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Cracked single storey Brisbane
Cracked single storey Brisbane bungalow with brick veneer repaired
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Solving Wall Cracks

Eliminate your Wall Crack Permanently!

Concerned about wall cracks in your home? Solving them is easy with Buildfix.

Are the cracks around my home structural
What should I be looking out for?

Stepped Wall Cracks

If you have stepped cracks over 5 mm in width, it’s highly likely your house foundations are no longer stable. Stepped cracks usually indicate that a large part of your home is moving, whether due to unstable brick house foundations or shifting soil below ground.

If you can see stepped cracks, then it’s probable that there are cracked walls in other parts of your home. These cracks are definitely not just cosmetic or superficial. They should be investigated as soon as possible.

Internal and external wall cracks

If you have cracks sitting above your doors and windows, or if your wall cracks are deep enough for light to travel through, then your home is experiencing significant, damaging movement. This movement puts a lot of stress on your home’s foundations and can be caused by foundation failure, soil failure, additional loads or house extensions, or even expansion of the actual brick.

Remember, if you can see straight through a crack, your home has serious structural problems that need to be addressed.

Horizontal Wall Cracks

While stepped cracks indicate mass structural shifts, horizontal wall cracks are a tell-tale sign of localised movement in your home. These cracks are usually an indicator of a foundational failure directly beneath the cracked wall.

Sometimes, horizontal cracks will stop abruptly, which means the wall is sinking at a very specific location. However, even though these horizontal cracks are a localised issue, if they’re not quickly addressed the remainder of your structure will follow suit, sinking and breaking apart as your home’s foundations drop.

Wall Cracks in Corners

Over extended periods, clay bricks (natural product clay) will expand. Sometimes even up to several millimetres per year. Sure, this doesn’t sound like much, but over the decades it’ll all add up, creating a strong lateral force on your structure. This force drives the ends of walls into each other, causing cracks to appear in the corners of your home.

If left untreated, lateral force issues will continue to destabilise your home. Things will get worse and worse until your walls become free-standing, meaning they’re about to topple over.

Why should I fix them?

Wall cracks could indicate that your home is facing structural issues.

Some cracks might just be cosmetic blemishes, but others can signal a more serious structural problem.

Leaving these cracks unattended could compromise structural integrity, resulting in expensive rebuilding of walls, and reduce your home’s value. They may even be a safety concern around your family.

Introducing Helical Bar™: The non-disruptive approach
to fixing wall cracks and structural issues.

HelicalBar™ is Buildfix’s proprietary solution, engineered to mend structural cracks with minimal disturbance. The distinctive triple-fin design, crafted from high-grade stainless steel, is extraordinarily robust and versatile—it’s tough enough to address the most complex structural problems around your home.

Unlike traditional methods that require tearing down and rebuilding walls, HelicalBar™ is seamlessly embedded into small slots in your walls, making them unnoticeable and preserving your home’s original character and charm. With HelicalBar™, no wall gets knocked down and rebuilt, saving you time, money, and effort.

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

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

The advantages of our HelicalBar™ solution


HelicalBars™ are installed through small slots in walls. It’s totally safe and you and your family stay home during repairs.

Keep Existing Walls

With HelicalBar™ there’s no need to knock down and rebuild walls. Your walls stay in place, so your budget doesn’t take a hit.


Installing HelicalBar™ doesn’t take long at all. Most of our jobs are done in just one or two days. We’ll be in and out in no time.

20-Year Warranty

You get peace of mind. We guarantee your home’s structural cracks won’t return, or we return at no cost to you.

Need a wall crack solution?

Need a wall crack solution?

Wall cracks can impact your home dramatically. If you suspect your house is suffering structural issues, it’s worth having it looked at sooner than later.

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

Top-rated reviews from real homeowners

Don’t just take our work for it! Hear what our customers say.

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

#1 Wall Crack Repair
Top-Rated in Australia!

295+ Reviews

on Google as of April 24

Rated 4.9/5

670+ reviews on

6 Reasons 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 technology HelicalBar™, we can solve your structural cracking permanently. Everything we do is guaranteed to last.

Experience - thousands of projects completed

With well over 13,000 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* on advanced underpinning technology, if not we'll beat lower offers by 5%.

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

We cover locations throughout Australia

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

**Excludes some remote locations.

Discover our methods: watch how we transform homes

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

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

About Buildfix

As Australia’s leading expert in structural repair, Buildfix provides non-disruptive, cost-effective solutions to homeowners across Queensland, New South Wales, and Victoria. Each month, we conduct hundreds of FREE structural assessments, resulting in thousands of successful repair projects for homeowners every year.

Our dedicated team includes qualified engineers, licensed builders and expert technicians, all focused on precision, safety, and the long-term stability of your home. With our advanced technology, extensive experience and collective skills, you can be confident that your home is in the most capable hands.

“Buildfix’s priority is getting best outcome for you, and your home.”

Frequently Asked Questions

Will the wall cracks be completely gone?
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 and or two days. However, the duration varies depending on the complexity of the repair, the area size, and the structural conditions.
Definitely, no. Buildfix will work around your schedule and needs. While some projects may require indoor access, 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 completed over 13,000 projects across Australia spanning the past decade. This includes mostly residential projects, along with some commercial and strata complexes .

Minimal disruption and mess is a priority for us. HelicalBar™ is seamlessly embedded into small slots in your walls, which eliminates the need for large-scale demolition or mess. 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, which ensures your peace of mind for years to come and adds value to your property, even if you decide to sell it in the future.

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

Need a Wall Crack Solution?

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

Need a Wall Crack Solution?

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.