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Security Cages for Commercial Sites: From Design to Completion

Security cages used for industrial sites to secure equipment.
Security cage for industrial businesses in brisbane. this cage was built to secure and electrical transformer

Security is a priority for any business operating within a commercial or industrial setting. Whether it involves isolating equipment, safeguarding controlled stock, or complying with WHS protocols, having designated, secured areas within a facility is critical to both safety and operations. This is where commercial-grade security cages come into play. Unlike basic storage cages commonly installed in apartment basements or car parks, these systems are purpose-built to meet the rigours of commercial use. They are made from heavier materials, engineered to resist tampering, and designed to align with both operational demands and regulatory requirements.

This article outlines how commercial security cages differ from residential-grade storage enclosures, and how they’re used in real-world business environments. The goal is to provide clear guidance to help organisations choose a cage that serves its intended purpose and stands up to the demands of daily use.

Understanding the Role of Security Cages vs. Storage Cages

Security cages are fixed, steel mesh enclosures used to control access within commercial premises. Typically constructed using galvanised chain wire or weldmesh panels, these cages are mounted to rigid steel posts and frames, secured either via bolt-down footplates or concreted in-ground. Access is managed through hinged or sliding gates, often fitted with commercial-grade locks or access systems. These cages vary widely in scale—some are compact, designed to secure a server rack or chemical cabinet; others span entire zones within warehouses or factories.

It’s important to draw a clear line between security cages and the lighter-duty storage cages used in residential settings. The differences go far beyond material thickness.

  • Storage cages: Typically installed in shared car parks or apartment basements, storage cages are designed for convenience and basic access control. They’re commonly used by tenants to store personal items like bicycles, luggage, or seasonal equipment. These cages are usually lightweight and non-custom, prioritising layout efficiency rather than high-level security.
  • Security cages: Built for industrial and commercial use, these cages are engineered with higher gauge steel mesh, heavier-duty posts, and reinforced gate hardware. They’re designed to deter break-ins, protect critical infrastructure, and comply with workplace safety codes. Many commercial cages are fitted with barbed wire extensions, restricted access hardware, and signage to prevent unauthorised entry.

When selecting a cage, it’s critical to assess the environment and the risk profile. A residential-grade solution may look similar at a glance, but won’t hold up to the pressures of commercial use or meet safety and compliance requirements.

Security Cage Applications in Commercial Environments

Security cages are used in a wide range of industries and site types. Regardless of the environment, the goal is the same: restrict access, reduce risk, and control how goods or infrastructure are physically protected on-site. Below are some of the most common commercial use cases, along with the reasons businesses rely on cages in each setting.

  • Warehousing and logistics: Within high-volume storage environments, cages are often used to isolate expensive inventory, prevent unauthorised access to restricted products, or comply with insurance conditions for asset protection. This can include alcohol, electronics, or items subject to theft or diversion risk.
  • Data centres: In co-located server environments, security cages allow for physical separation between tenants. These cages prevent unauthorised hardware access, assist in rack-level asset control, and are often integrated with facility-wide access control systems.
  • Retail and shopping centres: Behind-the-scenes stock areas frequently require secure enclosures for high-value items, clearance stock, or alcohol. In multi-tenant complexes, cages also serve to separate one retailer’s goods from another’s within shared dock spaces.
  • Construction sites: Tools, consumables, plans, and machinery are regularly stored on active construction sites. Lockable cages protect these from theft and damage during off-hours and make it easier to manage who has access to site-critical resources.
  • Factories and workshops: Many industrial facilities use cages to limit access to dangerous equipment or chemicals. Where WHS risk assessments identify exposure risks, enclosures ensure only authorised and trained personnel can access that part of the floor.
  • Utilities and infrastructure: Cages are used to secure switchboards, control panels, water pumps, and telco hardware from unauthorised tampering. These applications often call for full enclosures with ceilings and tamper-proof fixings, especially when equipment is exposed to the public or housed outdoors.

Each site is different. Some cages are installed inside air-conditioned warehouses, others outdoors beside substations or telecom towers. The specifications must match the demands of the environment and the expectations of the operator. This is why engaging an installer with commercial experience matters—cutting corners on materials or layout can compromise the entire system.

security cage installed at a council facility to create secured storage on the gold coast
commercial security cage installed on the gold coast with barbed wire to enclose a pumping facility yet to be installed

Planning and Design

Designing a commercial security cage involves far more than just assembling mesh panels and bolting them to the floor. The solution must be developed with a clear understanding of the specific risks involved, the layout of the site, and any operational or compliance requirements relevant to the facility.

Defining the Purpose of the Security Cage

The starting point in any cage design is understanding what it needs to achieve. If the cage is intended to restrict access to dangerous goods, the design will differ significantly from one built to deter theft or separate tenant infrastructure. A cage used to house hazardous materials, for example, may require non-flammable materials, clear hazard signage, and emergency egress features. In contrast, a cage protecting high-value inventory may prioritise restricted visibility, CCTV integration, and anti-climb mesh.

