Flood Defence and Temporary Flood Barriers
Legato® Interlocking Concrete Block Systems by Elite Precast
Elite Precast supplies flood defence walls and temporary flood barrier systems using Legato® interlocking concrete blocks, providing a fast, reliable and adaptable solution for protecting people, property and infrastructure from flood risk.
Manufactured from high strength 50N/mm² concrete, Legato® blocks offer the mass, stability and durability required to resist hydrostatic pressure, flowing water and debris impact during flood events.
What Are Legato® Interlocking Concrete Blocks?
Flood Defence Solutions Using Legato® Blocks
Flood defence walls are designed to:
Prevent floodwater ingress
Reduce flood depth and flow velocity
Protect buildings, roads and infrastructure
Provide rapid-response flood protection
Support long-term flood resilience strategies
Legato® interlocking concrete blocks form gravity-based flood defence structures that rely on mass and interlock rather than mortar, steel reinforcement or permanent fixings.
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 Flood Defence Applications
Legato® interlocking concrete blocks are widely used for:
Temporary flood barriers
Permanent flood defence walls
Riverbank and embankment protection
Coastal and tidal flood defence
Industrial and commercial site protection
Infrastructure and utility protection
Emergency flood response works
Public sector and local authority projects
Benefits
High Mass & Structural Stability
Manufactured using 50N/mm² concrete
High unit weight resists hydrostatic and hydrodynamic forces
Interlocking design prevents displacement under water pressure
Rapid Deployment for Emergency Use
Dry-stack installation with no curing time
Cast-in lifting pins for safe and fast handling
Ideal for emergency flood response and temporary barriers
Durable in Wet Environments
No steel reinforcement to corrode
Resistant to water ingress, freeze-thaw and abrasion
Suitable for repeated wetting and drying cycles
Modular and Reusable
Easily dismantled after flood events
Can be redeployed at other locations
Ideal for temporary or seasonal flood risk areas
Engineered for Your Environment
Design, Stability & Engineering Considerations
Flood defence structures must be designed to account for:
Maximum flood water levels
Hydrostatic and hydrodynamic pressures
Scour and ground stability
Debris impact loading
Wall height and layout
Ground bearing capacity
Elite Precast provides access to its Stability & Loadings Directory, offering guidance on block selection, wall heights and base requirements.
⚠️ Important: All flood defence and temporary flood barrier installations must be checked and approved by a qualified structural or civil engineer prior to construction.
Installation and Safety Guidance
Construct on a suitable, level and stable base
Assess scour risk and provide protection where necessary
Inspect blocks and lifting pins before installation
Avoid impact damage during construction
Consider strapping top layers in high-flow or exposed areas
Compliance and Performance
Designed in accordance with BS EN 1992-1-2004 (Eurocode 2)
Class A1 Fire Resistant
Suitable for public sector, infrastructure and emergency response projects
Why Choose Legato® Interlocking Concrete Blocks for This Application?
Why Choose Elite Precast?
Leading UK manufacturer of interlocking concrete block systems
Proven performance in flood defence applications
Large stock availability for rapid deployment
Nationwide delivery with crane offload options
Experienced technical and flood-risk-aware support team
Elite Precast – Strong, Rapid and Reliable Flood Protection Solutions.
