Interlocking blocks

Interlocking blocks

Legato® and Duo™ Walling Systems by Elite Precast Concrete

Elite Precast Concrete is a leading UK manufacturer and supplier of precast concrete interlocking blocks, offering versatile, durable and cost-effective walling solutions for a wide range of sectors.

Manufactured at our Shropshire facility, our interlocking block systems, including Legato and Duo walling, are designed to deliver strength, flexibility and long-term performance across multiple applications.

Our concrete interlocking blocks are engineered to meet BS EN standards and are available in a wide range of sizes, enabling the rapid construction of free-standing walls, storage bays, containment areas and temporary structures without the need for permanent foundations.

Precast Concrete Interlocking blocks

Legato® Interlocking Blocks

Legato® blocks feature a smooth-faced finish, making them ideal for applications where structural performance is important. They are commonly used for quarry and material storage bays, retaining walls, security barriers, and commercial or industrial walling.

Duo™ Interlocking Blocks

Duo™ blocks offer a robust, cost-effective solution for heavy-duty applications. Their proven interlocking design ensures stability, speed of installation, and ease of relocation, making them suitable for temporary works, flood management and waste management storage bays.

Precast Concrete Interlocking blocks

Why Choose Elite Precast

With decades of precast expertise, in-house engineering support and a proven delivery record on projects of every scale, Elite Precast is the partner specifiers trust. We pair robust, repeatable manufacturing with the flexibility to engineer bespoke solutions when a standard product will not do.

Benefits of Precast Concrete Interlocking blocks

Our modular interlocking block systems provide an economical alternative to traditional concrete construction, reducing build time and overall project costs.

Elite Precast Concrete offers a complete end-to-end service package, including design guidance, competitive quotations, transportation logistics and installation through our approved contractor network.

  • Class A1 Fire Classification — All our concrete interlocking blocks achieve Class A1 under EN 13501-1, meaning they are non-combustible, will not burn, crack or emit toxic fumes and are suitable for use within Fire Protection Plans.

  • Sustainability and longevity — Manufactured in the UK to minimise delivery miles, our blocks have a design life exceeding 100 years, supporting sustainability targets and long-term asset performance.

  • Technical support and compliance — We provide full technical and product support, including CAD drawings, technical data sheets and compliance and certification documentation to assist engineers, designers and estimators during project planning.

  • Easy and fast construction - Our interlocking blocks are designed for rapid installation without the need for mortar, foundations or specialist fixing systems in many applications, allowing for installations to be assembled quickly using standard lifting equipment, significantly reducing construction time, labour costs and site disruption.

  • Exceptional durability and strength - Manufactured from high-quality precast concrete, Elite interlocking blocks are engineered to withstand demanding industrial, commercial and agricultural environments. Their substantial weight and robust construction provide outstanding stability and resistance to impact, weathering and heavy loading, ensuring long-term performance with minimal maintenance. Designed for decades of service, they continue to deliver reliable structural integrity even in the most challenging conditions.

  • Rapid availability from stock - We maintain extensive stock levels of its most popular interlocking block sizes, enabling fast nationwide delivery when projects demand immediate action.

  • Affordable and flexible solution - Elite interlocking concrete blocks provide a highly cost-effective alternative to traditional cast in-situ concrete structures. With no permanent foundations required for many applications, reduced installation costs and the ability to dismantle, relocate and reuse the blocks, they offer exceptional whole-life value. Their versatility allows them to be used for retaining walls, storage bays, flood defences, security barriers, temporary works, bulk material handling and countless other applications, providing a flexible solution that can evolve alongside changing business needs.

Our precast concrete interlocking blocks combine practicality with versatility, making them an ideal choice for projects requiring speed, reliability and adaptability. Simple installation and quick delivery help maintain efficient project programmes, while the robust nature of the blocks ensures long-term performance in demanding environments.

Benefits of Precast Concrete Interlocking blocks

Applications of Interlocking blocks

Elite Precast Concrete interlocking blocks are suitable for a wide variety of commercial, industrial and infrastructure applications, including:

  • Electric Vehicle Containment Areas — Used to safely isolate damaged EVs where there is a risk of thermal runaway or fire, supporting site safety and fire protection planning.

  • Emergency Shelters — Rapidly deployable structures for protecting high-value assets, machinery or critical equipment.

  • Fire Protection and Fire Breaks — Concrete’s inherent fire resistance makes interlocking blocks ideal for fire containment zones, fire breaks and use within a Fire Protection Plan (FPP).

