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.
🔧 Follow along as we identify, repair, and protect the affected area step-by-step:
Before
After
Before Works
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.
Need Expert Concrete Cancer Repairs?
If you’ve noticed signs of water damage, cracking, or spalling concrete in your basement or carpark, contact us for an on-site inspection and tailored solution. We provide:
Concrete cancer repairs
Basement waterproofing
Structural crack injection
Membrane waterproofing for slabs, walls, and joints
Where we work
We offer expert waterproofing and concrete repair solutions across Queensland, Victoria, and New South Wales, with experienced teams ready to take on residential and commercial projects Australia-wide. Our service areas include, but are not limited to:
Queensland
Providing comprehensive services throughout Brisbane — including Brisbane CBD, Fortitude Valley, Spring Hill, and West End — as well as across the Gold Coast in Southport, Surfers Paradise, Burleigh Heads, Coomera, Robina, and Tweed Heads.
We specialise in injection waterproofing, membrane waterproofing, and concrete cancer repairs for everything from basement slabs to high-rise facades.
Victoria
Working across Melbourne and regional Victoria — from the CBD, Southbank, St Kilda, and Docklands to Geelong, Werribee, Ballarat and surrounding areas.
Our team is equipped to deliver long-lasting waterproofing solutions, including injection crack sealing, structural joint repairs, and protective membrane applications tailored to your building.
New South Wales
Our NSW Metro franchise services Sydney and surrounding suburbs, offering advanced solutions for basement waterproofing, expansion joint sealing, and concrete spalling repairs in both new builds and existing structures. [email protected] | 0418 830 860