The five geogrid types in one place — sorted by load direction (biaxial vs uniaxial) and by geogrid material (PP, HDPE, glass fibre, PET, steel-plastic), with the job each one is actually built for.
A geogrid is an open polymer mesh buried in soil or asphalt whose apertures let fill pass through and lock in place, so the layer carries tension the soil cannot. That much is common to every product on this page. Everything else — polymer, aperture shape, how the junctions are made, how much the grid stretches before it takes load — changes with the type, and those differences decide whether a grid works or is simply an expensive layer of plastic in the ground. Two questions sort the field: which direction does the load pull, and what is the geogrid material.
A biaxial geogrid is drawn in both the machine and cross directions, so it ends up with square apertures and roughly equal strength each way. That is what an area needs — a subgrade, a working platform, a haul road, a container yard — because wheel loads arrive from any bearing. A uniaxial geogrid is drawn one way only; the apertures stretch into long ovals and nearly all the strength concentrates along the roll. That matches a reinforced soil structure, where every layer pulls back from the face against the earth pressure behind it: retaining and MSE walls, steep reinforced slopes, bridge abutment fills. Getting this wrong is the most common specification error we see — a bidirectional grid laid into a wall wastes half its polymer in the direction nothing is pulling.
Working platform, haul road, yard or subgrade under a new road → PP biaxial geogrid, grade set by axle load: 15-15 and 20-20 for light access and car parks, 30-30 for highways and heavy yards, 40-40 and up for ports and railway formation. Retaining wall, MSE wall or steep slope → uniaxial geogrid at the grade the wall designer specifies, or polyester geogrid when the submittal wants long-term design strength against a stated design life. Asphalt overlay on a cracked but structurally sound pavement → fiberglass geogrid, never a plastic grid. High fill on soft ground, bridge approach, road widening or a cold-region corridor where settlement rather than collapse is the risk → steel-plastic geogrid, bought for its stiffness at low strain.
Buyers compare grids on ultimate tensile strength because it is the biggest number on the datasheet. Designers rarely use it. A stabilization layer works at small strain — a road that has moved enough to break a grid has already failed as a road — so the honest comparison is tensile strength at 2% and 5% strain, which we publish for every grade, and for walls the long-term design strength after creep, installation damage and ageing. That is why a 60 kN/m PET grid and a 60 kN/m PP grid are not interchangeable, and why the steel composite earns its price on jobs where the reinforcement has to be working before the embankment settles.
On soft or fine-grained ground the grid is only half of it. A grid reinforces; it does not separate. Without a fabric below, fines pump up into the granular layer and the layer quietly loses the strength the design assumed. Pair the reinforcement with a woven geotextile where the separator must also carry load, or a nonwoven geotextile where filtration and drainage matter more, and add a geonet where water has to be led away in-plane. A note on vocabulary: what North American buyers call a "ground grid" for a gravel driveway is usually a cellular gravel grid panel, not the flat structural geogrid described here.
Tell us the application, the subgrade, the load and — if you have it — the design tensile strength or LTDS the engineer specified, and we will name the type and grade rather than selling you the one we happen to hold. We make the PP, HDPE and PET lines in-house and source the fiberglass and steel-plastic ranges from vetted mills, which we state on every offer. The full geosynthetics range shows the geotextiles and drainage materials that ship in the same container.
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Five cover almost all civil work: PP biaxial for subgrades and platforms, PP or HDPE uniaxial for retaining walls and slopes, fiberglass for asphalt overlays, warp-knitted polyester for high-load reinforced soil with a published design life, and steel-plastic composite for low-strain, freeze-thaw-exposed earthworks. They are sorted first by load direction, then by polymer.
Biaxial is drawn in both directions, has square apertures and carries roughly equal load each way — right for stabilizing an area such as a subgrade or working platform. Uniaxial is drawn in one direction only, has long oval apertures and concentrates its strength along the roll — right where reinforcement pulls back from a wall face or slope.
Polypropylene for general base and subgrade stabilization, HDPE or polyester where a long design life must be demonstrated with creep data, glass fibre inside asphalt layers, and steel-plastic composite where settlement tolerances are tight or the site sees hard freeze-thaw cycling. The application decides the polymer before price does.
They are the same product described two ways. "Geogrid mesh" points at the open apertures that let aggregate interlock; "geogrid fabric" is how buyers who work mostly with geotextiles tend to say it. Neither is a woven cloth — a true fabric separates and filters, a grid reinforces.
Fill pushed into the apertures is confined and can no longer spread sideways under load. The granular layer then behaves as a stiffer slab and spreads pressure over a wider area of soft soil beneath, so rutting drops and, in most designs, a thinner base achieves the same service life.
No, and substituting across types is where projects go wrong. A plastic grid melts and stretches too much for an asphalt interlayer; a fiberglass grid is brittle and useless as soil reinforcement; a biaxial grid puts half its strength in a direction a wall never loads. Send us the application and we will confirm the type before quoting.
Geogrid Punched and drawn PP biaxial geogrid for subgrade stabilization and base reinforcement — 15-15 to 50-50 kN/m grades, square apertures, 93% junction efficiency.
Geogrid PP and HDPE uniaxial geogrid for retaining walls, MSE walls and reinforced slopes — 60–300 kN/m machine-direction strength, long oval apertures, low creep.
Geogrid Bitumen-coated fiberglass geogrid for asphalt overlays — warp-knitted alkali-free glass fibre, 25–120 kN/m, elongation ≤ 4%, standard and self-adhesive.
Geogrid Warp-knitted PET geogrid with published long-term design strength — 34 to 452 kN/m LTDS at a 120-year design life, PVC, SBR or bitumen coated.
Geogrid Steel-cored composite geogrid welded at every crossing — 30-30 to 120-120 kN/m biaxial and 50-20 to 100-30 uniaxial, ≤ 3% elongation at break, full strength retained after 100 freeze-thaw cycles.
Tell us your application and quantity — our English-speaking team replies within one business day.
