How High Can You Stack Interlocking Concrete Blocks?

How High Can You Stack Interlocking Concrete Blocks?

Interlocking concrete blocks provide a simple and effective building option for a large variety of applications, but how high can you stack interlocking concrete blocks? The team here at PPC Concrete Products are here to answer that question today!

With many types of building solutions on the market, it could be challenging to know what option would suit your needs, whether you are building temporary storage or a retaining wall.

With time and cost-efficient building solutions being needed, as construction output in Great Britain has seen an increase, alternatives to traditional brick-and-mortar builds are required for those looking to save time and money.

Interlocking concrete blocks present an alternative to some construction needs. Let us tell you more about them.

With our blocks having the ability to be stacked, it is vital to know how high they can go to ensure the stability of your build and the safety of those around it.

Interlocking Concrete Blocks – All you need to know

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. Built with unique profiles and features, which allow them to fit perfectly into each other without the use of any mortar. Instead, the cementitious blocks simply snap together with each other.

Depending on the size of the block that is chosen will affect the number of studs that are on the block. In regards to the sizing, interlocking concrete blocks don’t need mortar to be held in place. This means the speed of building is improved, whilst using less manpower.

The advantages of interlocking concrete blocks

  • Longer lasting and more durable than a Gabion basket
  • Quicker and less hassle to install
  • No need for mortar
  • No need for steel reinforcement or shuttering
  • Resistant to extreme weather conditions
  • Fire-resistant properties, mitigating the spread of fire depending on the structure
  • Little maintenance required
  • Often, no foundation is needed before installing
  • Sound resistant
  • Sustainable
  • Ability to stack them upon each other
  • Flexibility in sizes
  • Appropriate for temporary and/or permanent buildings
  • Unlikely to be displaced due to the interlocking function
  • Can be moved with standard lifting equipment

What are interlocking concrete blocks used for?

As we supply interlocking concrete blocks, we can share with you what they are used for.

  • 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

And much more.

How high can you stack interlocking concrete blocks?

What can dislodge Interlocking Concrete Blocks?

Our interlocking concrete blocks have the potential to have 5 blocks stacked upon each other. Our standard-sized blocks are 60cm in height, with 5 stacked together this would equate to 300cm, which is exactly 9 feet & 10.11 inches high. This height is more than enough for applications such as a retaining wall and so much more.

Stacking our interlocking concrete blocks is made easy, safe and secure through the studs and recesses that are on all of our blocks, once they are connected, they are not loose. The beauty of this simple method is that it eliminates the need for cement to bind the blocks together.

Can’t I do the same thing with bricks?

Brick and mortar is a tried and true method for generations, though it’s appropriate for certain situations, it doesn’t mean it is more effective than interlocking concrete blocks in other situations.

Let’s take a retaining wall for example, not only will you need a large amount of bricks, but you’ll need to make sure the foundations are level, individually place each brick whilst making sure it has enough cement on it, this is a time-consuming process and can have you spending more money on resources and workers.

You can make a retaining wall with interlocking concrete blocks with a dramatically shorter window of time, as long as the foundation is generally flat, you just place the blocks with your machinery one after another. No mortar is needed and fewer workers too.

What happens if I stack interlocking concrete blocks too high?

In this instance, stacking blocks too high may make them less stable, this is why interlocking blocks have a certain amount of applications, as wide as they may be. Like with any structure, interlocking concrete blocks can fall if stacked too high, this can be amended with secure and stable foundations, but our blocks are suitable for temporary buildings as opposed to homes.

Are gabion baskets are better alternative?

Gabion baskets don’t have as much application as interlocking concrete blocks, it also depends on the way you use them. Let’s compare them with respect to a retaining wall.

A gabion basket retaining wall will be aesthetically pleasing, especially in an environment surrounded by nature. They are heavy in weight so it will be difficult to move them once they have been placed, due to the rocks that are placed within it.

Gabion baskets are secured by wiring, over time this wiring may rust, it may break or bend under the weight that the numerous rocks within the basket are creating. The way these baskets are made is generally resilient, but you can’t account for what happens once they are placed.

Interlocking Concrete blocks may be more plain-looking, but requires a much smaller amount of effort to prepare and place, you don’t need to find and insert rocks to create the weight of the structure, you generally don’t need to worry about it at all after it is placed, unless there are freak events in nature, or accidents that may affect the area in which it is placed.

How much do interlocking concrete blocks cost?

If you are considering the cost of our interlocking concrete blocks, we encourage you to get in touch. Having a solid idea of what you intend to use the blocks for, including the space they’re going into, and how much you need will make it easier for us to give you a quote.

Understandably, the cost will be dependent on the amount required, and the sizes of the individual blocks you require.

However, if you’re still deciding whether or not to use our blocks, and would like specific questions to be answered in relation to your project, we are happy to provide all the information you need once you get in contact.

How much do interlocking concrete blocks weigh?

In regard to the weight of the blocks, it will vary from size to size, and from the concrete being used. But as an example, 1800 x 600 x 600 concrete block can weigh 1560 kg, this can fluctuate as different types of concrete have different levels of density.

Order interlocking concrete blocks today

Order 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 article, we hope to have answered the question ‘How high can you stack interlock concrete blocks?’. 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.


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Higginshaw Lane,




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Monday to Friday – 8 AM til 4 PM

Tel: 01706 655245


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