GRP Mouldings for Vehicles, Architecture and Industry


Fibreglass moulding doesn't just look good, it's often cheaper than alternative materials. And it can be used for so many different applications – for your vehicles, buildings and furnishings.

As leading manufacturers of GRP mouldings, we can provide you with high quality fibreglass products and a complete service that transforms your designs into the polished, final product.

Standard or custom specifications

We can provide the high quality parts you need for the automotive industry, agricultural machinery and spill control use, fast.

Whether you have standard parts you'd like us to manufacture, or you've commissioned a bespoke design for a single item, you can rely on us to create GRP mouldings you need for any situation.

Automotive and industrial

From GRP mouldings for tractors and crop sprayers to tank lids and plant housing, almost any vehicle or industrial process can benefit from the protection, longevity and low maintenance costs of GRP fibreglass.

Architecture to furniture

Sui Generis has created bespoke architectural mouldings for both state-of-the-art shopping malls and ageing Victorian buildings – so whether you need to restore your property to its former glory or give it a 21st century feel, Sui Generis can help!

But it's not just our turrets and cornicing that can help – you can transform your workplace with colourful, modern GRP desks and your outdoor areas with GRP seating.

Ask for a FREE quote today

Call 01206 798 798 now to arrange your free, no-obligation survey by one of our technical surveyors.

GRP fibreglass mouldings and bespoke moulded shapes for every need

GRP architectural mouldings

GRP architectural mouldings

GRP moulds can be formed into almost any shape – and can be finished to look just like traditional stone, concrete, ceramic or lead. This makes it an ideal hardwearing replacement for old structures – or a dazzling modern addition to new buildings.

About GRP architectural mouldings

GRP vehicle components

GRP vehicle components

From cab roofs for Luton transports and car spoilers to chemical tanks for tractors and sprayers – we can manufacture a variety of vehicle parts for standard or custom vehicles. Even the military gets in touch for our tough GRP components.

About GRP vehicle components

GRP tank, pit and hoist covers

GRP tank, pit and hoist covers

Stop corrosion in its tracks and ensure your tanks stay secure. Fibreglass roofs and covers aren't vulnerable to chemical attack and can be moulded to fit any tank. With additional bund covers, pit covers and hoist covers to choose from, we can provide the right GRP covers for your needs.

About GRP tank, pit and hoist covers

GRP moulded storage tanks

GRP storage tanks

For storage tanks that last, choose the most reliable material available: GRP fibreglass. We build storage tanks that can withstand corrosive chemicals, harsh weather conditions and will even remain safe during earthquakes – now that's the kind of strength we think all storage tanks should have.

About GRP storage tanks

GRP enclosures and housings

GRP enclosures and housings

If you have infrastructure that's exposed to the elements, we can help you ensure it stays protected with moulded enclosures and housings. From containerised plant rooms to ventilation shaft covers – make it last with cost-effective GRP fibreglass.

About enclosures and housings

GRP landscape and garden products

GRP landscape & garden products

Make your office exterior or campus more inviting for staff and customers. Moulded GRP furniture will bring individuality and warmth to your outdoor areas. From quirky, fun benches and chairs to play areas for children, we can build to the shape and style you want.

About landscape and garden mouldings

Unique and bespoke moulded products in GRP fibreglass

Bespoke GRP moulded products

We can create almost any shape, size and colour in a range of finishes. Your project can benefit from the protection, longevity, low maintenance costs and unique shape of GRP fibreglass...

About GRP moulded products

GRP battery storage boxes

GRP acid-resistant storage boxes

Sui Generis specialise in making custom GRP storage and equipment boxes to suit specific customer requirements.

View GRP Containers, GRP Battery Boxes, Storage and Equipment Boxes

5 good reasons to choose Sui Generis Fibreglass Mouldings...

  • Economy – cost-effective
  • Quality – weather and impact resistant
  • Design – made to bespoke designs
  • Longevity – indefinite lifespan
  • Service – 90% repeat custom rate

GRP fibreglass mouldings – a Sui Generis guide

Glass-reinforced plastic (GRP) is a versatile material that can be moulded into almost any shape. Because it's corrosion-resistant, impact-resistant and hard-wearing, it's the ideal material for a wide variety of applications – industrial, architectural and commercial.

The chemical resistance of fibreglass makes it great for manufacturing storage tanks and tank lids, while its hard-wearing nature makes it a long-lasting cover for pits and machinery.

