What We Fix
Leaning & Bowing Walls
Find out why your wall is leaning — and how to secure it without knocking it down and rebuilding.
- Free assessment · 1–2 day repair · 20-year warranty
- Structural Engineers · Licensed Builders · Skilled Technicians
Trustpilot
GoogleWhat We Fix
Leaning & Bowing Walls
Find out why your wall is leaning — and how to secure it without knocking it down and rebuilding.
- Free quote · 1–2 day repair · 20-year warranty
- Structural Engineers · Licensed Builders · Skilled Technicians
Leaning & Bowing Walls
Find out why your wall is leaning — and how to secure it without knocking it down and rebuilding.
- Free structural assessment with a fixed-price quote
- No walls knocked down — non-invasive repair
- 20-year product and workmanship warranty
Structural Engineers · Licensed Builders · Skilled Technicians
TrustpilotGoogleWhy is my wall leaning?
A wall that leans a little is easy to ignore. Most homeowners live with it for years — you get used to it, and it doesn't seem to be getting worse. Until it does.
Here's the thing most people don't realise: a wall doesn't lean and then stop. It leans because something is actively pulling it out of position — corroded wall ties, moving ground, lateral soil pressure. If that force is still there, the wall is still moving. Slowly, but it's moving. And a leaning freestanding wall is dangerous — it can collapse without warning.
The signs below will help you work out what's driving the lean — and whether it needs a structural engineer, not just a bricklayer.
What are the symptoms of leaning & bowing walls?
Some leans are obvious. Others hide in plain sight. Here are the signs that tell you a wall is on the move.
Brick Expansion
A vertical crack running from the roofline to the ground at a corner. Clay bricks absorb water and expand — but the external wall gets far more rain than the internal wall, so they expand at different rates. That difference snaps the wall ties holding the two walls together. Once the ties fail, the external wall detaches and starts to lean. If expansion joints are missing or undersized, the force has nowhere to go — and the corner is where it gives way first.
Gap Around Door Frame
The bricks should sit tight behind the door frame — that’s what builders call a door jam. The frame is fixed to the internal wall, so when you see the brickwork pulling away like this, it’s telling you the external wall is rotating away from the internal wall. The two are no longer moving together.
Paint Lines Opening
When painters paint walls around windows, they often leave slight paint marks on the frame or lintel — no big deal, but it’s a clue. If those paint lines have opened up, the wall has moved since it was last painted. Look at the steel lintel above the window — if bare galvanised steel is showing where there was once paint, that gap tells you exactly how far the wall has shifted.
Walls Shifting Above Ground
The wall at ground level is protected — dry, sheltered, stable. But the brickwork above is exposed to rain, and wet clay bricks expand. Over time, the exposed section expands enough to snap the wall ties connecting it to the internal wall. Once those ties break, the outer wall is essentially freestanding — and it starts to lean.
Widening Gaps Around Window
When the ground dries out and shifts, walls rotate — and the outer wall separates and leans. Salt attack on the outside brickwork can accelerate it, weakening the mortar and loosening the bond between bricks. The effects show up clearly around windows, where the brickwork pulls away from the frame and the gap widens over time. If the separation is bigger at the top than the bottom, the wall is actively rotating outward.
How to spot leaning walls around your home
How to fix leaning walls
Non-Invasive. Permanent. Guaranteed.
No Walls Knocked Down. No Bricks Replaced.
The traditional fix for a leaning wall is to knock it down and rebuild it. That's the rebuild trap — weeks of scaffolding and bricklaying, and tens of thousands in cost.
HelicalBar™ T316 stainless steel ties skip the rebuild entirely. Small pilot holes are drilled through the mortar joints of the outer brick leaf at 600 mm centres. A marine-grade stainless steel helical rod is driven through each hole, across the cavity, and dry fixed into the inner leaf. Each tie mechanically grips both skins of the wall, reconnecting them as a single structural unit. The outer leaf is locked back into position without removing a single brick.
If the lean is caused by foundation movement, GeoPoly™ resin injection stabilises the ground first — so the root cause is addressed before the wall is reconnected. Most repairs are done in 1–2 days.
