
Compost, Grain and Woodchip Segregation Walls
Elite Precast Concrete's Duo™ interlocking concrete blocks provide a durable, flexible, and cost-effective solution for constructing segregation walls for compost, grain and woodchip storage.
Designed for rapid installation and long-term reuse, Duo™ blocks are ideally suited to agricultural, biomass, composting and waste management environments.
As the sole UK manufacturer of Duo™ interlocking blocks, Elite Precast Concrete offers a reliable, British-manufactured system that delivers strength, adaptability and compliance across a wide range of bulk material containment applications.
What Are Duo™ Interlocking Concrete Blocks?
Designed for Organic and Bulk Material Segregation
Compost, grain, and woodchip storage areas require walls that can safely contain loose materials, resist lateral pressure and withstand constant loading and vehicle movement.
Duo™ interlocking blocks are engineered to meet these demands while allowing materials to naturally form against the wall face, reducing point loading and improving overall stability.
The dry-laid, interlocking design enables walls to be constructed without mortar or permanent foundations, making Duo™ blocks ideal for temporary, semi-permanent or relocatable segregation structures.

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
Duo™ interlocking concrete blocks are commonly used for segregation walls in:
Composting facilities and green waste sites
Agricultural grain and feed storage
Woodchip and biomass storage yards
Anaerobic digestion plants
Recycling and waste transfer stations
Farm and rural storage compounds
Benefits
Key Benefits of Duo™ Segregation Walls
High Mass & Interlocking Stability – Each block's weight and interlocking profile provide excellent resistance to lateral loads from bulk organic materials.
Fast, Dry Installation – No mortar, fixings, or curing time required, allowing walls to be installed quickly using standard lifting equipment.
Flexible and Reconfigurable – Walls can be extended, dismantled or relocated to suit seasonal demand or operational changes.
Durable in Harsh Environments – Precast concrete construction offers resistance to moisture, impact, freeze–thaw conditions and repeated mechanical handling.
Fire-Resistant Performance – Non-combustible concrete makes Duo™ blocks suitable for biomass and composting facilities where fire risk must be considered.
Temporary Structures with Operational Advantages
Segregation walls constructed using Duo™ blocks are typically classed as temporary or semi-permanent structures. As the system is dry-laid and fully reusable:
Planning permission may not be required (subject to local authority approval)
Walls can be repositioned or removed as site layouts change
Installation costs are significantly lower than in-situ concrete walls
Long-term value is increased through reuse across multiple projects
Engineered for Your Environment
Design Flexibility and Wall Configuration
Duo™ interlocking blocks can be arranged to form straight, stepped, or cornered segregation walls, with heights tailored to site requirements. Wall design is influenced by:
Stored material type and density
Block size and stacking configuration
Ground bearing capacity
Vehicle loading and site traffic
Wind loading for exposed or freestanding walls
Elite Precast Concrete can provide stability and loading guidance to support safe and compliant wall design.
Quality, Finish and Compliance
Manufactured from high-quality precast concrete, Duo™ blocks offer:
Excellent resistance to impact, weathering, and chemical exposure
Non-combustible performance for high-risk environments
Moulded or trowelled faces depending on aesthetic requirements
Concrete finish classified as basic in accordance with the National Structural Concrete Specification
Duo™ interlocking concrete blocks are manufactured in accordance with BS EN 1992-1-1:2004 – Design of Concrete Structures.
Safety and Installation Considerations
Walls must be constructed on a firm, level surface with adequate bearing capacity
Retained material loads and wind exposure should be assessed prior to installation
Blocks should be inspected before lifting and reuse
Direct impact from loading machinery should be avoided
It is the customer's responsibility to ensure appropriate structural and ground condition checks are completed before installation.

Why Choose Duo™ Interlocking Concrete Blocks for This Application?
Elite Precast Concrete provides expert advice on the design and installation of compost, grain, and woodchip segregation walls using Duo™ interlocking blocks, including:
Design and layout guidance
Stability and loading calculations
Technical support throughout the project lifecycle
Elite Precast Concrete – UK-manufactured precast solutions for safe, flexible and efficient bulk material segregation.