Erosion Control Coir Block

Slope Stabilization, Streambank Restoration, and Stream Relocation

coir blocksThe GEI Works' coir blocks are biodegradable erosion control solutions designed to help retain sediment and prevent erosion. Constructed entirely from natural, biodegradable coir coconut fiber, each block features a main bulk section and two layers of fabric (one bottom layer and one top layer). The design ensures a reliable system that can support vegetative growth and help prevent erosion in environmentally sensitive areas such as rivers, lakes, streams, wetlands, and other coastlines.

Questions? Call the GEI Works team and ask about our erosion control blocks at 1-772-646-0597 or request pricing.

The design of the erosion control coir blocks features an interior block system that is either 12 inches or 16 inches tall and made from densely packed mattress coir. Blocks are 10 feet in length and form a solid layer or row of support. Each block is then wrapped in a layer of woven coir fabric. Fabric is designed to cover 3 sides of the block, leaving the back end open for soil or dirt. This combination of strength and stability provides a consistent height on slopes, hills, banks, inlets or soil lifts.

Before and After

Hover over the image above to see the results 8 months after coir block installation

Standard Specifications
Product Flyer

Product Flyer

Installation Installation


Unit weight 3.34 lbs./ft.
(5 kg/m)
4.47 lbs./ft.
(6.6 kg/m)
4.87 lbs./ft.
(7.3 kg/m)
Block size

12 in. (30 cm)
5 in. (13 cm)
10 ft. (305 cm)

16 in. (40 cm)
9 in. (23 cm)
10 ft. (305 cm)

16 in. (40 cm)
9 in. (23 cm)
10 ft. (305 cm)
Fabric length

47 in. (117.5 cm)
47 in. (117.5 cm)

28 in. (71 cm)
56 in. (142 cm)

48 in. (122 cm)
75 in. (190 cm)
Tensile strength
of fabric



1740 lbs./ft.
(25.4 kN/m)
1176 lbs./ft.
(17.2 kN/m)

1740 lbs./ft.
(25.4 kN/m)
1176 lbs./ft.
(17.2 kN/m)

1740 lbs./ft.
(25.4 kN/m)
1176 lbs./ft.
(17.2 kN/m)
Fabric length at
female end
6 in. (15 cm) 6 in. (15 cm) 6 in. (15 cm)

The Erosion Control Block

erosion control blocksGEI Works' erosion control blocks have been frequently used in a range of erosion control projects, bioengineering applications, and construction site areas. Some of the more common uses for these products include the following:

  • Landscaping
  • Stream Bank Restoration
  • Stream Relocations
  • Slope Stabilization
  • Inlet Filtration
  • Soil Lifts

Benefits to Erosion Control Block Usage

  • Helps with Fabric Wrapped Soil Layers
  • Longer Protection for Soil Wraps
  • Rectangular Shape Provides Better Soil Support
  • Reduced Installation Time and Project Costs

coir erosion control blocksWhen using these blocks, multiple units are placed together to create one long block that is able to stretch along the entire shoreline, slope, or riverbank. When connecting the blocks, each unit typically features a male side and a female side. To connect the blocks, the male side of one coir block can be connected to the female side of the adjacent coir block. This setup is repeated throughout the entire length of the erosion control project site.

For increased connection and stabilization, extended coir block fabric can be placed on top of the blocks to create a long, stable structure. This setup also helps to provide a consistent layer of height for soil lifts.

Other Coir Product Options

coir logsCoconut coir products are some of GEI Works' most robust and environmentally friendly erosion control solutions. In addition to the coir blocks featured here, we also offer several other coconut fiber products including open weave coir mats, high strength coir logs, high filtration wattles, and more.

For more information on each of these products and how they can work on an erosion control project site, review product pages for:

Read the answers to some Frequently Asked Questions about Coir.

GEI Works carries a full line of coir products for erosion control. For pricing or questions about any of our products, give us a call at 1-772-646-0597 or request a price quote.