Woven geotextile is stronger, cheaper per kilonewton, and the wrong product for most of the jobs it gets ordered for.
That sounds backwards until you apply the rule we give every buyer who asks us which fabric to put in the container: if the fabric’s job is to move water — filtration, drainage, separation over wet ground — you want nonwoven. If its job is to carry load — reinforcement, stabilisation, bearing — you want woven. Water passes, choose the felt. Force pulls, choose the weave.
That one sentence honestly settles nine woven vs nonwoven geotextile decisions out of ten. This guide is about the tenth: which nonwoven, which woven, which polymer underneath both — and the three wrong turns that keep producing torn roads and clogged drains for buyers who stopped reading at “geotextile.”
Why the woven vs nonwoven geotextile split works
The two fabrics are different machines, not different grades of the same thing.
A nonwoven is a felt: millions of polyester or polypropylene fibres tangled and punched (or heat-bonded) into a thick, soft sheet. Water travels through its whole body — down through the plane and along it — which is exactly what a filter or drainage layer needs. Pull on it and it stretches a long way before failing, so it hugs uneven subgrade instead of bridging over it.
A woven is closer to sacking: flat polymer yarns interlaced at right angles. It delivers high tensile strength at very little stretch — perfect for holding aggregate together over soft ground — but water can only pass through the small gaps between yarns, and fine soil particles blind those gaps shut over time.
So the map draws itself. Drain wraps, filter layers behind gabions and rip-rap, cushions under geomembrane: nonwoven. Haul roads, working platforms, basal reinforcement under embankments: woven. Everything else in this article is refinement.
Which nonwoven: needle-punched staple, spunbond filament, and what calendering changes
Inside the nonwoven branch, the first fork is fibre length, and it moves both price and strength.
Needle-punched staple (short fibre) is the volume workhorse. On the 2024–2025 ex-works price lists we work from, standard-grade white PET staple fabric runs around RMB 8,000 per ton. It does the everyday jobs — cushion, separation, filter — at the lowest cost per square metre in the family.
Spunbond filament (continuous fibre) buys strength per gram. PET filament fabric prices near RMB 8,600 per ton, and the conversion table is blunt: a 300 g/m² filament fabric reaches 15 kN/m, 400 g/m² reaches 20 kN/m. One counterintuitive detail from the mill side: light filament fabric costs more per ton, not less — under 150 g/m² the price climbs to about RMB 9,200, under 100 g/m² to 10,200 — because wide, light fabric runs slower on the line. If a quote shows featherweight filament at heavyweight-ton prices, someone is rounding in their own favour.
Calendering is the third lever. Hot rollers fuse the fabric surface, making it thinner, denser and markedly stronger for its weight: a calendered 220 g/m² PP staple fabric can reach 15 kN/m — the same strength class a 300 g/m² PET filament hits at over a third more weight. The cost is modest, roughly RMB 500–700 per ton. The trade is permeability: a fused face passes less water, so calendered fabric belongs in cushion and separation work, never in a filter layer.
One warning applies across all three: two rolls both stamped “200 g/m²” can be made from fibre grades sitting 27% apart in ton price. We wrote a whole piece on why buying geotextiles by weight alone is a dangerous game — weight is a recipe ingredient, not a performance spec.
Which woven: flat-yarn workhorse or high-strength reinforcement
The woven branch forks on what the strength is for.
Flat-yarn (slit-film) woven is the separation and temporary-road fabric. It trades around RMB 11,000 per ton and sells by weight across a wide band: roughly ¥1.32/m² at 120 g/m² up to ¥5.4/m² at 450 g/m² ex-works. For a haul road over soft clay or a separation layer under ballast, this is the honest, cheap answer — high strength, low stretch, low drama.
