
Sinkhole Repair
Sinkhole repair and prevention

Sinkhole repair addresses the damage incurred when soil and structures collapse into an underground void. It also comprises preventative measures to help avoid more problems in the future.
Mainmark’s ground improvement technologies provide swift, reliable and cost-effective sinkhole repair and prevention. Suitable for a wide range of applications from factories and warehouses to offices and social housing, our sinkhole repair solutions help to restore the stability and integrity of the ground beneath commercial properties, roads, railways, airport runways and industrial buildings.
Depending on project requirements, we can offer Teretek® resin injection, JOG computer-controlled grouting and Terefil® lightweight cellular concrete. All these advanced sinkhole repair methods:
Fill voids
Improve ground
Increase the load-bearing capacity of the ground
Lift and re-level structures suffering from subsidence caused by sinkholes
These non-invasive sinkhole repair and prevention solutions are carried out with surgical-like precision. Small holes are drilled into the ground or under foundations, and the relevant materials are injected into precise locations. There is minimal disruption to building occupants, public or operations, and surfaces can be walked or driven on immediately after work is completed.
When is sinkhole repair needed?

Sinkholes are a type of subsidence and can pose significant risks to property and people. While sinkholes may seem to appear suddenly, there are often warning signs, such as:
Depressions or potholes – These can vary in size and depth and may appear suddenly or over time.
Cracks in the walls, ceiling, floor or ground – New or unexplained cracks, especially if they are wider than 3mm.
Doors and windows not opening or closing properly – Particularly if they were previously functioning correctly.
Leaning trees, posts or walls – If previously vertical structures start to lean, it could be a sign of subsidence or a developing sinkhole.
Vegetation changes – If the health or appearance of outdoor plants changes for no apparent reason, it could indicate that soil and groundwater conditions have changed due to a sinkhole.
Pond formation – The abrupt formation of a pond or standing water may signify the development of a sinkhole.
If any of these warning signs are observed, it’s crucial to take them seriously and seek out professional sinkhole repair services right away. Early detection and intervention can help prevent damage to buildings and building contents, while also mitigating safety risks.
Applications – Protecting your assets with sinkhole repair
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.




Mainmark sinkhole repair technologies
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – Resin injection underpinning alternative
Teretek® is an engineered solution for re-levelling subsided buildings that utilises a plural component, expanding polyurethane resin. The expansion force of the material results in the controlled lift of structures, with a by-product of localised bearing capacity improvement through soil densification.

JOG computer-controlled grouting underpinning alternative
JOG computer-controlled grouting uses a multi-point injection technique to insert cementitious grout materials under foundations. It can be used under commercial and residential buildings ranging from single-storey shops to high-rise structures. The injected materials have a controlled set time, which allows for the precise lifting of a structure.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for sinkhole repair
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our sinkhole repair solutions can be completed within a matter of days or hours.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Sinkhole repair can be carried out without the need for excavation or extensive disruption.
Varied density choices
Material density can range from 30 to 1500 kg/m3.
High strength
Our materials can achieve strengths of 50 kPa to more than 20 MPa.
Variable flow properties
With variable set times ranging from seconds to hours, materials can be precisely controlled and pumped over long distances.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Sinkhole Repair
Sinkhole repair and prevention

Sinkhole repair addresses the damage incurred when soil and structures collapse into an underground void. It also comprises preventative measures to help avoid more problems in the future.
Mainmark’s ground improvement technologies provide swift, reliable and cost-effective sinkhole repair and prevention. Suitable for a wide range of applications from factories and warehouses to offices and social housing, our sinkhole repair solutions help to restore the stability and integrity of the ground beneath commercial properties, roads, railways, airport runways and industrial buildings.
Depending on project requirements, we can offer Teretek® resin injection, JOG computer-controlled grouting and Terefil® lightweight cellular concrete. All these advanced sinkhole repair methods:
Fill voids
Improve ground
Increase the load-bearing capacity of the ground
Lift and re-level structures suffering from subsidence caused by sinkholes
These non-invasive sinkhole repair and prevention solutions are carried out with surgical-like precision. Small holes are drilled into the ground or under foundations, and the relevant materials are injected into precise locations. There is minimal disruption to building occupants, public or operations, and surfaces can be walked or driven on immediately after work is completed.
When is sinkhole repair needed?

Sinkholes are a type of subsidence and can pose significant risks to property and people. While sinkholes may seem to appear suddenly, there are often warning signs, such as:
Depressions or potholes – These can vary in size and depth and may appear suddenly or over time.
Cracks in the walls, ceiling, floor or ground – New or unexplained cracks, especially if they are wider than 3mm.
Doors and windows not opening or closing properly – Particularly if they were previously functioning correctly.
Leaning trees, posts or walls – If previously vertical structures start to lean, it could be a sign of subsidence or a developing sinkhole.
Vegetation changes – If the health or appearance of outdoor plants changes for no apparent reason, it could indicate that soil and groundwater conditions have changed due to a sinkhole.
Pond formation – The abrupt formation of a pond or standing water may signify the development of a sinkhole.
If any of these warning signs are observed, it’s crucial to take them seriously and seek out professional sinkhole repair services right away. Early detection and intervention can help prevent damage to buildings and building contents, while also mitigating safety risks.
Applications – Protecting your assets with sinkhole repair
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.




