# Mainmark > Leaders in Advanced Ground Engineering --- ## Pages - [Australia Page](https://mainmark.co.nz/australia/): Founded In 1989 by Philip Mack following the earthquake that affected Newcastle, Mainmark quickly established itself as a local industry leader in tailored earthquake repair and remediation solutions. - [Pipe Abandonment & Decommissioning](https://mainmark.co.nz/pipe-abandonment-decommissioning-solutions-mainmark/): Mainmark's innovative Terefil® solution for pipe abandonment & decommissioning. Fill abandoned pipelines quickly, safely, & cost-effectively. - [Concrete Rising and Levelling](https://mainmark.co.nz/mainmark-residential-solutions-foundation-repair-for-homes/concrete-rising-and-levelling/): We inject engineered resin to improve your founding soil when you need to re-level your concrete slabs. - [Terefil Raft for Liquefiable Sites](https://mainmark.co.nz/soil-replacement/gravel-raft-liquefaction/): Terefil is used to create a lightweight cellular concrete raft prior to building construction. Save on excavation time and disposal costs - [Enquiry Form](https://mainmark.co.nz/enquiry-form/): Submit your enquiry using our online form. Include a brief message about the type of foundation issues you are experiencing. - [Liquefaction Mitigation](https://mainmark.co.nz/seismic-strengthening/liquefaction-mitigation/): Teretek resin injection is a ground improvement technology that can be used to mitigate liquefaction with minimal disruptions. - [Manufacturing](https://mainmark.co.nz/industries/manufacturing/): Our teams are experts in helping factory and warehouse owners faced with unlevel buildings and weak ground. - [Soil Replacement](https://mainmark.co.nz/soil-replacement/): Terefil is a Mainmark technology to create a lightweight foamed or cellular concrete. Foamed concrete has found extensive use in construction and civil engineering applications due to being lightweight while still retaining good compressive strength. Terefil is effective for improving ground conditions in areas with soft, compressible soils. - [Terefil Raft](https://mainmark.co.nz/technologies/terefil-raft/): Our team is dedicated to reshaping the future of construction with a new application for our Terefil Cellular Concrete technology - lightweight building rafts. - [Seismic Strengthening](https://mainmark.co.nz/seismic-strengthening/): We have been providing turnkey solutions to secure buildings against future seismic events for over three decades across Australasia and Japan - [Measuring cracks around your home](https://mainmark.co.nz/house-subsidence/measuring-cracks-around-your-home/): Mainmark offers professional solutions for cracked walls, providing quick and cost-effective re-levelling services for house foundations. Get in touch to understand your options and find a long term solution to your structural problems. - [Teretek Resin Injection](https://mainmark.co.nz/technologies/teretek-resin-injection/): Teretek® resin injection is used for ground improvement beneath existing structures. There are two primary applications for the technology, bearing capacity increase and liquefaction mitigation. - [Who we are](https://mainmark.co.nz/who-we-are/): Learn about Mainmark, a leading provider of ground engineering solutions, committed to innovation and sustainability since 1989. - [Commercial Brochures](https://mainmark.co.nz/resources/commercial-brochures/): Explore our collection of commercial brochures focusing on ground improvement. Download resources like "Resin Injection Ground Improvement Research Trials – Avondale and Bexley Red Zone Christchurch," "Use of expanding polyurethane resin to remediate expansive soil foundations," "Structure and properties of expanding polyurethane foam in the context of foundation remediation in expansive soil," and "Resin injection as a ground improvement method." Gain valuable insights for your projects. - [Residential Brochures](https://mainmark.co.nz/resources/residential-brochures/): Explore our residential brochures & ground improvement whitepapers. Download our resources for valuable insights into our solutions. - [Media & Press Releases](https://mainmark.co.nz/resources/media-press-releases/): Explore Mainmark's media press releases, covering company milestones, project successes, and industry advancements in ground engineering. - [Slab Jacking and Concrete Slabjack](https://mainmark.co.nz/slab-jacking-and-concrete-slabjack/): Our level correction methods can cater to any building size, from homes and driveways to warehouses and transport yards, and are non-invasive, cost-effective, time-efficient, with minimal disruption to the