City roads

Mainmark Update: COVID-19 (Coronavirus)

Mainmark is continuing to monitor government updates as the impact of the COVID-19 pandemic continues. We are adhering to advice from relevant authorities and are committed to the ongoing health and wellbeing of all our staff and customers. Rest assured that we are still able to assist in reviewing the subsidence problems around your property or home.

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Problems we solve

Finding the best solution for each ground problem requires an experienced and tailored approach.

Icon2_Cracked Walls

Cracked Walls

Solutions for structural damage due to sinking foundations

Icon1_Sinking Floors

Sinking Floors

Solutions for building subsidence

Icon3_Unlevel Buildings

Unlevel Buildings

Solutions for weak ground and subsidence

Icon4_Ground Instability

Weak and Unstable Ground

Solutions for shifting ground or erosion


Holes and Voids

Solutions for cracks, crevices and large voids


Earthquake Damage

Solutions for liquefaction mitigation and ground strengthening

We're happy to have helped

“I can confirm that C__ had a good experience working with Mainmark. The crew were good and experienced. We were briefed as to how they will proceed and were updated periodically. Monitoring around existing asset integrity/damage was good and gave us confidence. S___ signing on site digital and OHS procedures were satisfactory. The 12 mm lift was really amazing to achieve in a safe manner and a further assurance from the crew that a settlement should not happen moving forward was more than assuring.

Back End office support was quite meticulous and prompt. This helped us achieve tight timelines and C__ compliance.”

Madhup, Ballarat, VIC. May 2020

“Just wanted to give you the thumbs up on under pinning the corner of my house.

You, your office staff and the installation crew could not have been any more professional in the way executed the task at hand.

All was carried out with military precession, arriving dead on time keeping me abreast of the procedures and left the site clean and tidy.

I can honestly say job well done and recommend your services to people fearing how modern day underpinning works and is carried out.”

Ian, Clunes, VIC. April 2020

“Great to see you on Tuesday and thank you and S____ and the team for the great job on our foundations. We are really happy with everything.”

Jacinta, Spotswood, VIC. February 2020

“The guys turned up early today (after a warning call that I missed) and got stuck in. Couldn’t hope for a more personable and competent team. They did you proud.

We are very happy with the result. All the cracks closed up either a little or a lot. I’m particularly please with the cracks in side the laundry. the attached pics don’t quite do them justice because they have closed markedly.

Thanks again.”

Chris, Terrey Hills, NSW. January 2020

“I can only say that we were over satisfied!  The professionalism, communication and courteousness from your staff was second to none.

We could not be happier with the finished result and can now finally commence our restoration works with confidence.”

Jasna & Wes, Keilor, VIC. January 2020

“Thanks for helping us to fix the foundation problem and the teams was great to work with.”

Jacky, Dannemora, NZ. December 2019
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Latest blog posts

Insights from Coffey principal engineering geologist, Nick Clendon

Nick Clendon is the principal engineering geologist and team leader for the Wellington office at Coffey, a Tetra Tech company, specialising in geotechnical engineering, environmental services and project management services. Last year Mainmark collaborated with Nick on a large project to deliver a seismic strengthening solution for the Seaview Wastewater Treatment Plant. The facility treats

Road damaged by earthquake

The impact of earthquakes in Australia: What Australia can learn from earthquake events in the Pacific region

Planet earth is a living entity that is constantly moving. Many forces impact the earth’s movement; however, ground force is primarily impacted by what’s happening deep within the earth’s core and the tectonic plates that cover the earth’s surface like a crust. The seven major and eight minor tectonic plates are like giant slabs, joining

Mark Sasaki blog Teretek

The science behind Mainmark’s resin injection technology

Polyurethane (PU) resin has been used as an innovative and effective method for re-levelling structures including residential homes for more than 40 years. The idea of using PU resin for ground strengthening was originally introduced by a Scandinavian company to help address ground movement and subsidence that can occur each year due to Europe’s extreme