6 Things You Should Consider Before Hiring An Underpinning Contractor

resin injection underpinning

Underpinning services typically include engineering fees and other miscellaneous costs. Nonetheless, there are some instances in which you may incur additional costs. To avoid being overcharged, you can request that your contractor adheres to a set schedule. Discuss how you want to proceed with the project with your contractor and be transparent about your budget and expectations.

Agree on a specific timeline and total cost for the project, seek clarification, and address any concerns you may have about the project. There should be a set price for an underpinning service that includes all costs, including soil tests, engineering reports, and site inspections. All work and materials should also be included in the price.

Contact at least two or three foundation companies and ask for a free evaluation, information, and a price quote so that you can compare prices and services.

Question 1: Do I require the services of a structural engineer?

Any underpinning project requires an expert assessment by a structural engineer. Apart from providing professional advice, an engineer’s report is required to obtain the necessary permit to proceed. Because the majority of structural restoration contractors include a structural engineer as part of their underpinning service package, you are not required to obtain a separate assessment. You can contact a contractor directly, and they will prepare everything for you.

Question 2: Are there any other possibilities?

Underpinning can be a time-consuming and costly process. If your home requires underpinning and you and your family are not yet prepared, you may wish to consider the resin injection underpinning technique. Resin injection can compact loose soil and level a structure. Additionally, it is faster than other methods of underpinning. Nonetheless, the design and conditions of a structural engineer are required.

Question 3: Will underpinning provide a long-term solution?

Depending on the soil type beneath your property and the type of underpinning method used, you can determine whether or not your foundation problems can be permanently resolved. Experts in foundation underpinning give honest advice about which method is best for your home.

Question 4: Can I self-underpin a house?

Even if you work in the construction industry or have a working knowledge of the subject, it is best to leave the task to professional builders. Underpinning is a complicated process, and while resources and do-it-yourself instructions are readily available on the internet, attempting it on your own can jeopardise the integrity of your home structure.

Experts strongly suggest that you hire a well-known building and underpinning expert who has a lot of experience to make sure that the work will be done correctly and that it will be done well.

Question 5: What is the underpinning?

Underpinning is a lengthy process that typically takes around four weeks, depending on the extent of the damage. Following the assessment, preparation of reports, and other work, your builder will either use machinery or dig holes beneath the existing foundation and fill them with concrete. They will then replace or reinforce existing structures as necessary.

Question 6: During underpinning, is it necessary for me to move out of the house?

Generally, underpinning repairs and the associated work is not disruptive. However, it can be inconvenient. Consult your builders regarding their preferred course of action. Some builders may ask you to move out of your home while the work is being done.


Underpinning your property to ensure its safety and structural integrity is an investment, but one that is well worth it. One way to save money is to only work with a reputable and skilled structural restoration contractor.

Concrete Underpinning Vs. Resin Injection: Differences And Benefits

For as long as mankind can remember, concrete underpinning was the only way to support a property’s foundation. This scenario changed around three decades ago with the introduction of resin injection underpinning.

It has grown in popularity throughout the world and is preferred by many over the more conventional option. Which option, then, should you choose? The answer is resin injection underpinning, and here’s why.

Differences between Concrete and Resin Injection

Concrete Underpinning

Concrete underpinning has a long and functional history, which is what the majority of people look for when deciding on foundation strengthening methods.

Additionally, there are two types:

  • One involves filling the area beneath the foundation with concrete until it reverts to its original level.
  • Another way is to drive concrete nails or pilings into the ground and attach them to the foundation below the ground to keep it in place.

The most frequently used type of concrete underpinning is for small projects. Even though it is a tried and true technique, it has a slew of disadvantages, including being slow, labor-intensive, and an all-around messy process.

Resin Injection Underpinning

While it is a much more recent and contemporary method, particularly in comparison to concrete underpinning, it has largely demonstrated its utility and practicality. Some people also use the resin injection method to make resin driveways and to make their backyards stronger.

