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Interlocking Concrete Blocks

A versatile concrete block

Interlocking concrete blocks, are a versatile product that can be used for a range of applications. Our high strength are an effective flood defence, block wall, storage bay or retaining wall solution.  If you are in need of interlocking concrete blocks for a project of any kind, get in touch today to find out more about our hire and installation services.

Interlocking Concrete Block Dimensions

LG8 Interlocking Concrete Block

Length1600 mm
Height800 mm
Width800 mm
Weight2400 kg

LG6 Interlocking Concrete Block

Length1200 mm
Height800 mm
Width800 mm
Weight1800 kg

LG4 Interlocking Concrete Block

Length800 mm
Height800 mm
Width800 mm
Weight1200 kg

Interlocking Concrete Block Hire

We offer a reliable and fast delivery service so if you need interlocking concrete blocks in a hurry, don’t hesitate to get in touch. All of our blocks are BS EN 1317 certified and our expert team can help you with installation if you need assistance.

Interlocking concrete blocks come in a range of sizes, from 2 sections all the way up to 10 sections. 4, 6 and 8 section concrete blocks are the most popular sizes, but you may require different sizes depending on the nature of your project.

An 8 section interlocking concrete block weighs 2400kg and measures 1600mm x 800mm x 800mm. Every concrete block contains a lifting pin, which makes it simple for you to rearrange the blocks as and when you need to. However, we can reconfigure the blocks if you need us to.

LG8 Interlocking Concrete Lego Blocks

How Do Concrete Interlocking Blocks Reduce Risk?

Interlocking blocks can be configured into temporary retaining walls and barriers that prevent land slippage on construction sites, shore up foundations during groundworks, and create a secure physical blockade to protect workers.

Once stacked and secured, the blocks are impossible to move and can withstand water pressure and fire, acting as a barricade to control flood waters and preventing a fire from breaching a perimeter.

These blocks are used in countless scenarios as a safety precaution, whether to mitigate environmental risks, prevent unauthorised access, or act as a partition to hold back soil or store loose materials.

Stackable Concrete Blocks from Clearway

Concrete Interlocking Block Features

Clearway provides concrete interlocking blocks in various sizes and weights and can recommend the right blocks depending on the purpose and the shape of the structure you’d like to construct on your site.

The above tables show the dimensions available, although alternative sizes may be available on request. Features include:

  • Robust interlocking pins and lifting pins to allow for swift removal or reconfiguration to adapt to your requirements.
  • Inclusive delivery and erection services, with specialist listing equipment available depending on the size and structure needed and accessibility.
  • High-quality precast concrete that can withstand extreme pressure, force, and weather conditions.
  • Versatile blocks that can be stacked vertically or horizontally or laid out in a grid pattern to an array of heights, widths, and depths.

If you wish to construct a retaining wall, our engineers will discuss the size, weight, and position of the wall to ensure your selected blocks are suitable, recommending higher density, heavier blocks where necessary to provide the right supportive strength.

Clearway Concrete Barrier Blocks

Uses of Concrete Interlocking Blocks for Site Safety Management

Concrete interlocking blocks are a popular option for construction site managers because their natural fire resistance, the weight of precast concrete, and the flexibility of the configuration make them suited to many applications.

Fire Protection

Concrete blocks are fire resistant, owing to the concrete mix, the strength of solid concrete and the thickness of each individual block. They can act as a fire break or a temporary containment area, either as an emergency shelter or to protect high-value assets and machinery.

Storage Bays

Blocks can be erected as a storage bay for materials such as grit, salt, and sand or as a storage facility for waste or recycling. Separating waste items or soil from the working areas of a site ensures safety, efficiency and keeps waste products in a particular place until collection.

Retaining Walls

Retaining walls are used on sites where there is a risk of land slippage or mudslides, which can potentially be extremely dangerous. Walls are also used to support recently dug foundations, keep materials in a designated space and prevent spillages in high winds or wet weather when soil and loose materials are more likely to move.

The strength of concrete interlocking blocks also lends itself to ballast applications, with blocks erected as a counterweight to keep scaffolding and other structures secure.

Building free-standing walls

Our solutions can be used to build walls for floor barriers, traffic segregation and security barriers.

They can also be used as a security solution in areas where you need to prevent unauthorised vehicle access. It’s quick and easy to section off an area with interlocking concrete blocks, and they are sturdy enough to withstand the impact of a car.

Concrete Barrier HIre

Other Applications

They are also effective for traffic management as well. For example, if you are hosting an event of some kind and you need to direct traffic and protect pedestrians from busy roads, interlocking concrete blocks are the perfect solution.

In flood prone areas where there is a need for defences that are quick and easy to install, interlocking concrete blocks can be very effective. They are simple to install and stack, so flood defences can be erected very quickly.

These are just some of the potential applications for interlocking concrete blocks, but they can be used for all different kinds of projects. If you give us a call, we can discuss your needs and help you to decide which size of interlocking concrete blocks is right for you.

All of our concrete blocks are very cost effective and it is incredibly simple to install them and change the configuration. They are also very durable so there is little need for maintenance.

Concrete Jersey Barrier

Related Blocks

  • Concrete Jersey Barriers – these alternative blocks are primarily used as a traffic management and containment asset. They can be configured in long, horizontal lines to prevent vehicles from crossing median lines or to address safety risks where road workers are adjacent to the carriageway.
  • Temporary Vertical Concrete Barriers (TVCBs) – TVCBs are used as physical vehicle barriers, to secure entrances, and as a traffic control system for events and construction sites. They are crash tested and can be used as Vehicle Security Barriers or a Hostile Vehicle Mitigation strategy.

We may advise an alternative solution to an interlocking concrete barrier depending on your individual needs. If your primary concern is traffic management or protection from fly-tipping and unwanted guests, we offer precast solutions such as jersey barriersTVCBs and Heras fencing.

Whether you are building a retaining wall, trying to manage traffic, or you need to improve security, we can help with all of your interlocking concrete block hire needs, so get in touch today and we can discuss your project.

security mobile patrols

Why choose Clearway?

Clearway are long serving specialists in construction site security, perimeter, car park security, public space, highway and vacant property security. Having partnered with authorities such as the emergency services, construction businesses and transport sites, we know the ins and outs of site security and pass on our extensive knowledge to each of our clients.

Contact us now

Contact our experts now to discuss your requirements and get a quote from us.

Call 0800 085 8695 or email us at

Frequently asked questions

Interlocking blocks are used in numerous applications, and the best-suited blocks will vary with applications, with different considerations for retaining walls, flood defences or temporary vehicle barriers.

For example, a blockade to prevent vehicular access will normally need to be tougher than a material storage bay to ensure it can deter intentional trespassers. Clearway are happy to offer professional advice on your requirements.

Yes, we operate nationwide and can dispatch an installation team to move and reconfigure our concrete interlocking blocks as and when required. Just speak to one of the Clearway specialist team.

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