# Mainmark > Leaders in Advanced Ground Engineering --- ## Pages - [Australia](https://mainmark.co.uk/australia/): As Australia's leading ground engineering and asset preservation company, we draw on over three decades of experience and knowledge in leading, developing and delivering the most advanced and accurate ground improvement, re-levelling and void filling solutions. - [Infrastructure Solutions](https://mainmark.co.uk/infrastructure-solutions-2/): Mainmark has developed and delivered advanced infrastructure solutions, including void filling, ground improvement and re-levelling. - [Residential solutions](https://mainmark.co.uk/residential/): Mainmark's ground engineering technologies have been used in many of residential projects, providing effective solutions with minimal disruption. - [Whitepaper 1](https://mainmark.co.uk/resources/white-papers/treating-subsidence-with-geopolymer-solutions/): Mainmark industry leading whitepapers - geotechnical challenges in built environment - [Resources](https://mainmark.co.uk/resources/): Mainmark's resource centre contains information about ground engineering and subsidence, including brochures, white papers and technical downloads. - [Clay shrinkage](https://mainmark.co.uk/subsidence/clay-shrinkage/): Clay shrinkage subsidence occurs as clay-rich soils dry, contract, and cause ground shifts. Mainmark’s non-invasive ground improvement treatments provide an ideal solution for overcoming the impact of clay shrinkage. - [Subsidence survey](https://mainmark.co.uk/subsidence/subsidence-survey/): Subsidence surveys are normally carried out by chartered surveyors. Structural engineers may also provide subsidence surveys and report on their findings. - [Subsidence](https://mainmark.co.uk/subsidence/): Subsidence causes ground beneath buildings to sink. Mainmark repairs house and property subsidence, stabilizing foundations with advanced techniques. - [Re-levelling](https://mainmark.co.uk/re-levelling/): Mainmark's modern, quick and cost-effective options for building and structure re-levelling include resin injection and computer-controlled grouting. - [Slab lifting](https://mainmark.co.uk/slab-lifting/): Mainmark’s modern slab lifting and re-levelling technologies are reliable, quick and cost-effective, minimising disruption on site. - [Underpinning cost](https://mainmark.co.uk/underpinning/underpinning-cost/): While traditional underpinning can be very expensive, Mainmark's modern subsidence remediation methods offer a more cost-effective option. - [Underpinning contractors](https://mainmark.co.uk/underpinning/underpinning-contractors/): While traditional underpinning contractors use disruptive processes, Mainmark offers fast and non-invasive technologies for dealing with subsidence. - [Foundation underpinning](https://mainmark.co.uk/underpinning/foundation-underpinning/): Mainmark offers fast, non-invasive and reliable alternatives to foundation underpinning methods and solutions for residential and commercial buildings. - [Resin injection underpinning](https://mainmark.co.uk/underpinning/resin-injection-underpinning/): With Mainmark’s Teretek® resin injection underpinning alternative, there’s no need for the excavation and digging associated with traditional underpinning. - [Underpinning](https://mainmark.co.uk/underpinning/): Underpinning is the process of strengthening the ground under a structure. Mainmark offer computer-controlled grouting and resin injection underpinning methods. - [Void filling](https://mainmark.co.uk/ground-improvement/void-filling/): Mainmark's void filling solutions include Teretek® resin injection, JOG computer-controlled grouting and Terefil® lightweight cementitious fill - [Sinkhole repair](https://mainmark.co.uk/ground-improvement/sinkhole-repair/): Mainmark’s ground improvement technologies provide swift, reliable and cost-effective sinkhole repair and prevention for a wide range of applications. - [Ground strengthening](https://mainmark.co.uk/ground-improvement/ground-strengthening/): As experts in ground improvement technologies, Mainmark offers ground-strengthening methods that are quick to implement, reliable and cost-effective. - [Slope stabilisation](https://mainmark.co.uk/ground-improvement/slope-stabilisation/): Mainmark’s Teretek® resin injection provides an effective solution for slope stabilisation that can be implemented quickly and with minimal disruption. - [Signs of subsidence](https://mainmark.co.uk/subsidence/signs-of-subsidence/): If you’ve noticed any signs of subsidence, it’s important to get expert advice as soon as possible. Ignoring them will only allow the problem to get worse. - [Subsidence cracks](https://mainmark.co.uk/subsidence/subsidence-cracks/): Subsidence cracks appear in the walls, floor and ceiling of a home and are caused by the movement or shifting of the ground beneath the house’s foundation - [Subsidence costs](https://mainmark.co.uk/subsidence/subsidence-costs/): Depending on the severity of the problem, subsidence costs can vary greatly. Mainmark’s modern techniques may help you save thousands of pounds. - [Foundation subsidence](https://mainmark.co.uk/subsidence/foundation-subsidence/): Foundation subsidence occurs when weak ground cannot support the weight of structures above it. This can cause major property hazards. - [Sinking floors](https://mainmark.co.uk/subsidence/sinking-floors/): Sinking floors can often be a sign of subsidence. Mainmark’s floor re-levelling methods are effective for fixing sinking floors in residential homes. - [Jammed doors and windows](https://mainmark.co.uk/subsidence/jammed-doors-and-windows/): Mainmark’s ground improvement methods are effective for fixing the underlying problems that cause jammed doors and windows. - [Conservatory subsidence](https://mainmark.co.uk/residential/conservatory-subsidence/): Mainmark's conservatory subsidence remediation can