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.

Why is my brick wall leaning or bowing outwards?

The most common cause is failed cavity wall ties. In a standard cavity brick wall, metal ties connect the outer leaf to the inner leaf. Over time—especially in older homes—those ties corrode and snap. Once the connection breaks, the outer leaf has nothing holding it in place and it begins to lean, bow, or bulge outward under its own weight.

What are cavity wall ties and why do they fail?

Cavity wall ties are metal connectors that bridge the gap between the inner and outer leaves of a double-brick (cavity) wall. In older Australian homes, the original ties were often made from mild steel or galvanised wire. Over decades, moisture inside the cavity causes these ties to rust, expand, and eventually snap. Once enough ties have failed, the outer wall loses its structural connection and starts to move.

What are the signs of wall tie failure?

Common signs include the outer brick wall visibly leaning or bulging outward, horizontal cracking along mortar bed joints (especially at tie positions), gaps appearing between the outer wall and the window or door frames, and rust staining on the mortar joints. In severe cases, you may see the wall physically separating from the roof line or eaves.

How do remedial wall ties work?

Remedial helical wall ties are stainless-steel fixings drilled through the outer brick leaf, across the cavity, and into the inner leaf. They’re bonded with high-strength structural grout that locks them securely in place. This physically reconnects the two leaves of the wall, helping prevent further outward movement and restoring the structural connection the original ties have lost.

Can a leaning wall be saved without rebuilding it?

In most cases, yes. If the wall hasn’t moved beyond a certain threshold, remedial wall ties can reconnect the outer leaf to the inner structure and arrest the lean. This avoids the cost, mess, and disruption of demolishing and rebuilding the wall. Our structural engineer will assess the extent of movement during your free assessment and confirm whether tie replacement is sufficient.

How much does remedial wall tie replacement cost?

Every home is different, so we provide a fixed-price quote after your free structural assessment. The cost depends on the length of wall affected, the number of ties required, and access conditions. There are no hidden costs or surprise charges—the price we quote is the price you pay.

How long does the repair take?

Most remedial wall tie installations are completed in one to two days, depending on the length of wall and the number of ties needed. There’s no need for scaffolding in the majority of cases—our technicians work from ladders or lightweight platforms. Our engineer will confirm the expected timeframe during your free assessment.

Do I need scaffolding for wall tie replacement?

In most cases, no. Our technicians can install remedial ties using ladders or lightweight access platforms for standard single and double-storey homes. If your property does require scaffolding—for example, on a tall wall with limited access—we’ll include this in your quote so there are no surprises.

Can remedial wall ties be installed on heritage homes?

Absolutely. Remedial helical ties are ideal for heritage properties because the repair is concealed entirely within the mortar joints. There are no visible fixings on the face of the brickwork, so the character and appearance of the home are fully preserved. We repoint the drill holes to match the existing mortar colour and profile.

What warranty do I get on the repair?

Every remedial wall tie installation is backed by our 20-year structural warranty, covering both product and workmanship. The warranty is attached to the property, not the owner—so if you sell your home, the warranty transfers automatically to the new owner.

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. Guaranteed for 20 years.

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

Brick Wall Leaning or Bowing Outwards?

Remedial helical wall ties reconnect your cavity walls from the inside — stopping the lean without knocking anything down. Guaranteed for 20 years.

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

Qualified Engineers · Licensed Builders

15,000+Homes Repaired

20-YearStructural Warranty

1–2 DaysMost Repairs

Trustpilot

Google

Don't take our word for it

Trustpilot

Google

The Wall Doesn't Need Rebuilding. It Needs Reconnecting.

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.

Worried about a wall that's leaning or bowing? The free assessment will tell you exactly what's happening — and whether remedial ties are the right fix. Get in touch — no obligation.

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.

Buildfix 20-year structural warranty badge

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

Why choose Buildfix?

Buildfix brings qualified engineers, licensed builders, skilled trades, and the manufacturer together under one roof. One team accountable for every step — from assessment to final sign-off. For nearly 15 years, we've 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.

Here’s why homeowners choose us

20-year structural warranty: Every repair is backed by a 20-year warranty — transferable if you sell your home.

Under one roof: We assess, design, repair, and manufacture — no need to deal with multiple contractors, because we handle it start to finish.

Fixed pricing, honest advice: No surprises, no tricks — just one fixed price from the start that never changes.

Non-invasive technology: Every method we use is non-invasive — less mess, less stress, and most repairs done in 1 to 2 days.

Watch Video

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

Real homes. Real results

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

Don't take our word for it

Read what our customers are saying.

Trustpilot

Google

Questions?

We are here to answer any questions you may have Monday – Friday 8am to 4pm AEST. Give us a call on 1300 854 115.

Leaning Wall? It Doesn’t Have to Come Down.

Brick Wall Leaning or Bowing Outwards?

Don't take our word for it

The Wall Doesn't Need Rebuilding. It Needs Reconnecting.