What are Fibreglass Enclosures?

Fibreglass enclosures are durable and waterproof industrial solutions made from a composite material composed of glass fibres embedded in a polymer resin matrix. Fibreglass offers exceptional strength and resistance to harsh environmental conditions. These enclosures are widely utilised for housing electrical equipment, control panels, instrumentation, and machinery in diverse industries such as telecommunications, manufacturing, oil and gas, and transportation.

The process of manufacturing fibreglass enclosures involves layering multiple sheets of fibreglass matting that are saturated with polyester or epoxy resin onto a mould. This mould is then cured under controlled conditions to form a solid and rigid structure. The resulting enclosure exhibits remarkable mechanical properties such as high tensile strength, stiffness, and impact resistance. Additionally, the inherent water-resistant nature of fibreglass makes these enclosures an ideal choice for indoor and outdoor applications where protection against moisture is essential.

Now that we have explored the introduction to fibreglass enclosures let’s move on to uncover the key benefits they offer in industrial applications.

Fibreglass Enclosures

Key Benefits of Using Fibreglass

Fiberglass enclosures are a preferred choice across various industries, offering a range of practical benefits for various applications.

Let’s explore the key benefits of using fiberglass enclosures:

#1 Design Flexibility

Fibreglass enclosures offer design flexibility, allowing for customisation according to specific requirements. Enclosures can be manufactured in various shapes, sizes, and colours, accommodating unique equipment dimensions and aesthetic preferences. If you are interested in a bespoke option for enclosures please speak to our team who can help with the process.

#2 Strength & Durability

Fibreglass enclosures exhibit excellent durability due to their resistance to corrosion, UV radiation, chemicals, and impacts. This resilience allows them to maintain their structural integrity even in harsh environments.

#3 Electromagnetic Compatibility (EMC)

Fibreglass enclosures can be engineered with electromagnetic shielding properties, ensuring protection against unwanted interference or emissions from sensitive electrical components.

#4 Lightweight

Compared to traditional metal enclosures, fibreglass is significantly lighter. This lightweight property makes installation and transportation easier while reducing overall structural load requirements.

#5 Longevity

Due to their excellent resistance to environmental degradation, fibreglass enclosures have a long lifecycle and require minimal maintenance. This longevity translates into cost savings for businesses over time.

#6 Waterproof Properties

One of the standout qualities of fibreglass is its waterproof features. Fibreglass enclosures provide a reliable barrier against moisture intrusion, ensuring the integrity of the equipment housed within an excellent choice for storing electrics outdoors.

#7 Fire Resistant Properties

GRP enclosures are known for their fire-resistant properties, effectively preventing the spread of fire and enhancing safety in various applications. To further enhance fire safety of enclosures and prevent the spread of fire, some manufactures (like Adept)  finished their enclosures internally with a fire-retardant resin.

Consider how a telecommunications company could benefit from using fibreglass enclosures to house vital communication equipment at remote sites. The durability and waterproof properties of the enclosures ensure the uninterrupted operation of critical infrastructure even in challenging weather conditions.

Types of Fibreglass Enclosures We Make


Fibreglass cabinets are an essential type of enclosure used for storing equipment, tools, or other valuable items. They can come with lockable doors for added security. Cabinets are commonly seen in industrial facilities where organisation and protection of items are crucial.

These are just some of the many types of fibreglass enclosures available on the market. They offer durability, corrosion resistance, and weatherproof attributes that make them ideal for a wide range of industrial applications.

Adept GRP, GRP Kiosks, GRP Cabinets

Maintenance and Longevity

When it comes to industrial solutions, such as fibreglass enclosures, maintenance and longevity are critical factors to consider. Fibreglass enclosures are designed to be durable and able to withstand various environmental conditions, making them an excellent choice for protecting sensitive equipment in industries such as telecommunications, utilities, wind energy, and water treatment facilities.

One of the key advantages of fibreglass enclosures is their resistance to corrosion. Unlike materials like steel or aluminium, which can rust over time when exposed to moisture and harsh elements, fibreglass enclosures are waterproof and do not deteriorate easily. This makes them ideal for use in outdoor installations or areas prone to high humidity or wet environments. By choosing fibreglass enclosures, businesses can ensure the longevity and reliability of their equipment by providing a protective barrier that guards against moisture damage.

Moreover, fibreglass enclosures require minimal maintenance compared to other enclosure options. The non-porous nature of fibreglass means that it does not absorb water, preventing the growth of mould or mildew. This eliminates the need for frequent cleaning and reduces the risk of equipment malfunctions or failures caused by moisture-related issues.

Imagine a utility company that operates in a coastal area with high salt content in the air. The corrosive nature of saltwater can pose significant challenges for traditional enclosure materials like steel or aluminium. However, with fibreglass enclosures, the utility company can rest assured knowing that their equipment remains protected from corrosion caused by saltwater exposure.

To further illustrate the advantages of fibreglass enclosures in terms of maintenance and longevity, let’s compare them with alternative materials:

MaterialCorrosion ResistanceWater ResistanceMaintenance Requirements

As the table demonstrates, fibreglass enclosures outperform steel and aluminium when it comes to corrosion and water resistance. The low maintenance requirements of fibreglass further solidify its position as a durable and reliable choice for industrial applications.

Now that we have established the importance of maintenance and longevity in fibreglass enclosures, let’s explore another crucial aspect: the customization options available.

Customisation of Fibreglass Enclosures

Customisation can be seen as the icing on the cake when it comes to fibreglass enclosures – it takes an already exceptional product and tailors it to perfectly suit specific needs. Customisation allows businesses to optimise their use of fibreglass enclosures by adapting them to their unique requirements.

Adept GRP, a renowned provider of fibreglass enclosures, offers customers the opportunity to customise their enclosures in various ways. Contact our team to discuss the available options.

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