Coir Logs for Bank Erosion

(Kiawah Island, SC)

We have bank erosion on our pond. A landscaper suggested coir logs with spartina grasses. What is the durability of this approach? Presumably, the coconut fibers deteriorate over time. The tidal variation is about 4-6 inches and the surface wind is frequent and said to be largely responsible for the erosion. The water depth at the bank averages just 8 inches. Any info about cocnut coir logs and their durability would be greatly appreciated.

Thanks for contacting Granite Environmental! I'd be happy to tell you about our Coir Logs. They are strong and flexible. These BioD-Roll^TM coir logs are compact coir cores which form a Coir Web for superior filtration, covered by exterior coir mesh netting. They aid in the stabilization and re-vegetation of sites where you encounter steep slopes or exposure to waves along or currents which cause instability on a site.

The logs are designed to help withstand wave impact and stormwater sheetflow forces without deformation or loss of material ensuring maximum erosion prevention. Furthermore, they enhance plant growth and microbial activity. In flowing water areas, the coir logs are placed directly on the bank, often retaining fill material or securing new channel alignment. In standing water, the coir logs are placed offshore to break waves and encourage sedimentation and re-vegetation. They also collect and hold mineral and organic particles, provide a stable substrate which promotes root growth, and slowly biodegrade to leave a self maintaining erosion prevention system.

Why Use RoLanka BioD-Roll^TM Coconut Coir Logs?

• Coir has high tensile strength which protects steep surfaces from heavy flows and debris movement.
• Coir Geotextile has three to five years longevity which allows for full plant and soil establishment, natural invasion and land stabilization.
• Being 100% natural and bio-degradable, coir fiber functions as a soil amendment
• Water absorbent coir fiber acts as mulch on the surface and as a wick in the soil mantle.
• The excellent micro-climate coir provides for plant establishment, natural invasion and balanced healthy growth.
• Coir meshes provides restoration of terrestrial and aquatic riparian habitat.
• Coir has the characteristic of being environmentally responsible and aesthetically pleasing.
• Capable of being customized to specific requirements/technical specifications according to the topographical conditions.
• Faster binding of soil
• Naturally resistant to mold & rot, hence needs no chemical treatment
• Excellent air and water permeability
• Enough sunlight passes through
• Holds the seeds and saplings in place
• Excellent medium for quick vegetation
• Degrades over a period of time 2 to 5 years
• Allows for deep rooting of plants and provides nutrients
• Easy to install and follows the contour of the soil surface
• Eco-friendly and non-polluting


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