A Complete Guide to Concrete Crack Repair | Concrete Cutting Australia
- michael729435
- Jun 1
- 3 min read
Cracks in concrete are more than just an eyesore—they can indicate deeper structural issues and lead to costly damage if left untreated. At Concrete Cutting Australia, we understand the importance of identifying, assessing, and repairing concrete cracks early to protect the integrity and safety of your surfaces.
In this blog post, we’ll walk you through the types of concrete cracks, the causes behind them, and the most effective methods of concrete crack repair available in Australia today.
What Causes Concrete Cracks?
Concrete is durable, but it's not invincible. Over time, various factors can cause it to crack:
Shrinkage during curing
Ground movement or settlement
Heavy loads or impact
Weather changes (cold and heat cycles)
Poor construction practices
Corrosion of reinforcement (in reinforced slabs)
Understanding the root cause of a crack is essential to applying the right repair method.
Types of Concrete Cracks
Different types of cracks require different treatments:
Hairline Cracks: Thin, surface-level cracks caused by shrinkage or temperature changes.
Structural Cracks: Wider cracks that may indicate movement or load-bearing failure.
Vertical or Diagonal Cracks: Often seen in walls and may signal foundation movement.
Cracks with Spalling: Surface deterioration around the crack, common in aged or weather-exposed concrete.
At Concrete Cutting Australia, we always assess the crack type and severity before recommending a solution.
Concrete Crack Repair Methods
1. Epoxy Injection
For structural cracks, epoxy injection seals the gap and restores strength. This method bonds the concrete back together, preventing water infiltration and further damage.
Ideal for cracks wider than 0.2mm
Suitable for load-bearing structures like foundations and beams
2. Polyurethane Foam Injection
This flexible repair option is used for sealing leaking or active cracks. It expands within the crack, stopping moisture and movement.
Best for non-structural cracks
Excellent waterproofing properties
3. Routing and Sealing
This method involves widening the crack with a grinder and then filling it with an appropriate sealant. It’s a common technique for driveways, floors, and slabs.
Cost-effective for surface-level cracks
Prevents dirt, water, and chemicals from entering
4. Concrete Patching
For wide surface cracks or spalled areas, patching involves removing loose material and filling the crack with mortar or concrete.
Used for cosmetic and structural repairs
May require grinding or resurfacing afterward
5. Stitching
For severe structural damage, stitching involves drilling holes on both sides of the crack and inserting steel staples (stitches) to hold the concrete together.
Provides long-term structural support
Often used alongside epoxy injection
Why Concrete Crack Repair Is Important
Ignoring cracks can lead to:
Further structural damage
Water ingress and corrosion
Trip hazards and safety risks
Decreased property value
By repairing cracks early, you save time, money, and avoid costly full slab replacement.
Professional Crack Repair Services in Australia
At Concrete Cutting Australia, we offer expert crack assessment and repair services using the most advanced techniques and materials. Whether it’s your driveway, warehouse floor, or a commercial structure, we ensure a long-lasting and professional result.
How Much Does Concrete Crack Repair Cost?
Prices vary based on the repair method and extent of the damage:
Small surface crack sealing: $40 – $140+ per linear meter
Epoxy or polyurethane injection: $50 – $200+ per linear meter
Structural crack repair or stitching: $50 – $200+ per linear meter
We provide free, no-obligation quotes and tailor our solutions to your needs and budget.
Contact Concrete Cutting Australia Today
Have a cracked concrete surface that needs attention? Don’t wait until it worsens. Contact Concrete Cutting Australia for professional, reliable, and cost-effective concrete crack repair services.
📞 Call us today on 0419 669 292
📧 Email us at info@concretecuttingaustralia.com.au
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