What Is Composite Fencing? A Complete Guide for Australian Homeowners
When it comes to building a fence, Australian homeowners have plenty of options. Wood, metal, vinyl, and composite are the most common choices. Each has trade-offs in cost, durability, and maintenance.
This guide explains what composite fencing is, how it’s made, and whether it’s the right fit for your property. We’ll cover the genuine advantages, the real drawbacks, and how composite compares to other materials in Australian conditions.
Table of Contents
What Is a Composite Fence?
Composite fencing is a manufactured product made from a mixture of wood fibres and recycled plastics. The result is a material that looks similar to natural timber but resists many of the problems that timber fences face.
Unlike solid wood, composite does not absorb moisture in the same way. Unlike vinyl, it contains natural wood fibres that give it a more realistic texture. It sits in the middle ground, engineered to combine the appearance of wood with the resilience of plastic.
Composite fencing is now used in both residential and commercial settings across Australia. It is particularly popular in coastal and tropical regions where humidity and insect activity can shorten the life of traditional timber fences.
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How Composite Fencing Is Made
The manufacturing process involves several steps:
- Raw material preparation. Recycled plastics (typically HDPE or PP) are cleaned and processed into small pellets. Waste wood is ground into fine wood flour.
- Blending. The plastic pellets and wood flour are combined, usually in a ratio of roughly 40–60% wood to 40–60% plastic, depending on the manufacturer.
- Extrusion. The blended material is heated and pushed through a mould (die) to form boards, panels, or slats.
- Surface finishing. Some products receive a co-extruded outer shell for extra UV and scratch resistance. Others are embossed with a wood-grain texture.
Higher-quality composite products use co-extrusion technology. This adds a protective polymer cap layer around the core material. The cap layer improves resistance to fading, staining, and moisture penetration.
EVODEK’s composite fencing products are FSC-certified. This means the wood fibres used in production come from responsibly managed forests.
Composite vs Wood vs Vinyl vs Metal: A Quick Comparison
| Feature | Composite | Hardwood Timber | Treated Pine | Vinyl (PVC) | Aluminium |
|---|---|---|---|---|---|
| Typical lifespan | 25–30 years | 15–25 years | 10–15 years | 20–30 years | 30–50+ years |
| Upfront cost (per linear metre, installed) | AUD $150–$300 | AUD $120–$250 | AUD $80–$150 | AUD $100–$200 | AUD $200–$400 |
| Annual maintenance | Low (occasional wash) | High (stain/seal every 1–2 years) | High (stain/seal + termite treatment) | Low (occasional wash) | Low–Medium (rust check) |
| Termite resistant | Yes | Varies by species | No (requires treatment) | Yes | Yes |
| Appearance | Wood-look, multiple colours | Natural timber grain | Basic, needs staining | Uniform, plastic look | Modern/industrial |
| Environmental impact | Uses recycled materials | Requires new timber harvest | Requires chemical treatment | PVC manufacturing releases toxins* | Energy-intensive production |
| Heat retention | Moderate–High | Low–Moderate | Low–Moderate | High | Low |
Note: PVC manufacturing involves chlorine chemistry, which can produce dioxins and other byproducts. The degree of environmental impact varies by manufacturer and local regulations.
Source: Greenpeace PVC reports; Australian Government Department of Climate Change guidelines.
Advantages of Composite Fencing
Durability and Rot Resistance
Composite fencing does not rot, warp, or splinter the way natural timber does. The plastic content in the material prevents moisture absorption. This makes it especially suitable for areas with high rainfall or humidity.
A well-manufactured composite fence can last 25 to 30 years without structural replacement. By comparison, treated pine fences typically last 10 to 15 years, and hardwood timber fences last 15 to 25 years — even with regular maintenance.
Over 30 years, a composite fence often costs less in total than a timber fence. This is because timber requires periodic restaining, sealing, and board replacement, which composite does not.
Low Maintenance
Timber fences need staining or sealing every one to two years. They also require periodic inspections for termite damage, rot, and warping. These tasks cost both time and money.
Composite fences need only a wash with soapy water once or twice a year. No painting. No staining. No chemical termite treatments.
