How much does foundation repair cost?

Most foundation repairs range from $4,000 to $16,000, depending on the extent of the damage and the size of your property.

How long does the repair take?

Most foundation repairs are completed in just 1-2 days using our GeoPoly™ resin injection method.

What is GeoPoly™ resin injection?

GeoPoly™ is a high-strength expanding resin that we inject beneath your foundation. As it expands, it fills voids, compacts loose soil, and lifts your foundation back to level.

Will you need to dig up my yard?

No! We drill small holes (about 16mm diameter) through your slab or beside your footings, inject the resin, and patch the holes. No excavation required.

What does the 20-year warranty cover?

Our 20-year structural warranty covers the repair work we perform. If any issues arise with the repaired area due to workmanship or materials, we'll fix it at no additional cost.

Is the assessment really free?

Yes, 100% free with no obligation. Our structural engineer will inspect your property, explain the issues, and provide recommendations.

How do I know if my wall ties have failed?

The outer wall leaning or bulging outward, horizontal cracking along mortar bed joints, gaps between the outer wall and window or door frames, and rust staining on mortar joints are all signs. If your wall is visibly separating from the roofline, remedial wall ties are likely needed. A free structural assessment confirms the extent of tie failure.

Can a leaning wall be saved without rebuilding it?

In most cases, yes. If the brickwork hasn’t moved beyond a certain threshold, remedial wall ties reconnect the outer leaf to the inner structure and arrest the lean. This avoids the cost and disruption of knocking down and rebuilding. The structural engineer will confirm during the free assessment.

How long does remedial wall tie installation take?

Most remedial wall tie installations are completed in 1–2 days, depending on the length of wall and number of ties needed. No scaffolding is required in the majority of cases. The engineer will confirm the expected timeframe during the free assessment.

Will the remedial wall ties be visible?

No. The ties are installed through the mortar joints and the drill holes repointed to match the existing mortar colour and profile. There are no visible fixings on the face of the brickwork. The repair is completely concealed.

Can remedial wall ties be installed on heritage homes?

Remedial helical ties are ideal for heritage properties. The repair is concealed entirely within the mortar joints, so the character and appearance of the home are fully preserved. No visible fixings, no modern brackets, no impact on the heritage aesthetic.

What causes cavity wall ties to fail?

Original wall ties in older Australian homes were made from mild steel or galvanised wire. Over decades, moisture inside the cavity causes them to rust, expand, and snap. Brick expansion in newer homes can also snap ties by putting lateral pressure on them. Once enough ties fail, the outer wall disconnects and starts to lean.

Is the 20-year warranty transferable if I sell?

Yes. The 20-year product and workmanship warranty is attached to the property, not the owner. If you sell, the warranty transfers automatically — giving buyers confidence the remedial wall tie repair is permanent.

What is the process for repairing or replacing wall ties?

New stainless-steel helical ties are drilled from the outside, through the outer brick leaf, across the cavity, and bonded into the inner leaf with structural grout. Tie lengths vary from 220 mm to over 1 metre depending on the cavity width and wall construction. The drill holes are repointed to match the existing mortar — the repair is invisible from the outside.

HelicalBar™ remedial wall tie reinforcement reconnecting masonry walls on a Buildfix homeowner job

Leaning Walls

Leaning wall? It doesn’t have to come down.

Remedial helical wall ties reconnect your cavity walls from the inside — stopping the lean without knocking anything down. Backed by a 20-year warranty.

Free assessment · 1–2 day repair · 20-year warranty
Structural Engineers · Licensed Builders · Skilled Technicians

Trustpilot

Google

Leaning Walls

Leaning wall? It doesn’t have to come down.

Remedial helical wall ties reconnect your cavity walls from the inside — stopping the lean without knocking anything down. Backed by a 20-year warranty.

Free quote · 1–2 day repair · 20-year warranty
Structural Engineers · Licensed Builders · Skilled Technicians

Stop your walls pulling apart.

Remedial helical wall ties reconnect your cavity walls from the inside — stopping the lean without knocking anything down. Backed by a 20-year warranty.

Free structural assessment with a fixed-price quote
No knocking down walls — no rebuilding
Backed by a 20-year warranty

Structural Engineers · Licensed Builders · Skilled Technicians

15,000+Homes Repaired

20-YearStructural Warranty

1–2 DaysMost Repairs

Trustpilot

Google

Remedial wall ties — reconnect, don't rebuild.

Non-Invasive. No Rebuilding. Guaranteed.

