Solving Sunken Concrete
Fix your Sunken Concrete Slabs!
What are the symptoms of sinking concrete that I should be looking out for?
Floor Drops
If one side of your concrete floor has sunk deeper than the other, it may cause the floor to slant. This creates unwanted drops as you walk, which can be a dangerous trip hazard. If it feels like you’re walking up or down steps when you and your family walk across the floor, it’s likely a floor drop caused by sunken concrete.
Bowing Floor and Door Issues
If the central area of your concrete floor is sunken, your floor will have a noticeable bow. A bowing floor will subtly dip in the middle, forming a concave shape. You can test for this by placing a ball at the edge of the floor. If it rolls towards the centre of the room, you’ve got issues. If floor bows aren’t fixed, internal doors can begin to jam as excess forces are moved around the structure.
Gaps under Skirting Boards

Floor Drops
If one side of your concrete floor has sunk deeper than the other, it may cause the floor to slant. This creates unwanted drops as you walk, which can be a dangerous trip hazard. If it feels like you’re walking up or down steps when you and your family walk across the floor, it’s likely a floor drop caused by sunken concrete.

Bowing Floor and Door Issues
If the central area of your concrete floor is sunken, your floor will have a noticeable bow. A bowing floor will subtly dip in the middle, forming a concave shape. You can test for this by placing a ball at the edge of the floor. If it rolls towards the centre of the room, you’ve got issues. If floor bows aren’t fixed, internal doors can begin to jam as excess forces are moved around the structure.

Gaps under Skirting Boards
Why does it matter?
Sunken Concrete Slabs: A Warning Sign Inside and Outside Your Home
When the large concrete slabs that constitute your home’s interior flooring are sinking, it often indicates that your homes sub-floor foundation is also settling. This downward movement places immense pressure on your home from its foundation upwards, leading to a cascade of structural issues such as wall cracks, ceiling and cornice fissures, jammed windows and doors, leaning walls, and sloping floors.
Similarly, sinking outdoor concrete slabs in areas like driveways or pools signal underlying problems. The repercussions extend from drainage failures and underground service damages to safety hazards and aesthetic deterioration.
Resolving sinking slabs is crucial for halting these structural issues, ensuring both your indoor and outdoor spaces remain safe, functional, and visually appealing.
Introducing GeoPoly™ A Game-Changer for Homeowners: The Non-Invasive Solution to Sunken Concrete Issues
By injecting GeoPoly™ beneath your concrete slabs, we not only raise the slabs but also stabilise the underlying foundation soil for lasting support. GeoPoly™ operates through a safely controllable chemical expansion pressure. The process only requires a discreet 1cm drill hole for access, ensuring minimal surface disruption.
Whether it’s a sinking floor, pool, or driveway, we offer a low-impact solution to stabilise and lift the affected areas.
Need a solution to raise concrete? Book a FREE structural assessment today
Need a solution to raise concrete?
Book a FREE structural assessment today
Watch: GeoPoly™ transforms a sinking home in minutes!
The advantages of our GeoPoly™ solution
Lift Sunken Slabs
Minimal Disruption
Immediate Results
20-Year Warranty
Is your home suffering from sinking concrete?

Is your home suffering from sinking concrete?
Sinking concrete can impact your home dramatically. If you suspect your home is suffering sinking issues, it’s worth having it looked at sooner than later.
We’re happy to take a look at your home for FREE.
Top-rated reviews from real homeowners
Read genuine reviews on Google and Trustpilot to learn about the real experiences others have had with our services.
The Buildfix process was professional…
Zee J,
GREAT SERVICE
Regards
Enzo & Sabien of Saratoga / Davistown NSW
Enzo,
Buildfix and my sinking Brick wall
John Q,
Excellent service from start to finish
Consumer,
Zee J,
The Buildfix process was professional…

karen bryant,
John Q,
Buildfix and my sinking Brick wall
Buildfix were great from day one! Substantial subsidence was assessed by Dale with short notice fit in with my busy schedule. I was provided with a comprehensive quote, accepted online and given a date and time not long after. On the day Jordan and Jack arrived on time, set up, got on with the job with great results, providing me with updates and were super informative throughout the whole process. They left the site clean. Fantastic, will use these guys again.

