Should I use Interlocking concrete blocks?

Can Interlocking Concrete Blocks Be Used for Garden Retaining Walls?

Retaining walls are an important feature for anyone who needs to organise land, but what is the easiest way to do this, can interlocking concrete blocks be used for garden retaining walls?

PPC Concrete Products is here to provide the answers you may be looking for whilst giving you an insight into the quality concrete options we supply. Our supplies are fit for purpose and generally provide no issues with building regulations, not to mention being safe to use for a variety of construction needs.

The demand for construction is only increasing, on a private and industrial level. Whichever side you fall into, An interlocking concrete block may be an option to help keep your site secure regardless of its shape. 

With that being said, here’s all the information you need to know for this multi-purpose building resource.

What is a retaining wall?

A retaining wall is a structure designed to restrain or land to a slope it would not naturally keep to. A retaining wall could be built in order to organise land in public places or around your own home. A retaining wall can also help to level any land that is on a slant or hill.

In terms of what can be used for a retaining wall, there are many options including gabion baskets, wood and metal, though it can be argued that the easiest and cost effective method would be interlocking concrete blocks.

The function of the retaining wall is in the name, it retains its content within a wall, and retaining walls are often used to alter the level of the land it is erected on, which usually means the land goes from being uneven, to even. 

Want to know more? Click here for an in-depth look at retaining walls.

What makes a retaining wall lean?

When a retaining wall starts to lean it can be due to a number of things including

  • Insufficient drainage, this causes additional weight to be added to the wall.
  • The wall’s material has become weak due to degradation over time.
  • External damage/purposely manipulating the wall.
  • Weak foundations or structure
  • Using sub-quality materials when constructing the wall
  • Natural changes in the environment that can happen over time.

Interlocking concrete blocks can be the most easiest and effective method when it comes to setting up a retaining wall, let us tell you some more about them.

What are interlocking concrete blocks?


As building regulations came into being in England, the requirement of having fireproof dwellings was compulsory, this was achieved by subsequent houses being made of stone and brick. Interlocking concrete blocks present a modern alternative.

Interlocking Concrete Blocks are a unique form of pre-cast concrete blocks that are designed to hold together by using pre-measured studs and recesses.​ These concrete blocks are built with unique profiles and features, which allow them to fit perfectly into each other.

Here are just some of the things interlocking concrete blocks can be used to make.

  • Material Storage bays
  • Blast walls
  • Salt stores
  • Crash protection
  • Push walls
  • Security barriers
  • Segregation bays i.e recycling centres
  • Retaining walls
  • Industrial buildings
  • Fire breaks
  • Counterweights
  • Roadblocks

The variety of uses available for interlocking concrete blocks serves to highlight the strength and durability of these blocks. Furthermore, there is generally no need for foundations to be laid before placing the blocks. 

Interlocking concrete blocks are weatherproof and extremely resilient, so unless there is a catastrophic natural disaster, or someone crashes into the blocks at a high velocity, then you can rest assured your blocks won’t move unless you choose to move them. 

What are the advantages of interlocking concrete blocks? 

Will Interlocking Concrete Block Hold Water?

Can interlocking concrete blocks be used for retaining walls?


Yes! Interlocking concrete blocks can be used for garden retaining walls, and more.

Using our blocks for a garden retaining wall is extremely easy, Aside from making sure there is adequate draining, the assembly of the blocks is simple, requiring no binding materials, they only need to be placed on top of each other, so that the studs and recesses latch to each other.

In addition to this, our interlocking concrete blocks can be stacked to a total of 9 feet, meaning the stacking capability is more than enough to ensure that your retaining wall is completely covered. 

Can I use bricks for retaining walls?


Yes, bricks can be used for retaining walls, but here are some extra steps you have to take in order to set them up for the retaining wall.

  • Make sure there is a clear and adequate foundation for the bricks to be laid on.
  • You have to stack the bricks individually, applying cement as you go in order to bind them together.
  • You may have to erect more than one wall, in the sense that you may have to add a stack of bricks in front of the wall that has already been set up against the retained area.

With these steps in mind, you will find that the process can take longer than it would with interlocking concrete blocks.

Interlocking concrete block options


Our team at PPC Concrete Products supplies different types of interlocking concrete blocks. We have a variety of options when it comes to the interlocking concrete blocks that we make.

Our blocks are made by having a casting of the dimensions mentioned below and depending on the option chosen, the cast is then filled with concrete. Each block has a Lifting pin anchor system embedded in the concrete at the point of casting – this is how the blocks are moved once the concrete is set.

After setting, the cast is then removed and the blocks are transported to their destination.

we offer the option for your block to be:

  • Standard Blocks
  • Flat Top Standard Blocks
  • Rock Face Block
  • Rock Face Flat Top Block

 Here are our size options:

  • 300 x 600 x 600
  • 600 x 600 x 600
  • 900 x 600 x 600
  • 1200 x 600 x 600
  • 1500 x 600 x 600
  • 1800 x 600 x 600
  • 400 x 800 x 800
  • 800 x 800 x 800
  • 1200 x 800 x 800
  • 1600 x 800 x 800

Half and thirds of the sizes displayed are also offered with your order if needed. 

To view these options, take a look at our gallery.

What Are the Concrete Blocks That Look Like Legos?

Purchase interlocking concrete blocks today

As an established supplier all over the UK,
PPC Concrete Products is always happy to help, which is why we encourage you to get in touch with any questions you may have or take a look at our FAQ.

In this blog, we hope to have addressed the question ‘Can interlocking concrete blocks be used for garden retaining walls?’, whilst also providing extra information in regard to construction solutions that we offer.

Take a read of our case studies to truly understand how we have provided solutions for business in the past with the use of our interlocking concrete blocks, and ultimately, how we can help you today.

Read our blog page for more insights into our passion, construction.


The Old Gasworks,
Higginshaw Lane,

Opening Hours:

Monday to Friday – 8 AM til 4 PM

Tel: 01706 655245


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