occupants. - [Terefil®](https://mainmark.co.nz/technologies/terefil/): Explore Terefil® technology for lightweight cellular concrete in soil replacement, void filling, and pipe abandonment. Talk to our experts about your project. - [Void Filling](https://mainmark.co.nz/void-filling/): Mainmark offers comprehensive void filling solutions for diverse market sectors, using specialised chemical or cementitious grouts. - [Ground Improvement](https://mainmark.co.nz/ground-improvement/): We provide advanced ground improvement solutions to enhance soil properties, improve load-bearing capacity, & ensure foundation safety. - [Re-levelling](https://mainmark.co.nz/re-levelling/): Discover Mainmark's Teretek® & JOG technologies for non-invasive, cost-effective building re-levelling solutions. - [Awards](https://mainmark.co.nz/who-are-we/awards/): Mainmark is proud to be recognised as a global leader in ground engineering solutions. Find out how Mainmark New Zealand can assist. - [Teretek®](https://mainmark.co.nz/technologies/teretek/): Explore Teretek® resin injection for precise ground improvement. Enhance bearing capacity & mitigate liquefaction. - [JOG Computer Controlled Grouting](https://mainmark.co.nz/technologies/jog-computer-controlled-grouting/): Explore Mainmark's JOG technology, a state-of-the-art, computer-controlled grout injection system for precise re-levelling in buildings - [Careers](https://mainmark.co.nz/who-are-we/careers/): Join Mainmark, an industry leader in ground engineering. Work with talented professionals and drive future innovations. Explore our vacancies - [Commercial FAQ's](https://mainmark.co.nz/resources/faqs/): Find answers to common questions about Mainmark's ground engineering solutions and services here. - [Health, Safety, Environment & Quality](https://mainmark.co.nz/who-are-we/health-safety-environment-quality/): Our robust Health, Safety, Environment, and Quality (HSE&Q) Management System ensures we effectively manage risks across all operations. - [Commercial Solutions](https://mainmark.co.nz/commercial-solutions/): Mainmark offers specialised ground engineering solutions for commercial projects, ensuring stability and longevity for infrastructure. - [Residential Solutions](https://mainmark.co.nz/residential-solutions/): Explore Mainmark's comprehensive residential solutions, addressing subsidence, void filling, and structural repair with innovative techniques - [Heritage](https://mainmark.co.nz/industries/heritage-commercial/): Mainmark specialises in re-levelling, re-supporting, and strengthening heritage buildings with a deep understanding and respect for their historical and architectural significance. - [Utilities](https://mainmark.co.nz/industries/utilities/): Discover how Mainmark utilises proven ground engineering and asset rehabilitation techniques to help extend the lifespan of utilities. We specialise in remediating assets for electricity, gas, waste management, telecommunication providers, and water authorities. Cost-effective repairs and solutions to keep vital infrastructure running smoothly. - [Warehouses & Distribution](https://mainmark.co.nz/industries/factories-warehouses/): Mainmark offers specialised ground engineering solutions for factories and warehouses, ensuring operational continuity and safety. - [Earthquake Damage & Remediation](https://mainmark.co.nz/house-subsidence/earthquake-damage-remediation/): Mainmark provides advanced earthquake remediation, strengthening foundations and mitigating liquefaction. Trusted solutions for homes and buildings. - [Slab Lifting](https://mainmark.co.nz/re-levelling/slab-lifting/): Discover Mainmark's slab lifting solutions, resolving issues with sunken concrete and uneven floors in commercial and residential properties. - [House Underpinning Repair](https://mainmark.co.nz/house-subsidence/house-underpinning-repair/): Discover the benefits of Teretek® resin injection for house underpinning. A quick, non-invasive method to strengthen foundations. - [Foundation Repair for Unlevel Buildings](https://mainmark.co.nz/house-subsidence/foundation-repair/): Our professional team of foundation repair experts provide fast, cost-effective, and non-invasive solutions for unlevel buildings. - [Cracked Walls](https://mainmark.co.nz/house-subsidence/cracked-walls/): Learn when wall cracks indicate structural problems, their causes, and effective solutions like Mainmark's Teretek® resin injection - [House Subsidence Repair](https://mainmark.co.nz/house-subsidence/): Ground instability causes subsidence and, often, the damage can seem to be reversed as the ground shifts back and forth over time. We offer Subsidence