Read more.

Its light weight and high strength make it handy for auto parts and it can be finished to resemble traditional materials like stone or ceramic for architectural purposes.

Increasingly, it is being used to create modern, colourful furniture both for offices and outdoor areas.

Sui Generis can mould almost any shape from standard or custom designs and give it the colour and finish you want.

What kinds of structure have you moulded in GRP?

We've moulded everything from a regular supply of cab roofs for Luton Transports to a bespoke architectural moulding for a Victorian building. These are just a few examples of the structures we can create from GRP moulds:

  • Replica chimneys, funnels, stone cornicing and turrets
  • Cab roofs, spoilers and cab fittings
  • Tank roofs and covers
  • Storage tanks
  • Enclosures, cabinets and standalone housing
  • Desks and fascias
  • Benches, chairs and garden planters.

Why use fibreglass mouldings?

Because they offer strength durability and resistance – which means they're safer, more secure and will last longer, saving you money over time.

When you order a fibreglass moulded storage tank or tank roof, it will be chemical-resistant, corrosion-resistant and weather-resistant – and can even be customised to suit its contents.

Likewise, the colour and vibrance of our moulded seating and furniture won't fade, crack or perish – making every piece a low-maintenance investment purchase you'll use for years.

With all these great benefits, no wonder more and more structures are being moulded out of GRP fibreglass.

Are there other benefits to moulded fibreglass?

There are many. These are just some of the properties of GRP moulds:

  • Corrosion Proof
  • Chemical resistant
  • Leak free
  • Impact resistant
  • Indefinite lifespan

Do your fibreglass mouldings conform to regulations?

Yes. All our fibreglass moulded products are manufactured to strict quality standards and use only high quality materials.

Because they need to be ready to house chemicals, oil and other liquids, our storage tanks comply with current Pollution Prevention Guidelines (PPG2) and SEPA (Scottish Environment Protection Agency) regulations.

For more details, take a look at the individual pages dedicated to our fibreglass products, or give us a call – we'll give you all the information you need.

Can you give me advice about fibreglass mouldings?

Of course. We'd be delighted to help you solve your problems with fibreglass moulding.

Just call us on 01206 798 798 today and we'll send one of our site inspectors to give you a free quote and all the information you need to get started.


  • "Sui Generis fabricated the seating beautifully...They provided us with an in-depth overview to the products on offer and case studies to show how it would work in situ. They understood what was needed and refined the seating to match our requirements. The fibreglass seating was delivered on promised production schedule and the colours were just as described with a perfect finish."

    R Peckham,
    Sui Generis fibreglass bespoke seating manufacture

    Read more testimonials
  • "Communication was good throughout the design and pre-installation stages."

    M Gaedke, Sui Generis GRP Wave Canopy

    Read more testimonials
  • "Your quotation, as always, is very competitive (but it's your professionalism and superb build quality that sells it to us!)"

    P Hawtin, Sui Generis bespoke Red Cabinet

    Read more testimonials
  • "On a personal note, I think suigeneris has some of the nicest and most polite staff I have ever dealt with in all my years of business.

    You have all been absolutely lovely and a credit to your organisation."

    D Moy, Sui Generis bespoke GRP Bund

    Read more testimonials


ISO 14001
Our accreditationsArmed Forces Silver Covenant


Sui Generis: The market leader in fibreglass mouldings

Sui Generis quality guaranteeQuality guarantee

Our highly competitive work gives you the best quality results every time – every one of our operatives is highly skilled, well trained and takes exceptional pride in what they do. With Sui Generis, you can rely on effective, long-lasting work.

About Sui Generis.

Sui Generis fully CompliantCompliance and accreditations

Entrust your project to Sui Generis, a company with sector wide recognition and approval for being compliant with industry standards. Accredited under schemes such as Link Up, Achilles and Constructionline your work is in more than capable hands.

ISO 9001:2008 and accreditations.

Sui Generis health and safety promiseOur health and safety promise

We take your safety seriously, and that of all our people, whether we're at a small factory or a nuclear plant. We always adhere to stringent health and safety procedures at every stage – and comply with your own Heath and Safety policies.

Health & Safety.

Customer satisfaction assuredSatisfaction Assured

Every job we undertake is completed with your satisfaction in mind. We work hard to be the best at every task we tackle – and that's why over 90% of our customers return to us time after time.

Customer Testimonials