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How is Coir Matting Made?

Coir Matting

Erosion-control coir matting is made from coconut-husk fibres. Producers separate and clean the fibres, dry them, spin or twist them into yarn, then weave that yarn into open rolls that can lie against the soil while plants establish.

What is coir?

Coir is the fibrous material in the outer husk of a coconut, between the smooth skin and hard shell. Once cleaned and separated from the pith, it can be made into products within All Stake Supply's full erosion-control and landscaping range.

Brown coir and white coir

Brown and white coir come from coconuts at different stages of maturity and are processed differently. The Coir Board's quality specifications describe brown fibre as mechanically extracted from soaked, dry husks of mature coconuts. White fibre comes from green husks after retting.

Brown fibre is coarser and less flexible; white fibre is finer and more pliable. For erosion matting, fibre length, yarn and weave matter more than colour alone.

Modern uses include brushes, growing media and geotextiles such as coir logs used for erosion control.

Coir

The manufacturing process of coir matting

Production starts with the husk, a by-product left after the coconut is harvested for food or other uses. The husk is split from the hard shell by hand or machine, then prepared for fibre extraction.

Retting and fibre extraction

Retting uses water and microbial activity to soften the plant tissue around the fibre. Traditional white-fibre production may rett green husks for months. Brown fibre from mature husks is commonly made by a shorter soaking and mechanical extraction process.

During mechanical extraction, crushing opens the husk and rotating drums separate the coarse fibres from shorter material and coir pith. The fibres are then washed, dried, combed and graded. The Coir Board's processing guide documents both traditional retting and mechanical decortication, so a blanket claim that all coir spends the same number of months in water is misleading.

Longer, cleaner fibres can be spun or twisted into yarn. Shorter fibre and pith have other uses, and grades may be blended for a particular mat or log.

Coir matting

Weaving and finishing

The cleaned fibre is made into yarn, then woven into an open mesh. The gaps let shoots grow through and help the roll follow the soil surface.

After weaving, the material is checked, trimmed and rolled. Some products are dyed, backed or combined with another netting, so a fully biodegradable project needs the complete specification.

Finished mass is stated in grams per square metre (gsm). A dense 900gsm coir matting roll for demanding sites contains more fibre, but grade selection still depends on slope, flow and soil.

Is coconut matting the same as coir matting?

Yes. In erosion-control products, coconut matting and coir matting usually describe the same type of material: a woven mat made from coconut-husk fibre. "Coir" is the technical name for that fibre, while "coconut matting" is the plain-English search term.

The name does not guarantee that every component is coconut fibre. Check for synthetic mesh, stitching, backing or treatments where a fully biodegradable system is specified.

Different coir products and their applications

Coir matting rolls

Matting rolls cover broad areas and are sold by roll size and gsm. GSM measures mass per square metre, not a guaranteed service life. Moisture, sunlight, soil contact, water flow and installation all affect how a natural-fibre roll performs and breaks down.

Coir matting grade What changes Selection question
400gsm Lighter roll with less fibre per square metre Will vegetation establish quickly on a lower-demand site?
900gsm Denser roll with more fibre per square metre Does the design call for greater coverage or strength on a demanding slope?

The lighter 400gsm coir matting roll for revegetation work can suit sites where a lower-mass blanket meets the design. Compare its grade, dimensions and anchoring requirements.

Coir logs

Coir logs are compressed fibres held in coir netting. Unlike flat rolls, they form a raised barrier that can slow runoff and trap sediment when the project design calls for one.

  • Channel and stream bank stabilisation
  • Wetland restoration projects
  • Sediment control barriers
  • Living retaining walls when stacked
  • Temporary check dams in drainage lines

A 300mm diameter coir log for waterway projects may suit higher-flow work, subject to the design. Smaller logs can be considered for minor drainage lines.

Why choose coir matting over alternatives?

Coir matting protects exposed soil while vegetation establishes. The fibre is intended to weather and break down, although synthetic netting or stitching must be considered separately.