reapir - [Jammed Doors & Sticking Windows](https://mainmark.co.nz/house-subsidence/jammed-doors-sticking-windows/): Experiencing jammed doors or sticking windows in your home? Don't wait! Get professional diagnosis and subsidence solutions. Contact us today! - [Rail](https://mainmark.co.nz/industries/rail/): Mainmark’s cutting-edge technologies offer rapid, non-disruptive, and cost-effective methods to re-level rail infrastructure, strengthen subgrade soils, and address structural challenges. - [Roads & Bridges](https://mainmark.co.nz/industries/roads-bridges/): Mainmark provides subsidence solutions for roads, bridges, and culverts. Improve bearing capacity, fill voids, and raise pavements without costly closures - [About Mainmark](https://mainmark.co.nz/who-are-we/about-mainmark/): Discover Mainmark New Zealand, industry leaders since 1989 in re-levelling, ground improvement, and void-filling solutions. - [Sinking Floors & Slabs](https://mainmark.co.nz/house-subsidence/sinking-floors-concrete/): Discover Mainmark's non-invasive, cost-effective solutions for sinking floors and slabs. Raise, re-level, and support your home quickly. - [Contact Us](https://mainmark.co.nz/contact-us/): Contact Mainmark for expert advice on ground engineering solutions tailored to your commercial or residential project needs. Call 0800 873 835 - [Permeation Grouting](https://mainmark.co.nz/ground-improvement/permeation-grouting/): A Non-Disruptive Alternative To Traditional Underpinning in Sandy SoilsExplore the precision of Mainmark's permeation grouting technique. - [Our Team](https://mainmark.co.nz/who-are-we/our-team/): Meet Mainmark's expert leadership team, driving innovation in ground engineering and asset preservation with global reach and local expertise - [Home](https://mainmark.co.nz/): Mainmark is a global leader, with local expertise in ground engineering and asset preservation across New Zealand. --- ## Projects - [Ground Improvement for Historic Waikato Regional Theatre](https://mainmark.co.nz/projects/ground-improvement-for-historic-waikato-regional-theatre/): Mainmark's Teretek ground improvement was chosen to support extensive development of the surrounding area, while preserving a neoclassical facade from the 1920s. - [Power Station Floor Re-supported](https://mainmark.co.nz/projects/power-station-floor-re-supported/): Without interruption to the operations of the power station, the reinforced concrete floor was fully re- supported and under-sealed against further erosion. - [Fire Station Driveway Subsidence Remediated](https://mainmark.co.nz/projects/fire-station-driveway-subsidence-remediated/): This fire station located in southern Canterbury had experienced subsidence from the weight of fire trucks driving over the slab for many years. Find out more! - [Ground Improvement at Poverty Bay Rugby Club](https://mainmark.co.nz/projects/ground-improvement-at-poverty-bay-rugby-club/): Following fundraising from the community and sponsors, the club invested in redeveloping the grandstand overlooking Rugby Park. - [Hamilton Yacht Pump Station Water Mitigation](https://mainmark.co.nz/projects/hamilton-yacht-pump-station-water-mitigation/): An issue had arisen within the wastewater system at Hamilton Yacht Club, located on the shore of Hamilton Lake. - [Tip Top Ice Cream Void Fill and Re-Level Project](https://mainmark.co.nz/projects/tip-top-ice-cream-void-fill-and-re-level-project/): Mainmark was able to provide both a cost-effective and timely solution for the client. A total lift of 180mm was achieved, across a space measuring 200m² - [Redevelopment of Wainuiomata High School using Terefil Cellular Concrete](https://mainmark.co.nz/projects/redevelopment-of-wainuiomata-high-school-using-terefil-cellular-concrete/): The lightweight nature of Terefil meant a reduced weight on the underlying soil, allowing for new school buildings to be added to the site. - [Mainmark fills Nelson culvert no longer in use](https://mainmark.co.nz/projects/mainmark-fills-nelson-culvert-no-longer-in-use/): The structure and location of the culvert presented a unique engineering challenge, so Downer, reached out to the team at Mainmark. - [Shopping & Office Complex Re-levelled](https://mainmark.co.nz/projects/shopping-office-complex-re-levelled/): Shopping & Office Complex Re-levelled by Mainmark New Zealand. Find out more! - [JOG Computer-Controlled Grouting Re-levels Multi-Storey Apartment Building in Christchurch](https://mainmark.co.nz/projects/jog-computer-controlled-grouting-re-levels-multi-storey-apartment-building-in-christchurch/): JOG Computer-Controlled Grouting Re-levels Multi-Storey Apartment