be completed in about a day, saving residential homeowners time and money, while minimising disruption. - [Wall underpinning](https://mainmark.co.uk/residential/wall-underpinning/): Traditional wall underpinning isn't the way to deal with subsidence in residential properties. Mainmark’s methods are swift, reliable and cost-effective. - [Bay window subsidence](https://mainmark.co.uk/residential/bay-window-subsidence/): Mainmark offers non-invasive and reliable solutions for bay window subsidence using Teretek® resin injection and JOG computer-controlled grouting. Get your bay window repair now. - [Extension subsidence](https://mainmark.co.uk/residential/extension-subsidence/): Mainmark’s extension house subsidence solutions, Teretek® resin injection, and JOG computer-controlled grouting are quick, reliable and cost-effective. - [Driveway re-levelling](https://mainmark.co.uk/residential/driveway-relevelling/): Mainmark’s driveway re-levelling service is swift, reliable and cost-effective, returning your driveway back to normal as quickly as possible. - [Road subsidence](https://mainmark.co.uk/commercial/road-subsidence/): Mainmark's Teretek® resin Injection can be used to re-level subsided roads, pavements and structures and strengthen subgrade soils. - [Causes of subsidence](https://mainmark.co.uk/subsidence/causes-of-subsidence/): There are many possible causes of subsidence. The most common is moisture loss from the soil, leading to the shrinking of the ground. - [Underpinning a house](https://mainmark.co.uk/underpinning/underpinning-house/): Mainmark's modern subsidence remediation methods offer a quick, non-invasive and reliable alternative to underpinning a house. - [Soil stabilisation](https://mainmark.co.uk/ground-improvement/soil-stabilisation/): Mainmark offers reliable and value-engineered soil stabilisation solutions that will restore structural integrity and safety, and re-level foundations. - [Ground improvement](https://mainmark.co.uk/ground-improvement/): Mainmark's ground improvement methods improve a soil’s performance, increasing load-bearing capacity and providing resilience against liquefaction. - [Case studies](https://mainmark.co.uk/case-studies-2/): Discover real-world solutions and success stories that showcase how Mainmark's innovative approach to ground engineering and asset preservation has made a significant impact in various industries - [Mainmark Technologies](https://mainmark.co.uk/technologies/): Mainmark's cutting-edge ground engineering and subsidence remediation technologies are time-efficient, cost-effective and non-disruptive. - [Who we are](https://mainmark.co.uk/who-we-are/): Mainmark is a pioneer in ground engineering, developing and delivering cutting-edge solutions for re-levelling, ground improvement and void filling. - [Brochures](https://mainmark.co.uk/resources/brochures/): Download and view brochures that provide details and useful information about Mainmark's range of ground engineering and subsidence remediation methods. - [Technical Library](https://mainmark.co.uk/resources/technical-library/): Download and view technical documents that provide details about Mainmark's ground engineering and subsidence remediation methods. - [Privacy Policy](https://mainmark.co.uk/privacy-policy/): Mainmark is a leader in ground engineering services and subsidence remediation. We take the privacy of our clients and website users very seriously. - [Other Technologies](https://mainmark.co.uk/other-technologies/): Throughout its development, Mainmark have worked with international experts on the methodology to test its performance across a wide range of geotechnical conditions. - [Terefil®](https://mainmark.co.uk/technologies/terefil/): Mainmark's Terefil® technology provides an advanced lightweight cellular concrete for soil replacement, large void filling and pipe abandonment. - [Awards](https://mainmark.co.uk/who-we-are/awards/): Mainmark is proud to be a global leader in ground engineering solutions – and our dedication to quality has been recognised with various industry awards. - [Teretek®](https://mainmark.co.uk/technologies/teretek/): Mainmark's geopolymer resin injection technology, Teretek® is a reliable method to improve ground instability and lift & level structures - [JOG Computer Controlled Grouting](https://mainmark.co.uk/technologies/jog-computer-controlled-grouting/): JOG computer-controlled grouting can re-level structures by up to 300 mm, including heritage, multi-storey and residential buildings. - [Careers](https://mainmark.co.uk/who-we-are/careers/): Start your career with Mainmark, an industry leader in ground engineering and asset preservation, and help drive future innovation and technologies. - [Health, Safety, Environment & Quality](https://mainmark.co.uk/who-we-are/health-safety-environment-quality/): Mainmark's robust health, safety, environment and quality management system ensures we effectively manage risk across all of our operations. - [Residential FAQ's](https://mainmark.co.uk/resources/residential-faqs/): Mainmark is an experienced ground engineering and asset presentation company, specialising in ground improvement, level correction and void filling. - [Infrastructure Solutions](https://mainmark.co.uk/infrastructure-solutions-old/): Mainmark has developed and delivered advanced infrastructure solutions, including void filling, ground improvement and re-levelling. - [Commercial Solutions](https://mainmark.co.uk/commercial/): From structural repairs to innovative engineering, Mainmark's ground engineering solutions have been used in a diverse portfolio of commercial projects. - [Heritage building subsidence](https://mainmark.co.uk/commercial/heritage-building-subsidence/): Mainmark has built a reputation in the remediation of heritage building subsidence, helping to ensure the stability of foundations for generations to come. - [Utilities