High-strength woven is a different purchase discipline. Reinforcement fabric for embankments, dykes and reclamation is specified by tensile rating, not weight — and Chinese mills produce it up to serious numbers: the strongest batch report in our own library reads 200 × 200 kN/m. At those ratings, the brochure is irrelevant. Buy the test report: batch-numbered, machine- and cross-direction values, from the production run you’re actually paying for. A mill that hesitates to test the batch is quoting you a hope, not a fabric. Our geotextile supplier page lays out the full price architecture across both constructions.
PP or PET: match the polymer to the chemistry, not the price list
Underneath fabric construction sits a quieter decision that buyers skip because both polymers make white fabric that looks identical.
PET (polyester) is the value default — the RMB 8,000–8,600 ton prices above are PET. Its weakness is chemistry: polyester degrades in strongly alkaline environments. Fresh concrete contact, lime- or cement-stabilised soils, certain landfill leachates — high-pH settings quietly eat PET fibre over years.
PP (polypropylene) shrugs at high pH, which is why it’s the default for landfill work and anything touching concrete. You pay for that inertness: PP staple fabric runs about RMB 10,800 per ton without UV stabiliser and 11,300 with it; pigmented black or green versions sit near 12,500. PP filament exists for the rare specs that demand it, at roughly 20,000 per ton.
The working rule: buried in neutral soil and covered quickly — PET, take the savings. Landfill cells, concrete-faced channels, stabilised layers, or anything the sun will see for months — PP, and pay for the UV package.
Three ways buyers get the choice wrong
These three mistakes account for most of the corrective orders we see in this category.
1. Woven bought as a filter. A buyer recently sent us a woven quote for wrapping a perforated drainage pipe — the logic being “woven is stronger, stronger is better.” Slit-film openings blind with silt; within a season the “filter” becomes a barrier and the water finds another path, usually through someone’s foundation. We moved the order to uncalendered needle-punched nonwoven. Water jobs take felt, full stop.
2. Thin nonwoven under a haul road. The reverse error: a light nonwoven — quoted cheap, looks generous on paper — laid under aggregate carrying loaded trucks. The fibres pill, the fabric stretches into the ruts, and inside two months it’s torn and pumping mud up through the stone. A flat-yarn woven at the ¥1.32–5.4/m² band would have cost pennies more and lasted the project.
3. No UV package on exposed work. Both polymers degrade in sunlight; fabric left uncovered on slopes or stockpiles chalks and powders within roughly a year. If your schedule leaves fabric exposed for months, spec the UV-stabilised version — on PP staple that’s the step from 10,800 to 11,300 per ton, trivial against replacing a powdered liner cover.
FAQ
Which geotextile do I need for a French drain or drainage layer? Needle-punched nonwoven, uncalendered, sized for your soil’s fines. Skip woven entirely here, and skip calendered grades — the fused face cuts the water flow that is the layer’s whole purpose.
Needle-punched vs woven fabric — which is stronger? Per gram, woven wins, and it delivers that strength at low elongation. But strength is only one axis: needle-punched fabric wins on water flow, puncture conformity and hugging irregular ground. “Stronger” only matters if load-carrying is actually the fabric’s job.
Same 200 g/m² — can I swap one for the other? No. Weight tells you how much polymer is in the sheet, not how the sheet behaves. A 200 g woven and a 200 g nonwoven are different products with different failure modes, and even two 200 g nonwovens can differ 27% in the fibre grade behind them.
Send us the application, not a fabric name
The enquiries that go smoothly in this category never say “we need 200 g geotextile.” They say: here’s what the fabric must do, here’s the soil and water, here’s how long it stays exposed, here’s the quantity. From that we can come back with the full answer — construction, weight, polymer, and a landed price rather than an ex-works teaser, because how each fabric loads into a 40HQ moves the delivered cost more than most price negotiations do.
Send us your application through our geosynthetics sourcing hub and we’ll run it through this exact woven vs nonwoven geotextile decision tree — one sentence first, then the 10% that keeps your drains draining and your roads whole.
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