The resin injection method entails drilling small holes and openings into the ground beneath the foundation and injecting an eco-friendly resin material into them. The resin expands beneath the foundation, repositioning the foundation in its proper position. As more resin is filled in, the property gradually improves.

However, if a large gap beneath the property needs to be filled, resin injection may not be the most cost-effective method. However, resin injection underpinning has many advantages over concrete underpinning, some of which are shown below.

The Benefits of Resin Injection

  • It’s a Quick and Efficient Procedure

Pouring concrete to reinforce the foundation and waiting for it to cure takes some time. Contractors will need to dig through areas surrounding the foundation, clear them, and then add supports to ensure that they remain in place throughout the process. With resin injections, workers only need to make small holes in the foundation and then fill them with resin.

  • There will be no mess to clean up afterward

The extensive excavation required to fill concrete using the traditional method typically results in a massive mess that must be cleaned up afterward. Even though the majority of contractors will take care of the cleaning, it will be obvious that significant structural changes have occurred in the area. Additionally, in some instances, you may be required to learn how to clean up the concrete mess around the job site and make some preparations.

  • It Doesn’t Require You to Evacuate

Since concrete underpinning entails extensive construction and digging beneath the property to reinforce its foundation, homeowners must evacuate and relocate until the process is completed.


Not only that, but the large machinery disrupts the neighbor’s daily routine and generates a great deal of noise. On the other hand, resin injection does not need to be evacuated, and it usually takes a day or two to do.

Why use resin injection underpinning for your foundation?

If the foundations of your building sink or crack, it can be a serious problem with the potential to cause major damage, with expensive repair costs and even more left over.

When looking for a solution, you can, of course, consider traditional ways of supporting concrete. But the truth is that it will not work in many scenarios, especially if there are reactive waters or clay soils. Even many commonly used chemical stabilization methods offered by other companies are not designed to solve the problem in such situations. Melbourne Underpinning Group understands this and, using decades of experience in the construction sector, has created a revolutionary system that delivers resin injection underpinning to your building. In this way, the work is done for the first time and in a cost-effective way.

This approach will effectively increase your foundation and give you the strength you can rely on, leveling and reshaping the entire structure. Using the traditional reinforcement method can also be time-consuming and disruptive. You may also have to move for a long time while the work is being done, which will expose you financially, making things even bigger. However, with the Melbourne Underpinning Group approach, the process is relatively fast, which means that congestion, is limited for residents.

Choosing a foundation Company

Get offers from different suppliers and compare them with our underpinning services in Melbourne. Tenders should be detailed and explain what is included, what is not included, and the cost of each service. We demonstrate the costs of removing and replacing concrete slabs, post-work pipeline inspections, and technical inspection services during construction, and labour compensation.

If it’s difficult for you to compare offers, ask anyone who has recently worked for a foundation company for advice. Questions like:

  • Are they friendly and considerate?
  • Have you experienced unexpected cost differences?
  • Did the contractor actually do the work as promised?
  • Did the contractor fail to clean up any clutter that occurred during the work?

At Melbourne Underpinning Group, we provide state-of-the-art foundation repairs and services to commercial and residential neighborhoods to provide informed solutions on a consistent basis. We combine our years of knowledge and expertise and use the latest techniques and equipment to provide quality foundation repairs and support solutions, stopping all kinds of foundation problems in their tracks at a very effective price.

Our Resin injection underpinning services

Resin injection underpinning is a form of trenchless rehabilitation that we offer to all our clients. The process involves the pressure injection of resin into cracks, holes in concrete or other defects as part of a chip-free rehabilitation effort.

Resins are used to fill these holes to make them stronger and more waterproof. We produce injection resins for all our clients because they are so effective in repairing many different types of problems in pipelines, underground tunnels, and more. The resin mixes with water and makes a liquid that can be pressurized and injected into the ground.