Building in Christchurch. Find out more! - [Commercial Building Subsidence Remediated](https://mainmark.co.nz/projects/commercial-building-subsidence-remediated/): Commercial Building Subsidence Remediated in New Zealand. Find out more about Mainmark and how they can assist. - [Residence Re-levelled by JOG & USL](https://mainmark.co.nz/projects/residence-re-levelled-by-jog-usl/): This residential property was located in one the areas of Christchurch hardest hit by the earthquakes of 2010-2011. The foundation soil was mainly non- cohesive silty-sand and the watertable in the area was generally just a metre or less below ground level. - [Multi Story Building Re-levelled by JOG](https://mainmark.co.nz/projects/multi-story-building-re-levelled-by-jog/): Multi Story Building Re-levelled by JOG. Find out more at Mainmark New Zealand. Find out more at Mainmark New Zealand - [Waste-water Pipeline filled with Benefil](https://mainmark.co.nz/projects/waste-water-pipeline-filled-with-benefil/): Waste-water Pipeline filled with Benefil. Find out more about Mainmark New Zealand. See how we can assist with your issues. - [Storm-water Pipeline filled with Benefil](https://mainmark.co.nz/projects/storm-water-pipeline-filled-with-benefil/): Using Benefil light-weight engineering filler grout, we completed the project for WaterCare Services - [School Building Foundations Strengthened](https://mainmark.co.nz/projects/school-building-foundations-strengthened/): School Building Foundations Strengthened by Mainmark. Find out more at Mainmark New Zealand and how we can assist with your Foundations issues. - [Ground strengthened and building re-levelled at large shopping centre](https://mainmark.co.nz/projects/ground-strengthened-and-building-re-levelled-at-large-shopping-centre/): Northwood Supa Centa in Christchurch is home to several ‘big brand’ retailers. The centre experienced liquefaction-induced ground deformations following the Christchurch Earthquakes - [Teretek® Used to Re-level Department Store Floors](https://mainmark.co.nz/projects/teretek-used-to-re-level-department-store-floors/): Teretek® Used to Re-level Department Store Floors in New Zealand. Find out more at Mainmark New Zealand and how we can assist. - [Teretek® Re-levels Busy Transport Yard](https://mainmark.co.nz/projects/teretek-re-levels-busy-transport-yard/): Teretek® Re-levels Busy Transport Yard in New Zealand. Find out more about how Mainmark could assist. - [Teretek® Brings Turangi Home Back to Level Despite Underfloor Heating Challenge](https://mainmark.co.nz/projects/teretek-brings-turangi-home-back-to-level-despite-underfloor-heating-challenge/): A residential property on a sloping block in remote Omori, Turangi near Lake Taupo in New Zealand’s North Island, experienced subsidence due to voids under the slab. - [Mainmark Protects Heritage Listed Auckland Building with Continuous Monitoring](https://mainmark.co.nz/projects/straam-protects-heritage-listed-auckland-building-with-continuous-monitoring/): The heritage Britomart Hotel (known as The White Rabbit), is a two-storey, unreinforced, bluestone masonry structure and its overall condition was poor due to its age. - [Mainmark raises and re-levels home in Upper Hutt](https://mainmark.co.nz/projects/teretek-raises-and-re-levels-home-in-upper-hutt/): When the glass sliding door of a family home in Upper Hutt, New Zealand, became misaligned, the homeowner suspected it was due to ground subsidence as the family home was built on a steep slope. A subsequent ground engineering report pointed to poor localised soil bearing capacity which was most likely caused by an ancient waterway. - [Mainmark Fills Voids and Strengthens Ground Under a Paraparaumu Beach Home](https://mainmark.co.nz/projects/teretek-fills-voids-and-strengthens-ground-under-a-paraparaumu-beach-home/): A large family home in Paraparaumu Beach, near Wellington, was experiencing significant subsidence due to suspected voids beneath the concrete slab. The single- storey, brick veneer house, built in 1989, showed signs of damage that included numerous internal cracks and misalignment of doors and windows. - [Large Christchurch House Re-levelled by JOG](https://mainmark.co.nz/projects/large-house-re-levelled-by-jog-and-uretek-resin/): This large residential property in Christchurch was subsided and tilted, due to earthquake liquefaction. With a combination of the JOG computer controlled grout and expanding structural resin injection, the house was back up to level in 18 days. - [Christchurch House Raised 60mm & Re-supported](https://mainmark.co.nz/projects/entire-house-raised-60mm-re-supported/): This large residence