What are the differences between an aluminium basket and a fibreglass basket?
When choosing an aerial work platform, your decision is very often guided by working height, outreach, or basket capacity. This is perfectly logical, as these criteria directly determine what your teams will be able to achieve in the field.
However, the material used to manufacture the platform basket also deserves close attention. It influences durability, maintenance requirements, resistance to outdoor conditions and, in some cases, the electrical safety of the aerial work platform. At KLUBB, we offer either an aluminium basket or a fibreglass basket. As you might expect, each one is designed to meet different operational constraints.
The purpose of this guide is not to decide whether aluminium is a better material than fibreglass. It is rather to understand what each material makes possible, and then relate this to your trade, your working environment, and the risks associated with your operations.
Aluminium and fibreglass: two materials with different properties
Before discussing how they affect the practical performance of an aerial work platform, it is worth looking at the specific properties of each material. Aluminium and fibreglass do not react in the same way to moisture, corrosion, impact, ageing, or electricity.
This difference becomes even more significant during field operations. Your teams may have to work at height in a wide range of conditions, some more demanding than others:
- in the rain,
- in urban environments,
- on industrial sites,
- near electrical installations, and more.
The basket material should therefore be considered not only as a performance factor, but also as a safety factor.
Aluminium, a lightweight, durable and conductive material
Aluminium is widely used in industry because it combines several valuable properties:
- good resistance to corrosion and oxidation,
- high electrical and thermal conductivity,
- low density,
- strong reflectivity,
- high ductility,
- relatively high mechanical strength,
- and a comparatively moderate cost.
These technical advantages are also highlighted in a comprehensive guide published on the official ASM International website.
This resistance is partly due to the oxide layer that naturally forms on the surface of the metal. The technical document published by ASM and available through the NIST Materials Data Repository states that this thin layer adheres to the metal and does not flake off like the rust observed on iron or steel.
For an aerial work platform, this property has clear practical value. Since operators mostly work outdoors, the platform basket is exposed to rain, humidity, temperature variations, dust and splashes. In this respect, aluminium offers a durable solution, provided that the design and maintenance procedures are properly adapted.
However, what we recommend keeping in mind is that aluminium remains a material with very high thermal and electrical conductivity. This makes it poorly suited to work at height near high-voltage power lines, for example.
Aluminium can be highly relevant for standard applications, but it does not provide protection against electrical risk. If your teams work near electrical networks, the choice of basket must be considered as part of a broader assessment of the aerial work platform and its operating conditions.
Fibreglass, a resistant and insulating composite material
Fibreglass belongs to the family of composite materials. It may also be referred to as FRP, or fibre-reinforced polymer. The principle is to combine glass fibres with a resin in order to obtain a material that is lightweight, rigid and resistant.
This type of composite is valued for its favourable strength-to-weight ratio. The fibre provides mechanical strength, while the resin binds the structure together, protects the fibres and gives the component its final shape. The resulting properties therefore depend on the resin used, the type of fibre, the thickness, the manufacturing process and the quality of the finish.
Fibreglass is also sought after for its resistance to corrosion. Unlike aluminium, it does not rust. Technical guides dedicated to FRP composites indicate that these materials are an excellent choice when good resistance to moisture, chemical agents or aggressive environments is required.
Fibreglass composites are also, in most cases, poor conductors of both electricity and heat. However, this characteristic depends on the exact formulation of the composite. Certain additives, such as metallic particles or conductive fibres, can alter this behaviour.
A fibreglass basket, an insulated basket and a fully insulated aerial work platform do not refer to exactly the same thing.
Fibreglass offers valuable insulating properties, but the insulation performance of an aerial work platform depends on the entire design. The basket, boom, insulators, any liners, dielectric testing, maintenance procedures and applicable standards must all be taken into account.
Distinguishing between material properties and the actual performance of the aerial work platform
A material property provides a useful indication, but it is not enough to determine the actual performance of an aerial work platform during an operation. Aluminium may be lightweight, durable and resistant to corrosion. Fibreglass may be non-conductive and resistant to aggressive environments.
For an aluminium basket, you need to consider the alloy, surface treatments, assemblies, fixings, mechanical stresses and operating environment. For a fibreglass basket, you also need to take into account the resin, thickness, surface condition, absence of cracks, cleanliness and ageing of the composite.
Technical recommendations from the ACMA point out that most composites do not conduct electricity unless conductive materials are added. This property therefore remains linked to the formulation of the composite and to its actual condition over time.
In the case of an insulated aerial work platform, this distinction becomes even more important. The high-voltage tests we regularly carry out show that dielectric testing may apply to several components of an aerial work platform. Booms and hydraulic fluids are among them.
The insulating performance of an “insulated” aerial work platform therefore does not depend solely on the presence of a fibreglass basket. It depends on a complete set of components that must be tested and maintained.
What these properties change for an aerial work platform basket
In the field, an aerial work platform is exposed to varying levels of operational stress. It must carry one or more operators, their tools and, in some cases, additional equipment. It must also remain stable, be inspected regularly and retain its properties over time.
The basket is, in practical terms, a functional component. Its material should never be assessed in isolation. It must be understood within the overall design of the machine, alongside working height, outreach, permissible load, carrier vehicle, stabilisation system and operating conditions.
