900 GSM
Our heaviest woven grade. The dense weave covers more than half the ground and has the highest strength in the range, for places where water runs along the surface and the soil must not move.
- Weight900 g/m²
- Open areaabout 39%
- Steepest slope1:1
- Rolls2 / 3 / 4 m wide
Best for
- Channels, ditches and swales
- Riverbanks and shorelines
- Steep, exposed slopes up to 1:1
- Sites where vegetation is slow to establish
Choose another option for
- Seeding after the mesh is laid Choose 700 GSM →
- Gentle landscaping where a lighter grade will do Choose 400 GSM →
900 GSM at a glance
| Property | Value | Basis |
|---|---|---|
| Mass per unit area | 900 g/m² (tolerance +7.5% / −5%) | IS 12503 tolerance, TNAU |
| Open area | about 39% | Caltrans reference |
| Tensile strength, machine direction | at least 15 kN/m | Indian specification minimum |
| Tensile strength, cross direction | at least 8 kN/m | Indian specification minimum |
| Extension at maximum load | more than 20% | Indian specification minimum |
| Opening size | about 4.2 × 5.1 mm | Indian specification |
| Steepest slope (H:V) | 1:1 | Caltrans |
| Functional life on the surface | about 3 years, not counting vegetation | Caltrans |
| Seeding | Seed before laying: too dense to seed through afterwards | Caltrans |
| Your lot | Confirmed on lot test report | Independent laboratory |
Reference values: Caltrans (open area, slope, life) and Indian specification minimums (tensile, opening). Values for your order are confirmed by independent lot test report on request.
How much do you need?
Allows about 15 cm side and 20 cm end overlaps. Add extra for anchor trenches and cutting. Weight is nominal fabric weight before packing.
Roll sizes and weights
| Roll | Area | Fabric weight |
|---|---|---|
| 2 m × 25 m | 50 m² | 45 kg |
| 2 m × 50 m | 100 m² | 90 kg |
| 3 m × 25 m | 75 m² | 67.5 kg |
| 3 m × 50 m | 150 m² | 135 kg |
| 4 m × 25 m | 100 m² | 90 kg |
| 4 m × 50 m | 200 m² | 180 kg |
Nominal fabric weight (900 g/m² × area), before HDPE wrapping. Other sizes made to order.
Laying it right
- 01Prepare and seedGrade smooth and remove rocks and debris, which can lift the mesh. Seed before or after laying, except 900 GSM, which is seeded first.
- 02Anchor trenchesCut trenches about 30 cm deep and 15 cm wide at the top and ends. Pin the roll in the top trench, backfill and compact.
- 03Roll downhillUnroll in the direction water flows, loosely, so the mesh follows the ground. Overlap about 15 cm side to side and 20 cm end to end.
- 04Pin it downU-pins about 15 cm or J-hooks about 22 cm of 3 mm wire, or wooden pegs, about 50–75 cm apart and 30–50 cm along overlaps.
All Woven Coir Geotextile options
About 900 GSM
Do I seed before or after laying 900 GSM?
Before. Caltrans notes 900 GSM netting is too dense to seed through effectively once it is down. Plugs and cuttings can be planted through the mesh.
Is it suitable for fast water?
It is the strongest grade in our range and the usual choice for channels and banks. Very high-energy sites may still need engineered protection, so share your design flows with us.
How much does a roll weigh?
The fabric weighs 0.9 kg per square metre, so a 2 × 50 m roll is about 90 kg before packing.
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