What mesh for gabion wall?

The standard mesh for a gabion wall is double-twisted hexagonal woven mesh (per BS EN 10223‑3) with an aperture of 60×80 mm to 100×120 mm, and a wire diameter of 2.0–3.5 mm (selvedge wire 0.5–1.0 mm thicker). Welded mesh (BS EN 10223‑8) is an alternative for decorative or faster‑to‑erect applications.

Key Mesh Specifications

Parameter	Hexagonal Woven Mesh	Welded Mesh
Aperture	60×80 mm (most common), 80×100 mm, 100×120 mm	50×100 mm, 75×75 mm, 100×100 mm
Wire Diameter	Body: 2.0–3.5 mm; Selvedge: 2.5–4.0 mm	2.5–4.0 mm (higher tensile strength)
Surface Treatment	Hot‑dip galvanized (275 g/m²), zinc‑aluminum alloy (Galfan), PVC/PE coated	Same as woven; often PVC‑coated for aesthetics
Strength & Flexibility	Flexible, absorbs ground movement; double‑twist resists tearing	Rigid, maintains shape; faster installation
Cost & Use Case	Economical; hydraulic, slope stabilization, retaining walls	Higher cost; landscaping, decorative walls

For gabion walls, the choice of mesh hinges on mesh type, opening size, wire diameter, and corrosion protection, tailored to the wall’s purpose, load, and environment. Below is a detailed breakdown to guide your selection.

Mesh Type

Type	Structure	Key Advantages	Best For
Double‑Twisted Hexagonal (Woven)	Two wires twisted at intersections; non‑raveling when cut	High flexibility, adapts to ground movement; better impact/settlement resistance	Retaining walls, riverbanks, slopes, areas with differential settlement
Welded Square/Rectangular	Welded at every grid intersection	Rigid shape retention; faster assembly; neater appearance	Landscaping, decorative walls, low‑movement areas (e.g., urban hardscapes)

Mesh Opening Size

Mesh size is determined by the fill stone diameter (typically 1.5–2× the mesh opening to prevent loss) and wall function. Common sizes:

60×80 mm: Smaller stones (75–150 mm); light‑load walls, landscaping, or erosion control in low‑flow areas.
80×100 mm (most popular): Versatile for general retaining walls, slope stabilization, and moderate hydraulic use; pairs with 100–200 mm stones.
100×120 mm: Larger stones (125–250 mm); heavy‑duty retaining walls, flood protection, or high‑flow riverbanks.
120×150 mm: Extra‑large stones; major infrastructure (e.g., large retaining walls, dam abutments).

Wire Diameter & Edge Reinforcement

Woven hexagonal mesh: 2.2–3.7 mm (body); perimeter/selvedge wires: 3.0–3.8 mm (heavier for edge strength).
Welded mesh: 2.0–4.0 mm (body); stiffer for shape retention; may need diagonal bracing in large cages.
Lacing wire (for connecting panels): 2.2 mm (woven) or matching core wire (welded).

Corrosion Protection

Choose based on the environment to extend service life:

Hot‑dip galvanized: Minimum 260 g/m² zinc coating; ideal for freshwater, neutral soils, and general use.
Galfan (Zn‑Al alloy): 95% Zn + 5% Al; superior corrosion resistance (2–3× galvanized); for coastal, industrial, or acidic/alkaline soils.
PVC/PE coated: Fuse‑bonded coating over galvanized/Galfan; best for saltwater, chemical exposure, or aesthetic color matching (e.g., green, black).

Selection Checklist

Define wall purpose (retaining, erosion control, decorative) and expected loads.
Match mesh type to ground movement (flexible woven for settlement; rigid welded for stability).
Size mesh to fill stone (1.5–2× opening) and flow/load conditions.
Select wire diameter per wall height (heavier for taller walls).
Pick corrosion protection based on the environment (galvanized for general; Galfan/PVC for harsh conditions).

Example Specification

A 2 m tall residential retaining wall with moderate soil movement: Double‑twisted hexagonal mesh (80×100 mm), 2.7 mm body wire, 3.4 mm selvedge wire, hot‑dip galvanized (260 g/m²), filled with 100–200 mm angular stone.

Would you like a custom gabion wall mesh spec sheet tailored to your wall height, fill stone size, and local environment? I can include mesh type, opening, wire gauge, and corrosion coating for your project.