Weight, payload and basket capacity
On a vehicle-mounted aerial work platform, weight matters a great deal. It affects the remaining payload, the choice of carrier vehicle, the machine configuration and, in some cases, the possible applications.
This is especially true for vehicles with a limited gross vehicle weight, such as vans or chassis vehicles up to 3.5 tonnes.
Sur une nacelle montée sur véhicule, chaque composant compte. Le panier, la flèche, le porteur, les stabilisateurs et les équipements embarqués influencent l’équilibre général de la machine. Le matériau du panier est donc un critère utile, mais il ne remplace pas l’analyse globale de la configuration.
Corrosion and outdoor use
Aerial work platforms are rarely used in ideal conditions. They may be exposed to rain, humidity, dust, splashes, frequent washing, or more aggressive atmospheres depending on your activity.
Aluminium responds well to this constraint thanks to its natural oxide layer. The ASM/NIST document on aluminium explains that this layer protects the metal, and that properly treated alloys can resist water, salt and other environmental factors.
Fibreglass also offers strong resistance to corrosion, while being lightweight and non-conductive.
On this point, the two materials should not be opposed too quickly. Aluminium and fibreglass can both meet outdoor operating constraints. The real difference lies mainly in your application, the electrical risk, the design of the aerial work platform and the level of maintenance required.
Maintenance, inspection and ageing
An aluminium basket requires close attention to deformation, cracks, fixings, welds, impact marks and signs of localised corrosion. This is why we always recommend checking that the structure of an aluminium basket retains its mechanical integrity.
A fibreglass basket requires a different type of inspection. You need to monitor impacts, coating wear, water ingress, cleanliness and surface condition. This vigilance becomes even more important when the basket is part of an insulated configuration.
When is an aluminium basket relevant on an aerial work platform?
An aluminium basket is a sensible choice if you use your aerial work platform for standard operations. This may include maintenance, construction, industrial work, signage, urban maintenance, public lighting or telecommunications. In practical terms, as long as the operation does not require a specific insulated configuration, an aluminium basket is suitable.
However, it is important to remember that aluminium is conductive. It does not protect your operators against electrical risk. If your teams work near power lines, live networks or energised installations, the basket material cannot be selected as a simple matter of comfort or durability.
When is a fibreglass basket relevant on an aerial work platform?
Fibreglass becomes particularly relevant when your working environment requires proper consideration of electrical insulation. It is used in the design of certain insulated aerial work platforms intended for work near electrical networks or live installations.
However, you must avoid a dangerous misunderstanding. A fibreglass basket alone does not make an aerial work platform insulated. Insulation depends on the entire machine. It may involve the basket, the boom, insulators, liners, dielectric testing, maintenance, operating procedures and applicable standards.
Which trade applications can guide the choice of basket?
The choice between aluminium and fibreglass becomes clearer when you start from the actual application. An aerial work platform used for public lighting maintenance does not face the same constraints as one intended to operate near an electrical network.
| Trade application | Possible orientation | Selection rationale |
|---|---|---|
| Building maintenance | Aluminium basket | Standard use, with a need for lightness, durability and routine maintenance. |
| Urban signage | Aluminium basket | Frequent operations, outdoor exposure and a need for good manoeuvrability. |
| Industrial maintenance without electrical risk | Aluminium basket | Mechanical strength, regular use and sometimes demanding operating environments. |
| De-energised public lighting work | Aluminium or a specific configuration depending on risk assessment | The choice depends on the actual electrical environment and operating procedures. |
| Telecommunications | Aluminium or an insulated aerial work platform depending on the context | Constraints vary depending on the network, the site and proximity to energised equipment. |
| Work near power lines | Fully insulated aerial work platform | The basket material alone is not enough. The entire machine must be assessed. |
| Electrical networks / utilities | Insulated aerial work platform compliant with applicable requirements | Requires appropriate design, testing, maintenance and operating procedures. |
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How can you make a better-informed choice?
Your choice should start from the field. The material only makes sense if it matches your operating environment, your level of risk and the way your teams are organised.
| Criterion | Aluminium basket | Fibreglass basket |
|---|---|---|
| Main use | Standard work at height. | Work where electrical constraints may be present. |
| Weight | Lightweight. | Lightweight depending on the composite design. |
| Corrosion | Good resistance thanks to its oxide layer. | Very good resistance when the composite is properly designed and protected. |
| Electricity | Conductive. | Generally non-conductive in a suitable configuration. |
| Maintenance | Deformation, welds, fixings and localised corrosion. | Impacts, cracks, coating, water ingress and cleanliness. |
| Typical cases | Maintenance, construction, industry and urban maintenance. | Networks, utilities, power lines and live-line work. |
| Key point of attention | Does not protect against electrical risk. | Does not, on its own, make an aerial work platform insulated. |
Choosing the right basket starts with properly defining your application
Aluminium baskets and fibreglass baskets do not address exactly the same priorities. Aluminium is well suited to standard applications when you need a lightweight, durable and corrosion-resistant solution that can be easily integrated into a versatile aerial work platform.
The right choice therefore depends on your trade, your operating environment, the level of risk, basket capacity, machine design and applicable standards. To secure this decision, the most reliable approach is to speak with a specialist who can guide you towards the configuration genuinely suited to the way your aerial work platform will be used.