in Christchurch suffered differential settlement of an average 55mm from the 2010 & 2011 earthquakes. Set on a raft concrete slab, the whole house had subsided and tilted. - [Cold Storage Facility Re-levelled by JOG](https://mainmark.co.nz/projects/cold-storage-facility-re-levelled-by-jog/): Cold Storage Facility Re-levelled by JOG in New Zealand. Find out more about Mainmark and how we can assist in Relevelling. - [Supermarket Raised 180mm & Re-levelled](https://mainmark.co.nz/projects/supermarket-raised-180mm-re-levelled/): Supermarket in New Zealand Raised 180mm & Re-levelled by Mainmark. Find out more at Mainmark New Zealand and how we can assist. - [Large Building Re-levelled by JOG & UDI](https://mainmark.co.nz/projects/large-building-re-levelled-by-jog-udi/): This two-storey commercial building with a footprint of 510m² had walls built of precast tilt-panels and had suffered significant earthquake subsidence.In three weeks, Mainmark rectified the settlement, by applying JOG integrated computer grouting and injections of Uretek expanding structural resins. - [3-Storey Home Unit Block Re-levelled](https://mainmark.co.nz/projects/3-storey-home-unit-block-re-levelled/): After purchasing an iconic eight-storey residential apartment building in Christchurch, new owners KCRB Ltd undertook seismic strengthening through ground remediation works. - [Warehouse Earthquake Damage Remediated](https://mainmark.co.nz/projects/warehouse-earthquake-damage-remediated/): Warehouse Earthquake Damage Remediated by Mainmark New Zealand. Find out more at Mainmark New Zealand and how we can assist. - [Apartment Building Subsidence Remediated](https://mainmark.co.nz/projects/apartment-building-subsidence-remediated/): Apartment Building Subsidence Fixed by Mainmark New Zealand. Find out more and learn how we can assist! - [Warehouse Floor Raised and Re-levelled](https://mainmark.co.nz/projects/warehouse-floor-raised-and-re-levelled/): Warehouse floor raised and re-levelled by Mainmark New Zealand. Find out more! - [House and Garage Lifted and Re-levelled](https://mainmark.co.nz/projects/house-and-garage-lifted-and-re-levelled/): House and Garage Lifted and Re-levelled by Mainmark. Find out more and enquiry how we can help! - [Concrete Slab Beneath Tank Re-levelled in Lyttelton](https://mainmark.co.nz/projects/concrete-slab-on-ground-tank-re-levelled/): Uretek Deep-Injection foundation treatment was used to raise and re-level a concrete slab. This was beneath bitumen tanks located at a local farm in Lyttleton, near Christchurch. This was required to rectify earthquake damage. - [Christchurch House Floor Raised and Re-levelled](https://mainmark.co.nz/projects/house-floor-raised-and-re-levelled/): This building had just been completed when an earthquake struck. There was subsidence along the 25 lineal metres of its back wall with the drop ranging from 24mm to 100mm. Also affected by the earthquake were areas in the centre of the slab floor. - [Thai Factory Canteen Floor Re-levelled](https://mainmark.co.nz/projects/thai-factory-canteen-floor-re-levelled/): The problem was that this factory canteen had subsided due to weak sub-base soil. The consequent subsidence had created dangerous trip hazards at several locations and had fractured many floor tiles. - [Teretek® Provides Ground Improvement and Reduces Lateral Spreading at Christchurch Residence](https://mainmark.co.nz/projects/grout-injections-improve-earthquake-resilience-for-christchurch-apartment-building-2/): A two-storey house in Christchurch suffered structural damage caused by soil liquefaction following earthquake events in 2011. - [Grout injections Improve Earthquake Resilience For Christchurch Apartment Building](https://mainmark.co.nz/projects/grout-injections-improve-earthquake-resilience-for-christchurch-apartment-building/): Grout injections Improve Earthquake Resilience in Building. Find out more about Mainmark - [Resin Injection Used to Increase Liquefaction Resistance at O’Connells Shopping Complex ](https://mainmark.co.nz/projects/resin-injection-queenstown/): O’Connells, a large retail, dining and office complex in Queenstown was undergoing a multi-million dollar redevelopment - [ Water Ingress in Building Basement Eliminated with Acrylic Gel](https://mainmark.co.nz/projects/water-ingress-in-building-basement-eliminated-with-acrylic-gel/): A commercial property under construction in Wollongong was experiencing water ingress in the basement, primarily caused by the high water table located approximately 2m above the basement slab. - [Art Gallery Re-supported and Re-levelled](https://mainmark.co.nz/projects/art-gallery-re-supported-and-re-levelled/): The