Get that satisfying feeling

A resin injection underpinning is a great choice if your property is damaged by flooding, dry or outdated pipes. This method of rehabilitation without canals is fast, cheap, and leaves no problems. Contact us today and let us help you start your project immediately. You should always contact our team before embarking on any type of home improvement project, such as a resin injection, as it is not suitable for all properties depending on the type of damage and severity.

Tips For Hiring The Best Home Underpinning experts

Are you in dire need of the foundation of your home to be repaired? If so, you need to make sure you only hire the best house-underpinning experts in the area. These tips will help you make sure you’re hiring the right people and also tell you what all things make Melbourne Underpinning Group expert in this industry. Continue reading for more tips to help you choose the underpinning experts to hire.


Experience is important when searching for the right house underpinning experts. It’s because your foundation is the most important part of your home. You need someone who can fix any problem. Ask them when and how many homes they’ve worked on. And what type of work was done? Knowing more about their past work can help you feel more confident in your ability to get the job done correctly, which will cover any potential issues. Melbourne Underpinning Group has been serving for years and has established a name in this industry. Now our vision is to use that vast experience and knowledge to give you a long lasting foundation.

Our team at Adelaide Underpinning Group working on a house in Rose Park, Adelaide


Recommendations are also important when you’re looking for house underpinning experts to assign them work. It would be a good idea to ask family members and friends for their recommendations on who they would recommend for you to hire. It is a smart idea to look online to find out what other people think about the expert you are considering hiring. It is important to do your research so that you can make the best decision for your home and all of its needs. Melbourne Underpinning Group is one of the most trusted underpinning experts in Melbourne. We have earned trust throughout the years with our honest work.


Before you hire anyone, make sure to get estimates from several house underpinners. This is especially important if your budget is limited and you want to see exactly what their prices include. Ask them for a detailed quote that includes the cost of all materials, labor, and rental equipment. It is important to let them know that you are looking for other estimates. Ask them if they will match any lower prices.

It can be hard to choose one of the many house sub-contractors that you want to hire. But knowing the criteria and factors can make it easier. You should ensure that you understand the estimates and what is included. You should trust a professional. These, along with recommendations and reviews, are crucial to make the right decision. The best underpinners in Melbourne are here for your repairs and renovations.

Hire our professionals?

If you are looking for a foundational solution for your Melbourne property, our professionals will help you find the best one. It is a wise decision to hire a skilled underpinning service provider. They will listen to what you need, evaluate the site, and recommend a cost-effective solution that meets your budget. Contact our Melbourne Underpinning Group if you need an experienced contractor. We will ensure that you and your neighboring properties do not suffer from our solutions. Melbourne residents can contact us if they have any concerns about commercial land residential underpinning.

How Does Underpinning Work?

“Underpinning” refers to the process of strengthening an existing foundation to increase load-bearing capacities. It is often used to restore old buildings, pop-top renovations (add a new floor to a home), and condo conversion (subdividing the property into multiple units which require additional load-bearing – such as multiple bathrooms or kitchens). You should consider underpinning if there are cracks in the foundation or plans for a taller structure.

An underpinning procedure is used for building and finishing a basement within the existing building. Underpinning involves the deepening of an existing foundation (resting upon poor strata) and putting it on deeper soil strata with higher bearing capacities. It is a method to strengthen a solid foundation.

This method which is traditional is mass concrete underpinning. This technique involves digging a section below the foundation of a building in controlled stages. At the depth where suitable bearing strata. This method is suitable for shallow depth underpinning and is very cost-effective.

 A foundation underpinning is a process to increase strength and structural integrity . An expert can place an underpinning structure underneath your home. This will give your foundation additional stability.

Image is of an underpinning in Adelaide by our team Adelaide Underpinning Group

Many cases of concrete underpinning involve unstable or defective foundations. Such foundations are usually caused by the age or changes in the ground around or below the existing structure.

Underpinning will also be required in the renovation and rehabilitation industry, as investors are planning to add more floors to the property. The foundation must support additional weight if you plan on adding a third or fourth floor to a two-story property. This is possible because the foundation and above-ground structures are protected by the underpinning process.