Suzanne Jennings,
#1 Slab Jacking
Top-Rated in Australia!

386+ Reviews

Rated 4.9/5

6 Reasons why you should choose Buildfix
FREE structural assessment and honest advice
Buildfix structural engineers or consultants come to your home at no cost. Our assessments are thorough, uncovering your home’s issues and the best solutions.
UNLIMITED GeoPoly™️ for your job
After we’ve completed your quote, we don’t change it. We don’t add extra costs at the end. With us, there are no tricks, no games and zero surprises.
Permanent repair guaranteed
Using our advanced technology, GeoPoly™️, we can lift your concrete slabs and solve sinking issues permanently. Everything we do is guaranteed to last.
Experience - thousands of projects completed
With well over 15000 projects completed, you'll get the most experienced and committed teams around. Your home is in expert hands with our proven track record.
Best price promise
With our leading techniques and technology, we work more accurately and more efficiently than anyone else. We promise the best price* on advanced underpinning technology, if not we'll beat lower offers by 5%.
*Must be like-for-like, covering the same area with unlimited GeoPoly™️, or similar material.
FREE structural assessment and honest advice
One of our structural engineers or consultants come to your home at no cost. Our assessments are thorough, you'll learn about your homes issues, and best solutions.
UNLIMITED GeoPoly™️ for your job
After we’ve completed your quote, we don’t change it. We don’t add extra costs at the end. With us, there are no tricks, no games and zero surprises.
Permanent repair guaranteed
Using our advanced technology, GeoPoly™️, we can lift your concrete slabs and solve sinking issues permanently. Everything we do is guaranteed to last.
Experience - thousands of projects completed
With well over 13,000 projects completed, you'll get the most experienced and committed teams around. Your home is in expert hands with our proven track record.
Best price promise
With our leading techniques and technology, we work more accurately and more efficiently than anyone else. We promise the best price*, if not we'll beat it by 5%.
*Must be like-for-like, covering the same area with unlimited GeoPoly™️, or similar material.
Discover our methods: watch how we transform homes
Need a damp proofing solution? Book a FREE structural assessment today
Need a damp proofing solution?
Book a FREE structural assessment today

About Buildfix
Our dedicated team includes qualified engineers, licensed builders and expert technicians, all focused on precision, safety, and the long-term stability of your home. With our advanced technology, extensive experience and collective skills, you can be confident that your home is in the most capable hands.
“Buildfix’s priority is getting best outcome for you, and your home.”
Frequently Asked Questions
Will my concrete slab become level after lifting?
Buildfix aims to stabilise the soil under your concrete slab to halt any further sinking. Often, our GeoPoly™ technology can successfully lift and level the slab. However, outcomes can vary as they are determined by site-specific conditions.
Is the job done in just 1-2 days?
Mostly, yes. The majority of our projects are completed within a day. However, the duration varies depending on the complexity of the repair, the area size, and the ground conditions.
Do I need to vacate my property during the work?
Definitely, no. Buildfix primarily works externally, allowing you to continue your daily life. Occasionally, we require indoor access based on the project’s needs, but we’ll work around you.
What's your track record on completed projects?
Will the project create a lot of mess?
Minimal disruption is one of our aims. We inject our GeoPoly™ resin through small holes in the ground, akin to ‘keyhole surgery,’ minimising excavation and mess. You can continue with your regular home life while the work is being carried out.
Is there a warranty for the work?
Absolutely. We proudly offer an industry-leading, transferable 20-year warranty. This extensive coverage ensures your peace of mind for years to come and adds value to your property, even if you decide to sell it in the future.
Is the procedure eco-friendly and safe?
Yes, our GeoPoly™ resin is environmentally safe and poses no harm to the surroundings.
Who does the work on my property?
When it comes to performing work on the day, our team of skilled technicians will handle all aspects of repairs on your property.


Need Concrete Relevelling Today?
We’re happy to take a look at your home for FREE.

Need Concrete Relevelling Today?
We’re happy to take a look at your home for FREE.