Selecting the Right Chain Wire and Framework

Chain wire mesh is the only fencing material Apollo Fencing uses for our commercial security cages—and for good reason. When specified correctly, it offers the ideal balance between visibility, airflow, cost-efficiency, and security. The key is not just in using chain wire, but in choosing the right configuration to suit the application and environment.

Wire diameter is a critical consideration. Lighter gauges such as 2.50 mm may be sufficient for internal cages where the risk of tampering is low, but higher-risk applications typically require 3.15 mm or heavier. Thicker wire not only resists cutting and deformation, but it also performs better over time in high-contact or frequently accessed enclosures.

The mesh aperture—often referred to as the diamond size—should also reflect the security level required. A 50 mm diamond is standard for most installations, but smaller apertures can be used where climbing deterrence or restricted access to contents is a concern.

Coating type plays a role in durability, especially in high-humidity environments or facilities with corrosive exposure. Galvanised wire is suitable for most indoor and dry-area installations. In harsher environments—such as coastal regions or chemical storage areas—a PVC-coated finish provides an added layer of corrosion resistance and extends the life of the mesh.

Framework matters just as much as mesh. Posts and rails must be structurally sound and built for long-term use. All vertical posts should be hot-dip galvanised to prevent corrosion at the base or footing. Powder coating is optional but recommended in high-traffic zones or visually prominent areas. Rails, bracing, and gates should use medium to heavy-wall steel tube—not lightweight substitutes—particularly where the cage is accessed regularly or exposed to incidental impact.

Layout and Dimensions

The physical layout of a security cage must account for not just its current purpose, but how the space around it is used now and in future. Misjudging dimensions can result in bottlenecks, blocked service access, or code violations.

  • The internal space should accommodate the intended equipment, storage racks, or clearance for personnel, including comfortable working access where applicable.
  • Gates must have adequate room to swing or slide open without obstruction or posing risk to nearby walkways or operations.
  • Height may be influenced by compliance needs or ceiling-based services like lighting and fire sprinklers.
  • Future expansion should be considered. If additional cages may be added, design the system using modular panels to make this easier down the line.

A poor layout can disrupt workflows or fail to meet legal safety standards, especially in shared or multi-tenant facilities.

Access Control

The security level of the mesh and frame is only as effective as the gate hardware. Access must be tailored to the users, risk level, and operational environment.

  • Mechanical locks: These include keyed locks, deadbolts, or padlockable latches. They’re suitable for low-traffic areas where few people require access.
  • Electronic systems: Swipe cards, coded keypads, or biometric readers allow controlled access and logging, ideal for workplaces with multiple users or shift changes.
  • Emergency egress hardware: Where cages enclose personnel or hazardous substances, compliance with fire codes may require internal push-to-exit bars or automatic fail-safes during emergencies.

Fixings and Foundations

The foundation system used affects the security, stability, and longevity of the cage. The two primary installation methods are bolt-down and in-ground fixing.

  • Bolt-down: Ideal for concrete slabs and internal warehouse floors. It allows for future relocation and typically requires less site preparation.
  • In-ground posts: More permanent, as the posts are concreted below surface level. They offer greater resistance to tampering and are more suitable for external or high-risk locations.

All fasteners and anchor points must be tamper-proof. Even a well-constructed mesh panel can be rendered useless if it’s fixed with exposed, removable bolts.

Compliance and Standards

Compliance is non-negotiable when security cages are installed in commercial settings. Depending on what’s being enclosed and where the cage is located, different Australian Standards may apply.

  • AS 1725: Governs the construction of chain wire fencing, including tensioning, wire diameter, and post spacing.
  • AS/NZS 1170: Covers structural loading, which is relevant where wind load or impact resistance must be considered.
  • Fire safety regulations: These dictate clearances for sprinkler access, emergency egress routes, and the use of non-flammable materials where applicable.
  • WHS and Safe Work codes: Especially relevant for cages enclosing chemicals, tools, or areas accessible by staff.

Skipping or misunderstanding regulatory obligations often leads to retrofitting, re-certification, or complete removal of non-compliant structures. If there’s any uncertainty, experienced installers should liaise with your certifier or project manager during planning.

Why a Fit-for-Purpose Security Cage Matters

A security cage is not just a physical barrier—it’s a control measure that directly supports operational integrity, safety compliance, and asset protection. When properly designed and installed, a cage becomes part of the infrastructure, not an afterthought. It allows businesses to manage risk without compromising workflow, maintain clear separation of duties within a facility, and meet the increasingly complex standards imposed by insurers, regulators, and clients.

The key is in the detail. It’s not enough to install mesh panels and call it secure. The materials must be matched to the environment, the access points must reflect how the space is used, and the layout must account for both current operations and future changes. A generic or under-specified cage may look adequate on paper, but it won’t stand up to scrutiny if subjected to tampering, safety audits, or operational wear.

Commercial fencing companies with experience in industrial applications understand this. They design systems that are structurally sound, compliant with code, and aligned with how the space is actually used. That’s what separates a well-integrated security cage from a temporary fix that needs to be replaced a year later.