Solution
Gabion retaining walls – a durable and more cost-effective alternative to precast “L” walls
Planning a slope, level difference or driveway? Gabion retaining walls (gabion baskets filled with stone) are flexible, permeable and resistant to outdoor conditions. In Gablux technology, we use thick Ø 4.8 mm wire that passes through the C-profile, combined with a welded structure instead of standard machine-welded mesh — which translates into significantly higher rigidity and long-term durability.
- No basket “bulging” thanks to C-profiles and bolted connectors
- Geotextile + filter layer selected to suit the soil conditions
- A wall can often be thinner than standard welded-mesh solutions (with stabilising posts)
- Up to approx. 1.5 m high — a very cost-effective alternative to reinforced concrete “L” walls
Why it works
Gabion retaining walls – slope stabilisation without the “heavy concrete look”
Gabions are permeable, which means water can pass through the stone fill, helping to reduce hydrostatic pressure building up behind the wall. They are also flexible — which means they generally cope better with minor ground settlement than rigid concrete structures, often reducing the risk of cracking and costly repairs.
Natural drainage
A gabion acts like a drainage layer. In practice, we still recommend filtration with geotextile, so that soil does not clog the voids within the stone fill.
Strength and durability
EN ISO 1461 galvanizing (~70 µm) combined with a solid steel structure gives long-term durability in outdoor conditions.
Cost vs precast “L” wall
Up to around 1.5 m in height, gabions can offer similar practical performance while often being a more cost-effective alternative to reinforced concrete retaining walls of the “L” type.
Technology
Why is our gabion retaining wall clearly stronger?
Ø 4.8 mm + C-profile = a rigid structural frame
In Gablux baskets, we use Ø 4.8 mm vertical rods and 20×8×1.8 mm horizontal C-profiles. Most importantly, the vertical rods pass through the C-profile, which helps the basket maintain its geometry under soil pressure and the weight of the stone fill.
Welding instead of light machine-welded mesh
Standard welded-mesh systems are often based on thin wire of just Ø 3.0 mm or sometimes Ø 3.2 mm. In our solution, the key structural elements are welded, which improves joint stability and resistance to deformation. In practice, this gives a clear structural advantage — we estimate it can be up to around 70% stronger than light welded-mesh baskets.
In retaining walls, the most common issue with weak gabions is front-face deformation and loss of alignment. A stiffer frame based on C-profiles and thicker rods helps limit this, especially at greater heights and on demanding ground.
Parameters
Gabion basket specification for retaining walls
In retaining walls, the most important factors are sub-base, filtration (geotextile), and the quality of the fill material — ideally angular stone that locks together well. The right section sizes and layout should always be selected based on the wall height and applied loads, such as a driveway, vehicle traffic or a terrace.
Design and installation
What is critical in a gabion retaining wall?
A retaining wall works under soil and water pressure. Gabions help because they are permeable, but proper execution still requires several key elements that directly determine long-term performance.
1) Base preparation and levelling
A stable crushed-stone base layer helps maintain level and reduces settlement. In practice, this often means preparing an excavation or foundation bench below the first layer and levelling it carefully.
2) Filtration: geotextile
Geotextile is placed between the gabion and the soil so that fine particles do not migrate into the stone fill and reduce drainage performance. This has a major impact on the service life of the wall.
3) Fill material and interlock
The best choice is angular stone that locks together well. Selecting the right fraction size for the mesh and basket thickness affects both stability and the appearance of the front face.
Wall batter and stepped layout
For taller walls, a slight batter toward the slope and/or a stepped layout is often used to improve stability. This is common in lighter welded-mesh baskets. With our technology (stiffer baskets + optional stabilising posts), it is often possible to design a thinner and more vertical wall while maintaining stability — the final choice depends on the project.
Additional surcharge loads
A terrace, driveway, cars or fencing placed above the wall all increase the structural demands. In such cases, the wall thickness, layer arrangement and possible reinforcements are selected accordingly, for example stabilising posts or reinforced ground layers.
Important: for higher and/or loaded walls, such as in driveway zones, we recommend a design consultation. We can help you choose the right basket layout, wall thickness, stabilising posts and sub-base layer configuration.
Reinforcement
Concrete-embedded stabilising posts – an even more rigid retaining wall
An additional advantage of our system is the option of using deep, concrete-embedded stabilising posts. This works like an anchor for the whole structure and increases resistance to tilting and deformation. As a result, in many cases it is possible to design a thinner wall than with light welded-mesh systems, which often require stepped basket arrangements to achieve stability.
Greater stability
The posts transfer part of the forces deeper into the foundation zone, reducing movement in the wall as a whole.
Thinner structure
In many projects, this makes it possible to reduce the visual bulk of the gabion while still meeting stability requirements.
Cleaner visual result
Less step-backing means a more modern and cleaner wall form, wherever the project conditions allow it.
Comparison
Retaining wall: Gablux (welded + Ø 4.8 mm) vs welded-mesh baskets (Ø 3.0–3.2 mm)
| Feature | Gablux (premium) | Typical welded-mesh baskets |
|---|---|---|
| Vertical material | Ø 4.8 mm (high rigidity) | Ø 3.0 mm, sometimes Ø 3.2 mm |
| Construction | Welded + C-profiles | Machine-welded mesh |
| Geometry retention | Very good (vertical rod passes through the C-profile) | More likely to move under soil pressure |
| Risk of front-face deformation | Lower (C-profiles + connectors) | Higher, especially at greater heights |
| Wall thickness | Often possible to use a smaller thickness (with optional posts) | Often requires a stepped arrangement of baskets |
| Practical strength | up to approx. +70% compared with light welded-mesh systems | Lower with thin wire |
In a retaining wall, what matters most is how stable the whole system remains under soil and water loads. Thicker rods, C-profiles and welded construction mean genuinely higher resistance to deformation, which usually means fewer problems over time.
Applications
Where are gabion retaining walls used most often?
Slopes and level differences
Ground stabilisation around gardens, terraces, driveways or perimeter zones around buildings.
Driveways and parking areas
The wall works under load, which is why the correct basket selection and reinforcement, such as posts, is especially important.
Commercial and industrial projects
Fast installation, durability and aesthetics make gabions a good fit for commercial and industrial sites.
Projects
Gabion retaining walls – completed project examples
Examples of how our gabion baskets are used for ground stabilisation.
Need a quote for a gabion retaining wall?
Send us: the wall height, run length, whether there is a slope, and whether there will be a driveway / terrace / fence above the wall. We will select the right basket layout and thickness, the fill material, and optionally concrete-embedded stabilising posts.
The quotation is free and non-binding. If the wall is taller or carries additional loads, we will also advise on layer arrangement and reinforcement.
FAQ