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Professional Ground Treatment for Stability & Support

Ground improvement works address the cause of slab and structural issues – unstable soil, voids and weak foundations.

Using advanced injection methods and high-strength grouts or resins, we treat the underlying ground to increase stability, fill voids, and help protect against further movement. This can be applied under slabs, footpaths, driveways, car parks, warehouse floors and other load-bearing surfaces.

Whether you’re dealing with existing slab movement or preparing for future works, our team tailors a ground improvement approach for each site.

Professional Ground Treatment

Areas We Service:

With offices in Brisbane and Sydney, we travel nationally to deliver remedial building and waterproofing services across all states of Australia: QLD, NSW, VIC, NT, SA , WA and TAS.

MORE THAN 10,000
PROJECTS

200+ YEARS COMBINED
EXPERIENCE

LICENSED & INSURED

RESIDENTIAL, COMMERCIAL
& INDUSTRIAL

Build on stronger foundations with
expert ground improvement

WS Remedial Group delivers specialised ground improvement solutions designed to enhance soil stability, reduce settlement, and increase load-bearing capacity for a wide range of civil, commercial, and industrial applications. Using advanced geotechnical methods such as soil compaction, grouting, and deep soil mixing, our team ensures the long-term structural performance of foundations while significantly reducing ongoing maintenance costs. Ground improvement not only strengthens the foundation system but also improves compliance with safety and engineering standards, offering clients greater confidence in their construction outcomes.

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Subgrade Stabilisation

We provide targeted subgrade stabilisation techniques that strengthen weak soils and create a reliable foundation for concrete and pavement structures, reducing the risk of future movement and costly repairs.

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Subsoil Drainage Solutions

Our subsoil drainage systems are designed to control groundwater and moisture build-up beneath slabs, preventing erosion, swelling, and instability that often lead to uneven surfaces.

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Joint Protection Systems

We install durable joint protection systems that minimise wear and tear in high-traffic areas, safeguarding slab edges and extending the life of concrete floors and pavements.

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Surface Hardening Treatments

Through specialised surface hardening treatments, we increase abrasion resistance and durability of concrete, ensuring a longer-lasting finish that withstands heavy use.

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Trafficable Coatings & Anti-Dust Sealers

Our range of trafficable coatings and anti-dust sealers improves surface performance by reducing dust generation, enhancing slip resistance, and protecting against chemical or mechanical damage.

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Crack Repair & Reinstatement

We offer expert crack repair and reinstatement services that restore concrete integrity, prevent further deterioration, and maintain a safe, stable surface for everyday use.

See the Results

During

During Ground Treatment

After

Ground Treatment after

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How Ground Improvement Works

Our process is designed to address the underlying ground conditions, not just the visible problem. By strengthening the soil and filling voids, we help extend the lifespan of slabs and reduce the likelihood of future instability.

A qualified inspector will attend site, assess
the slab and provide treatment recommendations.

Frequently Asked Questions

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What is ground improvement?

Ground improvement is the process of treating and stabilising soil or fill material to improve its load-bearing capacity and reduce settlement.

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Will it disturb my operations?

Often disruption is minimal — many treatments allow the area to be used again the same day.

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When is it needed?

When there are voids, weak soil, or erosion beneath a slab or structure, or when new works require a more stable base.

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What’s the difference between ground improvement and slab jacking?

Slab jacking is one form of ground improvement focused on lifting and re-levelling slabs. Ground improvement also includes treatments for soil strengthening and void filling without slab movement.