No Walls Knocked Down — Ever.

When the original metal ties inside a cavity wall corrode and snap, the outer brick leaf loses its connection to the inner structure. Over time, it starts to lean, bow, or bulge outwards under its own weight. Left alone, it gets worse. But in most cases, the brickwork itself is perfectly sound — it's just lost its anchor.

Remedial helical wall ties are stainless-steel fixings drilled through the outer leaf, across the cavity, and bonded into the inner leaf with high-strength structural grout. This physically reconnects the two leaves of your cavity wall — stopping outward movement and giving the outer wall the structural support the original ties have lost. No demolishing walls. No rebuilding from scratch. No visible fixings on the face of the brickwork.

The whole job typically takes a day or two. When it's done, the drill holes are repointed to match the existing mortar colour and profile. Your wall is straight, reconnected, and structurally sound. You'd never know the work had been done.

Not sure if remedial ties will hold the wall — or if it needs rebuilding? That's exactly what the free assessment answers.

Structural Engineers · Licensed Builders · Skilled Technicians

What to expect

Here’s how we repair your home’s leaning walls, from first visit to warranty.

Buildfix structural engineer assessing leaning brick wall with tablet

Step 1

Free Structural Assessment

One of our structural engineers inspects the cavity wall, measures the extent of the lean or bow, and identifies how many original ties have failed. A tailored repair using remedial helical wall ties is designed on the spot. The price can usually be explained there and then.

Buildfix quote package showing structural repair detail, quote cover page, and repair method statement

Step 2

Get Quote and Book

A complete quote package arrives with detailed drawings, method statements, and a fixed-price quote. Book through our online portal when you’re ready.

Buildfix technician drilling helical wall ties through outer brick leaf into inner leaf

Step 3

Remedial Wall Tie Installation

Stainless-steel helical ties are drilled through the outer brick leaf, across the cavity, and bonded into the inner leaf with high-strength structural grout. Each tie physically reconnects the two leaves of the wall, stopping outward movement at the source.

Repointed mortar joints on brick wall after remedial tie installation

Step 4

Repoint and Finish

Drill holes are repointed with mortar matched to the existing colour and profile. No visible fixings remain on the face of the brickwork. The wall looks exactly as it did — except now it’s structurally connected and stable.

Step 5

Receive Your Warranty

The Completion Package arrives a few days after sign-off — a full report with images, invoice, and your 20-year warranty documentation.

Structural fix.
Guaranteed to last.

The benefits of remedial helical wall tie repair.

Remedial helical wall ties are stainless-steel fixings drilled through the outer brick leaf, across the cavity, and bonded into the inner leaf. This physically reconnects the two leaves of your cavity wall — stopping outward movement without knocking down or rebuilding a single wall.

Cross-section showing helical wall tie being drilled through outer brick leaf, across cavity, into inner leaf

Ready to reconnect your leaning walls?

Walls inspected, cause identified, fixed-price quote. It's free.

Structural Engineers · Licensed Builders · Skilled Technicians

Real homes. Real results

See how we’ve helped homeowners fix their leaning walls.

Why choose Buildfix?

Buildfix brings structural engineers, licensed builders, skilled technicians, and the manufacturer together under one roof. For nearly 15 years, Buildfix has been delivering non-invasive structural repairs — saving homeowners the hassle and costs of traditional methods. What used to take weeks now takes just 1 to 2 days.

Why homeowners choose Buildfix:

Non-invasive technology. No walls knocked down. No bricks replaced. No structural rebuild. You can stay home while the work happens.

Guaranteed. Your repair is backed by a 20-year warranty. If the wall starts moving again, we come back at no cost to you.

One team, diagnosis to repair. Buildfix engineers assess your home and oversee the repair. Buildfix technicians carry it out.

Save thousands — best pricing. All quotes fixed-price. No hidden charges. No surprise costs. If your job goes over, it's on us.

Structural Engineers · Licensed Builders · Skilled Technicians

Watch Video

Learn more about Buildfix and how we fix leaning walls and failed wall ties.

Structural Engineers · Licensed Builders · Skilled Technicians

“All of the Buildfix team have been easy to communicate with. Everyone was punctual and communicated arrival times well ahead of arrival.”

Scott HolmesMelbourne, VIC

Questions?

Our team is here to answer any questions you may have Monday – Friday 8am to 5pm AEST. Give us a call on 1300 854 115.

Stop your walls pulling apart.

Remedial wall ties — reconnect, don't rebuild.