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A Sign Of Subsidence
What does un-level buildings mean?
The appearance of internal or external wall cracks, inability to open and close windows and doors, cracked floors and more can all signal an un-level building.
Once a building becomes unlevel, it is crucial to fix it immediately or risk further damage and potential hazards. This requires foundation repair, footing repairs, and house re-levelling.
Using resin injection ground stabilisation, we improve ground compaction. We can then raise and re-level sunken buildings, adding strength to the ground to support the foundation.
We have successfully raised, re-levelled, and re-supported thousands of homes worldwide.
Fast, cost effective & non-invasive foundation repair
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Residential Re-levelling In Action
Foundation Repair for Un-level Buildings
Before & After Treatment
Houses that need to be re-levelled often develop cracks in walls, sinking floors, sticking windows or jammed doors.
Our innovative solutions are designed to address sinking foundations and cracked walls, ensuring long-lasting stability for your home. Whether it’s a sinking foundation or a cracked wall repair, sinking concrete floor or re-levelling a driveway, we provide tailored services to every job.
We offer a range of underpinning options, including resin injection underpinning and concrete underpinning, to help raise and relevel sunken structures. The cost of underpinning varies depending on factors like the extent of damage and the type of foundation. Our expert team specialises in underpinning footings and crack wall repair, ensuring your home is safe and secure for the future.
*Results may vary depending on site conditions, ground behaviour and specific requirements of each project.
Features & Benefits
Mainmark’s Solutions & Technologies
Fast
Our technologies have fast curing times and treated areas can be used immediately or without the delays compared to traditional repair methods.
Environmentally Inert
Our technologies use an inert material that is non-toxic and does not leach into the environment or affect the treated area.
Non-Invasive
Our solutions are of surgical nature compared to traditional methods.
Cost-Effective
Compared to traditional methods, our solutions are more cost-effective, with minimal disruption to the area.
What causes un-level homes and buildings?
There are many different causes of subsidence and various contributing factors.
All involve some change in the ground, which, in turn, generates movement of the soil.
As well, different types of ground are more affected by different conditions.
When ground has been affected, building subsidence is common. Foundations or footings are no longer fully supported, sinking due to weak ground.
Soil Types
Moisture levels in the soil affect reactive clays as they expand and contract.
Oversaturated clays lose their strength resulting in footing subsidence. In loosely packed soils, such as sand and silt, the fine particales in the soil can wash away causing the footing to settle.
Tree Roots
Neighbouring trees and shrubs absorb water using their roots causing movement in the soil as it soaks up moisture in the ground.
Footing Systems
Poor foundation design or inadequate compaction of soil during construction results in movement of the structure as it settles.
Excess Water
Burst or cracked water pipes including blocked sewage and rain gutters can oversaturate clay soils or wash fine particles from sand and silt soils and cause footings to subside.
Extreme or Seasonal Weather
Natural disasters such as flooding, drought and earthquakes affect soil moisture levels in particular clay resulting in excessive foundation movement.
Renovation or Construction
Vibration caused by nearby construction activity such as drilling or piling, or heavy road traffic causes soil particles to shift and settle, resulting in ground subsidence.
Cheapest method of underpinning a Sinking Foundation
The cost to underpin a footing can vary significantly, and depends on the method adopted, soil condition, accessibility to the failed footing and proximity of other buildings and pavements to the work area.
Traditional underpinning is labour intensive and involves large excavations, so its price does depend on how busy the contractor is. Resin Injection and screw piling have more stable prices.
What is Foundation Repair
Foundation repair is the process of fixing structural issues in the foundation of a building. This is necessary when a foundation settles, cracks, or shifts due to soil movement, water damage, poor construction, or other factors.
Mainmark provides underpinning in, Canberra, Hobart, Townsville NSW, QLD, SA, WA, Tasmania, Victoria plus the major cities of Sydney, Melbourne, Perth, Adelaide, Brisbane, Newcastle
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The Leaders in Foundation Re-levelling
Get a quote
Arrange a site assessment in 3 simple steps:
Step 1
Submit your enquiry using our online form. Include a brief message about the type of foundation issues you are experiencing.
Step 2
Our friendly customer service team will be in touch to schedule a site assessment that suits you.
Step 3
One of the Mainmark experts will visit your home or property, assess the damage, and ascertain the likely cause. They will establish the approach needed, creating a plan specific to the needs of your building and provide you with a detailed quote.
Sinking Foundation Repair FAQs for Australian Homeowners
How do I know if my house has a sinking foundation?
Common signs of a sinking foundation include cracks in walls, uneven or sloping floors, jammed doors, sticking windows, cracked floors and gaps around skirting boards or frames. If these signs are spreading or becoming more noticeable, your home may be affected by foundation movement and should be professionally assessed.
What does it mean if my house feels unlevel?
An unlevel house can mean part of the home has moved because the ground beneath the foundations has weakened, shifted or lost support. This can cause floors to slope, walls to crack and doors or windows to stop working properly. A site assessment can help confirm whether the issue is foundation-related.
Can a sinking house be re-levelled?
Yes. In many cases, a sinking house can be re-levelled by treating the weak ground beneath the foundations and carefully lifting affected areas back towards their correct position. The right repair method depends on the cause of movement, the condition of the home and how much the building has settled.
What causes un-level homes in Australia?
Un-level homes are often caused by changes in the ground beneath the property. Common causes include reactive soils, poor drainage, leaking pipes, erosion, tree roots, drought, heavy rainfall or weak ground beneath the footings. When foundations are no longer properly supported, parts of the house can sink or move unevenly.
Are cracks, sinking floors and sticking doors all signs of foundation movement?
They can be. Cracked walls, sinking floors, jammed doors and sticking windows often appear when a house moves unevenly. One issue on its own may have a simple cause, but several symptoms together can point to foundation movement, subsidence or weak ground beneath the home.
Can Mainmark repair a sinking foundation without major excavation?
In many cases, yes. Mainmark uses resin injection and ground improvement technologies to help re-support weak ground, fill voids and raise affected parts of a sinking foundation. This approach is designed to minimise disruption compared with traditional excavation-based repair methods, depending on the site conditions.
How much does sinking foundation repair cost in Australia?
The cost of sinking foundation repair depends on the size of the affected area, how far the house has moved, site access, ground conditions and the repair method required. A professional assessment is the best way to understand the cause of the movement and receive a tailored recommendation.
How long does it take to fix an unlevel house?
The timeframe depends on the property, the amount of movement and the foundation repair method required. Resin injection solutions can often be completed faster than traditional methods because they involve targeted treatment and minimal excavation. Mainmark can provide clearer timing after inspecting the home and assessing the ground conditions.
Who repairs sinking foundations near me in Australia?
Mainmark provides sinking foundation repair, house re-levelling and ground improvement solutions for homeowners across Australia. If you are searching for help with an unlevel house, sinking floors or foundation movement near you, Mainmark can assess the issue and recommend a practical repair approach for your property.
Why choose Mainmark for sinking foundation repairs?
Mainmark is a specialist ground engineering company with decades of experience helping homeowners repair sinking foundations, unlevel homes and subsidence-related movement. Their team focuses on practical assessments, engineered repair methods and non-invasive technologies designed to address the cause of movement, not just the visible symptoms.
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Mainmark Ground Engineering Pty Ltd
ABN: 51 606 182 503
