Coir logs are one of the most widely specified erosion control products on Sydney construction, landscaping and civil engineering sites.
Made from compressed coconut fibre bound in coir netting, they trap sediment, slow water flow and give native vegetation a stable base to establish. Once the plants take hold, the log breaks down naturally and leaves nothing behind.
If you are working on a Sydney project that requires an erosion and sediment control plan, coir logs are almost certainly part of the specification. They are required on most council-approved earthworks, road construction and waterway rehabilitation jobs across the greater Sydney basin.
All Stake Supply stocks coir logs and erosion control products at our St Marys warehouse, with same-day dispatch available for Sydney metro orders.
Sydney councils and the NSW Environment Protection Authority (EPA) require erosion and sediment control measures on virtually every construction and earthworks project. The reference document for these requirements is the NSW Blue Book, formally titled Managing Urban Stormwater: Soils and Construction.
Under Blue Book guidelines, any site that disturbs soil must have an Erosion and Sediment Control Management Plan (ESCMP). Coir logs are one of the approved products for sediment barriers, channel linings and slope stabilisation within these plans.
The practical advantage of coir logs over plastic alternatives is that they do not need to be removed at the end of the project. They biodegrade in place over three to five years, which means less waste, lower decommissioning costs and a better environmental outcome.
Compliance tip: Keep delivery dockets and product specifications on file. Council inspectors on Sydney sites regularly check that installed erosion control products match what was specified in the approved ESCMP.
Coir logs come in several diameters, and picking the right size depends on the slope, the expected water flow and the depth of the channel or swale you are working with.
| Product | Diameter | Length | Best For |
|---|---|---|---|
| Coir Log 150mm x 3m | 150mm | 3m | Gentle slopes, garden beds, minor drainage swales, residential revegetation |
| Coir Log 200mm x 2m | 200mm | 2m | Medium slopes, creek bank edges, stormwater channel linings, council parkland restoration |
| Coir Log 200mm x 3m | 200mm | 3m | Same applications as 200mm x 2m but for longer runs with fewer joins |
| Coir Log 300mm x 3m | 300mm | 3m | Steep slopes, high-flow channels, construction site perimeters, major civil earthworks |
The 200mm diameter is the most commonly ordered size for Sydney projects. It handles the majority of medium-grade slopes and stormwater applications without being too heavy for a two-person crew to position by hand.
For large civil jobs, the 300mm log provides significantly more sediment-holding capacity and stands up better to concentrated water flow during heavy Sydney rain events.
Sydney is one of the highest-demand markets in Australia for coir logs because of the volume of construction activity, the steep terrain in many suburbs and the strict environmental controls around waterways and bushland.
Every major residential subdivision and commercial development across Sydney's Western Suburbs and South-West growth areas requires perimeter sediment control during the earthworks phase. Coir logs are installed along the downhill edge of disturbed ground to catch sediment before it reaches stormwater drains or neighbouring properties.
Council revegetation projects along creek corridors use coir logs to stabilise banks while native plantings establish. The Northern Beaches, Hills District and Upper Parramatta River catchment all have active waterway rehabilitation programs that specify coir products.
Coir logs are placed along the base and edges of stormwater channels to slow water velocity and trap sediment during rain events. They work well in open channels where hard engineering solutions would be excessive or environmentally undesirable.
Steep road cuttings, embankments and batters across Sydney use coir logs pegged horizontally across the slope face. Each log acts as a sediment trap and provides a stable planting pocket for tube stock. This is common on RMS (Transport for NSW) road projects and council infrastructure upgrades.
Correct installation is the difference between a coir log that performs for years and one that rolls downhill after the first heavy downpour. The method below is standard practice on Sydney construction and landscaping sites.
Staking matters: The most common installation failure on Sydney sites is using stakes that are too short or too thin. Hardwood stakes at 50mm x 50mm x 600mm minimum are the industry standard. Do not use star pickets, bamboo or softwood dowels.
Coir logs typically last between three and five years before they break down completely. The actual lifespan depends on moisture levels, soil contact, UV exposure and how quickly vegetation establishes through the log.
In permanently wet conditions like creek beds or stormwater channels, the coconut fibre breaks down faster, usually closer to the three-year mark. On drier slopes with good drainage, logs can remain structurally intact for five years or longer.
The key point is that by the time the coir log decomposes, the vegetation planted into and around it should have established a root network strong enough to hold the soil on its own. The log is a temporary scaffold for permanent biological erosion control.
Because coir is 100% biodegradable coconut fibre, there is nothing to remove at the end of the product life. This is a significant advantage over plastic silt fences, geotextile products and rock check dams that must be decommissioned and disposed of.
For contractors pricing a job, the elimination of removal and disposal costs makes coir logs more competitive on a whole-of-life basis than many synthetic alternatives.
Planning tip: Specify coir logs in your tender documents as a permanent install item with no decommissioning cost. This gives your bid a genuine advantage over competitors pricing synthetic barriers that include removal and landfill disposal.
All Stake Supply carries all standard coir log sizes at our St Marys warehouse in Western Sydney. Orders placed before midday on business days are dispatched the same day for Sydney metro delivery.
We supply direct to site for construction companies, civil contractors, councils and landscapers across the greater Sydney region. Bulk and trade pricing is available for ongoing project supply.
Browse the full range online or contact our team for trade pricing on your next erosion control order.
