Concrete underpinning has been a highly effective construction practice for over a century. But there are some disadvantages to using this method that homeowners should be aware of when searching for underpinning contractors in Adelaide. In this article, we’ll run through what some of the advantages and disadvantages of concrete underpinning are, and explore the alternatives. 

5 Main Disadvantages of Concrete Underpinning

The 5 main disadvantages of concrete underpinning are:

  1. It can be expensive
  2. Depending on the location, underpinning can be obstructive
  3. It can be intrusive to underpin internal walls
  4. Bad access is very challenging
  5. The underpinning process can take up to 3 weeks

5 Main Advantages of Traditional Underpinning

Though it has some drawbacks, traditional concrete underpinning has many benefits that outweigh its downsides. 

The 5 main advantages of underpinning are:

  1. Concrete underpinning has been around for over a century

This method of foundation repairs is a tried-and-true method for repairing and strengthening foundations.

  1. Traditional Underpinning requires engineering 

As traditional underpinning needs an engineer to design the plans, you know you’re in safe hands.

  1. Underpinning rarely fails 

When using a licensed contractor, engineered underpinning rarely fails. 

  1. Worst case scenario: underpinning fails

No problem, the underpinning contractor can come back and make the necessary adjustments. With other methods like resin injection this cannot be done. 

  1. Underpinning is highly effective

There isn’t many scenarios were underpinning doesn’t work.

Is resin injection as good as underpinning?

No, resin injection isn’t as reliable as underpinning. It cannot be engineered and if it fails, cannot be reversed. So, we don’t recommend using a method where you can’t estimate the cost, can not rectify any mistake, or can damage the surroundings permanently.

Can Underpinning fail?

Yes, underpinning can fail for various reasons. They are:

– The underpinning was not engineered

– The method of underpinning is not appropriate for the soil conditions

– The foundation is not properly prepared before underpinning

– The load on the underpinned foundation is too much

All these reasons can lead to failure of underpinning. That’s why working with a qualified contractor with experience in underpinning is very important. Want to know how long does it take to underpin a house? Have a read of this article. 

Underpinning is a process of stabilising and restoring the foundation of a house. Having your home checked for any signs of foundation failure is important, as failing to address these issues can lead to much bigger (and more expensive) problems. Contact a local professional for advice if you notice any of the symptoms discussed in this blog post.

In this article we have been through the advantages and disadvantages of concrete underpinning, whether or not resin injection is as good as traditional underpinning and whether underpinning can fail. In summary, though it has its drawbacks, underpinning is a sound method for foundation repairs on strip footings and slabs and is much more reliable than resin injection underpinning.

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