subsidence](https://mainmark.co.uk/commercial/utilities-subsidence/): Mainmark uses proven ground engineering and asset rehabilitation techniques to help asset owners, including local councils, to treat utility subsidence. - [Pipe Abandonment & Decommissioning](https://mainmark.co.uk/ground-improvement/pipe-abandonment-decommissioning/): Mainmark provides fast, cost-effective solutions for pipe abandonment and decommissioning. These permanently seal the pipes and provide void filling. - [Social housing subsidence](https://mainmark.co.uk/commercial/social-housing-subsidence/): As experts in dealing with social housing subsidence, Mainmark offers solutions that get social housing properties back to normal as quickly as possible. - [Warehouse subsidence](https://mainmark.co.uk/commercial/warehouse-subsidence/): Mainmark offers warehouse subsidence treatment and concrete floor re-levelling that is quick and effective, causing minimal operational disruption. - [Cracks in walls](https://mainmark.co.uk/subsidence/cracked-walls/): While cracks in walls are common in buildings, and some are nothing to worry about, others can indicate subsidence, sinking or damaged foundation. - [Harbour subsidence](https://mainmark.co.uk/commercial/harbour-subsidence/): Mainmark's fast and non-disruptive solutions for seawall, port and harbour subsidence, include level correction, ground improvement and void filling. - [Runway subsidence](https://mainmark.co.uk/commercial/runway-subsidence/): Mainmark’s non-disruptive and economical ground improvement solutions can address the challenges of airport runways, taxiways, pavements and buildings. - [Rail subsidence](https://mainmark.co.uk/commercial/rail-subsidence/): Mainmark's Teretek® resin injection can be used to stabilise the railroad tracks and platform structures, requiring no excavations. - [Bridge subsidence](https://mainmark.co.uk/commercial/bridge-subsidence/): Mainmark's Teretek® resin injection is an effective method for addressing load-bearing capacity issues and voiding that can cause bridge subsidence. - [About Mainmark](https://mainmark.co.uk/who-we-are/about-mainmark/): Mainmark provides ground engineering and subsidence solutions across sectors including residential, industrial, commercial and civil engineering. - [Contact Us](https://mainmark.co.uk/who-we-are/contact-us/): To find out more about Mainmark's ground engineering solutions, or to discuss your project requirements, please get in touch. - [Permeation Grouting](https://mainmark.co.uk/technologies/permeation-grouting/): Permeation grouting is a method of stabilising granular soil, providing a quick, cost-effective alternative to piling and traditional underpinning. - [Our Team](https://mainmark.co.uk/who-we-are/our-team/): At the heart of Mainmark's success is a dedicated team of professionals who are revolutionising the ground engineering industry. - [Home](https://mainmark.co.uk/): Mainmark UK specialises in ground engineering, underpinning foundation repair and subsidence using cost-effective and non-invasive techniques. --- ## Case Studies - [Lifting and stabilising subsided warehouse slab](https://mainmark.co.uk/case-studies/lifting-and-stabilising-subsided-warehouse-slab/): Mainmark provides a Geopolymer Injection Solution that can be used used to raise and re-level property that had been affected by subsidence. - [Ground improvement works at a major commercial project in central London](https://mainmark.co.uk/ground-improvement-works-at-a-major-commercial-project-in-cental-london/): Mainmark's Geopolymer Injection Solution for Erosion Control was used at a major commercial project in central London. - [Innovative Geopolymer Injection Solution for Erosion Control](https://mainmark.co.uk/case-studies/rinnovative-geopolymer-injection-solution-for-erosion-control/): Mainmark's non-invasive Innovative Geopolymer Injection Solution for Erosion Control was used to raise and re-level property that had been affected by subsidence. - [Resin injection technology chosen by council as best treatment for subsidence at Dulverton School in Kent](https://mainmark.co.uk/case-studies/resin-injection-chosen-by-council-as-best-treatment-for-subsidence-at-dulverton-school-in-kent/): Resin injection technology from Mainmark chosen by council over traditional methods as best treatment for subsidence at Dulverton School in Kent - [Resin injection technology treats subsidence of Grade II listed bungalows for Birmingham City Council’s social housing refurbishment project](https://mainmark.co.uk/case-studies/resin-injection-treats-subsidence-on-grade-ii-listed-bungalow/): Geopolymer resin injection treats subsidence under 16 Grade II listed bungalows as part of Birmingham City Council’s social housing refurbishment project - [Geopolymer resin injection technology was chosen over deep piling as a solution to treat subsidence of a warehouse in Ireland](https://mainmark.co.uk/case-studies/resin-injection-chosen-over-piling-to-treat-subsidence-in-warehouse/): Why geopolymer resin injection was chosen instead of deep piling to treat subsidence at a commercial warehouse in Ireland. - [Resin injection ground strengthening is a successful alternative to underpinning of historic Grade II listed building in the centre of Chester](https://mainmark.co.uk/case-studies/resin-injection-treats-subsidence-in-historic-listed-building/): Mainmark's resin-injection ground strengthening was used to restore a Grade II listed building in Chester that had been suffering from subsidence. - [Resin injection concrete slab relevelling allowed a Currys store to stay open whilst subsidence was treated](https://mainmark.co.uk/case-studies/concrete-slab-relevelling-for-retail-unit/): Concrete slab re-levelling using Mainmark's resin-injection technology allowed a Curry's store to stay open whilst subsidence was treated. - [Teretek® Used to