0800 873 835
New Zealand
Commercial solutions
Since 1989, Mainmark has raised, re-levelled and re-supported warehouses, buildings and factories, delivering successful solutions to thousands of properties.
Mainmark has delivered ground engineering solutions to businesses for more than 35 years. Capitalising on this expertise, our latest range of innovative products and advanced solutions provide remediation of assets and structures across the commercial sector.
Mainmark offers advanced, site-specific solutions for revitalising, sealing, protecting and structurally reinforcing ageing or damaged buildings and infrastructure including tunnels, shafts and basements impacted by weak ground and water ingress.
Sectors we service
Warehouses & Distribution
State-of-the-art, non-invasive solutions to ensure productivity is maintained.
Manafacturing
We help maintain the efficiency, safety, and longevity of your facilities — from manufacturing plants to storage buildings, logistics or transport yards.
Utilities
We remediate assets for electricity, gas, waste management and telecommunication providers, as well as water authorities.
Rail
From tracks to railway platforms, train stations, terminals, train yards, level crossing, and bridges, we’ve got you covered.
Mainmark’s specialised
in-house solutions
Ground Improvement
Ground improvement modifies a soil’s properties, improving its load bearing capacity or resilience against liquefaction.
Re-levelling
We re-level buildings that have experienced subsidence, settlement, or other structural issues leading to uneven floors and foundation cracks.
Mainmark’s industry
leading technologies
Teretek®
Our Teretek® technology provides a solution to address subsided structures, improve ground, and fill voids.
Terefil®
Our Terefil® technology provides an advanced lightweight cellular concrete for soil replacement, large void filling, and pipe abandonment.
JOG Computer-Controlled Grouting
Our JOG technology is a state of the art, computer controlled, multipoint injection system.
Permeation Grouting
Permeation grouting is the most widely used pressure grouting technique that stabilises soil prior to excavation or construction.
Projects
Featured
Commercial Projects
Our clients
Testimonial – Redevelopment of Wainuiomata High School using Terefil Cellular Concrete
“Mainmark played a major part in the successful completion of the Redevelopment of Wainuiomata High School carried out over 4 main stages from 2021 to 2024.
The designers picked Terefil (a lightweight cellular concrete) as a substitute for traditional ground improvement methods. The process for installation, and the completion rates that Mainmark were able to produce were very well communicated. The Mainmark team provided an awesome service. Completing the filling operations with an average of 100-130m3/ day as promised, which was largely dependent on the capacity of the local grout supplier. They brought plenty of experience to the table and did everything that they said they would.
Overall, Naylor Love were impressed. Terefil is a self-levelling and self-compacting product, making it easy to meet the level requirements through the raft construction, also the final site level. Mainmark’s quality assurance measures also ensured that the specified strength and compaction requirements of the raft was consistently achieved throughout the project. The results of which were clearly communicated through to Naylor Love in a timely fashion throughout the construction.
We were very happy with both the team on site and the team behind the scenes and wouldn’t hesitate to recommend them for future projects.”
James Prestney
Quantity Surveyor Team Leader at Naylor Love
Need help?
Need help with a project? Contact us
© 2025 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.
Mainmark Ground Engineering (NZ) Ltd
