Structural Stabilisation Specialists

Wall cracks are often caused by foundation movement rather than problems with the walls themselves. In Australia, reactive clay soils can expand during wet periods and shrink during dry conditions, causing foundations to move. Other common causes include soil settlement, poor drainage, leaking pipes, tree roots, and natural building movement over time.

Yes. However, repairing the wall without addressing the underlying foundation movement usually provides only a temporary cosmetic fix.

If the cracks have been caused by foundation settlement or ground movement, the foundations should first be stabilised using an engineered solution such as polyurethane resin injection. Once the structure has been stabilised, cosmetic or structural wall repairs can be completed with greater confidence that the cracks are less likely to return. Rectify focuses on fixing the cause of the problem—not just the visible symptoms.

Foundation settlement occurs when the soil beneath a building compresses, weakens, or shifts, causing parts of the structure to move downward. Settlement may occur gradually over many years or develop more rapidly due to changing ground conditions.

Common signs include wall cracks, uneven floors, sticking doors and windows, gaps around frames, or sinking concrete slabs. Early diagnosis is important because addressing foundation movement sooner can help minimise further structural damage and reduce repair costs.

Polyurethane resin injection is an advanced, non-invasive ground engineering solution used to stabilise foundations and improve weak ground conditions without major excavation.

Small injection points are created in the affected area, allowing engineered resin to be injected beneath the structure. As the resin expands, it fills underground voids, compacts loose soil, strengthens the supporting ground, and can gently re-level settled foundations or concrete slabs. The process is carefully monitored throughout the installation to achieve precise, controlled results while minimising disruption to your property.

Chemical underpinning is designed to provide a long-term foundation stabilisation solution when the underlying cause of the movement has been correctly identified and treated.

The engineered polyurethane resin used by Rectify is moisture resistant, durable, and designed to maintain its structural properties underground. While no repair method can prevent future issues caused by new external factors such as major drainage failures or significant changes in site conditions, properly engineered resin injection provides long-lasting support for foundations and ground improvement.

Foundation repair costs vary because every property is different. Pricing depends on factors such as the extent of the movement, soil conditions, accessibility, building type, and the repair solution required.

Following a professional structural assessment, Rectify provides a tailored recommendation and detailed scope of works based on your property's specific conditions. This ensures you receive the most appropriate and cost-effective solution rather than a one-size-fits-all repair.

Yes. Many sunken concrete slabs, driveways, footpaths, warehouse floors, factory slabs, and other paved surfaces can be successfully re-levelled using polyurethane resin injection.

Rather than removing and replacing the existing concrete, the resin is injected beneath the slab to fill voids, strengthen the supporting soil, and carefully lift the concrete back towards its original level. This method significantly reduces disruption, waste, and downtime compared with traditional replacement methods.

Uneven or sloping floors are commonly caused by movement beneath the building's foundations. As supporting soils shrink, expand, settle, or erode, different sections of the structure can move unevenly.

This movement may be caused by reactive clay soils, poor drainage, underground water movement, leaking pipes, erosion, or inadequate ground compaction during construction. A professional assessment can determine the cause and identify the most suitable foundation repair solution before further movement occurs.

Foundation movement should be assessed as soon as you notice signs such as wall cracks, uneven floors, sticking windows or doors, sinking concrete, or visible movement around your property.

Although some movement develops slowly, delaying repairs can allow the problem to worsen over time, potentially leading to more extensive structural damage and higher repair costs. Early intervention helps protect your property and allows the most effective repair solution to be implemented before conditions deteriorate further.

Structural movement is not always immediately dangerous, but it should never be ignored.

Even minor foundation movement can progressively affect the performance of walls, floors, windows, doors, and structural elements if left untreated. A professional inspection can determine whether the movement is normal building settlement, cosmetic in nature, or indicative of a more significant foundation issue requiring remediation. Early assessment provides peace of mind and helps prevent unnecessary structural deterioration.

The duration of underpinning depends on the size of the affected area, the extent of the foundation movement, and the repair method being used.

One of the advantages of polyurethane resin injection is that many residential projects can often be completed within one to two days, with minimal disruption to occupants and no major excavation. Larger commercial, industrial, or infrastructure projects may require additional time depending on the complexity of the works.

Slab lifting is a specialised ground engineering technique used to restore sunken or uneven concrete slabs without removing or replacing the existing concrete.

Rectify uses engineered polyurethane resin injection to fill underground voids, improve soil strength, and carefully lift the slab back towards its original level. Slab lifting is commonly used for residential homes, warehouses, commercial buildings, roads, industrial facilities, and other infrastructure where reducing downtime and disruption is important.

Foundation problems often develop gradually, making early warning signs easy to overlook. Some of the most common indicators include:

Cracks in internal or external walls
Doors or windows becoming difficult to open or close
Uneven or sloping floors
Gaps appearing around windows, doors, or ceilings
Cracked or sinking concrete slabs
Movement in driveways, paths, or surrounding structures
Ongoing structural movement that appears to be worsening

These signs do not always mean major structural failure, but they do indicate that your property should be professionally assessed. Rectify's experienced team can identify the cause of the movement and recommend the most appropriate foundation repair solution before the damage becomes more extensive.