Shaping the Future of the Fibreglass Industry
Leading fibreglass specialists delivering high-quality, custom GRP solutions with expertise, precision, and trusted service.
Family Owned, Quality Focused
With over 70 years of experience in the industry, our philosophy is simple: “Excel in quality, deliver on time and remain competitively priced.”
Welcome To AJ Glassfibre
We are a family-run GRP manufacturing business founded in 1999. Built on decades of industry experience, honest values, and a strong work ethic, we now operate from two sites in Castleford. Our focus remains simple: delivering high-quality products, on time and at a competitive price.
Customer Driven
Striving for Improvement
Embracing Change
Projects
XBOX One Launch
Our team was commissioned to manufacture a large sectional moulded dome featuring the iconic Xbox branding.
Case Studies
F1 Rolex Sign
We were commissioned to manufacture a large, specialised sign for a client, to be used by Rolex to promote their luxury timepieces across the global Formula 1 season.
Case Studies
TBL600 Airport Fibreglass
Manufactured durable GRP tug components, ensuring rapid replacements, minimising downtime, supporting continuous airport operations worldwide.
What We Do
From concept to completion, we provide comprehensive services nationwide, including design, manufacture, installation, repairs, and ongoing support.
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Hand Lay Manufacture
Precision hand lay-up lamination delivering robust, custom fibreglass components with exceptional strength and finish.
Read MoreHand Lay Manufacture
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Spray Deposition
Efficient spray deposition for uniform fibreglass build-ups, rapid results, and high-quality surface performance.
Read MoreSpray Deposition
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Closed Mould (RTM)
Advanced closed mould RTM techniques producing lightweight, high-strength parts with superior consistency and detail.
Read MoreClosed Mould (RTM)
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Patterns and Moulds
Expert pattern and mould creation ensuring accurate, repeatable fibreglass production with lasting durability.
Read MorePatterns and Moulds
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Silicone & Vacuum Bagging
Vacuum and silicone bagging processes delivering precision lamination with minimal voids and maximum strength.
Read MoreSilicone & Vacuum Bagging
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GRP On-Site
Flexible on-site GRP services bringing professional installation, repairs, and solutions to your location.
Read MoreGRP On-Site
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GRP Repairs
Reliable in-house GRP repairs restoring performance, extending service life, and reducing downtime effectively.
Read MoreGRP Repairs
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Bespoke Fibreglass
Tailored bespoke services crafting custom fibreglass solutions to perfectly meet your unique project requirements.
Read MoreBespoke Fibreglass
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GRP Kiosks
Strong, weather-resistant GRP kiosks designed for long-term performance and dependable outdoor protection.
Read MoreGRP Kiosks
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GRP Tank Lids
Durable GRP tank lids engineered for secure sealing, corrosion resistance, and lasting reliability.
Read MoreGRP Tank Lids