world-class, modern Christchurch Art Gallery Christchurch Art Gallery Te Puna o Waiwhetū’ was badly shaken by the earthquakes that hit New Zealand’s South Island in 2010 and 2011. - [Decommissioning a Water Main Pipe with Terefil®](https://mainmark.co.nz/projects/decommissioning-a-water-main-pipe-with-terefil/): To safely decommission the ageing water main pipe without disrupting a local school or private property owners, Mainmark used a pressure grouting technique with its proprietary Terefi l® cementitious grout. - [Filter Ponds and Clarifier Tank at Glen Innes Water Treatment Plant Re-lined](https://mainmark.co.nz/projects/filter-ponds-and-clarifier-tank-at-glen-innes-water-treatment-plant-re-lined/): Mainmark delivered a long-term asset preservation solution for a fresh water treatment plant at Glen Innes, New South Wales, with the rectification of linings for three filter ponds and a clarifier tank. --- ## News - [Mainmark appoints Peter Bierton as new CEO](https://mainmark.co.nz/news/mainmark-appoints-peter-bierton-as-new-ceo/): The Mainmark Board of Directors is pleased to announce the appointment of Peter Bierton as the new Chief Executive Officer, commencing on Monday, 2nd June 2025. - [Concrete Underpinning vs Resin Injection – The Differences](https://mainmark.co.nz/news/concrete-underpinning-vs-resin-injection-the-differences/): Concrete underpinning refers to the traditional way of underpinning which involves excavating. Resin injection refers to a more modern way of underpinning concrete by injecting a specialiSed expanding resin. - [5 reasons to invest in your property’s foundations before selling your home](https://mainmark.co.nz/news/5-reasons-to-invest-in-your-property/): Whether you're selling up or settling in, the foundations of your home matter. Build buyer confidence and appeal, avoid emergency repairs, and take advantage of non-disruptive solutions. - [How trees impact ground conditions and building foundations](https://mainmark.co.nz/news/how-trees-impact-ground-conditions-and-building-foundations/): If you’re seeing cracks, misaligned doors, or other signs of foundation movement, it’s important to consult with a professional - [Preventing and treating voids under houses, driveways and footpaths](https://mainmark.co.nz/news/news/treating-voids-under-homes/): Many residential areas in New Zealand are built on low lying flood plains, making voiding underneath house a common problem for homeowners. - [Have the Auckland floods impacted the foundation of your home?](https://mainmark.co.nz/news/auckland-floods-impacted-your-home-foundation/): If you’ve noticed the signs of subsidence, assessing the extent of the damage and your next steps can be easier than you think. - [Is your rental property out of level?](https://mainmark.co.nz/news/is-your-rental-property-out-of-level/): Fixing subsidence in your rental property doesn’t have to mean putting your tenancies on hold. Whether your rental property foundation has had long term issues, or you noticed changes after a big flood season last year, it’s never too early to remedy subsidence. - [Are unstable foundations affecting your manufacturing business?](https://mainmark.co.nz/news/are-unstable-foundations-affecting-your-manufacturing-business/): Owners in manufacturing and heavy industries will be familiar with the daily wear and tear their facilities experience. Being proactive about the condition of your facilities isn't complicated. The first step is simply noticing the signs that might indicate more serious issues. Mainmark are experts in helping factory and warehouse owners faced with unlevel buildings and weak ground. - [Save time and money with a gravel raft alternative](https://mainmark.co.nz/news/gravel-raft-alternative/): Traditional soil replacement involves removing poor soil and replacing it with gravel fill, or piling — but there’s a more efficient way to do this. Over the last 30 years, developments in cellular concrete technology have revolutionised construction. - [Preserving heritage buildings to keep communities strong](https://mainmark.co.nz/news/preserving-heritage-buildings-to-keep-communities-strong/): As New Zealand's suburbs and cities grow, local governments must prioritise the preservation of heritage-listed buildings - [Remove the stress by repairing your home](https://mainmark.co.nz/news/remove-the-stress-by-repairing-your-home/): When it comes to repairing or renovating homes, nothing halts progress like not knowing where to start. The team at Mainmark has raised, re-levelled and re-supported homes, buildings and structures for over 25 years. - [The use of