Geo fabric is a permeable textile material used to stabilise soil, manage water flow, prevent erosion, and control weed growth in landscaping and civil engineering projects.
From residential garden beds to large-scale infrastructure projects, geo fabric plays a critical role in ground preparation and long-term site stability. Without it, soil erosion, drainage issues, and weed invasion can compromise the integrity and lifespan of driveways, retaining walls, embankments, and landscaped areas.
This article explores the practical applications of geo fabric, how to choose the right type for your project, and the most common mistakes to avoid when installing it. Whether you're a landscaper, civil engineer, or homeowner, understanding what geo fabric is used for will help you make informed decisions and ensure your projects stand the test of time.
Geo fabric serves four main functions across residential, commercial, and civil applications. Each function addresses a specific challenge related to soil stability, drainage, or vegetation control.
The type of geo fabric you choose depends on which function is most important for your project. Woven fabrics offer higher tensile strength for load-bearing applications, while non-woven fabrics excel at filtration and drainage.
Erosion is one of the most common challenges faced by councils, civil engineers, and land managers across Australia. Sloped terrain, heavy rainfall, and exposed soil all contribute to sediment runoff and site degradation.
Geo fabric helps stabilise embankments and prevent soil loss by anchoring the surface and allowing vegetation to establish. When used in combination with natural materials like coir logs, it provides both immediate protection and long-term stabilisation.
Coir logs are biodegradable erosion control products made from coconut husk fibres. They work particularly well on slopes, creek banks, and stormwater channels where natural filtration and vegetation establishment are priorities.
All Stake Supply has supplied erosion control products to councils and civil contractors across Australia since 1976, and the most common mistake we see is underestimating the scale of coir logs required for the site's slope gradient. A steeper grade always demands a larger diameter and closer spacing between logs to prevent washout during storm events.
For guidance on erosion management regulations and site-specific requirements, the Australian Department of the Environment provides frameworks that many local councils and land authorities follow when assessing compliance.
One of the most practical applications of geo fabric in residential and commercial projects is under gravel driveways, pathways, and car parks. Without a separation layer, the base aggregate gradually sinks into the subgrade, creating ruts, potholes, and uneven surfaces.
Installing geo fabric between the subgrade and aggregate layer prevents this mixing and extends the lifespan of the surface. It distributes load more evenly, reducing maintenance costs and the need for frequent top-ups.
Pro Tip: Always overlap geo fabric joins by at least 300mm to prevent soil migration at the seams. Secure edges with steel pins or staples to stop fabric shifting during aggregate placement.
This process applies equally to commercial pathways, equipment pads, and temporary access roads on construction sites. The key is ensuring the fabric remains taut and unbroken during aggregate placement to maintain separation.
Non-woven geo fabric is the preferred choice for drainage applications because of its superior filtration properties. It allows water to pass through while trapping fine soil particles, preventing clogging in drainage pipes, french drains, and behind retaining walls.
Water pressure behind a retaining wall is one of the leading causes of structural failure. Installing this 1m x 50m non-woven geotextile roll along the back face of the wall, combined with ag drainage pipe and gravel backfill, allows water to drain safely without building hydrostatic pressure.
For larger retaining walls or stormwater drainage trenches, the 2m wide version of this drainage fabric covers more area per roll, reducing the number of seams and speeding up installation on linear drainage systems.
All Stake Supply stocks both widths in 100gsm non-woven fabric, which is the industry standard for most residential and light commercial drainage applications. Heavier weights are available for civil projects with higher filtration demands or aggressive soil conditions.
| Application | Fabric Type | Recommended Weight |
|---|---|---|
| French drains and ag pipe wrap | Non-woven geotextile | 100gsm – 150gsm |
| Retaining wall drainage | Non-woven geotextile | 100gsm – 200gsm |
| Sediment control fencing | Non-woven geotextile | 150gsm – 200gsm |
| Subsurface drainage in sports fields | Non-woven geotextile | 200gsm – 300gsm |
Always wrap drainage aggregate completely with fabric, creating a continuous envelope that prevents soil intrusion from any direction. Leaving gaps or poorly secured edges defeats the purpose of filtration.
Woven geo fabric is the most effective long-term solution for weed suppression in garden beds, pathways, and beneath mulch or decorative stone. Unlike plastic sheeting, woven fabric is UV-stabilised, water-permeable, and durable enough to withstand foot traffic and repeated mulch top-ups.
The fabric blocks light from reaching the soil surface, preventing weed seeds from germinating while still allowing water, air, and nutrients to penetrate. This makes it ideal for low-maintenance landscaping and areas where herbicide use is restricted or undesirable.
For standard residential garden beds and narrow pathways, this 0.91m x 50m woven mat is the most practical width, covering typical bed widths in a single pass with minimal wastage.
Larger projects like commercial landscaping, playground surrounds, or extensive mulched areas benefit from the 1.83m wide roll, which reduces the number of joins and speeds up installation on broader surfaces.
For civil projects, bulk landscaping contracts, or large-scale site preparation, this heavier 5m x 100m weed mat at 110gsm offers maximum coverage and durability, particularly in high-traffic or exposed environments where lighter fabrics may degrade prematurely.
Common Mistake: Laying weed mat over existing weeds or uneven ground reduces effectiveness. Always clear the area, level the surface, and secure the fabric with pins or staples before applying mulch or stone.
The two main categories of geo fabric are woven and non-woven, and each is engineered for different applications. Using the wrong type can lead to premature failure, poor drainage, or inadequate load distribution.
Woven fabric is manufactured by interlacing polypropylene threads, creating a strong, flexible material with high tensile strength. It is used where load-bearing capacity and puncture resistance are priorities.
Non-woven fabric is produced by bonding polypropylene fibres together mechanically, chemically, or thermally, resulting in a felt-like material with superior filtration and permeability. It is the preferred choice for drainage and erosion control.
All Stake Supply offers both woven and non-woven options across a range of weights and widths to suit every project. If you're unsure which type is right for your application, contact the team for technical advice based on your site conditions and load requirements.
Proper installation is just as important as choosing the right fabric. Even high-quality geo fabric will underperform if laid incorrectly or on unsuitable ground.
Having supplied over 1,000 environmental and landscaping products nationwide since 1976, All Stake Supply has seen how these installation errors can compromise even the best materials. The difference between a project that lasts decades and one that fails within months often comes down to preparation and attention to detail during installation.
Whether you're a landscaper preparing a residential garden bed, a civil engineer managing a large-scale infrastructure project, or a council worker restoring an eroded creek bank, sourcing reliable geo fabric with consistent quality and timely delivery is non-negotiable.
All Stake Supply stocks a comprehensive range of woven and non-woven geo fabrics in multiple widths and weights, along with complementary products like coir logs, tree guards, and erosion control solutions. Based in St Mary's, they deliver nationwide and offer trade pricing for bulk orders.
Browse the full product range or reach out to the team for technical advice on fabric selection, installation methods, and project-specific recommendations. With decades of experience supporting Australian landscapers, engineers, and councils, All Stake Supply provides both the products and the expertise to ensure your project succeeds.