Reinforce Ground of Victorian Villa](https://mainmark.co.uk/case-studies/teretek-used-to-reinforce-ground-of-victorian-villa/): A Victorian villa had experienced differential settlement for 30 years. Teretek® was used to reinforce the ground under the residential property. - [Oxfordshire Recycling Centre Restored with Teretek®](https://mainmark.co.uk/case-studies/oxfordshire-recycling-centre-restored-with-teretek/): Teretek® was used to fill voids, improve the ground and re-support a road at an Oxfordshire recycling centre, returning it to a safe and functional state. - [Teretek® Used to Re-Support Subsided Cambridgeshire Semi-Detached Bungalow](https://mainmark.co.uk/case-studies/teretek-used-to-re-support-subsided-cambridgeshire-semi-detached-bungalow/): Mainmark's non-invasive and time-effective Teretek® resin-injection technology was used to re-support a semi-detached bungalow in Cambridgeshire. - [JOG and Teretek® Used to Raise and Re-level Three Business Units in East London](https://mainmark.co.uk/case-studies/jog-and-teretek-used-to-raise-and-re-level-three-business-units-in-east-london/): JOG computer-controlled grouting and Teretek® were used to raise and re-level a 7706m2 business park in Essex that had been suffering from subsidence. - [Teretek® Used to Fill Multiple Voids in Residential Housing Estate](https://mainmark.co.uk/case-studies/teretek-fills-multiple-underground-voids-in-residential-housing/): Mainmark's non-disruptive Teretek® technology was used to fill multiple voids at a residential housing estate in Kent. - [Teretek® Raises and Re-levels 58m2 MOD Property Affected by Subsidence](https://mainmark.co.uk/case-studies/re-levelling-mod-property-affected-by-subsidence/): Mainmark's non-invasive solution saved time and minimized disruption. Our latest Technology treat subsidence easily - [Teretek® Used to Fill Void Under 4,500m2 Research Laboratory](https://mainmark.co.uk/case-studies/teretek-used-to-fill-void-under-4500m2-research-laboratory/): Teretek® resin-injection technology was used to fill a void under a five-storey, 4,500m2 research laboratory that had become unstable due to poor drainage. - [Teretek® Strengthens Foundations in Grade II Listed Building](https://mainmark.co.uk/case-studies/teretek-strengthens-foundations-in-grade-ii-listed-building/): A project to transform a Grade II listed building in Bristol into flats included using Mainmark's Teretek® resin-injection to mitigate subsidence. - [Teretek® Used to Strengthen Foundations at Historic End of Terrace Retail Building](https://mainmark.co.uk/case-studies/teretek-used-to-strengthen-foundations-at-historic-end-of-terrace-retail-building/): During the refurbishment of a historic end-of-terrace retail building in Bedfordshire, Teretek® resin injection was used to strengthen the foundations. - [Teretek® Re-levels and Supports Home Built on Sloping, Unstable Soil](https://mainmark.co.uk/case-studies/teretek-re-levels-and-supports-home-built-on-sloping-unstable-soil/): Mainmark's Teretek® resin-injection was selected as a non-invasive solution for re-levelling and supporting a home built on sloping and unstable soil. - [Teretek® strengthens foundation and raises Oxford home](https://mainmark.co.uk/case-studies/teretek-strengthens-foundation-and-raises-oxford-home/): Teretek® resin-injection solution strengthens the ground beneath foundations ad re-levels and resupports a home in Oxford. - [Non-invasive JOG and Teretek® Used to Re-level South London Business Unit](https://mainmark.co.uk/case-studies/non-invasive-jog-and-teretek-used-to-re-level-south-london-business-unit-2/): JOG computer-controlled grouting and Teretek® were used to re-level a business unit that had been suffering from subsidence caused by water damage. - [JOG and Teretek® Re-supports and Re-levels Milton Keynes Commercial Property](https://mainmark.co.uk/case-studies/jog-and-teretek-re-supports-and-re-levels-milton-keynes-commercial-property/): Following a heatwave, Mainmark's JOG and Teretek® technology were used to deal with subsidence at a commercial property in Milton Keynes. - [Northamptonshire Warehouse Receives Bespoke Foundation Lift to Save Main Office](https://mainmark.co.uk/case-studies/foundation-repair-to-save-warehouse-office/): Mainmark carried out a bespoke foundation lift to save an office and warehouse complex in Northamptonshire from subsidence. - [Water Damaged Holy Trinity Church Re-levelled with JOG](https://mainmark.co.uk/case-studies/water-damaged-holy-trinity-church-re-levelled-with-jog/): Mainmark’s non-invasive, cost-effective and time-efficient JOG computer-controlled grouting was used to re-level a water-damaged church in Woking. - [Teretek® Resin Injection Used to Underpin Subsiding London Property](https://mainmark.co.uk/case-studies/teretek-resin-injection-used-to-underpin-subsiding-london-property/): Teretek® resin injection is used to underpin subsiding London residential property, filling the void and improving the ground despite limited access. - [JOG Computer-Controlled Grouting Method Re-levels and Re-supports Home](https://mainmark.co.uk/case-studies/jog-computer-controlled-grouting-method-re-levels-and-re-supports-home/): JOG Computer-Controlled Grouting Method was selected to raise and re-support a factory floor in Mersey side that was suffering from subsidence due to the underlying peat soil. - [Historic House Re-supported with Teretek](https://mainmark.co.uk/case-studies/teretek-raises-and-re-supports-factory-floor-for-a-safer-working-environment-2/): After purchasing an iconic eight-storey residential apartment building in Christchurch, new owners KCRB Ltd undertook seismic strengthening through ground remediation works. - [Teretek® Raises and Re-supports Factory Floor For a Safer Working Environment](https://mainmark.co.uk/case-studies/teretek-raises-and-re-supports-factory-floor-for-a-safer-working-environment/): Mainmark