Rock Retaining Wall Mesh for Philippine Sites
Rock walls are the default retaining structure across the Philippines - every subdivision road, hillside lot and barangay project has them. Most are mortared boulder walls, and most fail the same two ways: an earthquake cracks the mortar joints, and a typhoon fills the ground behind the wall with water that has nowhere to go. A wire-mesh rock wall answers both. The double-twist cage holds the stone but the structure stays flexible - ground shakes, the wall moves with it and settles back. And it is fully permeable, so storm water drains straight through instead of building the pressure that pushes solid walls over.
For contractors already building rock walls, the change is smaller than it looks: the same local stone, the same crews, but the wire cage replaces the mortar as the thing holding the wall together. Cages arrive flat-packed from our mill, fold up on site, and get filled with rock from the excavation itself. No mixing, no curing, no waiting for mortar to set before backfilling - the wall and the backfill go up together.
Mesh materials: usually made of galvanized steel wire, Galfan (zinc aluminum alloy) steel wire, PVC/PE coated steel wire, etc., which have the ability to resist corrosion and rust.
Weaving method: mostly hexagonal double twist weaving, with a flexible structure, not easily deformed, and not easily dispersed due to local damage.
Specifications
|
Item |
Data |
|
Wire diameter |
2.0 / 2.2 / 2.7 / 3.0 / 3.5 / 4.0 mm, tensile 350–550 MPa |
|
Mesh size |
60×80 / 80×100 / 100×120 mm, hexagonal double-twist |
|
Wall units |
1×1×1 m, 2×1×1 m, 3×1×1 m, 4×1×1 m; half-height 0.5 m courses for low walls |
|
Coating |
Hot-dip galvanized 220–300 g/m² heavy zinc; Galfan; PVC over galvanized |
|
Stone fill |
Local rock 100–250 mm, from the excavation where possible |
Frequently Asked Questions
Why change from mortared boulder walls?
Mortar is rigid, and the Philippines is not. Earthquakes crack rigid joints; flood water trapped behind solid walls pushes them over. The wire cage gives the same rock wall flexibility and full drainage - and when a section is ever damaged, you lace in a patch cage instead of rebuilding the panel.
Is it more expensive than a mortared wall?
The cage costs money; the mortar, mixing labor and curing time do too. On most sites the totals land close, and the wire wall goes up faster because backfilling starts immediately. Where the gabion wins outright is lifetime: no re-pointing cracked mortar after every shake.
How high can a rock mesh wall be built?
Boundary walls and lot retention are typically 1–3 m in stacked courses. Taller walls in poor ground need proper sizing - send the height, retained soil and site conditions and we will confirm the section detail with your quote.
What wire suits a coastal or river site?
Inland lots run standard heavy zinc. For brackish ground, river water or salt spray, Galfan or PVC-coated wire is the spec - the coating upgrade is small money against digging the wall out in ten years.
Do you ship to Philippine job sites?
Flat-packed containers to Manila and Cebu, lacing wire included, split sailings if the program needs them. Send us the wall lengths and heights - even a hand sketch works - and we will return a cage schedule and delivered quote within 24 hours.
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