Sub-Floor Works


Sydney House Levelling Combines Geographical Knowledge Of The Sydney Area And Surrounds With High-end Construction Experience And Expertise In House Levelling, Underpinning, House Stumps And Re-stumping And House Foundations.


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Sub Floor Works

As much as we would like to believe that our concrete slabs, foundations or flooring will last forever, the truth is that they won’t. Concrete slabs can last anywhere from 50 to 100 years in ideal conditions. However, in reality, the concrete slabs especially in older homes will only last for about 20 to 25 years. These concrete slabs are prone to cracking and breaking due to the water that seeps in through the cracks in the concrete. Concrete slabs are also prone to cracking, crumbling and breaking when the ground beneath it doesn’t settle properly.

Concrete slab, floor or foundation is what you build your garage, basement, swimming pool or house on. This is the foundation of your building. If this is not done correctly then issues are likely to arise.





Cracks in walls and around corners

Cracks in your house walls can be a sign of the shifting of the ground beneath your foundations. The ground beneath your foundations is constantly in a state of change. In most cases, this change is not visible. It is vital to understand this ground change and to make sure that your building is structurally sound.

Sinking Floors

Sinking floors and uneven floors are usually caused by subsidence due to water in the soil or ground movement. This means that the ground beneath your flooring may be moving in response to a variety of factors such as un-compacted fill, voidage from compromised plumbing services, such as storm water, sewer, or leaking water mains. This will result in the moisture content of the soils changing: in reactive clays, this will result in the ground expanding and contracting forming voids; and in sandy loams and sands, these factors will contribute to washouts, again compromising the load bearing.

Cracked Concrete

Subsidence is one of the biggest problems in modern construction. It can arise through a number of different circumstances, including changes in water tables, reactive clay soils and damage to the surrounding vegetation. As the ground shifts, the concrete that it supports will often be affected. Understanding the symptoms of subsidence is key to preventing it. This blog looks at the symptoms of subsidence to help businesses spot problems early.

Health issues

If the occupants of a Sydney building are experiencing respiratory problems, allergies, or other health issues that seem to be related to the indoor environment, poor ventilation could be a contributing factor. In the humid climate of Sydney, excess moisture in the air can lead to the growth of mold and other allergens, which can affect the health of the occupants. Installing a subfloor ventilation system can help to improve the ventilation of your underfloor space and reduce the risk of these health issues.

Musty odors

If you are experiencing musty or moldy odors in your Sydney home or building, this could be a sign of poor underfloor ventilation. In the humid climate of Sydney, excess moisture in the underfloor space can lead to the growth of mold and other fungi, which can produce musty odors. Installing a subfloor ventilation system can help to improve the ventilation of your underfloor space and reduce the risk of mold growth.  

If you notice any of these symptoms, it’s important to contact a professional levelling repair service like Sydney House Levelling. Our team can assess the situation and provide a tailored solution to correct it, ensuring that your home is safe and stable for years to come.


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We understand that every home and every homeowner’s needs are unique. That’s why we take the time to assess each project individually and provide tailored solutions to meet our customers’ specific needs.