used teretek to raise and re-support a factory floor ithat was suffering from subsidence treated well. - [Teretek® Raises and Re-levels Concrete Slabs at Busy International Airport](https://mainmark.co.uk/case-studies/teretek-raises-and-re-levels-concrete-slabs-at-busy-international-airport/): Mainmark used Teretek® resin injection technology to lift and re-level three 2m2 concrete slabs at Belfast International Airport. - [JOG and LPDG used to Re-level a Commercial Building](https://mainmark.co.uk/case-studies/jog-and-lpdg-used-to-re-level-a-commercial-building/): Mainmark used computer-controlled grouting and low-pressure deep grout to re-level a commercial building that had been suffering from subsidence. - [JOG and Teretek® Used to Raise and Re-level Semi-Detached House Extension](https://mainmark.co.uk/case-studies/jog-and-teretek-used-to-raise-and-re-level-semi-detached-house-extension/): JOG computer-controlled grouting and Teretek® were used to treat subsidence, raising and re-levelling a semi-detached house extension built on London clay. - [JOG and Teretek® used to raise and re-level a 3,700m2 warehouse](https://mainmark.co.uk/case-studies/jog-and-teretek-used-to-raise-and-re-level-a-3700m2-warehouse/): JOG computer-controlled grouting and Teretek® were used to raise and re-level a 3,700m2 warehouse in an area with a history of mining activity. - [Grout injections Improve Earthquake Resilience For Christchurch Apartment Building](https://mainmark.co.uk/case-studies/grout-injections-improve-earthquake-resilience-for-christchurch-apartment-building/): In Christchurch, NZ, Mainmark undertook seismic strengthening on an eight-storey apartment building to mitigate liquefaction and re-level the structure. - [Power Station Floor Re-supported](https://mainmark.co.uk/case-studies/power-station-floor-re-supported/): When a mains pipe ruptured under a Queensland power station, Mainmark's Uretek deep-injection expanding structural resins rectified the situation quickly. - [Cementitious grouting used to re-level and stabilise London residential housing instead of traditional underpinning](https://mainmark.co.uk/case-studies/subsidence-heave-releveling-on-residential-housing-estate/): Mainmark's JOG computer-controlled grouting was used to re-level and stabilise a residential building in London, which was suffering from subsidence. - [Terefil® Used to Pre-Fill Pile Forms on High Rise Building Site](https://mainmark.co.uk/case-studies/terefil-used-to-pre-fill-pile-forms-on-high-rise-building-site/): Mainmark's Terefil® lightweight cementitious grout was used to pre-fill pile forms on a high-rise building site in Sydney. - [Art Gallery Re-supported and Re-levelled](https://mainmark.co.uk/case-studies/art-gallery-re-supported-and-re-levelled/): Mainmark's ground engineering solutions were used to strengthen the ground and re-level foundations at Christchurch Art Gallery. - [Terefil® used to address black mould at Tasmanian high school](https://mainmark.co.uk/case-studies/terefil-used-to-address-black-mould-at-tasmanian-high-school/): At a high school in Tasmania, Mainark's Terefil® was used to address the problem of black mould by filling the contaminated subfloor. - [Integrity Of Heritage Sea Wall Restored](https://mainmark.co.uk/case-studies/integrity-of-heritage-sea-wall-restored/): Mainmark's ground engineering expertise was demonstrated during a challenging project to reinforce and restore a heritage seawall in Victoria, Australia. - [Earthquake Damaged Heritage Church Re-levelled with JOG](https://mainmark.co.uk/case-studies/earthquake-damaged-heritage-church-re-levelled-with-jog/): Following earthquake damage, a heritage church in Christchurch, NZ, was re-levelled using Mainmark's JOG computer-controlled grouting technology. - [Harbour Seawall Rehabilitated](https://mainmark.co.uk/case-studies/harbour-seawall-rehabilitated/): Mainmark's ground engineering technologies were implemented to solidify the ground and fill in voids behind a harbour seawall near Sydney, Australia. - [Bespoke Culvert Relining Delivers Engineered Solution for Major Infrastructure Project](https://mainmark.co.uk/case-studies/bespoke-culvert-relining-delivers-engineered-solution-for-major-infrastructure-project/): The works undertaken by Mainmark for culvert relining have been excellent, and they are a contractor who is setting the standard and leading the way for safety. - [Voids Under Sewer System Filled Using Teretek®](https://mainmark.co.uk/case-studies/voids-under-sewer-system-filled-using-teretek/): Voids caused by surface water drainage under a sewer system in Christchurch, NZ, were filled using Teretek® resin injection. - [Gas pipe decommissioned with Terefil™](https://mainmark.co.uk/case-studies/gas-pipe-decommissioned-with-terefil/): Mainmark used Terefil™, a lightweight structural fill material, to decommission a 95-year-old low-pressure gas pipe running beneath a street in Melbourne. - [Teretek® Fills Underwater Voids to Stabilise Kimberley Rail Bridge Piers Following Floods](https://mainmark.co.uk/projects/teretek-fills-underwater-voids-to-stabilise-kimberley-rail-bridge-piers-following-floods/): Mainmark used Teretek® resin injection to fill underground voids to restore structural integrity to the Kimberley Rail Bridge piers. - [Teretek® Delivers Ground Stabilisation Solution for Hard to Reach Foundations at Melbourne Hospital Campus](https://mainmark.co.uk/case-studies/teretek-delivers-ground-stabilisation-solution-for-hard-to-reach-foundations-at-melbourne-hospital-campus/): Mainmark's Teretek® technology was used to deliver ground stabilisation for hard-to-reach foundations at the Melbourne Hospital Campus. --- ## News - [Subsiding Social Housing is Exacerbating Housing Crisis](https://mainmark.co.uk/news/subsiding-social-housing-is-exacerbating-housing-crisis/): Subsiding Social Housing is