Concrete Slab Jacking Experts Australia

Enhance foundation stability with expert ground improvement solutions

If your driveway, warehouse floor, car park, or footpath is uneven or sinking, slab jacking is one of the most effective ways to address it.

As part of our ground improvement services, slab jacking involves injecting a specialised grout or resin beneath the slab to fill voids, stabilise the underlying ground and lift the surface back towards level.

This approach is less disruptive and often more cost-effective than full slab replacement. We’re keen to ensure that you get the best solution for your budget.

Fast, targeted treatment to help protect against further movement and damage.

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.

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.

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.

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.

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.

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.

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.

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3-Step Process

INSPECTION

TREATMENT PLAN

SLABLIFT & STABILISATION

How Slab Jacking Works

We drill small entry points through the slab, inject a carefully measured volume of grout or resin, and lift the slab back towards its intended position. The material also helps stabilise the underlying soil to support long-term performance.

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

Frequently Asked Questions

What is slab jacking?

Slab jacking is a process that raises and re-levels sunken or uneven concrete slabs by injecting high-strength polyurethane foam beneath the surface. The foam expands, filling voids and lifting the slab back to its original position.

Is it cheaper to raise concrete or replace it?

In most cases, slab jacking is more cost-effective than replacement. It avoids demolition and disposal costs, reduces downtime, and creates less environmental impact by preserving existing slabs.

How long does slab jacking take?

Most slab jacking jobs can be completed in a few hours, depending on site conditions. Surfaces are often ready for use the same day, making it a fast and efficient solution.

Does slab jacking really work?

Yes. Polyurethane slab jacking is proven to be effective, minimally invasive, and long-lasting compared to traditional mud-jacking. It provides immediate support, reduces trip hazards, and extends the life of concrete surfaces.

How much does slab jacking cost in Australia?

The cost varies depending on:

The size and thickness of the slab
The ground conditions beneath the slab
The amount of polyurethane foam required

Every project is individually assessed and quoted to ensure accuracy.

What types of slabs can be raised?

Slab jacking is suitable for:

Driveways and footpaths
Warehouse and factory floors
Car parks and hardstand areas
Patios, pool surrounds, and residential slabs

How long do slab jacking repairs last?

When completed with high-quality polyurethane systems, slab jacking provides a durable, long-lasting solution. Many manufacturer warranties extend up to 35 years, depending on the system used and site conditions.

Is slab jacking environmentally friendly?

Yes. Slab jacking is more sustainable than replacement. It:

Reduces waste by reusing existing slabs
Minimises disruption to surrounding areas
Requires less energy and resources than new concrete installation

Testimonials

Waterstop Solutions QLD

4.5

Based on 91 reviews

review us on

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

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

02:33 05 Dec 25

Excellent Service and Mick did exceptional work in addressing our problems

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

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

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.

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

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

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

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

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

02:09 26 Mar 25

Dudley worked efficiently with excellent communication. We will be recommending WaterStop Solutions in future!

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

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.

Slab Jacking Experts

Lift, Level & Stabilise Your Concrete Without the Cost of Replacement