GRP Access Staircases
Pultruded GRP access stair systems for industrial and infrastructure environments
Engineered GRP staircases designed to provide safe, durable access where corrosion resistance, electrical safety and low maintenance are critical.
What Are GRP Access Staircases?
GRP Access Staircases are engineered composite stair systems designed to provide safe, permanent access between levels within industrial, commercial and infrastructure environments. Manufactured using pultruded glass-reinforced plastic components, they form part of a wider GRP access solution alongside platforms, walkways and handrail systems.
Unlike steel staircases, GRP access stairs are specifically suited to corrosive, high-humidity and electrically sensitive environments where long-term durability and low maintenance are essential. Their modular construction allows stair systems to be configured to suit site layouts, access heights and operational requirements while maintaining consistent structural performance.
Why Choose GRP Stairs?
Our GRP stair systems offer unmatched safety and performance while reducing lifetime maintenance and installation costs.
- 50% lighter than steel – reduced transport, lifting and installation costs
- Electrically non-conductive – safe for use around electrical installations
- Chemical-resistant – ideal for industrial, wastewater and corrosive environments
- Low thermal conductivity – performs reliably in hot, humid or arctic conditions
- Low maintenance – no painting, corrosion treatment or protective coatings required
- Radar transparent – suitable for specialist applications such as airport environments
Staircase Types & Configurations
PJNC GRP Access Staircases are available in a range of configurations to suit site layouts, access heights and operational requirements. Systems can be supplied as modular assemblies or designed as bespoke solutions to integrate with existing or new GRP access infrastructure.
Straight Flight Staircases
Single-run GRP staircases designed for direct access between levels. Commonly used where space allows for a straightforward ascent with consistent rise and going.
Multi-Flight & Switchback Staircases
Configured with intermediate landings to accommodate greater height changes or restricted footprints. Suitable for plant rooms, treatment works and industrial facilities with limited space.
Spiral & Compact Access Staircases
Space-efficient stair systems designed for confined or restricted areas where conventional stair layouts are not practical. Often specified for secondary or maintenance access.
Integrated Platform & Stair Systems
GRP staircases designed as part of a complete access solution, incorporating platforms, walkways and handrail systems for seamless integration across the site.
Safety, Durability & Performance
GRP Access Staircases are engineered to provide safe, stable access in demanding industrial and infrastructure environments. Designed for continuous use, they maintain structural integrity and slip resistance under exposure to moisture, chemicals and temperature variation.
GRP stair treads are manufactured with anti-slip surfaces to support safe footing in wet or contaminated conditions, while the non-conductive nature of the material reduces risk in electrically sensitive areas. Structural components retain strength and dimensional stability over time, without corrosion, coating failure or degradation commonly associated with steel systems.
With no requirement for painting or corrosion protection, GRP stair systems deliver reliable long-term performance with minimal maintenance, supporting safer access and reduced lifecycle costs across the installation.
Standards & Compliance
All PJNC GRP Access Staircases are engineered, manufactured and installed in accordance with recognised British and European standards to ensure long-term structural integrity, user safety and regulatory compliance.
Each staircase system is designed to meet the specific loading, access and safety requirements of the application, with full consideration given to environmental exposure and operational conditions.
Relevant standards include:
- BS EN 1991-1-1 – Actions on structures (imposed loads)
- EN ISO 14122 (Parts 1, 2 & 3) – Permanent means of access to machinery
- BS 4592 – Industrial flooring, stair treads and walkways
- EEMUA guidance where applicable
- Project-specific Water Authority or industrial specifications
All components are manufactured using corrosion-resistant GRP materials and stainless steel fixings, ensuring consistent performance in industrial, utility and infrastructure environments where safety, durability and compliance are critical.
GRP Access Staircase Installations
Below are examples of PJNC-designed and installed GRP access staircase systems used within industrial and wastewater treatment facilities.
Why Work With PJNC Ltd?
With over 30 years of experience in GRP product engineering, PJNC deliver access staircase systems that meet the highest standards of quality, safety and compliance. We offer:
✔ Complete design, manufacture & installation services
✔ Custom-built stair solutions tailored to your site
✔ Proven projects across the UK, Europe & Middle East
✔ Compliance with international safety specifications
Contact Us for GRP Staircase Solutions
Looking for GRP stairs or fibreglass access staircases tailored to your project?
Contact PJNC LIMITED today for expert advice and a bespoke quotation.
Frequently Asked Questions
They’re made from Glass Reinforced Plastic (fibreglass) — a composite material that offers high strength, low weight, and excellent corrosion resistance.
Yes. GRP stairs are engineered to the same load-bearing standards as steel but weigh about 50% less, reducing installation time and cost.
Absolutely. GRP is UV-stable, corrosion-resistant, and ideal for outdoor, marine, and coastal applications.
Yes — all PJNC LIMITED GRP staircases meet BS EN 1991, EN ISO 14122, BS 4592, and EEMUA specifications.
Yes. We specialise in bespoke modular GRP stair systems built to your exact project specifications.