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    Problems We Solve

    We Solve Problems To Protect Your Asset

    Overview

    Residential Problems We Solve

    Since 1989, Mainmark has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to thousands of properties.

    Our ground improvement and level correction methods can address foundation subsidence and are effective for helping to fix cracks in walls or re-level sunken floors in homes of any size. Our solutions are also used for slab lifting foundation slabs and large driveways.

    Problems We Solve
    For Our Clients

    Cracked Walls

    Fast, cost-effective and non-invasive subsidence solution to fix cracked walls.

    Sinking Floors & Slabs

    Fast, clean and non-invasive lifting of sinking floors and concrete slabs.

    Jammed Doors or Windows

    Our solutions are more cost-effective, with minimal disruption to the area.

    Out of Level Concrete

    We offer the most advanced house re-levelling and underpinning technology in the market.

    Earthquake Damage

    The world’s most advanced earthquake remediation, liquefaction mitigation and ground strengthening technologies.

    Underpinning Repair

    Resin Injection – the modern alternative to traditional underpinning.

    Residential Subsidence Repair

    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.

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    Need help with a project? Contact us today.

    Mainmark

    © 2026 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

    ISO 9001
    ISO 14001
    ISO 45001

    Solutions

    Ground Improvement

    Subsidence Repair

    Re-Levelling

    Void Filling

    Slab Lifting

    Crack Wall Repair

    Sinking Floors

    Sinking Foundation Repair

    Underpinning Repairs

    Locations

    Adelaide

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    Locations
    Mainmark Sydney

    169 Sailors Bay Rd, Northbridge NSW 2063

     

    Mainmark Melbourne

    Unit 8, 33 Rosalie Street, Springvale VIC 3171

    Mainmark South Australia

    19 Heath St, Lonsdale SA 5160

    Mainmark Queensland

    20 Computer Road, Yatala QLD 4207

    Mainmark Perth

    115 Excellence Dr, Wangara WA 6065

    Mainmark Tasmania

     4/11 McRorie Court Cambridge TAS 7170

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