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Advanced Underpinning for Homes

Permanent Solutions for your foundation problems

GeoPoly® Resin Injection Technology

Raise and Stabilise Your Foundation in Just 1 Day!

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

Underpinning your home with GeoPoly® is quick and efficient, taking a fraction of the time compared to traditional methods

GeoPoly™ takes a fraction of the time compared to traditional methods.

What’s Causing Your Home to Move?

Understanding the root of the problem.

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

Sometimes wall cracks are purely cosmetic. Other times, the cracks indicate structural issues brought on by your house sinking. If your wall cracks appear stepped, appear in both the internal and external walls of your house as well as the corners of walls, your house may be sinking.

Ceiling and Cornice Cracks

Just like wall cracks, ceiling cracks can be superficial but can also indicate deeper structural problems due to the sinking of your home. The sinking places pressure upon the entire house starting in the foundations. This travels up walls into your cornices and ceiling, causing them to crack.

Doors & Windows Jamming

If you can’t close or open your doors and windows without them jamming, there’s a likelihood the foundation of your home has sunk, unevenly. What was initially level isn’t anymore. It’s this lack of balance in the structure’s foundation that causes doors to hit the floor when you open them or has walls squeezing windows in so they can’t be opened or shut.

Leaning or Off-level Walls

The source of leaning or off-level walls is the same as jammed windows and doors. As your house sinks, the unevenness of your home’s foundations can cause walls to lean one way or another. Leaning or off-level walls are horribly dangerous if left unchecked and unfixed. They have the potential to fall over and cause injury or worse.

Sloping Floors

If you have sloping floors, the reason is, again, unevenness in the foundations of your home due to sinking. Your floors will slope as one side of the house sinks downwards more than the other. To double check for a sloping floor, just place a ball on the floor and see if it rolls away from you. If it does, it’s likely you’re in a sinking house.

Gaps between Walls & Floors

As the foundation underneath your home sinks, the floors pull away from the base of your interior walls, causing gaps to appear. The sinking of your home may also result in a floor that becomes bouncy as you walk upon it. This is likely caused by the ground pulling away from the upper parts of your home’s structure. This is dangerous because this indicates your floor’s support system is beginning to sag and weaken.
  • 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!

Don’t wait for the problem to worsen! Schedule an assessment today!

Identifying Subsidence: What does it Look like?

Visible signs you shouldn’t ignore.

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.
Tiled floor gap Tiled floor gap repaired
Protecting your Home and Investment Costs Less Than You’d Think

Why You Need to Repair Subsidence

5-min 6-min

Why You Need to Repair Subsidence

Prevent further damage and ensure safety.

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?

Your Trusted Partner in Foundation Repair

  • 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

ongoogle logoas of Feb 2025

Rated 4.9/5

670+ reviews on
Learn Why Our Customers Recommend Us

Hear what our clients say

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

ongoogle logoas of Feb 2025

Rated 4.9/5

670+ reviews on

Why Choose Buildfix?

Experience

We’ve got 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.

Frequently Asked Questions

What is GeoPoly® resin injection?
GeoPoly® resin injection is an advanced geopolymer technology developed by Buildfix to stabilise and raise sinking foundations. The resin is injected directly below structures at various levels to target the source of subsidence. Once injected, the resin expands, filling voids and binding with the soil, effectively raising and stabilising the foundation to resolve subsidence issues.
Most GeoPoly® resin injection projects are completed in just one day, ensuring minimal disruption to your daily life. However, the exact duration may vary depending on the specific requirements and scale of your project.
Yes, GeoPoly® resin injection provides a long-lasting solution to foundation problems by targeting the underlying cause of subsidence and increasing the load-bearing capacity of your foundation. With proper drainage and plumbing maintenance, and if left undisrupted underground, the resin will remain effective for the remaining lifespan of the structure.
Yes, our work is backed by an industry-leading 20-year warranty that covers all workmanship and materials. Additionally, our warranty goes beyond industry norms by protecting your foundation against subsidence caused by unexpected events such as burst pipes, localised flooding, and vegetation growth, ensuring you receive complete peace of mind.
Compared to traditional methods like concrete underpinning, repairing your home with GeoPoly® is significantly more affordable. Costs typically range between $4,000 and $16,000 per job, with GeoPoly® projects being generally up to five times cheaper than traditional underpinning solutions. An additional benefit is that, because the process is non-invasive, there are no unexpected cost variations, and GeoPoly® jobs come with a fixed price, ensuring no unpleasant surprises during the project.

Need a Subsidence Solution?

We’re happy to take a look at your home for FREE.

Need a Subsidence Solution?

We’re happy to take a look at your home for FREE.