400 GSM
The most open of our woven grades. About two-thirds of the ground stays open, so seed germinates fast and grass comes through quickly, while the mesh holds soil and seed in place against rain and run-off.
- Weight400 g/m²
- Open areaabout 65%
- Steepest slope3:1
- Rolls2 / 3 / 4 m wide
Best for
- Gentle slopes, 3:1 or flatter
- Landscaping, verges and seedbed cover
- Holding turf and seed in place
- Sites with little water flowing over them
Choose another option for
- Slopes steeper than 3:1 Choose 700 GSM →
- Channels, ditches and riverbanks Choose 900 GSM →
400 GSM at a glance
| Property | Value | Basis |
|---|---|---|
| Mass per unit area | 400 g/m² (tolerance +7.5% / −5%) | IS 12503 tolerance, TNAU |
| Open area | about 65% | Caltrans reference |
| Tensile strength, machine direction | at least 7 kN/m | Indian specification minimum |
| Tensile strength, cross direction | at least 4 kN/m | Indian specification minimum |
| Extension at maximum load | more than 20% | Indian specification minimum |
| Opening size | about 15.6 × 20.5 mm | Indian specification |
| Steepest slope (H:V) | 3:1 | Caltrans |
| Functional life on the surface | about 3 years, not counting vegetation | Caltrans |
| Seeding | Before or after laying | 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 | 20 kg |
| 2 m × 50 m | 100 m² | 40 kg |
| 3 m × 25 m | 75 m² | 30 kg |
| 3 m × 50 m | 150 m² | 60 kg |
| 4 m × 25 m | 100 m² | 40 kg |
| 4 m × 50 m | 200 m² | 80 kg |
Nominal fabric weight (400 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 400 GSM
Is 400 GSM strong enough for my slope?
If the slope is 3:1 or gentler and water does not flow along it, usually yes. For anything steeper, or for ditches and banks, choose 700 or 900 GSM.
Can I seed after laying it?
Yes. With an open area of about 65%, seed can be sown before or after the mesh goes down.
How much does a roll weigh?
The fabric weighs 0.4 kg per square metre, so a 2 × 50 m roll is about 40 kg before packing. See the roll table on this page.
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