Our Concrete Injection Solutions:
Polyurethane Crack Injection
Specialised form of concrete crack injection waterproofing used to seal and protect concrete structures from water ingress. It involves injecting a water-reactive polyurethane resin into cracks, where it expands to form a flexible, watertight seal
Epoxy Crack Injection
Specialised method used in structural concrete crack repairs to restore the integrity of damaged concrete. It involves injecting a high-strength epoxy resin directly into cracks, where it bonds the fractured sections together and forms a solid, impermeable seal.
Hybrid Systems
A combination of both polyurethane (to stop water ingress) and epoxy (to restore strength) used for complex commercial or civil slab repairs.
Why Choose Us?
20+ Years in Remedial Services
We have extensive hands-on experience dealing with complex issues like concrete cancer, spalling, water ingress, and structural reinforcement.
Licensed Waterproofing Contractors
S&S Remedial is fully licensed and ensures their work strictly complies with Australian Building Standards (such as AS 3740-1994).
Rigorous Application Process
Concrete crack injection professionals at S&S Remedial follow a strict, diagnostic approach to ensure durability.
Localised Coverage
We specifically service residential, commercial, and industrial properties across Brisbane, the Gold Coast, and surrounding suburbs, making our crack injection contractors highly experienced with local climate, soil conditions, and building codes.
Concrete Crack Injection and Repair Process
At one of the best concrete crack repair contractors from Brisbane, we follow a proven step-by-step process to ensure every waterproofing repair is thorough, effective, and long-lasting.
Free Site Assessment and Consultation
Comprehensive diagnostic inspection to determine the root cause of the damage. Technicians assess the crack type, depth, and structural movement.
They utilize tools like crack gauges and moisture meters, and test for moisture content and carbonation depth. Based on the assessment we determine the appropriate resin
Surface Preparation
Proper preparation is critical to ensure the resin bonds successfully to the concrete without delaminating. The crack and the surrounding concrete area are meticulously cleaned of loose materials.
If necessary, the crack is routed or ground to create an optimal bonding profile. Injection ports (packers) are installed at strategic intervals directly along the path of the crack to allow for controlled, high-pressure material delivery.
Surface Sealing
Before the injection begins, a surface sealant (such as an epoxy paste) is applied over the face of the crack and around the base of the injection ports. This caps the crack, containing the liquid resin during the injection phase and preventing it from leaking out of the front of the wall or slab.
High-Pressure Concrete Crack Injection
Using specialized pumping equipment, the formulated resin is injected directly into the ports. The material is pumped under pressure, forcing it deep into the internal structural voids and right through to the back of the concrete element.
If Polyurethane: The resin reacts with moisture, expanding rapidly to fill voids and creating a flexible, watertight seal to stop active leaks. If Epoxy: The liquid resin fills the capillary tracts and fractured sections, bonding them rigidly together.
Curing and Monitoring
The technicians monitor the injection to ensure full penetration and coverage.
Polymerization: The resin is left to cure. Polyurethane cures relatively quickly to stop immediate water flow, while epoxy typically takes 24–48 hours to achieve its full load-bearing, compressive strength (often curing stronger than the original concrete).
Final Cleanup, Inspection
Once the internal resin has fully cured, the final restorative steps are taken. The injection ports are removed or knocked off.
The surface sealant is ground off, leaving the concrete face smooth. A final inspection is conducted to confirm the absence of voids and verify structural continuity.
💧 Need Fast, Reliable Concrete Crack Repair?
Don’t let small cracks turn into bigger structural problems. Our team delivers professional concrete crack repair solutions that restore strength, improve appearance, and help prevent further damage.
Book your inspection today and get expert advice on the right repair method for your concrete surface.
0468 760 750 | 0407 560 277
Brand We Trust
Testimonials
These guys do an excellent job and delivered outstanding results with their structural concrete crack repair service. I’ve used them to seal foundation cracks and restore integrity to a retaining wall, and I wouldn’t trust anyone else with this kind of work. Thanks, S&S Remedial Services!
– Jack Thompson
Stoked with the prompt basement crack repair service and quality workmanship! Shawn and his expert team delivered a smooth concrete slab injection repair in my basement—highly recommend them to anyone looking for reliable, top-tier results that truly last.
– Dan Hamilton
I cannot fault these guys. They handled the commercial concrete crack repair on my property in Brisbane. Fantastic communication, streamlined process, and top-quality crew and workmanship. Highly recommend this Brisbane based concrete crack repair company!
– John Becham
I was dealing with persistent water leaks through concrete cracks and needed urgent repair. I searched for a local concrete crack repair near me and found S&S Remedial. From the first call to the final resin injection for concrete foundations, they were professional, fast, and incredibly thorough. Highly recommend them to anyone facing concrete leak issues.
– Lance Carlton
S&S Remedial provided excellent epoxy concrete slab injection repair for our property on the Gold Coast. The team was professional, efficient, and the results were flawless. No more leaks—just peace of mind, rain or shine!
– Olivia Hayes
The concrete repair injection was handled professionally from beginning to end. The concrete wall injection repair has held up flawlessly through heavy rain and shifting soil. The team worked efficiently, and the waterproofing quality was outstanding.
– Isla Bennett
Project Gallery
Concrete floor crack repair epoxy, Highland Park QLD, Australia
Potts Street East Brisbane concrete wall crack injection
Resin injection for concrete foundations, Currumbin Waters
Polyurethane concrete retaining wall crack repair, Queensland
Potts Street, East Brisbane Foam injection concrete repair
Basement & Retaining Wall Waterproofing, Tallaroon Street Jindalee
Which Crack Injection Method Is Right for You?
