Our most commonly used mesh product. 38 x 38 mm (31 x 31 mm) aperture. Medium (general grade) grit surface.
Pultruded Grating
FRP (Fibre Reinforced Polymer), also commonly known as fibreglass, pultruded grating is designed for applications requiring longer spans, higher load capacity, and directional strength, where traditional moulded grating may not provide the required spanning capability. Well-suited to industrial walkways, elevated platforms, service corridors, trench covers, and access flooring in corrosive or coastal environments. Lightweight, low-maintenance, and simple to install, with excellent slip resistance and the corrosion protection FRP is known for.
Safety and Quality Above the Standard
What Sets us Apart
We are a New Zealand family-owned and operated company with a fully equipped workshop in the Bay of Plenty. We provide an in-house cutting service supported by advanced equipment and proven fabrication methods, and we can accommodate non-standard sizes and finishes when required. Our team is always ready with technical support and practical design guidance, and we maintain significant stock on-site to keep lead times short and projects moving.
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Production Oversight
Our products are produced exclusively through accredited manufacturing partners that operate under ISO 9001 quality systems. This gives us direct control over specifications, consistency, and traceability.
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Verified Testing and Compliance
Our products are independently tested and verified to recognised standards, supported by third-party laboratories and CPEng engineering where required, ensuring dependable performance.
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Environmental Responsibility
We are guided by ISO 14001:2015 environmental management principles to reduce waste, improve efficiencies, and minimise our operational impact.
Our Pultruded Grating range is manufactured using continuous fibreglass rovings combined with thermosetting resin systems to create high-strength structural load bars with excellent spanning performance.
Unlike moulded grating, which provides bi-directional strength, pultruded grating is designed with primary load bars running in a single direction. This allows significantly improved span capability and reduced deflection under load, making it well-suited to longer walkways, elevated platforms, and heavy-duty industrial access systems.
Typical Applications: Walkways • Elevated Platforms • Service Platforms • Trench Covers • Conveyor Access • Industrial Access Flooring • Marine Infrastructure • Water Treatment Facilities
Resin Systems
Our moulded panels use a hand lay-up open-mould process, ensuring complete fibre wet-out, uniform resin distribution and precise bar geometry.
Developed through more than a decade of refinement across resin chemistry, pigment stability, UV protection and manufacturing consistency, our resin platforms are engineered for long-term industrial performance in demanding environments.
- ISO-PLEX (Isophthalic Polyester Resin)
Developed for dependable all-round industrial performance, ISO-PLEX combines balanced resin chemistry, UV resistance and moisture protection into a versatile FRP system designed for reliable structural performance and long-term visual consistency across outdoor and industrial applications. - VIN-PLEX (Vinyl Ester Resin)
Our premium corrosion-resistant resin platform, VIN-PLEX is engineered for higher-exposure environments where chemical resistance, moisture protection and long-term durability are critical. Refined to deliver enhanced performance in marine, wastewater, and aggressive industrial applications.
We offer multiple pultruded load bar profiles to suit different applications and load requirements.
I-Bar Pultruded Grating
Designed for excellent drainage and airflow while maintaining strong spanning capability. Commonly used in industrial walkways and elevated platforms.
T-Bar Pultruded Grating
Provides a broader walking surface and improved comfort underfoot while retaining excellent load performance. Often selected where pedestrian traffic is frequent.
Heavy Duty Options
Heavy-duty pultruded systems are available for increased span requirements and higher point loading applications.
The surface profile determines how our grating grips, drains, and wears. Each texture is mould-formed for dimensional accuracy and long-term consistency.
Our Surface Systems
Developed through years of real-world industrial application and refinement, our surface systems are designed to balance slip resistance, wear life, drainage performance and long-term durability.
- Concave (V-Top)
The natural moulded surface profile. Designed to promote drainage while providing light underfoot texture without applied grit. - CARBIX Fine Grit
A refined anti-slip surface system using controlled grit grading and bonding technology to achieve a smoother underfoot finish while maintaining dependable slip resistance. Designed for pedestrian-focused and barefoot-friendly environments. - CARBIX Medium Grit
Our heavy-duty industrial anti-slip system, developed to maximise grit retention, wear life and long-term traction performance in demanding outdoor and industrial applications.
FIRE PERFORMANCE
- ISO 9239-1 / AS 9239.1 (Reaction to Fire for Flooring Materials) – Tested by NZWTA Laboratories (Reports 2018 & 2020).
Critical Radiant Flux (CRF): 10.9 kW/m² – Exceeds the 4.5 kW/m² requirement for NZ & Australia.
Smoke Value: ≈ 210 %.min – Very low smoke generation, excellent visibility retention.
Result: Fully compliant with NZ Building Code (C/VM2) and Australian NCC equivalence - ASTM E84 – Steiner Tunnel Test – SGS Report (Dec 2022).
Flame Spread Index (FSI): 20 • Smoke Developed Index (SDI): 400 Classification: Class A (≤ 25 FSI / ≤ 450 SDI) — highest U.S. rating.
DURABILITY & UV EXPOSURE
- ASTM G154 Accelerated UV Exposure – Samples exposed 2,500 hours (≈ 7–10 years real-world) showed no statistically significant strength loss
- Complies with NZ Building Code Clause B2 (Durability).