Mainmark sinkhole repair technologies
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – Resin injection underpinning alternative
Teretek® is an engineered solution for re-levelling subsided buildings that utilises a plural component, expanding polyurethane resin. The expansion force of the material results in the controlled lift of structures, with a by-product of localised bearing capacity improvement through soil densification.

JOG computer-controlled grouting underpinning alternative
JOG computer-controlled grouting uses a multi-point injection technique to insert cementitious grout materials under foundations. It can be used under commercial and residential buildings ranging from single-storey shops to high-rise structures. The injected materials have a controlled set time, which allows for the precise lifting of a structure.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for sinkhole repair
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our sinkhole repair solutions can be completed within a matter of days or hours.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Sinkhole repair can be carried out without the need for excavation or extensive disruption.
Varied density choices
Material density can range from 30 to 1500 kg/m3.
High strength
Our materials can achieve strengths of 50 kPa to more than 20 MPa.
Variable flow properties
With variable set times ranging from seconds to hours, materials can be precisely controlled and pumped over long distances.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Sinkhole Repair
Sinkhole repair and prevention

Sinkhole repair addresses the damage incurred when soil and structures collapse into an underground void. It also comprises preventative measures to help avoid more problems in the future.
Mainmark’s ground improvement technologies provide swift, reliable and cost-effective sinkhole repair and prevention. Suitable for a wide range of applications from factories and warehouses to offices and social housing, our sinkhole repair solutions help to restore the stability and integrity of the ground beneath commercial properties, roads, railways, airport runways and industrial buildings.
Depending on project requirements, we can offer Teretek® resin injection, JOG computer-controlled grouting and Terefil® lightweight cellular concrete. All these advanced sinkhole repair methods:
Fill voids
Improve ground
Increase the load-bearing capacity of the ground
Lift and re-level structures suffering from subsidence caused by sinkholes
These non-invasive sinkhole repair and prevention solutions are carried out with surgical-like precision. Small holes are drilled into the ground or under foundations, and the relevant materials are injected into precise locations. There is minimal disruption to building occupants, public or operations, and surfaces can be walked or driven on immediately after work is completed.
When is sinkhole repair needed?

Sinkholes are a type of subsidence and can pose significant risks to property and people. While sinkholes may seem to appear suddenly, there are often warning signs, such as:
Depressions or potholes – These can vary in size and depth and may appear suddenly or over time.
Cracks in the walls, ceiling, floor or ground – New or unexplained cracks, especially if they are wider than 3mm.
Doors and windows not opening or closing properly – Particularly if they were previously functioning correctly.
Leaning trees, posts or walls – If previously vertical structures start to lean, it could be a sign of subsidence or a developing sinkhole.
Vegetation changes – If the health or appearance of outdoor plants changes for no apparent reason, it could indicate that soil and groundwater conditions have changed due to a sinkhole.
Pond formation – The abrupt formation of a pond or standing water may signify the development of a sinkhole.
If any of these warning signs are observed, it’s crucial to take them seriously and seek out professional sinkhole repair services right away. Early detection and intervention can help prevent damage to buildings and building contents, while also mitigating safety risks.
Applications – Protecting your assets with sinkhole repair
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.




Mainmark sinkhole repair technologies
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.

Teretek® – Resin injection underpinning alternative
Teretek® is an engineered solution for re-levelling subsided buildings that utilises a plural component, expanding polyurethane resin. The expansion force of the material results in the controlled lift of structures, with a by-product of localised bearing capacity improvement through soil densification.

JOG computer-controlled grouting underpinning alternative
JOG computer-controlled grouting uses a multi-point injection technique to insert cementitious grout materials under foundations. It can be used under commercial and residential buildings ranging from single-storey shops to high-rise structures. The injected materials have a controlled set time, which allows for the precise lifting of a structure.
Mainmark’s specialised in-house solutions
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Featured Case Studies
A diverse group of passionate professionals, each bringing unique skills and experiences to drive innovation and excellence in every project we undertake.
Benefits of Mainmark’s treatments for sinkhole repair
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.
Fast
Our sinkhole repair solutions can be completed within a matter of days or hours.
Environmentally inert
We use safe materials that are non-toxic and do not leach into the environment or affect the treated area.
Non-invasive
Sinkhole repair can be carried out without the need for excavation or extensive disruption.
Varied density choices
Material density can range from 30 to 1500 kg/m3.
High strength
Our materials can achieve strengths of 50 kPa to more than 20 MPa.
Variable flow properties
With variable set times ranging from seconds to hours, materials can be precisely controlled and pumped over long distances.
Get in Touch
Our dedicated team of experts is committed to understanding your unique needs and objectives, working closely with you to develop and execute.