  • Flood Defence and Flood Protection — Suitable for temporary or semi-permanent flood barriers, providing effective protection for people, property and infrastructure.

  • Freestanding Walls and Barriers — Ideal for traffic segregation, security perimeters, flood barriers and site management.

  • Retaining Walls — Effective for managing changes in ground level, landslip risk, or material retention, subject to appropriate engineering checks.

  • Security Solutions — Used to restrict unauthorised vehicle access and enhance site security.

  • Storage Bays — Commonly used to construct bays for grain, grit, sand, salt, scrap metal, waste and recycling materials.

Applications of Interlocking blocks

Compliance & Technical Support

All Elite Precast Concrete interlocking blocks are engineered to meet BS EN standards and achieve Class A1 fire classification under EN 13501-1 — meaning they are non-combustible, will not burn, crack or emit toxic fumes, and are suitable for inclusion in Fire Protection Plans.

Temporary Structures & Planning Considerations

External storage bays and walls constructed using interlocking concrete blocks are typically considered temporary structures. In many cases this means planning permission is not required, as the blocks can be dismantled and relocated with ease — though we always recommend confirming requirements with your local authority. Temporary structures can also result in lower or zero business rates and are generally more cost-effective to build than permanent alternatives.

Engineering & Safety Guidance

Elite Precast Concrete always recommends that all wall designs and configurations are checked and approved by a qualified structural engineer to ensure suitability for the intended application, loading conditions and site environment.

We provide full technical and product support, including CAD drawings, technical data sheets and compliance and certification documentation to assist engineers, designers and estimators during project planning.

Compliance & Technical Support

Gallery

Important downloads

  • Duo Interlocking Blocks
    PDF1.0 MB
  • Legato Interlocking Blocks
    PDF949 KB

Frequently Asked Questions

What are interlocking concrete blocks used for in renewable energy projects?

Interlocking concrete blocks are used across renewable energy infrastructure for containment walling, wind farm ballast, battery storage bays, solar site protection and grid infrastructure. Their modular design makes them ideal for both temporary and permanent installations.

Why are interlocking blocks ideal for renewable energy sites?

They offer fast installation, durability, and flexibility. Blocks are delivered ready to use, require no curing time and can be easily reconfigured or relocated as project requirements evolve.

How quickly can interlocking concrete blocks be installed?

Installation is extremely fast. As a precast solution, there is no need for shuttering, curing or formwork, helping projects stay on schedule and reduce labour costs.

Do interlocking blocks require mortar or foundations?

No. Interlocking blocks are dry-stacked without mortar or fixings and can typically be installed on a suitable level surface, minimising groundwork and site disruption.

Are interlocking concrete blocks strong enough for harsh environments?

Yes. Elite Precast blocks are manufactured using high-strength 50N/mm² concrete, making them suitable for demanding conditions such as coastal wind farms and exposed upland sites.

Are interlocking blocks suitable for battery energy storage systems (BESS)?

Yes. They are widely used for battery storage bay walls, fire containment structures, and site segregation, providing a safe and adaptable solution for BESS installations.

Are interlocking concrete blocks fire resistant?

Yes. The blocks are Class A1 fire rated in accordance with EN 1369, meaning they are non-combustible and suitable for high-risk environments like battery storage facilities.

Can interlocking blocks be reused or relocated?

Absolutely. Interlocking blocks are 100% reusable and recyclable, allowing them to be dismantled and reused across multiple phases or projects while reducing waste.

What renewable energy applications are interlocking blocks used for?

Common applications include wind farm ballast and crane support, battery storage containment walls, solar farm boundary and protection walls, temporary or permanent site infrastructure, and material storage or grid support areas.

What types of interlocking blocks are available?

Elite Precast offers Legato® interlocking blocks for heavy-duty structural use and Duo™ interlocking blocks for more compact, versatile applications. Both are available in a range of sizes and weights.

Why choose Elite Precast interlocking blocks?

Elite Precast offers UK manufacturing for reliable supply, ISO 9001 quality-controlled production, technical support from concept to delivery, and nationwide delivery with off-the-shelf availability.

UK Manufacturing & Nationwide Delivery

Every product is manufactured in the UK to recognised quality standards and delivered nationwide on a fleet built for site access. The result is shorter lead times, full control over quality, and the confidence of working with a British manufacturer.

Contact Us

Have a question about our products, or a project in mind? Send us a message and our technical team will get back to you.