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Video | Our underpinning solution

Book a FREE assessment with our underpinning experts today

Book a FREE assessment with our underpinning experts today

What is underpinning?

Underpinning is a process which strengthens the foundations underneath a house to allow for additional loads or to correct subsidence.

Most of the time, the underpinning of a home is a massive undertaking for everyone involved and can be costly for homeowners. Because of this, it’s particularly important homeowner’s understand what’s causing their home to subside as well as the various underpinning methods available on the market. Homeowners also need to understand the advantages and disadvantages they can bring.

Why underpinning is essential for a sinking home

When a home suffers from subsidence, an immense amount of force is being exerted onto the structure. This force strains the foundations, floor, walls, ceiling and even the roof.

If sinking isn’t stopped, foundational and structural issues like wall cracks can multiply, escalating repair costs to put a large hole in your budget. Underpinning is essential to stopping a home from sinking further, enduring more damage and saving you money.

The most common underpinning solutions on the market

Mass concrete underpinning

A builder digging foundation holes for mass concrete underpinning

Mass concrete underpinning is one of the most commonly known type of underpinning, and is also known as traditional underpinning. It involves excavation of large holes underneath a home and constructing box shaped piers to support your home’s structure. It’s most useful for exposed footings or when floor levels are being lowered to accommodate a new room.

Steel pile underpinning

Steel pile underpinning

Steel pile underpinning is an option for homes built on reclaimed land, flood prone areas or land that used to be bogs. The steel piles are driven deep into the ground by specially adapted, tracked excavators. They are then fixed with brackets that are attached to your home’s structure as these types of land tend to be unstable, especially after heavy rainstorms.

Cement grout underpinning

Pumping non-shrink cement under the structure to fill in large voids

Cement grout underpinning is a form of preventative maintenance for subsiding buildings and structures. Underpinning can be achieved by pumping a special concrete mix or a non-shrink cement grout under structures to fill in large holes and voids. This underpinning method works well if the gaps below a building or structure are large and locatable.

The different types of underpinning solutions on the market

A builder digging foundation holes for mass concrete underpinning

Mass concrete underpinning

Mass concrete underpinning is one of the most commonly known type of underpinning, and is also known as traditional underpinning. It involves excavation of large holes underneath a home and constructing box shaped piers to support your home’s structure. It’s most useful for exposed footings or when floor levels are being lowered to accommodate a new room.

Steel pile underpinning

Steel pile underpinning

Steel pile underpinning is an option for homes built on reclaimed land, flood prone areas or land that used to be bogs. The steel piles are driven deep into the ground by specially adapted, tracked excavators. They are then fixed with brackets that are attached to your home’s structure as these types of land tend to be unstable, especially after heavy rainstorms.

Pumping non-shrink cement under the structure to fill in large voids

Cement grout underpinning

Cement grout underpinning is a form of preventative maintenance for subsiding buildings and structures. Underpinning can be achieved by pumping a special concrete mix or a non-shrink cement grout under structures to fill in large holes and voids. This underpinning method works well if the gaps below a building or structure are large and locatable.

Our advanced underpinning solution – GeoPoly™

GeoPoly™ is our proprietary geopolymer soil stabilisation technology. It’s an advanced alternative to most common underpinning solutions, and has successfully repaired and releveled 1000’s of foundations across Australia.

GeoPoly™ works fast and effectively, reversing the impact of subsidence and reinstating the structural integrity of your home. Our advanced underpinning solution GeoPoly™ is meticulously injected into the ground through small, surface-level drill holes. This method targets the underlying cause of the problem, offering a permanent fix with minimal disruption. You can continue with your daily routine while we secure your home.

Whether your home is suffering from the effects of flooding, reactive clay, weak or aerated ground, GeoPoly™ is up to the task. Our process can effectively relevel your foundations, restoring your home’s structural integrity and safety.

Lift your worries along with your foundation. Repair your home’s subsidence once and for all with GeoPoly™.

Our advanced underpinning solution – GeoPoly™

GeoPoly™ is our proprietary geopolymer soil stabilisation technology. It’s an advanced alternative to most common underpinning solutions, and has successfully repaired and releveled 1000’s of foundations across Australia.

GeoPoly™ works fast and effectively, reversing the impact of subsidence and reinstating the structural integrity of your home. Our advanced underpinning solution GeoPoly™ is meticulously injected into the ground through small, surface-level drill holes. This method targets the underlying cause of the problem, offering a permanent fix with minimal disruption. You can continue with your daily routine while we secure your home

Whether your home is suffering from the effects of flooding, reactive clay, weak or aerated ground, GeoPoly™ is up to the task. Our process can effectively relevel your foundations, restoring your home’s structural integrity and safety.

Lift your worries along with your foundation. Repair your home’s subsidence once and for all with GeoPoly™.

Need an underpinning solution? Book a FREE assessment today

GeoPoly™ can raise and underpin foundations

Need an underpinning solution to relevel your foundation? Book a FREE assessment today

The advantages of our GeoPoly™ underpinning solution

Raises Foundations

Relevels Foundations

If your foundations are subsiding, GeoPoly™ can raise it. Cracks may even close, making your home look better instantly.

Non-Disruptive Underpinning

Non-Disruptive

GeoPoly™ is non-disruptive and is injected through small drill holes. You and your family can stay home while we work.

Job complete in 1 or 2 days

Job Complete in 1-2 days

GeoPoly™ gets to work in minutes, meaning your home can be underpinned in a day or two.

10y-workmanship

All Work Guaranteed

We guarantee our GeoPoly™ underpinning solution will stop your homes subsidence for good.

The advantages of our GeoPoly™ underpinning solution

What our underpinning customers say

From genuine Buildfix customers who have left reviews on Google and Trustpilot.

Our underpinning promises:

  • FREE foundation assessment
    One of our qualified engineers or experienced builders will come to your home to see if it’s subsiding at no cost. Our quotes are free as well. Save money from the get-go.
  • Transparent fixed price quotes
    After we’ve completed your quote, we don’t change it. We don’t add extra costs at the last minute. With us, there are no tricks, no games and zero surprises.
  • Permanent repair of subsidence
    Using our advanced technology GeoPoly™, we can underpin and lift homes permanently. What we fix stays fixed. Everything comes with a 10-year workmanship warranty, and 50-year product warranty.
  • Minimal disruptions to your life and home
    With our innovative, industry leading technology, underpinning your home shouldn’t take more than a day, or two. We don’t excavate or pull anything apart.
  • Competitive prices
    With our leading techniques and technology, we work more accurately
    and more efficiently than anyone else. Underpinning should only cost
    between $4K to $16K*.

    *Based on averages, subject to assessment
  • Our teams are mobile and located throughout Australia
    Our underpinning teams are ready to go where you live. Whether it be in Brisbane, Sydney, Canberra, Melbourne or anywhere else between, we can come out and do the job for you*.
    *Some rural locations areas will require a virtual assessment.

Need an underpinning solution?

If your home is showing signs of movement such as sloping floors and wall cracks, it’s might be subsiding and require underpinning.

We’d love to help you underpin your home. We can start with a FREE subsidence assessment.                             

Need an underpinning solution?

If your home is showing signs of movement such as sloping floors and wall cracks, it might be subsiding and require underpinning.

We’d love to help you underpin your home. We can start with a FREE subsidence assessment.