Chainwire security fencing can look simple from a distance, but its performance depends on a series of specification choices that are easy to overlook. The wire diameter, mesh aperture, coating, fence height, post system, bracing, tensioning, gates and security toppings all influence how the finished perimeter performs. A fence specified for a school boundary may therefore look similar to one around a logistics yard while being designed for a very different operating environment.
For project teams, the useful question is not simply whether chainwire is suitable. It is which chainwire configuration is suitable for the site. Australian Standard AS 1725.1 covers chain link fabric security fences and gates and provides options for factors such as height, fabric, wire coatings, service duty and security design. That reflects the practical reality that chainwire fencing should be selected as a system rather than treated as a single off-the-shelf product.
Boswen designs, fabricates and installs chainwire fencing for commercial, industrial, sporting, education and other sites across Melbourne and Victoria. This guide explains the main specification decisions to consider before a project moves to manufacture and installation.
Start with the security objective, not the mesh
Before selecting wire or posts, define what the fence needs to achieve. A boundary may be intended primarily to mark a property line, keep people away from operational areas, contain sporting activity, support CCTV visibility or provide a more deliberate intrusion deterrent. Those different objectives can lead to different heights, wire duties, post sizes, gate details and topping arrangements.
The site environment matters as well. Project teams should account for vehicle movements, exposure to accidental impact, wind, corrosive conditions, sloping ground, nearby vegetation, underground services, drainage, gate traffic and how closely the public can approach the fence. These conditions influence the supporting structure as much as the mesh itself.
1. Mesh gauge and aperture: the core of the fence fabric
Chainwire fabric is formed from interwoven steel wire. Two of the most important variables are the wire diameter, often referred to in project discussions as gauge, and the mesh aperture, which is the opening created by the woven pattern. They should be considered together rather than in isolation.
A heavier wire can provide a more robust fabric, while the aperture affects stiffness, visibility, climbability and the amount of steel in the mesh. Smaller openings can create a denser barrier but may increase material use and alter the visual character of the fence. Larger openings retain the familiar open appearance that makes chainwire useful where sightlines are important.
The right combination should follow the risk profile and intended use. A sports enclosure, school boundary and industrial perimeter do not necessarily need the same fabric even when all three are described as chainwire fencing. When comparing quotations, confirm that contractors are pricing the same wire duty and aperture rather than comparing only total fence height and length.
2. Galvanised or PVC-coated chainwire?
Coating selection affects corrosion protection, appearance and how well the fence fits its surroundings. Boswen currently offers galvanised chainwire as well as PVC-coated options, including black and green finishes.
Galvanised chainwire has the traditional metallic finish associated with industrial, infrastructure and utility-style boundaries. PVC-coated mesh can soften the visual impact of the fence and is often considered where presentation matters, such as schools, sports grounds and public-facing sites. The coating also provides an additional protective layer over the wire, although the total corrosion strategy should consider posts, rails, fittings, cut edges and the site’s exposure conditions rather than the mesh alone.
For coastal, chemical or otherwise aggressive environments, specification should be based on the actual exposure and maintenance plan. A more protective finish may be justified, but the surrounding steelwork and connection details must be compatible with that decision.
3. Fence height changes more than the amount of mesh
Height is one of the most visible specification decisions, but it also changes the structural and security requirements of the fence. Boswen’s chainwire range includes common heights from approximately 900 mm through 2400 mm and above, with custom configurations available for commercial and industrial applications.
A taller fence places different demands on posts, bracing and foundations and may also change how the fence behaves under wind. It can increase deterrence, but height alone does not create a high-security perimeter. The fabric, support system, ground clearance, gate design, nearby climb aids and any topping arrangement need to work together.
Project teams should also confirm planning, site, safety and client requirements before finalising height. Schools, sports facilities, industrial compounds and infrastructure sites may each have different functional or regulatory considerations.
