Skip to content

This field is for validation purposes and should be left unchanged.

GRP and FRP Composite Solutions

Precision-engineered components, made to your specification

We design and manufacture high-quality GRP and FRP (Fibre Reinforced Polymer) components for customers across a wide range of sectors — including automotive, industrial, architectural, and furniture design.

Our work goes far beyond off-the-shelf mouldings. We deliver custom engineered GRP solutions built to your exact specifications — from custom-built storage tanks and enclosures to furniture and decorative façades. Whether you need a single component or a complete system, our in-house team of experts is here to support you from design through to final production.

engineering / innovation / sustainability

Innovation and Engineering at the Core

We combine engineering precision with advanced manufacturing techniques to produce both GRP and FRP products that meet the highest standards of performance, durability, and aesthetics. Every component is crafted using premium materials and modern tooling, with strict quality control built into every stage of the process.

Our team thrives on complexity — whether you’re creating a functional part for machinery, a stylised architectural feature, or a completely unique prototype, we’ll work closely with you to turn your vision into reality.

Built for a Broad Range of Applications

From tractor panels and plant housings to contemporary outdoor seating and cornices for heritage restoration, both GRP and FRP offers unrivalled versatility. Lightweight yet incredibly strong, our composite components are corrosion-resistant, easy to maintain, and built for longevity in even the harshest environments.

We’ve delivered solutions for:

  • Agricultural and construction vehicles
  • Storage and containment systems
  • Building façades and roofing elements
  • Internal and external furniture
  • Decorative architectural mouldings and heritage features
  • Marine, leisure and transport sectors

Designed for Sustainability and Performance

Sustainability is central to our approach. FRP components offer long service life, low maintenance, and high strength-to-weight ratios — reducing material usage and lifecycle costs. Wherever possible, we incorporate environmentally conscious manufacturing methods and source recyclable or low-emission materials. By choosing FRP, you benefit from a solution that’s not only engineered to perform but also built with the future in mind.

Our range of GRP composite solutions


Bespoke GRP Components
Bespoke GRP Components

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

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.

GRP Automotive Components
GRP Automotive 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.

GRP Tank, Pit and Hoist Covers
GRP Tank, Pit and Hoist Covers

Stop corrosion in its tracks and ensure your tanks stay secure. Composite 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.

GRP Storage Tanks
GRP Storage Tanks

For storage tanks that last, choose the most reliable materials available: GRP and FRP composites. We manufacture storage tanks engineered to withstand corrosive chemicals and extreme weather conditions — delivering the strength and reliability that should be standard in every storage solution

GRP Acid-resistant Storage Boxes
GRP Acid-resistant Storage Boxes

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

“Contractors adhered to site rules, and the work area was kept clean and tidy. Very happy with the standard of work and they were not afraid to ask if a problem arose. “

S Bagnall

“Working with Sui Generis has delivered a solution far beyond our expectations.”

D Turk

“It was a pleasant surprise to have such efficient and effective engineers.”

K Snow

“Would recommend unreservedly, difficult start to the project. The guys worked outside their remit to ensure the project was completed within the timescale. The guys should be commended, namely Jack, Bradley and Ben.”

S Runcie

“On site guys were fantastic. Safety focused and hard working. Kept me informed on progress throughout.”

J Hill

“Ben L showed care and consideration for all the work he undertook, giving excellent ideas to future repairs to kilns here.”

W Allen

GRP and FRP Composite Mouldings – A Sui Generis Guide

Fibre Reinforced Polymer (FRP) and Glass Reinforced Polymer (GRP) are highly versatile composite materials, valued for its corrosion resistance, impact strength, and long-term durability. Lightweight yet incredibly robust, it can be moulded into virtually any shape — making it the ideal choice for applications across industrial, architectural, commercial, and automotive sectors.

Its chemical resistance makes GRP and FRP the preferred material for manufacturing storage tanks, tank lids, and protective covers for pits and equipment. Its strength-to-weight ratio and design flexibility make it suitable for a wide range of applications, and it can even be finished to mimic traditional materials such as stone, metal, or ceramic — ideal for heritage and architectural restoration projects.

Increasingly, designers and developers are also turning to GRP for modern, low-maintenance furniture, both indoors and out, thanks to its weather resistance and creative finish options.

At Sui Generis, we can produce both standard and fully bespoke GRP and FRP mouldings, tailored to your exact design, size, colour, and finish requirements. Whether you’re looking for precision-engineered functionality or high-end aesthetics, we can help bring your vision to life — with composite solutions built to perform.