Exacerbating Housing Crisis. Find out more about this issue at Mainmark.co.uk. - [Mainmark appoints Peter Bierton as new CEO](https://mainmark.co.uk/news/auto-draft/): 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. - [Mainmark Firm Looks to ‘INS-Pire’ the Next Generation](https://mainmark.co.uk/technical-blog/mainmark-firm-looks-to-ins-pire-the-next-generation/): Amid a growing construction skills shortage, Mainmark Ground Engineering UK has proudly sponsored the return of an education initiative set to boost the insurance and construction industry pipeline. - [Mainmark ‘Hitting Sixes’ for County Cricket Club](https://mainmark.co.uk/technical-blog/mainmark-hitting-sixes-for-county-cricket-club/): Mainmark Ground Engineering UK is helping to preserve the heritage of 160-year-old Worcestershire County Cricket Club. - [Ensuring Efficiency for Global Automotive Giant](https://mainmark.co.uk/technical-blog/ensuring-efficiency-for-global-automotive-giant/): Mainmark Ground Engineering UK is helping to drive productivity in the automotive sector with its efficient resin injection technology. - [New ABI Stats Don't Bode Well For Homeowners](https://mainmark.co.uk/technical-blog/new-abi-stats-dont-bode-well-for-homeowners/): According to recent figures released by the Association for British Insurers (ABI), insurers paid out £585 million for weather-related damage to homes and possessions in 2024. - [Triaging Tree-Related Subsidence: An Insurance Perspective](https://mainmark.co.uk/technical-blog/triaging-tree-related-subsidence-an-insurance-perspective/): Local Surveyors Direct estimated that subsidence claims over the last 10 years have cost the insurance industry between £140-400 million annually. - [Mainmark making a big impact in tight spaces](https://mainmark.co.uk/technical-blog/mainmark-making-a-big-impact-in-tight-spaces/): Mainmark UK, a leader in ground engineering and asset preservation solutions, continues to invest in developing new technology to help tackle subsidence issues whatever the challenge. - [Early Detection of Subsidence is Critical for Infrastructure and Business](https://mainmark.co.uk/technical-blog/early-detection-of-subsidence-is-critical-for-infrastructure-and-business/): David Hedley is the Commercial & Infrastructure Lead at subsidence specialist Mainmark UK. - [Expert Exhibits the Growing Subsidence Risk for Self-Builders and Renovators](https://mainmark.co.uk/technical-blog/expert-exhibits-the-growing-subsidence-risk-for-self-builders-and-renovators/): Mainmark UK, has opened a new facility to raise awareness among self-builders and renovators about the potential impact of subsidence and other sub-structural issues. - [Understanding property foundations and how to protect them against vulnerabilities](https://mainmark.co.uk/understanding-property-foundations-and-how-to-protect-them-against-vulnerabilities/): Every property is subject to subsidence over the duration of its lifetime. The issue of subsidence however is common in older buildings constructed before modern construction methods became widely available - [Getting more out of less – the sustainable alternative to traditional ground stabilisation](https://mainmark.co.uk/technical-blog/getting-more-out-of-less-sustainable-alernative-to-traditional-ground-stabilisation/): Conventional underpinning has long been the standard solution for stabilising structures, but more innovative solutions are challenging the status quo. - [Subsidence Expert Predicts Higher Risk for Victorian Homes](https://mainmark.co.uk/technical-blog/subsidence-expert-predicts-higher-risk-for-victorian-homes/): According to public body Historic England, over a quarter of the British population live in Victorian homes, built at one of the biggest periods of economic, political and social reform driven by the Industrial Revolution. - [Urging Industry Perceptions on WIC to Change](https://mainmark.co.uk/technical-blog/urging-industry-perceptions-on-wic-to-change/): Freya Chapman, from Mainmark UK is backing the Women into Home Building programme. - [Subsidence Experts Leads Discussions at Grand Designs Live](https://mainmark.co.uk/technical-blog/subsidence-experts-leads-discussions-at-grand-designs-live/): As the official subsidence partner of Grand Designs Live, Mainmark UK took centre stage for the first time at the Grand Home event at Birmingham’s NEC in October). - [A Homeowners Guide to Spotting Subsidence](https://mainmark.co.uk/technical-blog/a-homeowners-guide-to-spotting-subsidence/): With mortgage rates remaining high and household budgets stretched, it’s important that any nasty surprises which could have a detrimental impact on finances are minimised. Subsidence is one issue that often gets overlooked and could become a major and costly issue if not addressed. - [Creating Harmony Between the Built and Natural Environments When Solving Subsidence](https://mainmark.co.uk/technical-blog/creating-harmony-between-the-built-and-natural-environments-when-solving-subsidence/): It is estimated that domestic subsidence claims over the last decade have cost the insurance industry between £140-400 million annually, with many of these claims resulting from tree-related subsidence caused when tree roots and vegetation extract moisture from shrinkable clay soils, leading to structural damage. - [Mainmark announces sponsorship at I Love Claims](https://mainmark.co.uk/technical-blog/mainmark-announces-sponsorship-at-i-love-claims/): Subsidence specialist Mainmark is set to be a key sponsor at the I Love Claims Summer Networking Event. - [Markmark Subsidence Specialist Joins Industry Leading Committee](https://mainmark.co.uk/technical-blog/markmark-subsidence-specialist-joins-industry-leading-committee/): Freya Chapman, Residential Lead at UK ground engineering specialist Mainmark has become the newest member of the sector leading Subsidence Forum