- Expected service life well beyond 15 years with routine maintenance.
MATERIAL SAFETY
- AS 4964 (Qualitative Identification of Asbestos) – Independent testing confirmed no asbestos detected in any FRP Limited product.
WATER ABSORPTION TESTING
Testing was carried out by SGS. in accordance with ASTM D570-22 on our moulded FRP products manufactured using ISO and VE resin systems.
TEST CONDITIONS:
Dried at 50 ± 2 °C for 24 h
Soaked in water at:
- 23 °C for 24 h
- 100 °C for 2 h
- 50 °C for 48 h
MEASURED WATER ABSORPTION (%):
| Condition | Sample A | Sample B | Assessment |
|---|---|---|---|
| 23°C / 24 h | 0.17% | 0.09% | Excellent resistance – negligible absorption |
| 100 °C / 2 h | 0.49% | 0.47% | High stability – minimal uptake under heat |
| 50 °C / 48 h | 0.52% | 0.71% | Strong retention – remains below 1% threshold |
INTERPRETATION:
Results demonstrate consistently low water absorption across all temperature and duration tests, confirming a dense, well-cured laminate structure.
Moisture uptake remained below 1%, supporting dimensional accuracy, mechanical reliability, and long-term surface integrity.
Performance levels are within the expected range for high-grade structural FRP composites and trend toward the lower end of typical absorption values, indicating slightly improved resistance compared with standard industry benchmarks.
LOW VOC PIGMENT
Our colour system utilises a polyester-based pigment dispersion that chemically bonds within the FRP matrix, rather than just coating it. This 100% solids, low-VOC formulation delivers cleaner processing, longer-lasting colour, and superior UV stability compared to solvent-borne alternatives. It’s a smarter, more sustainable way to colour FRP.
ELECTRICAL PROPERTIES – TESTING IN PROGRESS
- Arc Resistance (LW): ASTM D-495 – pending
- Dielectric Strength (LW): ASTM D-149 – pending
- Dielectric Strength (PW): ASTM D-149 – pending
SLIP RESISTANCE
- AS/NZS 4586 (Wet Pendulum Method) – Independently tested by ISTS (NATA Accredited).
- All surfaces classified V – Very Low Risk of Slip (BPN > 54).
- Complies with NZBC Clauses D1 (Access Routes) and F4 (Safety from Slipping).
ELECTRICAL INSULATION TESTING
Testing was carried out by SGS in accordance with ASTM D495-22 and ASTM D149-20 on our FRP moulded products manufactured using ISO and VE resin systems.
TEST CONDITIONS:
Dry Arc Resistance (ASTM D495-22)
- Arcing voltage: 12.5 kV • Electrode gap: 6.35 mm • Environment: 23 °C / 50 % RH
Dielectric Breakdown (ASTM D149-20)
- Transformer oil medium • Voltage rise: 3000 V/s • Frequency: 50 Hz
MEASURED ELECTRICAL PERFORMANCE:
| Property | Sample A (ISO resin) | Sample B (VE resin) | Assessment |
|---|---|---|---|
| Arc Resistance Time (s) | 182.5 s | 146.2 s | Excellent surface insulation – high resistance to tracking |
| Dielectric Strength (kV/mm) | 15.6 kV/mm | 12.5 kV/mm | Strong electrical barrier – stable under high voltage |
INTERPRETATION:
Results confirm both resin systems deliver high-grade electrical insulation consistent with the requirements of ASTM D495 and D149.
The ISO-resin laminate achieved the highest overall performance, showing extended arc-resistance duration and greater dielectric strength, indicating a dense, well-cross-linked matrix with minimal conductive pathways.
The VE-resin laminate also exhibited strong insulating capability, remaining well within the range expected for premium structural FRP composites.
Electrical performance across both systems supports their suitability for installations requiring high-voltage isolation, reduced surface tracking, and long-term reliability in wet or industrial environments.
Our workshop can provide:
- Cut-to-size panels
- Custom fabrication
- Stair tread manufacture
- Fixing clip supply
- Site-specific layout assistance
316 stainless steel fixing clips and installation hardware are available for multiple support configurations.
Available Colours
RAL 7015 Slate Grey
RAL 6010 Grass Green
RAL 1021 Colza Yellow
RAL 7035 Light Grey
The examples shown are of colours typically stocked; other colours are available upon request.
Why Choose FRP Ltd
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NZ Family-Owned and Operated
We understand what matters to you as a proudly NZ family-owned and operated business. We're dedicated to providing reliable, locally supported solutions that meet the needs of New Zealand industries.
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Expertise and Quality
We offer our customers premium products that adhere to industry standards, ensuring durability and reliability.
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Competitive Pricing
We deliver exceptional value by combining high-quality materials with cost-effective pricing, ensuring you receive the best products at a reasonable cost.
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Proven Track Record
We are proud to have built a reputation nationwide and across industries for delivering reliable product solutions that meet and exceed customer expectations.
Have a Question? Get Product Advice.
We're here to help! If you have any questions, need support with a product, or would like a copy of the standards we adhere to, please don't hesitate to contact us. We look forward to assisting you!
