0800 9750507
United Kingdom
Fix Subsidence in One Day
Global leaders in foundation repair, structural repairs & ground strengthening for both residential & commercial applications
Subsidence repair specialist
Mainmark is a subsidence repair specialist offering solutions that can raise, re-level and re-support your home in as little as a day with minimal disruption for you and your family.
Our technologies include Teretek® resin injection and JOG computer-controlled grouting. Both use surgical precision to drill below the foundations of your home and inject inert materials that effectively deal with the root causes of subsidence.
With over 30 years of experience treating subsidence, we work closely with local structural engineers around the UK to ensure your home is lifted gently without damaging the building or landscaping.
Our solutions are covered by a 50-year guarantee, providing peace of mind for your home’s long-term safety and stability.
Why choose specialist subsidence repair solutions by Mainmark:
- Save thousands of pounds compared to traditional underpinning
- Quick and effective solutions
- Minimal disruption for you and your family
- Dealing with the underlying cause of subsidence
- 50-year industry backed guarantee
Mainmark can raise, re-level and re-support your home in as little as a day.
Mainmark uses a 2 in 1 non-invasive underpinning solution to fix subsidence. Our structural repair solution only strengthens the ground under the foundation but lifts the structure back to level.
- Cost effective – compared to traditional underpinning
- Non-invasive and clean – no major excavations with minimal disruption to residents
- State-of-the-art engineered solution – modern alternative to traditional underpinning
- Time Efficient – on average, your home can be re-levelled in as little as a day
- Worry-free – backed by an industry leading 50 year product warranty
Process of underpinning a house using resin injection
Step 1: Our technicians drill small holes around the problem area
Strategically-placed injection holes are barely visible, with work typically carried out like key-hole surgery from the outside of the house through 16mm diameter tubes, reducing to as little as 6mm in diameter if applied from inside the home.
Step 2: Polyurethane resin is injected and lift is monitored
Teretek expanding polyurethane resin mix is injected through very small tubes into the ground of the affected area. Our technicians closely monitor the lift with real time laser level monitoring.
Step 3: Unique two-in-one solution improves ground strength capacity and fills voids
When Teretek is injected into the ground it’s components mix together and expand by chemical reaction, which strengthens the ground, re-levels the building and fills voids quickly and with minimal disruption.
Step 4: Building is brought back to level, wall cracks close-up and floors are lifted
Benefits of Teretek:
✓ The ground beneath building is strengthened
✓ Soil is compacted
✓ Voids in the ground are addressed
✓ Your home becomes structurally sound, helping secure its future
Mainmark technology benefits
Benefits of Mainmark’s subsidence and cracked wall treatments
Contact Us Today
Fast, cost effective & non-invasive solutions to treat causes subsidence
© 2025 The Mainmark group of companies. ‘Mainmark®’, ‘Terefil®’, ‘Terefirm®’ and ‘Teretek®’ are trademarks of the Mainmark group of companies.
Mainmark Ground Engineering (UK) Ltd.
CRN: 09372443
