0800 9750507
United Kingdom
Overview
Residential solutions
Since 1989, Mainmark has raised, re-levelled and re-supported homes and other residential buildings, delivering successful solutions to thousands of properties.
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.
Get a free subsidence quote and schedule your in-person visit now!
Areas of concern
Wall cracks and signs of subsidence
Disregarding cracks in walls may mean you’re missing the warning signs of serious and ongoing structural damage caused by subsidence.
Heritage Property
Our team can raise, re-level and re-engineer the ground, strengthening older properties and giving them support for years to come.
Conservatories
Conservatory subsidence remediation methods can be completed in about a day, saving you time and money, as well as minimising disruption to your family.
Bay Windows
As alternatives to mechanical jacking, underpinning and piling, our window methods use surgical-like precision and address subsidence under your bay window.
Extensions/Basements
Mainmark offers solutions that deal with the root cause of the extension subsidence, getting your home back to normal as soon as possible.
Get a free-in person site survey
If you’re a property owner you can benefit from a completely free in person or telephone inspection survey and full quotation with Mainmark.
During the survey, the site inspector will:
- Visually inspect your home, looking for signs of subsidence, such as cracks, sticking windows and doors and uneven floors.
- Take measurements to determine if there has been any settlement or movement of the ground.
- Review historic data and records to understand your home’s history and any previous subsidence issues.
The subsidence inspection will ensure a comprehensive analysis of the issue affecting your home, considering the size and the layout of the property, as well as the extent of the subsidence.
*Fee applies if you are not the residential property owner
Why choose us?
Global expertise
Benefit from our extensive experience and industry-leading knowledge.
Personalised approach
Tailored engineering solutions designed to meet your specific requirements.
Minimal disruption
No need to move out or tell the neighbours with our non-invasive ground repair methods.
Speed
Save weeks of operational time with much quicker results than traditional underpinning.
Cost effective
Competitively priced and excellent value for money.
20 Year warranty
Receive a long-standing product warranty to give you peace of mind.
Free-in person site audit
For no additional cost speak directly with a trained engineer who will also quote the job.
Sustainability
Minimise your projects carbon footprint and promote sustainable solutions.
Our services
Property/home subsidence
Modern resin and concrete mix injection methods can be used to successfully strengthen and re-level the ground in homes affected by subsidence faster than traditional underpinning methods.
Underpinning
Our methods will strengthen the ground foundation of an existing building or structure for years to come
Slab lifting
Our non-invasive slab lifting technologies allow building occupants and contents, including plant and machinery, to remain in place.
Slope ground support
Our surgical precision and polymers, or cementitious grouts are delivered in a precisely controlled process. The material fills voids, cracks, and fissures to provide reliable slope stabilisation.
Facilitating excavation / Basement excavation
– permeation grounting or teretek
Sinkhole repair
Repairing the ground where soil and structures collapse into underground voids
Void filling
Comprehensive void silling solutions for diverse market sectors, using specialised chemical or cementitious grouts
Our products
Teretek®
Our Teretek® technology provides a solution to address subsided structures, improve ground, and fill voids.
Terefil®
Our Terefil® technology provides an advanced lightweight cellular concrete for soil replacement, large void filling, and pipe abandonment.
JOG
Computer-Controlled Grouting
Our JOG technology is a state of the art, computer controlled, multipoint injection system.
Permeation grouting
Permeation grouting is the most widely used pressure grouting technique that stabilises soil prior to excavation or construction.
Need help?
Give us a call on 0333 252 2074 or connect with us via our contact form
Residential FAQ’s
What happens with unlevel driveways, floors and hardstand areas?
After the application of the Mainmark solution, unlevel surfaces will become aligned again as the ground underneath is strengthened and re-supported. Simple cosmetic repairs may be required.
Will there be a mess?
Very little, if any. We use Teretek® engineered Resin Injection technology, which is likened to “keyhole surgery”, or JOG Computer-Controlled Grouting, with no major excavation and minimal disruption or mess. The injection holes required are very small.
How long does it take?
Each project is different and depends on the required amount of lift, area for correction, building construction, and ground conditions. Most projects can be completed in a day or two, and we can work at night or on one area at a time, so your business can keep operating.
Do the property occupiers need to vacate?
No, most projects don’t require you to vacate the premises or even move furniture or equipment. For the most part, you can keep operating as normal. Driveways can often be driven on in as little as 30 minutes after treatment.
What warranty will i get?
The materials we use have been developed for use underground and have been specifically engineered to resist shrinkage and deterioration. Teretek® is warranted by Mainmark for an industry-leading period of 20 years.
Is it safe and environmentally friendly?
Injected Teretek® and JOG materials are environmentally inert and have no detrimental effects on the environment.
Do the cracks on the walls disappear?
The cracks on the walls will reduce once the work is done but there will still be some cosmetic work that needs to be carried out to rectify and re-decorate the wall.
What other differences will ground improvement make?
Windows and doors that were previously jammed or sticking will return to normal functionality. Ground levels will return to being even.
Our Memberships and Accreditations
Talk to an expert
Get in touch about your project
Step 1
Please submit your enquiry using our online form. Please tell us why you’re reaching out so we can better assist you!
Step 2
One of our expert team members will contact you to schedule a site inspection that suits you.
Step 3
One of the Mainmark experts will visit your home or property, assess the damage, and ascertain the likely cause. They will establish the approach needed, creating a plan specific to the needs of your building and provide you with a detailed quote.
Case studies
Featured
Residential projects
© 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