Testimonials

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WS Remedial Group
4.5
Based on 92 reviews
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George.garifalia Dakis profile picture
George.garifalia Dakis
08:59 23 Jul 26
I have worked closely with Dan and Kelly on a few projects in Darwin. Dan and Kelly have been a great pleasure and very professional to work with. I highly recommend WS Remedial for any water stop solutions, they do know their stuff.
Logan Siegel profile picture
Logan Siegel
04:12 20 Jul 26
Had a really positive experience with WS Remedial. The team was friendly, easy to communicate with and clearly knew what they were doing. They explained things in a straightforward way and were professional throughout. Would happily recommend them.
Michael Holmes profile picture
Michael Holmes
01:18 16 Jan 26
On-site crew are easy to work with, team gets the job done, no dramas and very professional in the work they do.
And although it was almost Christmas when I asked for their services, Kelly made it all happen smoothly and was terrific to work with.
Thanks
Mellissah Smith profile picture
Mellissah Smith
05:11 10 Dec 25
The professionalism of these guys is off the charts. I have a building that has water damage. Their people came in, gave a full comprehensive review - then told me the most cost effective way to fix it.
Eric Jones profile picture
Eric Jones
02:33 05 Dec 25
Excellent Service and Mick did exceptional work in addressing our problems
Amanda Jarrett profile picture
Amanda Jarrett
04:49 04 Jul 25
Waterstop Solutions recently conducted repairs works on our community centre. We found the pre works checks and logistics by Kelly excellent and responsive to our needs. Dudley and his sidekicks conducted themselves extremely professionally, kept us informed and followed our sign-in protocols to the letter. I would not hesitate to recommend this excellent business.
Keyur Prajapati profile picture
Keyur Prajapati
01:29 20 Jun 25
Highly recommend Waterstop Solutions! They really know their stuff when it comes to keeping water out of buildings. Cris did an excellent job professional and efficient. Looking forward to referring more clients!
Aaron Ritchie profile picture
Aaron Ritchie
10:10 11 Apr 25
Great service from Angus at assessment and quotation, through to Mariette to organise the booking, and finished by Dudley and Tyson completing the job. Would certainly recommend WaterStop for their professional manner and quality workmanship.
Photo from customer review
Greg Latemore profile picture
Greg Latemore
06:34 04 Apr 25
My wife and I have been delighted with the professional services provided by the Waterstop team including Angus, Tom and Ash. They took the time to understand and diagnose the water problem at our residence, and problem-solved to come up with the optimum solution. Time will tell but we are confident that the grinding, injections and vapour layer will solve the issue. We are impressed with how they related to us and the care they took. Highly recommended.
warwickkd profile picture
warwickkd
04:06 04 Apr 25
Water stop Solutions is my one stop shop to fix difficult water leaks. Having managed apartment buildings for 20 years I’ve had my fair share of water leaks. WaterStop solutions are my first call. I was lucky enough to get Mick on the job this morning. He showed up on time, reviewed what needed to be done and got into it. Job site was left, clean and tidy. I appreciate their good work and you will too
Laura Bean profile picture
Laura Bean
08:21 01 Apr 25
We had a frustrating issue with water leaking into our garage, and after struggling to find a proper fix, Waterstop came through. The team was professional and reliable, with special mention to Brandon, who kept us updated throughout the entire project and made the whole process easier. The quality of work was excellent. Highly recommend!
Warwick Absolon profile picture
Warwick Absolon
10:28 30 Mar 25
A great solution to a wet problem. Have used these guys a couple of times and great resolutions each time.
Richard Gill profile picture
Richard Gill
06:45 26 Mar 25
Mick has been fantastic with the work he had done in the hospital. Always professional, and informative, he worked well with my team to achieve a perfect result in a challenging environment
I would highly recommend Mick.
Thanks Mick you're the best 👌
Courtney Bignell profile picture
Courtney Bignell
02:09 26 Mar 25
Dudley worked efficiently with excellent communication. We will be recommending WaterStop Solutions in future!
Matt B profile picture
Matt B
00:40 26 Mar 25
Dudley and Anthony did a great job repairing and re-tiling our leaking balcony over a bedroom. Dudley and the team at Waterstop were flexible and worked with us and our contractors to implement sound solutions to significant problems found with the slab when the old tiles came up so that a robust waterproof solution could be put in place.
Brad “Choycee” Choyce profile picture
Brad “Choycee” Choyce
09:48 13 Mar 25
Exceptional service from Waterstop Solutions!

I was dealing with concrete dusting and high moisture issues in my garage and initially considered solutions recommended by others. However, after reaching out to Waterstop Solutions, they quickly identified that some of those options could actually worsen the problem over time.

Their expertise and honest advice helped me choose a cost-effective, non-invasive treatment that worked perfectly. The team was professional, knowledgeable, and efficient, making the whole process seamless.

A big thanks to Josh and the team at Waterstop Solutions for their outstanding work! Highly recommend their services.