Since 1989, Mainmark has provided successful ground improvement, level correction, and void filling solutions, addressing subsidence in residential properties.
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Fast, cost effective & non-invasive subsidence solutions to fix cracked walls and cracked bricks
Fast, clean and non-invasive lifting of sinking floors and slabs
Our solutions are more cost-effective, with minimal disruption to the area
We offer the most advanced house re-levelling and underpinning technology in the market
The world’s most advanced earthquake remediation, liquefaction mitigation and ground-strengthening technologies
Resin Injection Underpinning– the modern alternative to traditional underpinning
Ground improvement modifies a soil’s properties, improving its load bearing capacity or resilience against liquefaction
We re-level buildings that have experienced subsidence, settlement, or other structural issues leading to uneven floors and foundation cracks
We can underpin, raise and re-level sinking foundations
Comprehensive void filling solutions for diverse market sectors, using specialised chemical or cementitious grouts
Our non-invasive and cost-effective solution is a safe way of re-levelling concrete slabs with soil settlement or subsidence problems
Mainmark has delivered ground engineering solutions to commercial businesses and properties for 35 years. Capitalising on this expertise and knowledge, our range of innovative products and advanced solutions provide remediation of assets and structures.
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State-of-the-art, non-invasive solutions to ensure productivity is maintained
Address a range of underlying issues impacting buildings and infrastructure due to weak or unstable ground
We remediate assets for electricity, gas, waste management and telecommunication providers, as well as water authorities
Our non-invasive approach is essential when treating these significant and sometimes fragile structures
Ground improvement modifies a soil’s properties, improving its load bearing capacity or resilience against liquefaction
We re-level buildings that have experienced subsidence, settlement, or other structural issues leading to uneven floors and foundation cracks
Our non-invasive and cost-effective solution is a safe way of re-levelling concrete slabs with soil settlement or subsidence problems
Comprehensive void filling solutions for diverse market sectors, using specialised chemical or cementitious grouts
Terefil is a unique, specialist flowable fill material that can fill massive pipelines and concrete culverts quickly and cost-effectively
Our innovative technologies offer advanced site-specific solutions for revitalising ageing or damaged buildings, assets and infrastructure.
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Keeping Australia's roads and bridges operational with minimal disruption
The fast, non-disruptive pavement stabilising solutions for Australia's airports
Re-supporting port terminals and seawalls with minimal disruption to operation whilst prioritising safety
Keeping railways on track with innovative level correction solutions
Ground improvement modifies a soil’s properties, improving its load bearing capacity or resilience against liquefaction
We re-level buildings that have experienced subsidence, settlement, or other structural issues leading to uneven floors and foundation cracks
Our non-invasive and cost-effective solution is a safe way of re-levelling concrete slabs with soil settlement or subsidence problems
Comprehensive void filling solutions for diverse market sectors, using specialised chemical or cementitious grouts
Terefil is a unique, specialist flowable fill material that can fill massive pipelines and concrete culverts quickly and cost-effectively
If you cant find what you’re after please don’t hesitate to contact us.
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Welcome to Mainmark, your trusted re-levelling, slab jacking and slab lifting experts in Australia.
As a leading ground engineering company with a strong local presence, we specialise in commercial, re-levelling, slab jacking and slab lifting.
With over 35 years of experience and a local team based right here in Australia, we deliver personalised solutions tailored to your property.
Our expertise spans both residential and commercial properties, ensuring effective and long-lasting slab lifting solutions for all types of structures.
It may result in fencing off areas, while equipment such as automated forklifts may not be able to function correctly. In the worst case, the sunken areas can become a health and safety risk for employees.
Our non-invasive and cost-effective solutions can raise, re-level and re-support concrete slabs with minimal disruption to business operations.
Correction with Teretek® Resin Injection can be completed within just a few hours rather than days.
As soon as the repair is completed, the area can be re-opened to traffic and full use.
Repairs are performed without the need for excavation, extensive disruption.
Compared to traditional methods, our solutions are more cost-effective.
Slab jacking is a specialised concrete repair technique designed to lift sunken concrete slabs. This process in Adelaide involves pumping a material beneath the slab, which raises it from below.
Also known as “mudjacking” or “pressure grouting,” this method is an effective solution for restoring the level and stability of concrete surfaces.
There are many different causes of subsidence and various contributing factors. All involve some sort of change in the ground, which, in turn, generates movement of the soil.
Tree roots can gradually bulge beneath your concrete, eventually pushing it upward. This can lead to cracks, uneven slabs, and other structural issues.
Another common cause of rising concrete is poor soil conditions. For instance, soils like clay tend to absorb more water than other types of fill material, causing the ground to shift and disrupt the concrete above.
Slab jacking, also known as mud jacking or concrete levelling, is a cost-effective method for raising and strengthening sunken concrete slabs.
In Australia, the cost of slabjacking varies based on factors such as the size of the area, the extent of subsidence, and accessibility.
It’s important to note that slab jacking and slab lifting in Sydney is typically more affordable than replacing the entire concrete slab, often costing about one-third of the replacement price.
Submit your enquiry using our online form. Include a brief message about the type of foundation issues you are experiencing.
Our friendly customer service team will be in touch to schedule a site assessment that suits you.
One of the Mainmark experts will visit your commercial 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.
© 2025 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.
Mainmark Ground Engineering Pty Ltd
ABN: 51 606 182 503
1800 623 312
Australia