Executive Committee. - [Shortlist Success for Mainmark](https://mainmark.co.uk/technical-blog/shortlist-success-for-mainmark/): UK ground engineering specialist Mainmark has been shortlisted for a major industry accolade. - [What is subsidence and what causes subsidence?](https://mainmark.co.uk/technical-blog/what-is-subsidence-and-what-causes-subsidence/): Discover the main causes of subsidence that can affect commercial industrial and infrastructure projects plus how get advice on treatment options - [How much does underpinning cost ?](https://mainmark.co.uk/subsidence-advice/how-much-does-underpinning-cost-in-2023/): Underpinning costs in vary depending on the method used. Typical underpinning costs are around £1,500/m2 for mass concrete and £2,600/m2 for piling. - [What is a standard penetration test or SPT?](https://mainmark.co.uk/technical-blog/what-is-a-standard-penetration-test-or-spt/): A standard penetration test (SPT), is used when carrying out geotechnical investigation works. It uses a split-spoon sampler attached to a metal rod. - [What are the alternatives to traditional types of pile underpinning?](https://mainmark.co.uk/technical-blog/alternatives-to-traditional-pile-underpinning/): The alternatives to the traditional types of pile underpinning use the controlled injection of a specialised grout or resin, into the ground. - [What are the top three causes of subsidence in the UK for 2024?](https://mainmark.co.uk/subsidence-advice/three-causes-of-subsidence-in-the-uk-2023/): The causes of subsidence are linked to the quality of the ground. Subsidence occurs when the ground is not able to support the weight of the building. - [Why is ground stabilisation needed?](https://mainmark.co.uk/technical-blog/why-is-ground-stabilisation-needed/): Ground stabilisation is required when the stability of a building becomes affected by changes in the ground that supports its foundations. - [How much did it cost to fix foundation subsidence in 2025](https://mainmark.co.uk/subsidence-advice/how-much-does-underpinning-cost/): How much did it cost to fix foundation subsidence, lets connect with mainmark to get better options - [Mainmark’s award-winning subsidence solutions win Project of the Year at the 2023 CN Specialists Awards](https://mainmark.co.uk/news/mainmarks-award-winning-subsidence-solutions-win-project-of-the-year-at-the-2023-cn-specialists-awards/): Mainmark has been awarded “Project of the Year’ for the engineering solution delivered on the Mays Lane project in London. - [The use of geophysical testing for Mainmark technologies](https://mainmark.co.uk/technical-blog/the-use-of-geophysical-testing-for-mainmark-technologies/): As ground engineering solutions do not always have visible results, validation testing is an integral part of any Mainmark project. - [An Innovative Sewer Abandonment Solution](https://mainmark.co.uk/news/an-innovative-sewer-abandonment-solution/): Melbourne’s North-East Link project posed a technical challenge: decommissioning the old, recently bypassed sewer pipework below the new motorway. - [2024 Wall cracks in your home – 3 signs to look out for and how to address them](https://mainmark.co.uk/subsidence-advice/wall-cracks-3-signs-to-look-out-for/): Wall cracks may be a sign of subsidence. When identifying the seriousness and solutions for wall cracks, the type, size and location are critical. You need to fix this wall crack issues before it get worst - [Challenging conventional underpinning](https://mainmark.co.uk/technical-blog/challenging-conventional-underpinning/): Conventional underpinning has long been an excellent solution for stabilising structures, but more innovative solutions are challenging the status quo. - [How climate change may affect your property’s foundations](https://mainmark.co.uk/subsidence-advice/how-climate-change-may-affect-your-propertys-foundations/): With the impact of climate change increasingly noticeable, property owners must be vigilant about ground movement and able to identify signs of subsidence. - [Maintaining culverts – Australia’s vital hidden infrastructure](https://mainmark.co.uk/news/maintaining-culverts-australias-vital-hidden-infrastructure/): Culverts are essential assets that protect buildings, roads, bridges and other structures – so culvert maintenance is a critical consideration. - [Remediating rather than replacing ageing infrastructure](https://mainmark.co.uk/technical-blog/remediating-rather-than-replacing-ageing-infrastructure/): New developments and increased traffic can put a significant strain on infrastructure, particularly in older suburbs surrounding large metropolitan cities. - [Can removing a tree cause foundation problems and which trees can damage foundations?](https://mainmark.co.uk/subsidence-advice/can-removing-a-tree-cause-foundation-problems/): Without proper consideration, tree removal may cause subsidence and other damage to buildings, paths, driveways and underground infrastructure. - [How to build homes that stand the test of time](https://mainmark.co.uk/subsidence-advice/how-to-build-homes-that-stand-the-test-of-time/): With extreme weather in the UK becoming more common, new buildings must be able to withstand the elements to prevent foundation damage and subsidence. - [A year in review with Mainmark ANZ general manager, Joe Glanville](https://mainmark.co.uk/news/a-year-in-review-with-mainmark-anz-general-manager-joe-glanville/): Mainmark is dedicated to innovation and is constantly pushing geotechnical boundaries through research, development and trials. - [Tunnel infrastructure: The key to functional cities are tunnels built to last](https://mainmark.co.uk/technical-blog/tunnel-infrastructure-the-key-to-functional-cities-are-tunnels-built-to-last/): With increasing urban population density and traffic loads, tunnel infrastructure is key in preventing transportation from grinding to a