Coir Log Installation Guide
Type 3.0m x 300mm diameter (pre-drilled or standard)Description
FLP Coir Bio-Logs are made of 100% natural and biodegradable Coconut Fibre and consist of tightly packed fibre wrapped in either 2mm Polypropylene netting (diamond shaped with a mesh size of 50mm) or our 5mm heavy duty coir yarn netting (diamond shaped with a mesh size of 50mm) and are typically 3.0m in length x 300mm diameter.
Our logs are supplied all pre-drilled with 250mm deep x 25mm diameter planting cores at 165mm spacing = 6 per metre or 18 per 3.0m log – these can be fastened using our good quality hardwood fixing stakes (untreated) – Minimum 60mm diameter pointed stakes, length dependant on site conditions, normally 1200mm long (no less than 900mm)Applications
FLP Coir Bio-Logs have many reinforcing and stabilisation uses from slope and bank stabilisation to managing stream flows, the shaping of channels, ponds and lakes. Our Coir logs are ideal for the promotion of new planting and can be used with all of our biodegradable Coir Geotextiles.Installation Guideline
FLP Coir Bio-Logs are easily installed and will naturally blend into the environment providing ground stabilisation and an excellent growth medium for plants. Prepare the chosen site prior to the installation of the coir logs by removing any large rocks or obstructions such as tree stumps to ensure that the log makes direct contact with the soil. A trench should be dug at a depth of no more than a third of the diameter of the log used e.g. 100mm trench for a 300mm diameter coir log.
Ensure that the coir logs are laid tightly together end to end and secured together with a coir rope or other suitable tie. Once in position the coir logs are secured in position with suitably sized untreated hardwood fixing stakes (minimum of 60mm diameter stakes no less than 900mm in length – longer stakes to be used for softer or more unstable soil conditions).
Stakes should be positioned 300mm from either end of the coir log and both sides. Spacing for other fixing stakes should be no more than one metre apart, both sides of the coir log (closer together in poorer more unstable soil conditions. The stakes should be driven between the outer netting and the core material of the coir log (not through the log) and the stake tops should be flush or just below the top of the coir log for safety reasons and overall appearance. We recommend that at least two thirds of the fixing stake be below the ground and a third above.
Additional anchorage can be achieved by tying the fixing stakes together and to the coir log with coir rope or another suitable material. Once the coir logs have been secured in position, you may wish to backfill just below the top level of the coir log for appearance and additional planting purposes.
The use of additional coir logs above the first row up a sloping bank to create steps or terraces to promote vegetation and prevent soil erosion. Where a taller face is required, the coir logs can be stacked on each other, stepping back the rows and securing the logs together with the use of stakes and coir rope or ties.
The use of our FLP Coir Rolls (Coir Erosion Control Mat) may be required dependent on the gradient and soil conditions of the site to provide additional soil stabilisation and to promote new vegetation, these are available in 400gsm, 700gsm, 900gsm and 1200gsm. Planting
FLP Coir Bio-Logs are supplied with pre-drilled 250mm deep x 25mm diameter planting cores at 165mm spacing = 6 per metre or 18 per 3.0m log length. It is advisable that all new planting is protected from birds and other wildlife with a protective net or mesh and removed when the plants are established.Maintenance
The installation should be inspected at regular intervals, particularly after severe weather conditions, checking the condition of the fixing stakes, replacing if necessary to ensure that the coir rolls are secure and remain in position. Protective netting should be removed once any planting has become established and is no longer required.
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