Expert Concrete Cancer Repair for External Walls: Remediation & Waterproofing Solutions
Concrete cancer is a critical issue for external walls, especially those exposed to harsh environmental conditions. We recently tackled a severe case of concrete cancer on a cracked external wall running alongside a carpark and tennis court. Spanning approximately 15 linear metres, the wall exhibited clear signs of concrete degradation, requiring urgent repairs to prevent further structural damage.
Initial Findings
Our inspection confirmed extensive cracking and early-stage concrete cancer. We also found that existing plumbing brackets were failing, causing the pipework to bend and lose fall—creating conditions for ongoing water ingress and added pressure on the wall.
See below for a visual breakdown of the steps we took to restore the wall and ensure long-term protection:
Step 1: Inspect of the area
Before any work began, we conducted a thorough inspection to assess the extent of the cracking and identify early signs of concrete cancer. This step was crucial in determining the appropriate scope of remedial works.
Step 2: Close Inspection of Wall Crack
A detailed inspection of the crack revealed extensive damage running approximately 15 lineal metres along the wall. Visible signs of concrete cancer were present, including spalling concrete and rust staining—indications that moisture had reached the steel reinforcement beneath the surface.
Step 3: Preparation Works
Pipework Removal: We began by removing the existing pipework and storing it securely for reinstallation.
Demolition of Failed Concrete: All loose and deteriorated concrete was removed to expose the full extent of the damage, including any corroded steel reinforcement.
Surface Preparation: The wall surface was ground back to create a stepped profile and a smooth finish ready for sealing.
Step 4: Concrete Reinstatement
Using Structural Repair Mortar, we re-formed the damaged sections to restore the original wall profile.
Step 5: Membrane Primer Application
Once the damaged concrete was removed, reinforcement treated, and repairs completed, we applied a primer to the wall surface. This step is essential to ensure proper adhesion of the polyurethane membrane, which forms the final waterproofing layer.
Final Step: Membrane Application
To complete the remediation, we applied two coats of UV-stable polyurethane membrane over the repaired section. This durable, flexible membrane provides a long-term waterproofing solution, protecting the wall from further moisture ingress and UV exposure.
Long-Term Protection Achieved
By addressing both the visible damage and underlying causes, this remediation ensured the structural integrity of the wall was restored and protected against future water ingress. From detailed inspection through to structural repair and high-performance waterproofing, each step was carefully executed to deliver a long-lasting result.
If you’re noticing cracks, spalling, or signs of water damage on your building, it’s worth getting it assessed before the problem worsens. Get in touch with our team to discuss a tailored solution for your property.
Related Services
Waterproofing Service Areas
Serving Customers Worldwide — Across the USA, Canada & All Regions of Australia (QLD, Brisbane, Gold Coast, VIC & NSW)
USA
We’re excited to announce that Stop & Seal is now in the USA, with our head office in California and operations close to being underway in New York. Building on our success in Australia, Canada, and the UK, we’re bringing our patented waterproofing technology to American properties, delivering the same proven solutions trusted worldwide.
Canada
We’re thrilled to announce that Stop & Seal is now available across Canada through our partnership with Masscon Construction. Based in Montreal, Masscon will be handling all Canadian operations and bringing our unique waterproofing solutions to customers throughout the country. We’re really excited about this international expansion and the chance to seal your leaks on an international scale.
UK
Stop & Seal is now available in the United Kingdom. Through our new UK-based partners, we’re bringing our trusted sealing technology to customers across England, Scotland, Wales, and Northern Ireland. We’re really looking forward to serving the UK market and growing our international family!
We provide waterproofing services Australia-wide, with our head office based on the Gold Coast. Our expert waterproofing solutions cover:
Queensland
Key service including 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 specialising in commercial properties.
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 admin@stopandsealnswmetro.com.au or 0418 830 860.
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.
OUR CLIENTS
