Global leaders in foundation repair & ground strengthening for commercial & residential applications
Underpinning
Mainmark’s ground engineering technologies provide quick and effective solutions for residential underpinning, returning homes to a safe and level condition with minimal disruption.
Our non-invasive subsidence treatments include Teretek® geopolymer resin injection and JOG computer-controlled grouting.
Homes are gently lifted and re-levelled with no damage to landscaping and without compromising the underlying soil or your home’s structural integrity. Underpinning can often be completed within hours, and there’s no need to leave the property.
With over 30 years of experience in subsidence remediation, we offer industry-leading expertise, a 20-year guarantee and peace of mind for you and your family – get in touch to find out more.
Benefits of Mainmark subsidence remediation solutions:
- Quick and effective subsidence remediation solutions
- More cost-effective than traditional underpinning
- Non-invasive solution that doesn’t damage landscaping
- Minimal disruption – work is completed within hours
- Reliable and safe solutions
- 20-year industry backed guarantee

Underpinning a house
Are you considering underpinning your house?
Traditional methods of underpinning a house aims to improve the ground under the foundations. It is usually a treatment for subsidence or other problems with the soil beneath your home.
Structural underpinning a house can be a complicated, lengthy and costly process. The good news is, it’s not the only option for residential properties. Here at Mainmark, we provide fast, non-invasive and reliable solutions to common problems associated with ground movement or poor soil quality under your home.
Our Teretek® engineered resin injection solution and JOG computer controlled grouting technology are alternatives to mechanical jacking and other traditional house underpinning solution and can be used to provide:

● Ground improvement – Our technologies can increase load-bearing capacity and mitigate liquefaction under existing homes.
● Lifting and re-levelling – Resin or cementitious grout is injected under the foundations,
bringing your home back to level.
● Void filling – Injecting resin or cement into voids within the soil will help to support the
foundation.
If you’re considering underpinning a house due to poor soil quality, subsidence or other problems, award-winning Mainmark’s solutions may be a better choice.
Our technologies are quick to implement, cost-effective and result in minimal disruption to you and your family – giving you peace of mind that your home is safe and on a solid foundations.
How does it work?
How underpinning a house works
The process of underpinning a house can be expensive, time-consuming and a messy project. It involves excavating the soil underneath the foundations, removing it from the site and replacing it with concrete.
During the underpinning process, residents will need to leave their homes – usually for several weeks – and they may need to remove all their belongings as well. There are also implications upon return as the process can be messy and will require remediation work, whether it
is gardening, patio or decking repairs or redecoration of rooms in a home.
Mainmark technologies speed up and simplify the project significantly. Our solutions can be implemented within just a day and there’s no need for the family to leave the house or pack up their things and move to alternative accommodation.
As opposed to underpinning a house, Mainmark solutions are quick, clean and cost-effective. They involve drilling small holes beneath the foundation and sometimes through the floors within the home. Then a resin or cement is injected during a controlled process and can:
● Gently lift and re-level the house
● Improve and strengthen and compact the soil
● Fill in any voids under your house
Once our engineers have completed the work, the floors can be walked on immediately and cars can be parked on drives straight away.
There is no need to restore your garden and patio, wall cracks can close slightly as the home is re-levelled. Redecoration is needed to make
your house look new and fresh again.

Before

After
Technologies
Mainmark technologies – modern alternatives for underpinning a house
Teretek® – Undeprinnig a house alternative through resin injection
- Teretek is an engineered solution for ground improvement and re-levelling subsided residential homes, using a plural component, expanding polyurethane resin. Teretek works in a way similar to keyhole surgery. Small holes are drilled under the foundation in order for Mainmark’s proprietary, environmentally inert resin to be injected under the house foundation, improving the stability of the ground and re-levelling the home.
Undeprinnig a house alternative with JOG computer-controlled grouting
- JOG computer-controlled grouting is a multi-point injection technique. This technology typically uses cementitious grout to re-level structures, including residential homes. This means that cementitious grout is injected under the foundations of your home, using computers to accurately control the injection amounts in the various predetermined locations.
Mainmark technology benefits
Benefits of Mainmark technologies
Fast
Our technologies have fast curing times and treated areas can be used immediately or without the delays compared to traditional repair methods.
Environmentally Inert
Our technologies use an inert material that is non-toxic and does not leach into the environment or affect the treated area.
Non-Invasive
Our solutions are of surgical nature compared to traditional methods.

Cost-Effective
Compared to traditional methods, our solutions are more cost-effective, with minimal disruption to the area.
Case Studies
Featured Case Studies
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Mainmark Ground Engineering (UK) Ltd.
CRN: 09372443