Erosion Control & Geocells
Coir SoilLock Coconut Fibre Erosion Control Blanket – 350gsm & 450gsm
Coir SoilLock is a 100% coconut fibre erosion control blanket supplied in two grades: 350gsm for civil slopes, embankments and stream banks, and 450gsm mining grade for tailings dams and steep, high-runoff slopes. ASTM-tested, long-term (Type 4) protection, delivered across Africa.
Overview
Coir SoilLock is a long-term coconut fibre (coir) erosion control blanket made from 100% untreated coconut husk fibre held between photodegradable polypropylene netting on both faces. It protects bare soil from raindrop impact and surface runoff, and it holds seed and topsoil in place until vegetation establishes. It is used on road embankments, mine rehabilitation areas, tailings storage facilities (TSFs), riverbanks, stormwater channels and landfill caps across South Africa and Africa.
One blanket, two grades - specify for the slope, not for the catalogue Most sites don't carry the same erosion risk from crest to toe, or from one project to the next. That's why Coir SoilLock is supplied in two grades under one specification. Engineers and contractors can match fibre mass to the actual rainfall, slope and runoff conditions, and don't have to force one blanket onto every site.
Coir SoilLock is held in stock and delivered to projects in Gauteng, Mpumalanga, Limpopo, North West, KwaZulu-Natal, the Northern Cape and the Western Cape. It is also exported to Botswana, Namibia, Zimbabwe, Zambia, Mozambique, Tanzania, the DRC, Ghana, Côte d'Ivoire and Senegal. Our IAGI-aligned installation crews can supply and install under one contract. Upload your BOQ or drawings for a grade recommendation and quote.
- Material100% coconut coir fibre · photodegradable PP netting
- StructureDouble-net stitched coir blanket · 350gsm (5–6 mm) & 450gsm (6–7 mm) grades
- ColourNatural brown / tan
- StandardASTM-tested (D5261, D5199, D4595, D6818) · ECTC Type 4B long-term ECB
- Roll Width2.4 m (both grades)
- Roll Length50 m · 120 m² per roll
Typical Properties
| Property | Test Method | Coir SoilLock 350 | Coir SoilLock 450 |
|---|---|---|---|
| Grade | - | Standard civil grade | Mining grade |
| Mass | ASTM D5261 | 350-360 g/m2 | 450-460 g/m2 |
| Thickness | ASTM D5199 | 5-6mm | 6-7mm |
| Width | - | 2.4m | 2.4m |
| Roll Length | - | 50m | 50m |
| Tensile Strength MD | ASTM D4595 | 3.14 kN/m | 3.25 kN/m |
| Tensile Strength CMD | ASTM D4595 | 1.38 kN/m | 2.01 kN/m |
| Elongation at Break MD | ASTM D6818 | 31% | 28% |
| Elongation at Break CMD | ASTM D6818 | 23% | 22% |
| Material | - | 100% coir · photo PP net | 100% coir · photo PP net |
| Service Life | - | 2 to 3 years | 2 to 3 years |
| Residue | - | Zero | Zero |
Note: The above specifications represent the product family properties. Please refer to the product datasheet for individual SKU values.
Typical Applications
View all applicationsRoad & Highway Embankments
Coir SoilLock 350 is specified on cut and fill slopes on road and highway construction where slope gradient, rainfall intensity or slow vegetation establishment requires longer protection than jute can provide. The 2 to 3 year service life covers the full establishment period on most African road projects.
Mine Rehabilitation & Tailings Dam Embankments
Coir SoilLock 450 is the mining grade specification for tailings dam embankments, waste dump faces and mine rehabilitation slopes where high-intensity rainfall, steep gradients and slow-establishing vegetation demand maximum erosion resistance. The only 450gsm coir blanket locally stocked in South Africa.
Dam, Canal & River Bank Protection
Both Coir SoilLock grades protect freshly graded dam embankments, canal banks and river bank reinstatements. The 450gsm grade is specified on river banks subject to periodic inundation and higher flow velocities where standard grade coir is insufficient.
