourne CBD, Southbank, St Kilda, and Docklands. We also service other parts of Victoria, offering membrane waterproofing and other high-quality waterproofing solutions across regions such as Geelong, Werribee, Ballarat, and beyond. Our injection waterproofing methods ensure long-lasting protection for your property.
New South Wales, Our NSW Metro franchise is available to assist with all your waterproofing needs. From injection waterproofing to membrane waterproofing, we have the expertise to solve a wide range of waterproofing problems. You can reach our NSW Metro franchise directly at [email protected] or 0418 830 860.
Need Help With Concrete Cancer or Structural Damage?
If you’re seeing signs of cracking, spalling, or water-damaged concrete in your basement or carpark, get in touch to book a free on-site inspection and tailored repair solution.