Subsidence

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Empowering Structural Growth

At GeoFix, we go beyond being just a company; we are your trusted partner in geotechnical engineering, delivering excellence throughout New Zealand. Our skilled engineers in Auckland combine local geological expertise with cutting-edge solutions to tackle each project’s unique challenges. Specialising in a wide range of geotech services, from in-depth site assessments to advanced foundation repair, we provide tailored solutions that ensure long-term stability. Whether you’re in Auckland or elsewhere in New Zealand, GeoFix is your go-to expert for reliable geotech engineering. Let us help you build a more stable and resilient future through precision and innovation.

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A home is a valuable asset in terms of money and sentiment. However, as time passes, issues like wall cracks might surface. While minor problems can be easily addressed, subsidence can be a serious matter that requires prompt action.

At Geofix, we specialize in diagnosing and correcting subsidence issues using resin injections, slab jacking, and concrete underpinning techniques. Our aim is to ensure your home remains secure and structurally sound, offering you peace of mind and lasting stability.

Subsidence is the effect of a structure sinking into the ground lower than its original position. It can have several causes, such as water erosion, the presence of vegetation, reactive clay soils, voiding, weak ground or poorly compacted fill, and seismic factors.

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Living in a house with subsidence? Causes of house subsidence

Natural Causes

Quality of the soil (ground)

The natural attributes of soil play a crucial role in causing subsidence. Clays and silts, whether they are moist or dry, tend to expand and contract, making the structures above them susceptible to movement. Soils of gravel and sand are more inclined to subside as they can be easily washed away due to their lack of cohesion. Both of these scenarios can pose a risk to your home’s foundation.

Tree roots

While we all value the advantages of having abundant greenery around our residences, it can increase the risk of subsidence. Tree roots tend to contribute to subsidence by drawing moisture from the soil beneath foundations, leading to shrinkage. Additionally, as tree roots expand underneath a structure, they can also cause it to lift.

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Man-Made Causes

Poor Foundations

When a building’s foundation is poorly designed or constructed, there is an increased chance of subsidence. Foundations lacking the necessary capacity to adequately support the building can lead to or exacerbate subsidence.

Poor Drainage

Ignoring water flows under and around a foundation can cause significant long-term determination, resulting in soil subsidence.

Nearby Construction work

Digging operations can lead to damaging vibration levels and alter the moisture content of the soil, potentially harming adjacent structures and causing ground subsidence.

What We Do

Soil Stabilisation

Strengthening and stabilising soil to prevent shifting and support structural foundations.

Seismic Strengthening

Strengthening structures to improve their resistance and stability during seismic events.

Concrete Releveling

Releveling concrete surfaces to correct unevenness, restore balance, and ensure long-term durability.

Void Filling

Filling voids beneath concrete structures to stabilise and prevent further settlement or collapse.

Seawall Repair

Repairing seawalls to reinforce their structure, prevent erosion, and protect against coastal damage.

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Subsidence

Empowering Structural Growth

Subsidence

Living in a house with subsidence? Causes of house subsidence

Natural Causes

Man-Made Causes