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Cracked single storey Brisbane
Cracked single storey Brisbane bungalow with brick veneer repaired
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Our Solutions

Wall Crack Repair

With our non-invasive wall crack repair solutions, no wall gets knocked down or dismantled. Ever.

Why repairing wall cracks structurally is essential for your home?

Sometimes, wall cracks you see in your home are cosmetic blemishes. At other times, they’re an indicator of deeper structural problems. These kinds of wall crack exhibit themselves in unique ways.

In most cases, a wall crack repair solution is required when these types of cracks appear:

Common types of Structural Wall Cracks

Settlement cracks

Settlement cracks often occur in homes due to the settling of the building’s foundation over time. Factors such as poorly compacted fill, ground movement, changes in moisture levels and temperature variations in clay soils can cause the foundation to shift, leading to cracks. These are commonly first seen above doorways or windows. It’s essential to repair these cracks to maintain your home’s structural integrity and aesthetics.

Expansion cracks

Expansion cracks in walls are a common issue in newer homes, especially with hard-pressed clay bricks, which can expand over time. As these bricks grow, they exert lateral force on the structure, pushing against the ends of walls. This force often leads to cracks appearing, especially at the corners of homes. Not only do these cracks affect the appearance, but they can also compromise the stability of the walls, making timely repair crucial.

Subsidence cracks

Subsidence cracks in walls, typically appearing as stepped patterns in brickwork, are a key focus in wall crack repair. These cracks arise from ground movement under the building, causing uneven settling and structural shifts. Such subsidence can lead to significant structural damage if not addressed promptly. Stepped cracks are a clear indication of this issue and require expert assessment and wall crack repair to ensure the safety and integrity of the structure.

Understanding the causes of wall cracks and timely repair is crucial for maintaining the integrity and safety of your home. Each crack tells its own story, whether due to settling, expansion or subsidence issues.

Addressing cracks promptly around your home ensures they don’t lead to more significant problems and higher repair costs down the line.

With our wall crack repair solutions, no wall gets knocked down or dismantled. Ever

When it comes to fixing wall cracks, we never knock down, dismantle, buttress or reconstruct anything. These obsolete techniques break the bank and can even evict you from your home for weeks.

Instead, we use our very own wall crack repair solution formed using the latest technology available.

Implemented with progressive techniques by our team of technicians and builders, our solutions repair walls inside and outside a house over a day or two, at an affordable price.

And, most importantly, you can safely stay at home while we do the work.

Our wall crack repair solution – HelicalBar™

HelicalBar™ is our solution for repairing wall cracks and offers homeowners an advanced way to ensure their home’s structural integrity. Unlike traditional wall crack repair methods, which are costly and disruptive, HelicalBars™ are installed through small wall slots that cause minimal mess and hassle.

Our engineering team determines the exact location of each HelicalBar™ and prescribes the correct method to fix cracks caused by issues such as settling, thermal expansion or subsidence.

Once the HelicalBars™ are installed, our skilled technicians ensure a visually appealing finish by mortaring over the slots or replastering to provide a complete, seamless finish.

The advantages of our wall crack repair solution


HelicalBars™ are installed through small slits, ensuring safety and minimal disruption during the repair process.

Quick Completion

The HelicalBars™ install process is efficient, with most jobs completed within one or two days.


HelicalBars™ eliminates costly knockdown and rebuilding, keeping your walls and budget intact.

All Work Guaranteed

We guarantee your home's structural cracks won't return, or we will return at no cost to you.

Need a wall crack repair solution? Book a FREE structural assessment today

Need a wall crack repair solution?
Book a FREE structural assessment today

Discover our methods: Watch how we transform homes

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Real feedback from real homeowners

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Read genuine reviews on Google and Trustpilot to learn about the real experiences others have had with our services.

Why you should choose Buildfix

FREE structural assessment and honest advice

Buildfix structural engineers or consultants come to your home at no cost. Our assessments are thorough, uncovering your home’s issues and the best solutions.

UNLIMITED HelicalBar™ for your job

After we’ve completed your quote, we don’t change it. We don’t add extra costs at the end. With us, there are no tricks, no games and zero surprises.

Permanent repair guaranteed

Using our advanced wall crack repair technology HelicalBar™, we can solve your structural cracking permanently. Everything we do is guaranteed to last.

Experience - thousands of projects completed

With well over 10,000 projects completed, you'll get the most experienced and committed teams around. Your home is in expert hands with our proven track record.

Best price promise

With our leading techniques and technology, we work more accurately and more efficiently than anyone else. We promise the best price*, if not we'll beat lower offers by 5%.