Mature brown coir contains more lignin and less cellulose than fibres such as flax and cotton. The Coir Board's fibre guide links that composition with greater strength and lower flexibility, two characteristics that help explain why coir can be formed into erosion-control rolls.

Comparison with other natural fibres

Coir and jute blankets can both protect disturbed soil while plants establish, but they should not be treated as interchangeable specifications. If the design also calls for a filtration or separation layer, understanding how geofabric differs from coir matting helps keep those functions separate.

  • Coir matting: Coarser coconut fibre suited to open erosion-control blankets.
  • Jute matting: A lighter natural-fibre option where the specified protection period and site conditions allow it.
  • Synthetic blanket or mesh: Performance and removal obligations depend on the polymer and the project specification.

The 620gsm jute matting roll for lower-demand applications gives project teams another natural-fibre option. Use the site design and supplier data to compare it with coir; blanket lifespan promises are unreliable without the installation conditions.

Environmental and practical benefits

Coir matting is used on disturbed slopes, channels and general landscaping and civil sites across Australia. It is one option within a broader range of erosion control products selected for different site conditions.

The flexible roll can follow prepared ground contours. Its open weave protects the surface without blocking emerging shoots, and the fibre gradually gives way as vegetation establishes.

Coir does not permanently reinforce an unstable slope by itself. Drainage, soil preparation, seed and anchoring still need to match the site design.

Installation considerations and best practices

Coir matting needs close contact with the prepared soil surface. Gaps underneath the roll can let water concentrate and prevent the blanket from doing its job.

Site preparation involves removing loose debris and creating a smooth surface. Any large holes or depressions should be filled to prevent bridging of the matting.

  • Follow the direction of flow or slope shown in the project detail.
  • Overlap adjoining rolls so water cannot lift an exposed edge.
  • Anchor the top edge and use the specified pin pattern for the soil and gradient.
  • Keep the blanket against the ground rather than stretched across hollows.
  • Inspect edges, overlaps and pins after heavy rain until vegetation is established.

General erosion-control blanket guidance from the USDA also stresses smooth soil contact, downslope placement and anchored overlaps. Product and engineering specifications take priority because pin spacing and trench details change with the site.

Where the design calls for an additional barrier, a 200mm by 3m coir log for slope and channel work can be paired with matting. The designer should specify its spacing and anchoring.

Frequently asked questions

What part of the coconut is used to make coir matting?

Coir matting is made from fibre in the coconut's outer husk, not from the hard shell or edible flesh. The fibre is separated from coir pith, cleaned, dried and made into yarn before weaving.

What is the difference between brown coir and white coir?

Brown coir comes from mature coconut husks and is commonly extracted mechanically after soaking. White coir comes from greener husks and is traditionally loosened by a longer retting process.

Are chemicals used to make coir matting?

Not always, but processing varies. Coir fibre can be washed, dyed, bleached, softened or combined with synthetic backing or mesh, so check the complete specification if untreated or fully biodegradable material is required.

How long does coir matting last?

There is no reliable lifespan based on gsm alone. Fibre grade, mat density, moisture, sunlight, soil contact, flow and installation all influence how quickly coir weathers and biodegrades.

What are the disadvantages of coir matting?

Natural coir eventually breaks down, can be bulky when wet and needs firm contact and anchoring. It is also easy to assume every roll is plastic-free when some products use synthetic netting or stitching.

Does heavier coir matting always mean better performance?

No. A higher gsm means more fibre per square metre, but the best grade is the one specified for the slope, water flow, soil and establishment period. Extra mass cannot correct poor preparation or anchoring.

Choosing coir matting

For help matching coir grade, roll size and fixings to a project, call 1300 130 123 or contact the All Stake Supply team for product advice. The wider site erosion-control product range covers projects that need more than matting alone.

Check the fibre grade, weave and any synthetic components against the site specification before ordering.

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