4. Posts, rails and foundations carry the system
The mesh receives most of the visual attention, but posts and foundations are what keep the fence aligned and stable. Post spacing, section size, steel grade, footing depth and footing dimensions should suit fence height, ground conditions, wind exposure, loading and gate locations.
Top rails or other horizontal members can help stabilise the fence and maintain alignment. End posts, corner posts, strainer assemblies and posts beside gates normally have more demanding roles than intermediate line posts. A specification should therefore identify where stronger or differently braced supports are required instead of treating every post as interchangeable.
Site preparation is equally important. Soft ground, fill, retaining edges, pavements, concrete slabs and buried services can all affect how posts are founded. A site measure gives the contractor an opportunity to identify these conditions before installation starts.
5. Bracing and tension determine how finished chainwire behaves
Chainwire works as a tensioned system. The fabric needs to be properly strained between supporting posts and secured so the fence remains neat and functional over time. Poor tension can lead to sagging, movement and openings that reduce both appearance and security.
Bracing is particularly important at ends, corners, changes of direction and gate openings, where loads are transferred into the supporting structure. Long runs and uneven sites may require additional consideration. The contractor should be able to explain the proposed bracing arrangement and how tension will be maintained across the installed fence line.
This is also why maintenance matters. Periodic checks for loose mesh, damaged ties, bent posts, coating damage and movement around high-impact areas can prevent small defects from developing into larger perimeter failures.
6. Site-tensioned mesh or framed cyclone fence panels?
Most long perimeter runs use mesh tensioned between posts, but framed chainwire or cyclone fence panels can be useful where a modular, rigid element is needed. Panels can suit selected gates, enclosures, plant areas, temporary interfaces or locations where the mesh benefits from being contained within a fabricated frame.
The choice is not simply aesthetic. Site-tensioned mesh is efficient for long, continuous boundaries and can adapt to changing ground. Framed panels introduce additional steelwork and connection points but can provide a defined modular section. The project layout, access, security objective and fabrication requirements should determine which approach is appropriate.
Boswen should be approached as a fencing contractor providing a designed and installed system, not as a retail chainwire fence supplies shop. Components are selected as part of the project specification and coordinated with the rest of the perimeter.
7. Security toppings should match the risk and the environment
Where a standard fence height does not provide the required deterrence, the upper portion of the fence can be configured with additional security measures. Boswen identifies barbed wire and razor wire among the available options for selected chainwire systems.
These treatments should never be added by default. Their suitability depends on the site, public exposure, safety obligations, access for maintenance, adjoining land uses and the client’s security requirements. A topping that may be appropriate around a controlled industrial compound could be unsuitable for a public-facing or education environment.
The post and extension-arm arrangement must also be designed for the selected topping. Adding extra material above a fence changes loading and creates additional connection requirements. The final configuration should be documented before fabrication rather than improvised on site.
8. Gates need the same level of specification as the fence
A perimeter is only as effective as its access points. Gate width, opening direction, frequency of use, vehicle type, automation, access control and ground conditions should be resolved alongside the fence specification.
Boswen can integrate chainwire fencing with pedestrian gates, swing gates, sliding gates and other site access systems. For vehicle openings, project teams should consider clear opening width, approach geometry, queuing space and how the gate interacts with trucks, forklifts, staff vehicles or visitors. For pedestrian gates, latch operation, access control, emergency requirements and user flow may be more important than raw opening width.
Gate posts and foundations are commonly subject to higher loads than ordinary fence posts, particularly where leaves are wide or automated. Treating the gate as a separate engineered element while matching it visually and functionally to the chainwire perimeter usually produces a more reliable result.