*Must be like-for-like, covering the same area with unlimited HelicalBars™️, or similar products.

We cover locations throughout Australia

Our teams are ready to go where you live. Whether it be in Brisbane, Sydney, Melbourne, Perth or anywhere else in between**, we can come out and do the job for you.

**Excludes some remote locations.

#1 Wall Crack Repair
Top-Rated in Australia!

295+ Reviews

on Google as of April 24

Rated 4.9/5

670+ reviews on

Frequently Asked Questions

Will the wall cracks be completely gone?
Yes. Buildfix utilises HelicalBars to address structural issues and repair cracks around your home. Beyond offering structural solutions, we also improve aesthetics with mortar repointing and render and plaster repairs, making your home look its best again.
Mostly, yes. The majority of our projects are completed within one or two days. However, the duration varies depending on the complexity of the repair, the area size and the structural conditions.
Definitely not. Buildfix will work around your schedule and needs. Some projects may require indoor access, but we’ll let you know in advance if furniture needs to be moved to access the walls we’re targeting for repair.

Buildfix has successfully assessed and completed tens of thousands of projects across Australia over the past decade. This mostly includes residential projects but covers commercial and strata buildings as well.

Minimal disruption and mess is a priority for us. HelicalBar™ is seamlessly concealed within your walls, eliminating the need for large-scale demolition and the mess it creates. You can go about your daily life at home while the repairs are underway, and we’ll make sure your home is spotless.

Absolutely. We proudly offer an industry-leading, transferable 20-year warranty on our workmanship and a 50-year product warranty. This ensures your peace of mind for years to come, adding value to your property even if you decide to sell it in the future.

When it comes to performing the work on the day, our team of skilled technicians will handle all aspects of the repairs on your property.

All Buildfix technicians are full-time employees, not subcontractors, ensuring you receive reliable service from highly experienced professionals.

Repairing wall cracks is crucial to maintain the structural integrity of a building. Cracks can indicate deeper foundation issues, and if left unaddressed, they may lead to water infiltration, reduced property value and potentially unsafe living conditions.
There are several types of wall cracks, such as hairline cracks, which are common and often cosmetic, and more serious ones like diagonal or stair-step cracks, which could signal structural issues requiring immediate attention.
The HelicalBar™ solution involves installing a helical stainless-steel bar into the mortar joints of a brick wall to stitch and reinforce the area, providing a long-term, non-disruptive repair for cracked walls.
Unlike some methods that require extensive reconstruction, HelicalBar™ is designed to be minimally invasive. It reinforces the wall without the need for major deconstruction, which is more cost-effective and less disruptive.
It depends on the insurance policy and the cause of the cracks. Damage resulting from certain events like natural disasters may be covered, but it’s best to check with your insurance provider for specifics.

#1 Wall Crack Repair
Top-Rated in Australia!

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

#1 Wall Crack Repair Top-Rated in Australia!

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

Seeing flaking paint, crumbling bricks or plasterwork? DampBlock™ AQ50 is a next-generation damp-proof injection fluid designed to eradicate rising damp in walls.

With its advanced non-hazardous, odour-free formula, AQ50 offers homeowners a safer and cleaner way to rid their home of rising damp.
Is your home subsiding? GeoPoly™ GER60 is a cutting-edge geopolymer resin for lifting and stabilising foundations. It targets hard-to-reach voids deep below ground to instantly strengthen your home’s foundations.

GER60 is the ultimate ground engineering resin, providing unparalleled technology for a solid, permanent solution.


Seeing cracks in your walls? HelicalBar™ R304 returns the structural integrity of compromised walls while avoiding the hassle and expense of extensive rebuilding.

Its unique triple-fin helix design, made from high-grade stainless steel, provides incredible strength, durability and versatility, making it ideal for repairing structural defects in homes.
Bouncy, creaky, uneven floorboards? We can fix it. GeoPoly™ PSR30 is a specially formulated geopolymer resin designed to raise piers and level sinking timber floors while stabilising the foundation below ground.

GeoPoly™ PSR30 is a quick, disruption-free alternative to costly pier replacements, permanently preserving your floors.
Have you noticed sloping concrete floors or shifting driveways and paths? GeoPoly™ SJ120 directly addresses these issues. This technology uses a controlled expansion to relevel sunken concrete beneath the structure.

Once applied, you can immediately walk or even drive on the surface. Raise your concrete permanently with GeoPoly™ SJ120.
Are you seeing bulging or leaning walls around your home? HelicalBar™ T316 is our marine-grade 316 stainless steel remedial wall tie designed to rectify leaning and unstable wall issues.

It’s quick and non-invasive, securing walls through small pilot holes for fast and efficient repairs.