geophysical testing for Mainmark technologies](https://mainmark.co.nz/news/the-use-of-geophysical-testing-for-mainmark-technologies/): Geophysical testing provides a suite of tools used in geotechnical engineering to identify the soil types present and to analyse their expected behaviour. Mainmark utilises these tests to determine project suitability and design - [The sinkhole phenomenon – what causes them and how are they remediated?](https://mainmark.co.nz/news/the-sinkhole-phenomenon-what-causes-them-and-how-are-they-remediated/): Sinkholes have been known to open up in all manner of locations – beaches and oceans, residential gardens, motorways, even shopping centre carparks. --- ## Landing Pages - [Palmerston North Underpinning](https://mainmark.co.nz/palmerston-north-underpinning/): With a sound knowledge of Palmerston North's unique local conditions, Mainmark utilises its Teretek® engineered resin injection solution to effectively raise, re-level, and re-support footings under a home. - [Dunedin Underpinning](https://mainmark.co.nz/dunedin-underpinning/): With a sound knowledge of Dunedin unique local conditions, Mainmark utilises its Teretek® engineered resin injection solution to effectively raise, re-level, and re-support footings under a home. - [Christchurch Underpinning](https://mainmark.co.nz/christchurch-underpinning/): With a sound knowledge of Christchurch unique local conditions, Mainmark utilises its Teretek® engineered resin injection solution to effectively raise, re-level, and re-support footings under a home. - [Wellington Underpinning](https://mainmark.co.nz/wellington-underpinning/): With a sound knowledge of Wellingtons unique local conditions, Mainmark utilises its Teretek® engineered resin injection solution to effectively raise, re-level, and re-support footings under a home. - [Foundation Maintenance and Footing Performance](https://mainmark.co.nz/foundation-maintenance-and-footing-performance/): Please click the below button to download and read through how to manage your foundation soils, ensure adequate drainage, maintain water services, and remove tree roots. - [Mainmark Wellington](https://mainmark.co.nz/wellington/): Mainmark Wellington has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to Wellington homes. - [Mainmark Auckland](https://mainmark.co.nz/auckland/): Mainmark Auckland has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to Auckland homes. - [Mainmark Christchurch](https://mainmark.co.nz/christchurch/): Mainmark Christchurch has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to Canterbury homes. - [NZ Ground Improvement & Re-levelling for Homes](https://mainmark.co.nz/nz-ground-improvement-re-levelling-for-homes/): 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. - [NZ Uretek® resin injection technologies](https://mainmark.co.nz/nz-uretek-resin-injection-technologies/): In the past Mainmark used the Uretek® resin injection methods. This expanding resin was primarily a slab lifting technology and had been used extensively for raising, re-levelling, re-supporting and strengthening moving and sunken structures on or in the ground. - [NZ Concrete Slab Lifting & Levelling](https://mainmark.co.nz/nz-concrete-slab-lifting-levelling/): Our non-invasive and cost-effective solution is a safe way of re-levelling concrete slabs with soil settlement or subsidence that could otherwise lead to more severe problems and become a safety hazard. - [Back to level](https://mainmark.co.nz/back-to-level/): Get your home back to level and strengthen the ground underneath. We are experts in earthquake remediation having helped thousands of New Zealand buildings get back to level. - [Auckland Underpinning](https://mainmark.co.nz/auckland-underpinning/): With a sound knowledge of Auckland’s unique local conditions, Mainmark utilises its Teretek® engineered resin injection solution to effectively raise, re-level, and re-support footings under a home. - [Commercial Featured Projects](https://mainmark.co.nz/landing-pages/commercial-featured-projects/): Mainmark re-supported the building and then completely re-levelled the structure. Although the gallery was closed to the public since the quakes, it was occupied by the gallery staff and artworks, during the whole project. - [Residential Featured Projects](https://mainmark.co.nz/landing-pages/residential-featured-projects/): One of two residential homes in a duplex property, occupying a 20m high sandstone and siltstone clifftop in Auckland, suffered from severe cracking due to differential ground settlement. --- # # Detailed Content ## Pages --- ## Projects --- ## News --- ## Landing Pages ---