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Concrete Crack Repair

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Understanding Foundation Cracks

Underpinning is your trusted partner for concrete crack repair, cement crack repair and concrete crack filler services in Brisbane and the Gold Coast. We specialise in residential and commercial concrete crack repairs, utilising advanced methods and top-tier products to ensure an effective, long term solution for your property.

Cracks in your concrete walls or foundations are often caused by a loss of load-bearing pressure. The footings and foundations of a building rely on this pressure for support, and any compromise can lead to cracks, jeopardising the stability of your property. Underpinning can stabilise your foundation, protecting your property from further damage.

Engineer from Underpinning inspecting cracks in concrete foundations of a home in Brisbane
Underpinning team member carrying out concrete crack repair on the foundations of a home in the Gold Coast
Concrete wall with no cracks showing after concrete crack repairs have been carried out

Why Do Foundations Crack?

Foundations, while resilient, are highly dependent on the stability of the ground beneath them. Changes or movements in this ground, known as subsidence, can force the foundation to crack. Common causes of ground movement include:

  • Un-compacted soils.
  • Reactive clay soils.
  • Soil erosion.
  • Insufficient drainage.
  • Poor plumbing serviceability.
  • Extreme weather conditions (e.g., stormwater flooding, extreme heat).
  • Nearby construction and excavation.
  • Excessive forces exceeding foundation design limits.

Signs of Foundation Cracks

Be alert for the following signs that indicate foundation issues:

  • Cracks in internal or exterior walls.
  • Cracks above door frames and windows.
  • Doors getting jammed against the floor or frame.
  • Floors that slump or spring when stepped on.
  • Gaps between skirting boards and the floor.

Cracked walls, ceilings, and sinking floors are often the result of compromised foundations. If you’re concerned about foundation cracks due to subsidence or settlement, the well-being of your entire property could be at risk.

Our Concrete Crack Repair Methods

At Underpinning, we employ a resin injection method to fix cracked foundations, which is more cost-effective and less intrusive than traditional underpinning. This method involves consolidating and lifting your foundation, re-levelling, and re-supporting footings back to their original state, as conditions allow.

A Long Terms Solution for Foundation Cracks

We offer a durable solution for foundation cracks using the best chemical resin designed, made, and certified to Australian standards. Our process involves injecting resin at different depths to support existing footings and increase the load-bearing capacity of the surrounding soils.

  • STEP BY STEP

Our Process

Step 1

Prepare

Our experts drill a series of tiny holes in the affected area.

Step 2

Inject

We inject our specially formulated polyurethane resin.

Step 3

Expand

The resin fills the voids and hardens instantly, compacting the ground. The area is instantly reinforced and re-levelled if required.

Sea Wall & Retaining Wall Repairs

Underpinning has a proactive approach to the long-term problem of failing Sea Walls and Retaining Walls. We have researched, trialed, and invested heavily in providing the latest technologies in revetment wall repairs and believe our construction techniques will lead to a fresh cost-effective solution to this looming problem.

Contact our office for a complete run-down on our Proprietary Scanning, Anchoring, and Resin Systems.