Epoxy Crack Injection
Best for: Structural cracks in foundations, beams, and slabs.
- Bonds fractured concrete back together for added strength
- Creates a rigid, high-strength seal
- Ideal for cracks that are dry and stable with no movement
This method is often used when restoring structural integrity to concrete elements in residential and commercial buildings.
Polyurethane Crack Injection
Best for: Leaking or moving cracks in basements, retaining walls, and tunnels.
- Expands when it comes into contact with moisture
- Seals cracks and prevents water ingress
- Remains flexible, accommodating minor structural movement
Grouting Crack Injection
Best for: Large or deep cracks in heavy-duty concrete such as dams, bridges, or infrastructure.
- Uses cement-based or chemical grout
- Effectively fills voids and gaps under pressure
- Commonly used in industrial, civil engineering, and large-scale projects
Grouting is less common for standard homes but is critical for infrastructure waterproofing and stability.
Stitching Crack Injection
Best for: Stabilising non-moving cracks in masonry or concrete walls.
- Involves drilling and inserting steel staples across the crack
- Reinforces the structure and prevents further separation
- Commonly used in heritage restoration and structural repair projects
Frequently Asked Question
How long does the concrete crack repair last?
When done professionally, crack injection waterproofing can last 10–15 years or more, depending on the material used, environmental conditions, and ongoing maintenance.
How do I know if I need Brisbane concrete crack injection contractor?
1. The “Coin Test” (Width and Depth)
- DIY Territory: If the crack is thinner than a credit card (less than 1mm) and hasn’t changed in months, it’s likely a shrinkage crack. You can often handle this with a hardware store crack filler.
- Pro Territory: If you can fit a 10-cent coin into the crack (roughly 2mm or wider), or if the crack is deep enough that you can’t see the bottom, it requires high-pressure concrete slab injection to fill the entire void, not just the surface.
2. Is it “Active” or “Leaking”?
Brisbane’s high humidity and storm seasons make water ingress a major issue.
- The Weep Sign: If you see white powdery deposits (efflorescence) or damp patches around the crack after rain, the crack is a “conduit” for water.
- The Injection Fix: Concrete crack injection contractors use Polyurethane for these. It reacts with water to expand and create a watertight foam seal. If you just patch the surface, the water pressure will eventually pop the patch off.
3. Structural Warning Signs
If the crack is a symptom of your house “moving,” a simple patch won’t work. Call a Brisbane concrete crack injection contractor if you notice:
- Stair-step patterns in brickwork or concrete blocks.
- Horizontal cracks in retaining walls or foundation walls (this often indicates high soil pressure).
- Differential movement: One side of the crack is higher than the other (a “trip hazard”).
Is the process disruptive?
How long does the process take?
What payment options do you accept?
Is crack slab injection better than replacing the concrete?
In most cases, yes. Concrete slab injection (Brisbane or Gold Coast) is far more cost-effective and less disruptive than demolition and replacement, especially for structural elements.
Can you work with commercial remedial contractors or renovation teams?
Definitely. We regularly collaborate with Brisbane and Gold Coast builders, tiling contractors, and house renovators to ensure building waterproofing is done right and on schedule
Are your waterproofing services covered by warranty, and is your team licensed and insured?
Yes—every job we undertake is backed by a workmanship warranty and premium-grade materials with manufacturer guarantees.
Our technicians are fully licensed (QBCC LICENSE : 15438819) and insured, so you can trust that your project is in safe, qualified hands.
We follow all relevant Australian Standards to ensure compliance and long-term protection. All our waterproofing work complies with AS 3740 and AS 4654.2, ensuring long-term performance and regulatory peace of mind.
How much does concrete crack repair cost in Brisbane or the Gold Coast?
The concrete crack injection cost in Brisbane and the Gold Coast typically ranges from $300 to $1,200+, depending on several key factors:
What Affects the Price?
1. Type of Injection
Epoxy injection (for structural cracks): generally more expensive due to material strength and precision or
Polyurethane injection (for water leaks): slightly more affordable and flexible
2. Crack Size & Depth
Small hairline concrete crack repair cost is between $300–$500
Larger or deeper cracks requiring multiple injection points can go $800–$1,200+
3. Location & Accessibility
Basement walls, retaining walls, or hard-to-reach areas may require more labor and equipment
4. Urgency & Site Conditions
Emergency crack repairs or moisture-heavy environments may increase the cost due to prep and drying time.
Always request a site inspection and quote—most reputable concrete crack repair company near you will assess the crack type and offer a detailed breakdown before starting work.
Does crack injection stop "rising damp"?
What are the areas do you service?
Brisbane
- New Farm
- Fortitude Valley
- South Brisbane
- West End
- Paddington
- Indooroopilly
- Toowong
- Ascot
- Clayfield
- Bulimba
- Wilston
- Kelvin Grove
- Carindale
- Chermside
- Woolloongabba
- Holland Park
- St Lucia
- Taringa
- Newmarket
- Red Hill
Gold Coast
- Surfers Paradise
- Broadbeach
- Burleigh Heads
- Miami
- Mermaid Beach
- Robina
- Varsity Lakes
- Southport
- Hope Island
- Helensvale
- Runaway Bay
- Currumbin
- Palm Beach
- Tugun
- Coolangatta
- Upper Coomera
- Coomera
- Arundel
- Benowa
- Ashmore
Ipswich
- Springfield
- Springfield Lakes
- Redbank Plains
- Goodna
- Bellbird Park
- Augustine Heights
- Camira
- Collingwood Park
- Raceview
- Eastern Heights
- Brassall
- Yamanto
- Ripley
- Flinders View
- Leichhardt
- Booval
- North Ipswich
- Silkstone
- Bundamba
- Churchill