There are many ways to underpin. How ever, not all methods require structural engineers.

The “pit method”, which is also known by the name of concrete underpinning and has been used for over a century, is the most common. This method employs hand-dug holes that are placed 8-12 feet apart under the existing foundation and then filled with concrete. This method is very popular due to its simplicity of engineering and low-cost labor.

Beam and foundation underpinning (also known as beam and base) is a more complicated method. It involves embedding a concrete beam made from cast concrete. The beam is reinforced which extends to concrete piles beneath the beam. This spreads the load-bearing strain across multiple points.

Why Underpinning is Important?

Underpinning can be important when the foundation of a property has been compromised and is no longer able to bear an additional load. Underpinning is used in both these cases to repair the damage and maintain the property’s structural integrity. Without underpinning, the structure could quickly collapse, causing more damage than underpinning.

No matter if your foundation is damaged from earthquakes or erosion, or if you just want to increase the property’s weight, it is important to have an experienced structural engineer consult you before underpinning. Make sure you choose a contractor who has worked with underpinning. We can provide you with financing as well as guidance during your renovation project.

Know The Importance Of Underpinning

 Underpinning refers to strengthening and reinforcing a foundation for a structure. It is usually done by increasing the depth and breadth. There are many reasons why underpinning is necessary. Below is a list to help you understand the unique utility of underpinning.

If a structure requires underpinning then it is due to the following reasons: 

  • The original foundation isn’t strong/stable enough for the current structure.
  • It was not the original purpose of the structure. Therefore, foundation reinforcement is required.
  • The soil cannot support the weight of the structure.
  • A second story is being added. This will require deeper foundational feet to support greater load-bearing capacities.
  • It’s cheaper to repair/reinforce rather than to buy new one.
  • Structure’s security has been compromised by earthquakes, droughts, floods, and other acts of God

A simple way to think about underpinning is this: any outside force that compromises the strength, integrity, and functionality of your foundation/footing is a reason to underpin (provide reinforcement/structural support).

Underpinning in construction is the process of strengthening and stabilizing a building’s foundation. If it wasn’t done, it could prove to be dangerous. What are the advantages of underpinning a structure or building? These are some of the questions you might ask if you’re told by a supervisor that your building requires underpinning. 

Following are some of the advantages and reasons one should think about: 

1) Existing foundations are weak or unstable. Underpinning will fix these issues.

2) The building’s use has changed like the owner has changed its purpose.

3) The soil properties on which the building is built have changed – it could have been affected by subsidence or movement of the ground. Underpinning will strengthen the structure in such cases.

4) Addition of new buildings or structures to the area. A new house built next to an existing home may require underpinning to help strengthen it.

  • The land cost has risen. If land prices rise significantly, it may be cheaper to use underpinning to improve the property (perhaps adding another floor) than to purchase more land.

To get the best underpinning companies near the locality then you just need to search on Google “Underpinning companies near me”. Then you will the best companies near your house.

Types underpinning

 There are three primary types of underpinnings: 

1. Mass Concrete Underpinning/Mass Pour- Mass concrete underpinning might be the oldest and most commonly used foundation repair technique on the planet. This involves digging holes or voids below a weak foundation and pouring new cement/mud/filler beneath the original foundation. This provides extra support and depth to the foundation.

2. Beam and Base Underpinning-This is a modern type of underpinning, where a reinforced concrete/steel beam is constructed below, above or in replacement to the existing footing. The beam then transfers the building’s mass to the concrete/metal base, which is strategically placed at load-bearing places.

This is slightly less sophisticated than mass concrete underneath pinning, in that it is adding concrete/steel to an older concrete/steel base and not replacing it.

3. Mini-piled Underpinning- This type allows for the maximum flexibility regarding where access is restricted/restricted, and how significant environmental pollution is. Mini-piled underpinning refers to situations when the structure’s loads need to be transferred to more load-bearing soil at greater depths (occasionally up to 50 feet).