Chainwire specification table: what to decide before requesting a quote
| Specification item | What it affects | Questions to resolve |
| Mesh wire and aperture | Strength, stiffness, visibility and fabric density | What duty is appropriate for the site’s risk and use? |
| Coating | Corrosion protection and appearance | Galvanised or PVC-coated? What exposure conditions apply? |
| Fence height | Deterrence, structure and visual impact | What height is required by the site brief and local constraints? |
| Posts and foundations | Overall stability | What are the soil, pavement, wind and impact conditions? |
| Rails and bracing | Alignment and load transfer | Where are ends, corners, gates and high-load sections? |
| Mesh format | Continuity or modularity | Continuous tensioned mesh or framed panels? |
| Security topping | Additional intrusion deterrence | Is a topping appropriate and permitted for the site? |
| Gates | Access and perimeter integrity | What opening, traffic, automation and access-control requirements apply? |
| Maintenance plan | Long-term performance | Who will inspect tension, coatings, posts, fittings and gates? |
How to write a better chainwire fencing brief
A useful project brief gives the contractor enough information to recommend a system rather than guess at one. Before requesting pricing, record the approximate fence length, required height, site address, intended purpose, preferred finish, gate locations and opening widths, security expectations and any known site constraints. Photographs, plans and information about slopes, pavements or retaining walls can improve early scoping.
For tendered or consultant-led work, define the required performance and applicable standards rather than relying only on a generic product name. AS 1725.1 remains a useful reference for chain link fabric security fences and gates because it recognises multiple combinations of height, fabric, coating, service duty and security design. Project-specific engineering, authority requirements and client standards may also apply.
This level of detail makes quotations easier to compare and reduces the chance that an apparently lower price is based on lighter materials, different foundations, fewer rails or an incomplete gate scope.
Choosing the right chainwire security fencing system
There is no single ‘best’ chainwire specification for every Melbourne project. The strongest result comes from matching the fabric, supports, coatings, gates and optional security measures to the site’s actual operating conditions.
For industrial and logistics sites, durability, vehicle access and perimeter deterrence may dominate the brief. Schools and sporting facilities may place greater emphasis on visibility, user safety and presentation. Infrastructure projects may have their own client standards, access constraints and maintenance expectations. The same basic fencing family can be configured differently for each setting.
Boswen’s chainwire fencing service covers design, fabrication and installation, including galvanised and PVC-coated mesh, different heights and wire duties, gates and selected security enhancements. A site measure allows the team to confirm ground conditions, access points and the intended security level before recommending a project-specific system.
Get a project-specific chainwire specification
Planning a chainwire fence for a commercial, industrial, school, sports or infrastructure site? Book a site measure with Boswen to review the fence line, required height, mesh and coating options, gates, ground conditions and security requirements before installation.
Frequently asked questions
What is the difference between chainwire and chainmesh fencing?
The terms are commonly used for the same woven steel fencing system. “Chain link”, “chainwire”, “chainmesh” and “cyclone fencing” can describe closely related products, although project specifications should still define the exact fabric, coating, height and support system required.
Is heavier-gauge chainwire always better?
Not necessarily. Heavier wire can increase robustness, but the correct specification depends on the site risk, aperture, height, post system and intended use. Selecting the heaviest available material without considering the rest of the system may add cost without solving the actual project requirement.
Is galvanised or PVC-coated chainwire better?
Both can be appropriate. Galvanised mesh provides the traditional metallic finish, while PVC-coated mesh can provide a different appearance and an additional protective layer. Exposure conditions, visual requirements and the finish of posts and fittings should be considered together.
Can chainwire security fencing include barbed or razor wire?
Selected chainwire systems can incorporate security toppings such as barbed or razor wire, but suitability depends on the site, safety obligations, adjoining uses and the required security level. The supporting post and extension arrangement should be designed for the selected topping.
Can chainwire fencing follow sloping ground?
Chainwire is adaptable to many changing ground profiles, but slopes, retaining walls and level changes should be identified during the site measure so posts, mesh tension and gate interfaces can be planned correctly.
Does Boswen sell chainwire fence supplies separately?
Boswen’s published service is focused on supplying, fabricating and installing complete fencing systems. For a project, the mesh, posts, rails, gates and fittings should be selected as part of a coordinated specification. Confirm any supply-only requirement directly with Boswen before ordering.
