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Our Solution

Underpinning

Underpinning

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 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 the most commonly known type of underpinning and is also known as traditional underpinning. It involves excavation of large holes underneath a home and building 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 piles drilled into the ground by excavators

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 most common underpinning solutions on the market

A builder digging foundation holes for mass concrete underpinning

Mass concrete underpinning

Mass concrete underpinning is the most commonly known type of underpinning and is also known as traditional underpinning. It involves excavation of large holes underneath a home and building 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 piles drilled into the ground by excavators

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.

Geopoly Logo

Our underpinning solution

Geopoly™ is our geo-polymer soil stabilisation solution. It’s an advanced alternative to the most common underpinning solutions.

By injecting Geopoly™ into the ground underneath your home, we can increase the load-bearing capacity of your home’s foundation soils. Geopoly™ works through chemical expansion pressure, which is completely controllable and safe.

If your home is subsiding due to weak or aerated ground, Geopoly™ will make the ground solid and raise the foundations to restore structural integrity.

Repair your home’s subsidence fast with Geopoly™.

Geopoly Logo

Our underpinning solution

Geopoly™ is our geo-polymer soil stabilisation solution. It’s an advanced alternative to the most common underpinning solutions.

By injecting Geopoly™ into the ground underneath your home, we can increase the load-bearing capacity of your home’s foundation soils. Geopoly™ works through chemical expansion pressure, which is completely controllable and safe.

If your home is subsiding due to weak or aerated ground, Geopoly™ will make the ground solid and raise the foundations to restore structural integrity.

Repair your home’s subsidence fast with Geopoly™.

GeoPoly™ can raise and underpin foundations

Need an underpinning solution?

Need an underpinning solution?

The advantages of our underpinning solution

Raises Foundations

Raises Foundations

If your foundation is subsiding, Geopoly™ can raise it. Cracks may even close, saving you money in the long run.

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.

10 Year Warranty with Buildfix

Guaranteed Success

We guarantee our Geopoly™ underpinning solution will stop your homes subsidence.

The advantages of our underpinning solution

What our underpinning
customers say

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What our underpinning
customers say

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Our underpinning solution promises:

  • FREE structural assessment
    Our team 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.
  • Permanent repair of subsidence
    Using our techniques and proprietary technology GeoPoly™️, we can underpin and lift homes permanently. What we fix stays fixed. Everything comes with a 10-year warranty.
  • Lower 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 inspection.
  • Transparent 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.
  • Minimal disruptions to your life and home
    With our innovative, industry leading technology, repairing your home’s subsidence shouldn’t take more than a day, or two. We don’t excavate or pull anything apart.
  • Mobile teams equipped with latest technology
    Our underpinning crews 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’s might be subsiding and require underpinning.

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