Interlocking concrete blocks forming compost storage bays under an open-sided steel canopy

Fire Break and Fire Protection Walls

Legato® Interlocking Concrete Block Systems by Elite Precast

Elite Precast supplies fire break and fire protection wall systems using Legato® interlocking concrete blocks, providing a proven, non-combustible and robust solution for reducing fire spread and protecting people, property and critical assets.

Manufactured from high strength 50N/mm² concrete, Legato® blocks offer exceptional fire resistance, structural stability and durability, making them ideal for high-risk industrial, agricultural, waste and infrastructure environments.

What are Legato® Interlocking Blocks?

What Are Fire Break and Fire Protection Walls?

Fire break and fire protection walls are designed to:

  • Prevent or slow the spread of fire

  • Provide physical separation between high-risk areas

  • Protect buildings, plant, stock and infrastructure

  • Support site Fire Prevention Plans (FPPs)

  • Meet insurer and regulatory fire safety requirements

Legato® interlocking concrete blocks form solid, gravity-based fire barriers that do not rely on mortar, reinforcement or combustible materials.

Legato interlocking blocks stacked into stepped walls forming bays inside an empty warehouse

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.

Key Applications

Typical Fire Protection Applications

Legato® fire break and fire protection walls are widely used in:

  • Waste and recycling facilities

  • Agricultural buildings and farmyards

  • Biomass and composting sites

  • Material storage bays (woodchip, RDF, grain, waste)

  • Industrial and manufacturing facilities

  • Battery energy storage systems (BESS)

  • Fuel and chemical storage areas

  • Ports, depots and logistics centres

  • Public sector and infrastructure sites

Legato interlocking block wall running alongside a haul road at an aggregates plant

Benefits

Class A1 Fire Resistance

  • Non-combustible concrete construction

  • Class A1 Fire Resistant in accordance with fire safety standards

  • Suitable for use in Fire Prevention Plans (FPPs)

  • Recommended by many insurers for fire break walls

High Structural Strength

  • Manufactured using 50N/mm² concrete

  • High mass helps contain fire and resist collapse

  • Interlocking design provides excellent stability without fixings

No Reinforcement – No Failure Points

  • No steel reinforcement to weaken or deform under high temperatures

  • No mortar joints that can crack or fail during fire exposure

Rapid Installation

  • Dry-stack system with no curing time

  • Cast-in lifting pins for safe handling

  • Fire protection walls can be installed quickly, reducing risk exposure

Engineered for Your Environment

Design, Stability & Compliance

Fire break and fire protection walls must be designed to consider:

  • Wall height and layout

  • Wind loading, especially for exposed sites

  • Ground bearing capacity

  • Stored material type and proximity

  • Impact risk from mobile plant

Legato® block systems are designed in accordance with BS EN 1992-1-2004 (Eurocode 2) for concrete structures.

Elite Precast provides access to its Stability & Loadings Directory to support safe and compliant design.

⚠️ Important: All fire protection walls must be checked and approved by a qualified structural engineer prior to installation.

Installation and Safety Guidance

  • Construct on a suitable, level and stable base

  • Avoid direct impact from mobile plant where possible

  • Inspect blocks and lifting pins before use

  • Consider strapping top layers in high-risk or high-traffic areas

Storage bays formed from interlocking concrete blocks at a quarry processing site

Why Choose Legato® Interlocking Blocks for This Application?

Why Choose Elite Precast?

  • Leading UK manufacturer of interlocking concrete block systems

  • Proven performance in high-risk fire environments

  • Large stock availability for rapid deployment

  • Nationwide delivery with crane offload options

  • Experienced technical and fire-risk-aware support team

Elite Precast – Non-Combustible Strength. Engineered Fire Protection. Built to Perform.

Legato block storage bays part-built beside an asphalt plant with a van parked inside

Gallery

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.