Advanced Underpinning for Homes
GeoPoly® Resin Injection Technology
At Buildfix, we use advanced GeoPoly® resin injection technology to address and solve foundation issues without the need for invasive digging. Our advanced GeoPoly® solution restores levels and ensures your home remains stable and secure, providing a permanent solution.

Benefits of GeoPoly® resin injection:
Visual Improvements
Cracks can close and walls and floors may relevel.
Permanent Stability
Resin injection targets weaknesses deep below ground.
Non-Disruptive
No digging or heavy machinery needed.
Affordable
We guarantee the most cost-effective repair options.
Quick and Efficient
Most projects are completed in just one day.
Warranty
Get peace of mind with our industry-leading 20-year warranty.
- Visual Improvements: Cracks can close and walls and floors may relevel.
- Permanent Stability: Resin injection targets weaknesses deep below ground.
- Non-Disruptive: No digging or heavy machinery needed.
- Affordable: We guarantee the most cost-effective repair options.
- Quick and Efficient: Most projects are completed in just one day.
- Warranty: Get peace of mind with our industry-leading 20-year warranty.
Watch: GeoPoly® relevel a home
GeoPoly™ takes a fraction of the time compared to traditional methods.
What’s Causing Your Home to Move?
Movement occurs when the ground beneath your home begins to sink or shift. This can be caused by various factors such as:
- Water Leaks: Broken pipes can wash away soil, undermining your foundation.
- Soil Movement: Changes in moisture levels causing soil to expand or contract.
- Tree Roots: Large trees nearby can extract moisture, leading to soil shrinkage.
- Poor Compaction: Inadequate soil compaction during construction.


Early warning signs of subsidence:
Wall Cracks
Ceiling and Cornice Cracks
Doors & Windows Jamming
Leaning or Off-level Walls
Sloping Floors
Gaps between Walls & Floors
- Cracks in walls, floors, and ceilings
- gaps around doors and windows
- Doors and windows that stick
- Uneven or sloping floors
Don’t wait for the problem to worsen! Schedule an assessment today!
Identifying Subsidence: What does it Look like?
Subsidence can manifest in various forms, and early detection is crucial to prevent extensive damage. Look out for:
- Cracks: Both inside and outside your home, particularly around doors and windows.
- Misaligned Windows and Doors: Difficulty opening or closing them.
- Uneven Floors: Noticeable sloping or sagging in your flooring.
- Separation: Gaps forming between walls and ceilings or floors.


Why You Need to Repair Subsidence


Why You Need to Repair Subsidence
Ignoring subsidence can lead to severe structural damage, escalating repair costs, and safety hazards. Here’s why you should act quickly:
- Maintain Structural Integrity: Prevent further weakening of your foundation.
- Increase Property Value: A stable foundation boosts your home’s market value.
- Safety: Ensure the safety of your home and loved ones.
- Peace of Mind: Resolve the issue with a permanent, guaranteed solution.
Watch: how we work
Learn why our customers recommend us! Book a FREE assessment!
Why Choose Buildfix?
- Experience: Tens of thousands of succesfully completed projects.
- Innovators: Developers of the cutting-edge GeoPoly® technology.
- Expertise: Buildfix is Australia‘s #1 leading underpinning experts.
- Customer Satisfaction: Our clients trust us for reliable, long-lasting results.
At Buildfix, we pride ourselves on our transparent, customer-first approach. We understand the stress that subsidence can cause, and we’re here to make the repair process as smooth and hassle-free as possible. From the moment you contact us, you’ll experience our commitment to exceptional service.
But don’t just take our word for it! Hear what our customers have to say.
Read genuine reviews on Google and Trustpilot to learn about the real experiences others have.
#1 Underpinning
Top-Rated in Australia!

386+ Reviews

Rated 4.9/5

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,
Hear what our clients say
But don’t just take our word for it! Hear what our customers have to say. Read genuine reviews on Google and Trustpilot to learn about the real experiences others have.
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 Underpinning
Top-Rated in Australia!

386+ Reviews

Rated 4.9/5

Why Choose Buildfix?
Experience
Innovators
Expertise
Customer Satisfaction
Frequently Asked Questions
What is GeoPoly® resin injection?
How long does the process take?
Is the solution permanent?
Is there a guarantee?
What does it cost?


Need a Subsidence Solution?
