Information on Coir Logs
Coir Log FAQs
GEI Works offers Coir Logs as versatile, multi-purpose erosion control solutions used in restoration projects, river bank protection, and hillside stabilization. Available in multiple diameters and interior densities, coir logs are a great choice for any erosion control or slope stabilization projects. GEI Works has fielded many questions about coir logs. Review the most frequently asked coir log questions below:
1. How do you connect coir logs?
2. How do you avoid gaps and spaces while connecting coir logs?
3. How are coir logs installed?
4. What coir log sizes are available?
5. How long do coir logs hold up?
6. What are GEI Works coir logs made of?
7. Do I need to remove the log after use?
8. Can I use vegetation with the log? What should I plant with the log?
9. What is the difference between a coir log and a coir wattle?
10. What are the different coir log applications?
GEI Works offers coir logs as 10-foot long erosion control solutions.It's true that most restoration projects require more than 10 feet of support, often significantly more! GEI Works is often asked if coir logs can be easily connected and if so, how.
Coir Log Lengths: Coir logs are typically 10 feet long because it allows for easy installation and maneuvering once they're on-site. They can certainly be connected to accommodate the needs of longer projects.
Joining Coir Logs: To join coir logs together in order to accommodate a longer bank, it's important to make sure that the end of one log is placed tightly against the end of another log and connected using coir twine, which can be interwoven between the netting surrounding each coir log. Coir twine is suggested as it is made from the same material as the rest of the product, allowing for even biodegrading and support.
Having gaps and spaces between logs will keep them from performing to the best of their ability. In order to avoid gaps and spaces around the coirlogs, they are tightly connected via coir twine and then staked into place with wedges. This helps to stabilize the log into a specific location on the site and prevent movement even against high water flows. Typical staking/anchoring can be seen below:
|Stream||Flow||Dia. of Log||Anchor Height||Anchor Spacing|
|Large||Heavy||20 in.||4 ft. min.||Every 2 ft.|
|Large||Moderate||16 in.||3 ft. min.||Every 2.5 ft.|
|Medium||Moderate||12 in.||30 in. min.||Every 3 ft.|
|Medium||Low||12 in.||30 in. min.||Every 3.5 ft.|
Typically, restoration projects:
- Dig a small trench where logs need to be placed
- Place logs in the trench
- Backfill the area with soil so that they are tightly packed against the slope
- Secure adjacent logs with coir twine
- Stake the logs into position
For more details, review the GEI Works Complete Coir Log Installation Guide.
Coir Logs are typically 10 ft. in length and are offered by GEI Works in diameters of 12, 16, or 20 inches depending on the size, scope, and goals of the project.
The lifespan for a coir log will vary significantly depending on where the log is placed and under what conditions it is used. In general, logs are rated with a lifespan that ranges anywhere from two to five (2-5) years. However, site conditions, such as wind, rain, water flows, and storms can influence how long a log will last before it biodegrades.
Coir logs feature an exterior made from coir twine netting and an interior that is filled with mattress coir fibers.
Once coir logs are installed on site, they will not require removal. Coir logs are made from 100% biodegradable materials. Over time,the coconut coir fibers will biodegrade, allowing for the nutrients in the fiber to mix into the surrounding environment to further enrich the site. For this reason, they will not typically require any maintenance or removal.
Coir logs can be implemented with vegetation, it is actually encouraged to encourage deep root growth and site stabilization long after the log has biodegraded. Since our logs do not typically come pre-vegetated, they will require vegetation to be purchased separately. Vegetation can be planted on or around the logs until they are allowed to grow. Over time they will grow into the surrounding logs. GEI Works suggests planting vegetation that is already native to the surrounding environment, so as not to disrupt the existing ecosystem.
Coir logs are typically larger in diameter and are significantly denser. When a person stands on these, the log will remain in place and will barely indent under the weight. A coir wattle is less dense and therefore has more give.
Coir logs are a great choice for most locations combating with erosion, runoff, or high flows. GEI Works' coir logs are designed as an all-natural erosion control solution, an ideal product for environmentally sensitive areas that need to consider local wildlife protection. Some of the most common coir log locations include:
- Stream Banks
- Construction Sites
If you have any additional questions or for more information on coir logs, please contact our
GEI Works product specialists at 1-772-646-0597.