Because composite materials contain plastic, they are not a food source for termites or borers. This is a significant advantage in much of Australia, where subterranean termites cause millions of dollars in property damage each year (source: CSIRO termite research).
Straightforward Installation
Composite fence panels are lighter than solid hardwood boards. Many systems use a modular design, in which individual slats slide into aluminium or composite posts. This means a competent DIYer can install a composite fence without specialised equipment.
EVODEK’s panels, for example, use a tongue-and-groove system. Each slat slots into the next. The panels fit between pre-set posts. No heavy lifting of full-width panels is required.
That said, installation still requires proper post footings. In most Australian council areas, fence posts must be set in concrete to a minimum depth of 600 mm. Always check your local council’s fencing regulations before starting.
Environmental Considerations
Composite fencing uses recycled plastics and waste wood fibres. This diverts material from landfill and reduces the demand for virgin timber.
However, it is important to be realistic. Composite fencing is not a zero-impact product. The manufacturing process still requires energy, and the final product is difficult to recycle at the end of life because it blends wood and plastic together. Most composite boards will go to landfill when eventually replaced.
Compared to treated pine (which uses chemical preservatives like CCA or ACQ) and PVC (which involves chlorine-based chemistry), composite sits in a middle position on the environmental spectrum. It is better than some alternatives, but it is not a perfectly “green” product.
Aesthetic Variety
Modern composite fencing comes in a wide range of colours and textures. Co-extruded products closely mimic the grain and appearance of natural timber. Common colour options include charcoal, walnut, teak, grey, and light oak.
The colour is integrated during manufacturing. It goes all the way through the material (or through the protective cap layer). This means scratches are less visible than on painted timber.
EVODEK offers a range of colours, including silver birch, spice oak, and walnut. Custom colour matching is also available for larger projects.
Disadvantages of Composite Fencing
Every fencing material has genuine drawbacks. Here are the real limitations of a composite.
Higher Upfront Cost
Composite fencing costs more to purchase and install than treated pine or basic hardwood. Expect to pay AUD $150 to $300 per linear metre installed, compared to AUD $80 to $150 for treated pine.
While the lifetime cost may be lower due to reduced maintenance, the initial outlay is a genuine barrier for many homeowners. If your budget is tight, timber may be the more practical short-term choice.
Heat Absorption
Composite materials absorb and retain more heat than natural timber. On a hot summer day in Brisbane or Perth, a dark-coloured composite fence can become very warm to the touch.
This is rarely a safety concern for fences (unlike decking, where bare feet are involved). But it’s worth knowing. If you live in a hot climate, lighter colours will stay cooler.
Fading Over Time
Despite UV inhibitors, all composite fencing will experience some degree of colour change over time. Darker colours tend to fade more noticeably. This is a gradual process — typically visible after five to ten years.
Unlike timber, composite cannot easily be restained or repainted to refresh its appearance. If significant fading occurs, the affected boards may need to be replaced.
Higher-quality co-extruded products fade less than basic first-generation composites. Check the manufacturer’s warranty to understand what degree of fading is covered.
Not Easily Repaired or Modified
If a composite board is damaged, you generally need to replace the entire board. You cannot sand out scratches or fill gouges the way you can with timber.
Drilling into the composite is possible, but must be done carefully. Over-drilling can compromise the board’s internal honeycomb structure. Always pre-drill before inserting screws.
Quality Varies by Manufacturer
The composite fencing market includes products ranging from excellent to poor. Low-cost composites may use inferior recycled plastics, insufficient UV stabilisers, or weak bonding agents. These products can warp, fade rapidly, or delaminate.
When choosing a composite fence, look for products with a warranty of at least 15 years. Ask for test certifications and check whether the product meets relevant Australian standards.
End-of-Life Disposal
As noted above, composite boards are difficult to recycle. The wood-plastic blend cannot easily be separated. Most composite fencing ends up in a landfill at the end of its life.
This is an area where the industry needs improvement. Some manufacturers are beginning to explore take-back programmes, but these are not yet widely available in Australia.
Is Composite Fencing Right for Australian Climates?
Australia’s climate varies enormously by region. Here’s how composite fencing performs in different conditions.
