Coconut Coir Mat 90
Coco Coir for Steep Slope Erosion Control
Coconut Coir Mat 90 is a 900 g/m² coconut coir matting option engineered for steep slope erosion control and high-flow channels. This heavy-duty coco coir erosion control mat is designed for slopes greater than 1:1 and flow rates up to 16 fps, providing 4–6 years of semi-permanent, biodegradable protection.
Contractors, civil engineers, DOT agencies, and municipal stormwater teams use this erosion control mat where lighter blankets are not enough and natural materials are preferred. Use Coconut Coir Mat 90 when you need a high-strength, biodegradable erosion control mat for demanding erosion control projects on steep slopes and environmentally sensitive sites.
Coconut Coir Mat 90 Specifications
| Property | Test | Technical Details |
|---|---|---|
| Dry Tensile Strength | ASTM D 4595 | Machine Direction 1,968 lbs/ft (27.7 kN/m) Cross Direction 1,416 lbs/ft (20.6 kN/m) |
| Wet Tensile Strength | ASTM D 4595 | Machine Direction 1,260 lbs/ft (18.3 kN/m) Cross Direction 768 lbs/ft (11.2 kN/m) |
| Elongation at Failure Wet | ASTM D 4595 | Machine Direction 43% Cross Direction 36% |
| Thickness | ASTM D 5199 | 0.35 in (9mm) |
| UV Stabililty | ASTM D 4355 | 80% min @ 500 hrs |
| Open Area | Measured | 39% |
| Reccommended Slope | Observed | > 1:1 |
| Reccommended Flow | 16 fps (4.9 m/s) |
Coconut Coir Mat 90 Roll Sizes
| Roll Size | Total Area |
|---|---|
| 6.56 ft x 165 ft (2 m x 50 m) | 120 square yards/roll (100 square meters/roll) |
| 13.1 ft x 165 ft (4 m x 50 m) | 240 square yards/roll (200 square meters/roll) |
| 13.1 ft x 83 ft (4 m x 25 m) | 120 square yards/roll (100 square meters/roll) |
See also this affordable USA made alternative to coir: Excelsior Erosion Control Excelsior Logs.
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Coconut Coir Mat 90 Details
When you have demanding conditions that need heavy duty erosion control, coir mat 90 is an erosion control mat that will stand up to high flows and steep slopes. Coir mat 90 gets its name from its construction and how much it weighs. Coir mat 90 weighs 900 grams per square meter and can handle flows of 16 feet per second and can handle slopes greater than 1:1. Coco coir mats of the grade and strength of coir mat 90 have a shear stress level of 5 lbs./sq. ft. erosion matting prices are based on the roll of the coconut coir mat and the installation accessories.
Coir Mat 90 Features
- Coconut Coir Twines
- Open Weave Design
- Weight: 900 g/sq. meter
Coir Mat 90 Benefits
- Biodegradable Erosion Control
- Support Vegetative Growth
- Semi-Permanent, Long Term Control
Coir Mat 90 Applications
Coconut Coir Mat 90 is a heavy-duty erosion control mat used by civil engineers, municipal and county agencies, environmental consultants, and site contractors who need reliable protection on steep slopes and high-flow channels. This dense coconut coir matting is designed for long-term erosion control where traditional blankets or lighter coco coir mats are not enough.
Typical customers include DOT agencies, stormwater managers, land developers, and restoration crews working in environmentally sensitive areas. Whether you are stabilizing a construction site or restoring a natural habitat, this coconut coir mat provides semi-permanent erosion control while supporting vegetation establishment and long-term soil stabilization.
Common applications for Coconut Coir Mat 90 include:
- Wetland restoration and habitat rehabilitation projects.
- Stream bank stabilization and channel lining in higher-velocity flows.
- Steep slope erosion control on embankments and cut/fill slopes greater than 1:1.
- Vegetation establishment on disturbed construction sites and reclaimed areas.
- Soil stabilization in sensitive parks, green infrastructure, and natural areas where biodegradable coco coir matting is preferred over synthetics.
Coir Mat 90 Installation Guidelines
These general installation guidelines are intended for contractors, maintenance crews, and project owners who are placing Coconut Coir Mat 90 on steep slopes, drainage channels, and other erosion-prone areas. This is a basic overview only. Always follow your stamped site plans, project specifications, and local erosion control and stormwater compliance requirements in addition to these best practices.
- Step 1: Prepare the site by clearing debris, rocks, and loose material, and grading the slope or bank to a stable profile suitable for the erosion control mat.
- Step 2: Dig an anchor trench at the top of the slope or along the crest of the bank to securely lock the coconut coir mat into the soil and help prevent undercutting.
- Step 3: Unroll the coir mat downslope or in the direction of water flow, keeping the Coconut Coir Mat 90 in full contact with the soil surface to avoid voids and washouts.
- Step 4: Overlap adjacent coco coir mats by at least 6 inches along edges and ends so water cannot get between the panels and erode the soil underneath.
- Step 5: Secure the erosion control mat using U-shaped staples or wooden stakes at regular intervals and at overlaps, following your engineer’s staple pattern for steep slopes or high-flow areas.
- Step 6: Backfill the anchor trench and compact the soil over the leading edge of the Coconut Coir Mat 90 to create a tight seal and provide long-term stability.
For site-specific details such as staple patterns, overlap lengths, and acceptable slope conditions, always refer to your engineer-of-record, project drawings, and local erosion and sediment control regulations.
Coco Coir Mat Frequently Asked Questions
Yes. The open weave design of Coconut Coir Mat 90 allows for seeding either before the mat is installed or afterward by hydroseeding or hand seeding through the mat. The coconut coir fibers help hold seed and soil in place while vegetation establishes, improving erosion control performance over time. Always follow your project specifications and seeding plan for seed mix, application rates, and timing.
Coconut Coir Mat 90 typically lasts 4–6 years in the field. Actual service life will depend on site conditions, UV exposure, moisture, and flow intensity. As the coconut coir mat biodegrades, it gradually adds organic material to the soil while established vegetation takes over the long-term erosion control. Check your plans and local requirements to confirm that this lifespan matches your project needs.
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