Things to Know When Waterproofing a Retaining Wall

What Are the Benefits of Flat Top Blocks?

Flat top blocks are generally the finishing piece of any structure which harnesses Interlocking Concrete Blocks. But do they have any benefits outside their usage? Do they lose any of their effectiveness because they are different? We will discover all of that, and more, in this blog.

Today, we will answer the question ‘What are the benefits of flat top blocks?’

At PPC Concrete Products, we are here to provide solutions for your construction needs, from the person working their own part-time project, to commercial clients, and everyone in-between.

Monthly construction output had risen an estimated by an 1.6% value in June 2023, and we would like to think our accessible concrete products had a small part to play by giving our clients easy access to reliable and easy-to-use construction solutions.

Interlocking Concrete Blocks and Flat top Blocks

Is it better to use bricks or concrete blocks?

Interlocking Concrete Blocks are a simple yet effective building solution that has the advantage of being used in a multitude of ways. In many aspects, it can actually override the need to use traditional brick and mortar builds. So what makes them special?

Interlocking Concrete Blocks have the ability to securely attach to each other without the need for mortar, or any separate binding element. This is due to the fact that these blocks have specially made studs and recess at the top and bottom of the blocks respectively.

Once aligned and connected, it is almost impossible to detach the blocks unless you have the use of heavy lifting equipment. Because concrete is naturally heavy and durable, using these blocks grants you the ability to create structures that are structurally sound, and resistant to a variety of factors.

As a result, you are left with a wide level of possibilities to use Interlocking Concrete Blocks as the basis of a structure ranging from retaining walls, to temporary sites, and so much more.

Uses of Interlocking Concrete Blocks

Here is a list of some of the uses that Interlocking Concrete Blocks can facilitate.

  • 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

Flat top blocks explained

The flat top block, sometimes known as a ‘flat top interlocking concrete block’, is a block that is characterised by having the mechanisms of an Interlocking Concrete Block, but without the studs at the top of the block.

As a result, the flat top block is exclusively used as the finishing blocks of any structure that requires the use of Interlocking Concrete Blocks.

The flat top block, once placed at the top of a structure, should not be stacked upon. As there is no secure attachment on the top of a flat top block, stacking on top of it will lead to hazards that could injure or kill someone. This block only retains the recesses at the bottom, to allow the studs of the block beneath it to connect securely.

Flat top blocks are made in such a way to prevent possible trip hazards, for structures such as a small retaining wall. Additionally, it allows the constructor to know which block needs to be on the top.

What are the benefits of flat top blocks?

What is a flat top concrete block?

Although they may seem like a normal concrete block, the flat top variant of Interlocking Concrete Blocks retain most of the benefits of an Interlocking Concrete Block. They are as follows…

Secure attachment

Flat top blocks have the benefit of maintaining most of the secure attachment granted by a regular Interlocking Concrete Block. This is because it retains the recesses underneath it. This means that a regular Interlocking Concrete Block can attach underneath it with no mortar required.

The correct aesthetic

Additionally, flat top blocks have an aesthetic edge over its regular counterparts. This makes it the best option to place at the top of your Interlocking Concrete Block structure. Flat top blocks, along with regular Interlocking Concrete Blocks can be painted, unless you opt for the rock face options we offer.

Weight and height

The weight of the flat top blocks we offer may vary nominally, but not enough to constitute a visible difference. When it comes to the dimensions of our flat top blocks, there may be a reduction of height simply due to absence of studs protruding from the top of the blocks.

Just as long-lasting

Our flat top blocks retain the durability and weatherproof characteristics of our regular Interlocking Concrete Blocks. So you don’t have to worry about the top of your structure being weaker than the rest.

Professional and completed structures

If the top of your structure created by Interlocking Concrete Blocks is not finished with a flat top block, it can make your structure look incomplete. The protruding studs at the top of the structure could also present a hazard, depending on the height of your structure.

Which structures can have a flat top block?

Almost any structure you create using Interlocking Concrete Blocks can use a flat top block as its finish block. Of course, there may be instances in which a flat top block is not necessary, this may be relevant to temporary structures,

Do bricks have flat top blocks?

In certain instances, there may be specific bricks that can go on the top of a brick-built structure, but bricks already have a flat top. This means that there are generally no ‘flat top’ variants of bricks.

Is a brick more secure than Interlocking Concrete Blocks?

Due to the difference in weight between an Interlocking Concrete Block, and a brick, the heavier Interlocking Concrete Block is going to have a more secure structure. As the heavier weight makes it less likely to be toppled or tampered with.

Furthermore, the interlocking mechanism of our Interlocking Concrete Blocks can not be undone without the assistance of heavy lifting machinery.

Bricks can also have a secure connection. However, a significant impact can easily sever that connection as a result of the lighter constitution of bricks and the use of mortar. Depending on its application, and where the structure is, mortar can become brittle and less effective over time, further increasing its weakness.

How much are flat top blocks?

Is there an easier way to make a retaining wall?

The cost of flat top blocks, like Interlocking Concrete Blocks, are dependent on the project at hand, and the size and style of Interlocking Concrete Block you require.

Providing a comprehensive understanding of the reason you require the blocks can help us provide an accurate quote for you. This can come in the form of the blueprints of your proposed structure etc.

With that being said, due to the flat top blocks being made for the top of a structure, and only having half the capacity of its counterpart’s interlocking feature, flat top blocks may be cheaper.

For complete clarity, we suggest you contact us today so we can provide a quote that accurately reflects the resources you require from us.

Purchase flat top 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 have a look at our FAQ.

In this blog, we hope to have provided key information for the question ‘`what are the benefits of flat top blocks?’ Whilst also providing additional information, including 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 until 4 PM

Tel: 01706 655245


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