- Tropical and subtropical zones (QLD, NT, northern WA): Composite performs well here. High humidity and termite activity are major problems for timber fences in these areas. Composite’s moisture and insect resistance are genuine advantages. Choose lighter colours to minimise heat absorption.
- Temperate zones (Sydney, Melbourne, Adelaide): Composite works well in these moderate climates. Fading is slower due to less extreme UV exposure. All colour options are suitable.
- Arid and semi-arid zones (inland NSW, SA, WA): Extreme heat and intense UV can accelerate fading. Co-extruded products with enhanced UV protection are recommended. Allow for thermal expansion gaps during installation — composite expands more than timber in high heat.
- Coastal areas: Salt spray can corrode metal fences and degrade some timbers. Composite is resistant to salt damage. However, check that the supporting posts and fixings are also marine-grade.
Cost Breakdown: What to Expect in Australia
The following estimates are for a standard 1.8 m high residential fence, professionally installed. Prices vary by region, site conditions, and product choice.
| Item | Estimated Cost (AUD) |
|---|---|
| Composite panels (per linear metre) | $80–$160 |
| Posts and fixings (per linear metre) | $30–$60 |
| Professional installation (per linear metre) | $40–$80 |
| Total installed cost (per linear metre) | $150–$300 |
| Typical 20 m fence — total | $3,000–$6,000 |
For comparison, a 20 m treated pine fence typically costs AUD $1,600 to $3,000 installed. However, add annual maintenance costs of $200 to $400, and the 15-year total cost of ownership approaches or exceeds that of the composite.
Note: These are indicative estimates based on 2025–2026 market pricing. Always obtain multiple quotes from local suppliers and installers.
Summary
Composite is a good choice for Australian homeowners who want a fence that will last a long time and doesn’t need a lot of upkeep. This is especially true in regions with a lot of humidity, by the shore, or where termites are common. The most important thing is to buy a good product from a well-known company, put it in the right way, and have reasonable expectations about how long the colour will last.
If you’re considering composite fencing, request samples from multiple suppliers. Compare warranties, check for UV and structural test certifications, and get quotes from at least two or three local installers before committing.
Frequently Asked Questions
How long does a composite fence last?
Most quality composite fences last 25 to 30 years. This depends on the product quality, installation method, and local climate conditions. Check the manufacturer’s warranty for specific guarantees.
Is composite fencing more expensive than wood?
Yes, the upfront cost is higher. Composite typically costs AUD $150 to $300 per linear metre installed. Treated pine costs AUD $80 to $150. However, composite requires almost no ongoing maintenance, so the total cost over 20 to 30 years is often comparable or lower.
Does composite fencing fade in the sun?
All composite fencing experiences some degree of fading over time. Darker colours fade more noticeably. Co-extruded products with enhanced UV stabilisers fade significantly less than standard composites. Most quality products come with a warranty that covers excessive fading.
Is composite fencing termite-proof?
Composite fencing is highly resistant to termites. The plastic content makes it unappealing as a food source. However, if the supporting posts are timber, those posts can still be attacked. Use steel or composite posts for a fully termite-resistant system.
Can composite fencing withstand strong winds?
Yes. Composite panels are both strong and flexible. They can handle typical wind conditions across Australia. However, like all fences, performance in extreme weather depends on proper post installation. Posts must be set deep enough and in concrete footings to resist wind loading.
Do I need council approval to install a composite fence?
In most Australian states, fences up to 2.0 m high on a side or rear boundary do not require a building permit. However, front fences, fences near driveways, and fences in heritage areas often have specific rules. Always check with your local council before building. The Dividing Fences Act also applies if the fence is on a shared boundary with a neighbour.
Will a composite fence expand and contract with temperature changes?
Yes. Composite materials expand in heat and contract in cold. This is normal. A properly installed composite fence accounts for this by leaving small expansion gaps between boards and at post connections. Follow the manufacturer’s installation guide to ensure correct gap spacing.
Is composite fencing environmentally friendly?
Composite fencing uses recycled materials. This is a positive. However, composite boards are difficult to recycle at the end of life because wood and plastic are bonded together. It is more environmentally friendly than treated pine (which uses chemical preservatives) but less recyclable than aluminium. No fencing material is perfectly sustainable.
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