Landfill Capping & Environmental Rehabilitation
Coir SoilLock biodegrades completely leaving zero synthetic residue in the capping system - a requirement on landfill caps and contaminated land rehabilitation where permanent synthetic materials cannot be introduced into the closure system.
Drainage Channels & Culvert Outlets
Coir SoilLock 450 lines drainage ditches, culvert outlets and channel banks where moderate to high flow velocities require stronger erosion protection than jute or standard grade coir can provide during vegetation establishment.
Compatible Systems
View all systemsCoir SoilLock 350 - Standard Civil Grade
350-360 g/m2 coconut fibre erosion blanket with photodegradable PP netting on both faces. MD tensile strength 3.14 kN/m to ASTM D4595 - higher than competing 330-350gsm products in the African market. For slope stabilisation, embankment protection, stream bank reinstatement and revegetation on civil, infrastructure and environmental projects. Supplied in rolls up to 2.4m x 50m giving 120m2 per roll. Service life 2 to 3 years.
Coir SoilLock 450 - Mining Grade
450-460 g/m2 heavy grade coconut fibre erosion blanket - the only 450gsm coir blanket locally stocked in Africa. MD tensile strength 3.25 kN/m · CMD 2.01 kN/m to ASTM D4595. Thickness 6-7mm. Designed for the high rainfall intensity, steep gradients and aggressive flow velocities found on African mining operations - tailings dam embankments, waste dump faces, haul road cut slopes and mining infrastructure where standard grade coir is insufficient. Supplied in rolls up to 2.0m x 50m. Service life 2 to 3 years.
Installation Guidance
Standard Method Statement
Coir SoilLock 350 Installation - Seed slope before or after installation - hydroseeding before laying is recommended on large areas. Excavate 150mm anchor trenches at crest and toe. Unroll from top downward, laying loosely to follow ground contours. Overlap adjacent lengths by 150mm minimum. Peg at 500mm to 1m intervals with 500mm pegs. Backfill and compact both anchor trenches. Plants can be inserted through mesh after installation.
Coir SoilLock 450 Installation - Same method as 350 with these differences: the 450 is heavier and mechanical assistance is recommended on steep slopes for unrolling. Reduce peg spacing to 500mm on steep mining embankments. Ensure anchor trench at crest is a minimum 150mm deep and firmly compacted - the heavier blanket creates greater pull on the anchor under storm flow. On tailings dam embankments install from the crest downward in one continuous length where possible to minimise transverse joints on the slope face.
Quality Assurance & Testing
Field QA/QC Checklist
- Delivery & Storage: Materials checked against the delivery note and conformance certificates, stored off the ground, covered from UV and kept clear of sharp objects and fuel.
- Material Conformance: Product category checked against the design (e.g. ECTC classification); tensile strength (ASTM D6818) and performance data (ASTM D6459 slopes / ASTM D6460 channels).
- Seedbed Preparation: Slope graded smooth, topsoiled and seeded before installing the blanket; clods and stones removed.
- Anchor Trench & Stapling: Top anchor trench, overlaps (upslope over downslope) and staple pattern to the manufacturer's guide.
- Contact & Inspection: Blanket in full contact with the soil; inspected after rainfall and repaired where undermined.
Manufacturing Standards
- ASTM D6818 tensile properties
- ASTM D6459 slope erosion performance
- ASTM D6460 channel erosion performance
- Erosion Control Technology Council (ECTC) specifications
- ASTM-tested (D5261, D5199, D4595, D6818) · ECTC Type 4B long-term ECB
Documents
Product Selection Guide
Compare performance properties across the entire category hierarchy before specifying.
Installation & Method Statement
Standard deployment procedures, installation specifications, and field application method statements.
QA/QC Site Checklist
Field quality control procedures, inspection checklists, and testing standards to verify installation integrity.
Technical Data Sheet (TDS)
Guaranteed minimum average roll values (MARV) and material testing properties.
Chemical Resistance / Accessories Guide
Chemical compatibility matrix and list of auxiliary materials needed for installation.
Projects Using Coir SoilLock Coconut Fibre Erosion Control Blanket – 350gsm & 450gsm
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