Not sure what's causing the lean? That's exactly what the free assessment answers.
What to expect
A step-by-step guide of how the leaning wall repair process works — from assessment to completion.
Step 1Free Structural Assessment
A Buildfix engineer inspects the wall, measures the lean, and identifies what’s causing it — failed ties, soil pressure, foundation movement, or a combination. The repair plan is designed on-site based on what’s actually happening, not a guess. The price is usually explained there and then.
Step 2Get Your Quote and Book
A complete quote package arrives — detailed drawings, repair method statement, and a fixed-price quote. The price you see is the price you pay. When you’re ready, book through the online portal and suitable dates are organised for the work.
Step 3Remedial Wall Tie Installation
Small pilot holes are drilled through the mortar joints of the outer brick leaf at 600 mm centres. Marine-grade stainless steel helical rods are driven through each hole, across the cavity, and dry fixed into the inner leaf. Each tie physically reconnects the two leaves of the wall, stopping outward movement at the source.
Step 4Repoint 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 5Receive Your Warranty
Your 20-year product and workmanship warranty arrives via email with the Completion Package — a job report covering the work, materials, and images.
Structural fix.
Guaranteed to last.
The benefits of fixing leaning walls with HelicalBar™.
A leaning wall hasn’t failed — it’s lost its connection to the structure behind it. Stainless steel helical ties are drilled through the outer leaf, across the cavity, and dry fixed into the inner leaf. The two walls are reconnected mechanically — the lean is arrested.
Not sure if it's subsidence? Get your home assessed for free — we'll explain exactly what's going on and what can be done.
Real homes. Real results.
15,000+ homes and structures repaired. Want to see real Buildfix leaning wall repairs? Browse a few below.
StrataKensington, NSW
1920s Apartment Stabilised After Light Rail
Light Rail construction shook a century-old apartment block to its foundations. GeoPoly™ stabilised six residences at a fraction of underpinning costs — residents never had to leave.
HomeownerStrathfield, NSW
Heritage Home Repaired Twice, Same Team
When new cracks appeared in this 150-year-old Strathfield home, the owner didn’t hesitate — they called Buildfix again. Buildfix had already fixed the front of the house years earlier. This time, the team tackled the rear.
HomeownerRozelle, NSW
Terrace Wall and Façade Repaired
A large crack ran from bottom to top of this Victorian terrace’s gable end wall, threatening the chimney above. Buildfix stitched the wall closed with remedial ties — no bricks removed, no neighbours disturbed.
HomeownerStrathfield, NSW
Walls Reconnected After Tie Failure
Both external walls of this 150-year-old double-brick home had been slowly separating from the internal load-bearing wall for decades. Buildfix replaced every failed tie — without removing a single brick.
HomeownerManly, NSW
80 Years of Hidden Wall Tie Corrosion
The brickwork looked perfect. Inside the cavity, 80 years of salt air had corroded every wall tie to failure. Buildfix installed over a thousand stainless steel replacements — without disturbing a single brick.
HomeownerMays Hill, NSW
Brick Veranda Realigned to Save the Roof
A veranda pulling away from the house, columns rotating, and a roof at genuine risk of collapse. Foundation stabilisation and HelicalBar™ repair resolved everything in a day.
Ballina, NSW
Brick Veneer Stabilised and Re-Tied
A double-storey brick veneer home in Ballina was leaning due to ground subsidence from a faulty subterranean water system. GeoPoly™ stabilised the ground and HelicalBar™ re-tied the veneer in half a day.
Pennant Hills, NSW
Sinking Piers and Verandah Rescued
Emergency repair of sinking brick piers on a 1930s villa in Pennant Hills. GeoPoly™ injection stabilised the verandah and prevented roof collapse — completed in a single day.
HomeownerSt Kilda, VIC
Bungalow Repaired After 2021 Earthquake
After the 2021 Melbourne earthquake left an 80-year-old California Bungalow with cracked arches and shifting foundations, Buildfix repaired the damage in just three days — without removing a single brick.
“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
“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
“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
“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 4pm AEST. Give us a call on 1300 854 115.
