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GridEX® FRP Heavy Duty Grating – The Safe Alternative to Metal Grating for Heavy Industry.
Introducing GridEX® HD, Treadwell’s new generation of heavy-duty FRP grating, engineered with our premium EX-Series® resin system. GridEX® HD is designed to offer a robust and safe alternative to traditional metallic grating, specifically delivering compliant structural performance, excellent corrosion resistance, and long-term service life.
Compliant. High Strength. Superior Performance. Low Maintenance.
This advanced grating system has been carefully developed to meet the stringent requirements of AS 1657, particularly for industrial walkways, platforms, and access systems. GridEX® HD delivers high strength-to-weight ratios, low maintenance requirements, and superior resistance to chemicals, moisture, and UV exposure. Its non-conductive properties and grit-top surface also enhance safety for personnel in high-risk environments such as mining, wastewater, and processing facilities.
With a sleek profile, long span capacity, and lightweight installation benefits, GridEX® HD represents the future of engineered grating solutions — combining cutting-edge composite materials technology with the proven reliability Treadwell is known for.
Downsides of Metal Grating
- Easily rusts & corrodes.
- Requires constant maintenance.
- Bends on impact.
- Slippery when wet.
Benefits of FRP Grating
- Rust & corrosion resistant.
- Virtually maintenance free.
- Extremely durable under impact (does not yield).
- Integrated anti-slip surface.
Why Choose GridEX® Heavy Duty Grating
Treadwell has established itself as a trusted leader in Fibreglass Reinforced Plastic (FRP) solutions. Driven by a strong commitment to quality and innovation, Treadwell delivers expert guidance and tailored products and solutions across a diverse range of applications.
SAFETY
Eliminates risk of trip hazards. Impregnated anti-slip surface for user safety.
WEATHER PROOF
Built to withstand extreme weather conditions.
CORROSION RESISTANT
Naturally corrosion resistant, outlasting traditional materials. Reducing maintenance, replacement and downtime costs.
NON-CONDUCTIVE
Removes need for earthing and bonding.
NO HOT WORKS
Cutting / grinding on site do not require hot works permits.
NO DISSIMILAR METALS
Can be used with glavanised, mild, stainless steel and other metallic structures.
SAFETY
Eliminates risk of trip hazards. Impregnated anti-slip surface for user safety.
WEATHER PROOF
Built to withstand extreme weather conditions.
CORROSION RESISTANT
Naturally corrosion resistant, outlasting traditional materials. Reducing maintenance, replacement and downtime costs.
NON-CONDUCTIVE
Removes need for earthing and bonding.
NO HOT WORKS
Cutting / grinding on site do not require hot works permits.
NO DISSIMILAR METALS
Can be used with glavanised, mild, stainless steel and other metallic structures.
COMPLIANT WITH AS4586 (SLIP RESISTANCE) AND AS1657 (WALKWAYS & PLATFORMS)
GridEX® Heavy Duty FRP Grating - GDX322511IB
Load Performance Summary (AS 1657 Compliant)
Deflection Performance
| Span (mm) | Deflection (mm) 2.5kPa | Deflection (mm) 4kPa | Deflection (mm) 5kPa |
|---|---|---|---|
| 1000 | 0.1 | 0.8 | 1.3 |
| 1200 | 0.5 | 2.6 | 3.1 |
| 1400 | 2.2 | 4.5 | 6.1 |
| 1500 | 3.5 | 6.64 | 8.3 |
| 1700 | 6.5 | 10.07 | 12.6 |
Note: Test results consider V-Series® resin.
Contact Now To Schedule Personalised Consultation
Specially designed and engineered for heavy industry applications, GridEX® FRP Heavy Duty Grating provides reliable structural performance and extended span capacity while remaining compliant with industry standards. GridEX® HD is ideal for industrial walkways, platforms and access systems, meeting compliance codes and delivers structural longevity.
N-CLIP ASSEMBLY
N-CLIP NUT WASHER ASSEMBLY
| Criteria | GridEX® HD (FRP) | Serrated Steel Grating (32mm) |
|---|---|---|
| Material Type | Vinyl Ester Fiberglass Reinforced Plastic (FRP) | Mild Steel (Hot-Dip Galvanised) |
| Span Capacity @ 4kPa | 1700mm max span (10.07mm deflection) | 1600–1700mm |
| Max Span at 5mm Deflection 5kPa | At 1320mm spans | Approx. 1500mm–1600mm |
| Weight per m² | ~27 kg/m² | ~45–50 kg/m² incl. light gauge mesh & edge banding |
| Corrosion Resistance | Excellent – does not rust | Moderate – needs galvanising & maintenance |
| Slip Resistance | Grit surface (P5, R13 rating) | Serrated bar |
| Electrical Conductivity | Non-conductive | Conductive |
| Maintenance | Minimal – no painting or welding | High – prone to rust, coating/welding required |
| Design Life | 50+ years | 10–25 years (coating-dependent) |
| Fire Rating | Low flame spread | Good |
| Environmental Impact | Low embodied energy, no toxic coatings | Higher embodied energy and maintenance pollution |
Clip and Securing Details
Ideal Clip set for a walkway will be a N Clip with a H Clip with a M5 Bolt.
Ideal Clip set for a Stair tread will be a N Clip with a M5 Bolt connecting directly to the stair framing
Environmental Impact & Longevity
Lower Carbon Footprint: GridEX® HD requires significantly less energy to manufacture, and transport compared to steel.
Sustainable Durability: With a design life of over 50 years, GridEX® HD reduces the frequency of replacement and material waste.
No Paints or Solvents: Eliminates the need for toxic coatings and maintenance chemicals that can leach into the environment.
| Application | Industry |
|---|---|
| Access Platforms & Walkways | Mining and Processing Facilities |
| Maintenance Pits | Food and Beverage |
| Rooftop Access | Rail Industry |
| Electrical Rooms | Chemical Plants |
| Water & Wastewater Treatment Plants | Oil and Gas |