halt. - [Mainmark wins Good Design Award for Toowoomba Bypass project](https://mainmark.co.uk/news/mainmark-wins-good-design-award-for-toowoomba-bypass-project/): Mainmark's work on the Toowoomba Bypass received a prestigious Good Design Award Winner accolade in recognition of outstanding design and innovation. - [Maintaining a Heritage Site](https://mainmark.co.uk/technical-blog/maintating-a-heritage-site/): Buildings that have stood for hundreds of years have their own cultural and historical significance and issues of subsidence are one of the most common problems. - [Solutions to help maintain and remediate seawalls](https://mainmark.co.uk/technical-blog/solutions-to-help-maintain-and-remediate-seawalls/): Mainmark has extensive experience remediating seawalls, including revetments, using solutions that protect the asset’s longevity and structural integrity. - [How can industry move towards a greener way of working?](https://mainmark.co.uk/technical-blog/how-can-industry-move-towards-a-greener-way-of-working/): To find out more about our non-invasive ground improvement and subsidence remediation solutions, or to request support with your project, contact our team of experts. - [10 years of engineering development after the 2011 Christchurch earthquake](https://mainmark.co.uk/news/10-years-of-engineering-development-after-the-2011-christchurch-earthquake/): Following the 2011 earthquake in Christchurch, geotechnical engineering has evolved significantly and Mainmark has been leading the way forward. - [Key considerations when building a stable structure on a difficult site](https://mainmark.co.uk/technical-blog/key-considerations-when-building-a-stable-structure-on-a-difficult-site/): Ground engineers must consider terrain and other geotechnical issues when building on difficult sites, with challenges including slopes and embankments. - [Innovative lining and coating solutions for critical water infrastructure](https://mainmark.co.uk/technical-blog/innovative-lining-and-coating-solutions-for-critical-water-infrastructure/): For large pipes and below ground tanks, water ingress around the structure can often lead to ground movement and cracking. Water permeation then creates weak ground that will accelerate structural degradation. - [Issues Facing the UK’s Road and Infrastructure Networks](https://mainmark.co.uk/technical-blog/subsidence-issues-on-uk-roads/): Through collaboration and innovation, there is no reason why we shouldn’t be able to find long-term solutions to the problems at hand; to rebuild and sustain the public’s trust in our infrastructure networks. - [How Permeation Grouting stabilises structures impacted by coastal sandy soils](https://mainmark.co.uk/technical-blog/how-permeation-grouting-stabilises-structures-impacted-by-coastal-sandy-soils/): For more information about Mainmark UK’s innovative ground engineering solutions, contact our local team of experts. - [Collaborating with trades to remediate properties](https://mainmark.co.uk/subsidence-advice/collaborating-with-trades-to-remediate-properties/): Mainmark’s Teretek® resin injection improves ground-bearing capacity and re-levels buildings that have been impacted by foundation subsidence. - [The science behind Mainmark’s resin injection technology](https://mainmark.co.uk/technical-blog/the-science-behind-mainmarks-resin-injection-technology/): To find out more about Mainmark’s Teretek® resin injection technology, speak with our team of experts. - [The application of JOG Computer-Controlled Grouting](https://mainmark.co.uk/technical-blog/the-application-of-jog-computer-controlled-grouting/): Mainmark’s JOG Computer-Controlled Grouting is a unique, award-winning multi-point cementitious grouting process which is used to lift structures and achieve level correction - [The importance of being able to lift a building, and how it’s done](https://mainmark.co.uk/technical-blog/how-to-lift-a-building/): Through collaboration and innovation, there is no reason why we shouldn’t be able to find long-term solutions to the problems at hand. - [Injecting new life into ground improvement](https://mainmark.co.uk/technical-blog/injecting-new-life-into-ground-improvement/): Most subsidence issues in the UK are created by unstable ground, often caused by extreme weather conditions such as hot, dry summers and heavy rainfall or flooding - [How non-invasive solutions gave an international courier’s warehouse an extensive foundation lift](https://mainmark.co.uk/technical-blog/non-invasive-foundation-repair-for-warehouse/): Candid advice on how to choose between geopolymer injection, underpinning and piling when treating subsidence in warehouses and commercial buildings - [Global markets continue to embrace Mainmark’s innovative ground engineering solutions](https://mainmark.co.uk/news/global-markets-continue-to-embrace-mainmarks-innovative-ground-engineering-solutions/): Originally founded in Australia, our local operation has grown into a global enterprise with offices in New Zealand, Japan and the UK. - [How resin injection technology can help reduce liability risks in public spaces](https://mainmark.co.uk/technical-blog/how-resin-injection-technology-can-help-reduce-liability-risks-in-public-spaces/): Slips, trips and falls are a common occurrence and while people stumble and fall for all sorts of reasons, it’s important to maintain floors and walkways for all visitors or employees at the site. - [Mainmark wins at 2016 Ground Engineering Awards in London](https://mainmark.co.uk/news/mainmark-wins-at-2016-ground-engineering-awards-in-london/): We are extremely proud to announce that Mainmark has won the International Project of the Year Award at the 2016 Ground Engineering Awards for our Christchurch Art Gallery project in New Zealand. --- ## Landing Pages --- # # Detailed Content ## Pages --- ## Case Studies --- ## News --- ## Landing Pages ---