25mm Thick Open Mesh Grating
Our 25mm GRP open mesh grating panels provide a lightweight, corrosion-resistant alternative to steel grating. Designed for walkways, platforms, inspection areas and service routes, they combine high slip resistance, excellent electrical insulation and long-term durability in demanding environments.
The 25mm thickness makes these panels ideal where reduced weight and ease of handling are important, while still delivering dependable performance in industrial, marine and public access applications.
- Voltage breakdown 18K volts/mm ASTM D149
- Density kg/m3 (Specific Gravity) 2100 ISO 9001
- Thermal Expansion Factor 13 x 10-6 mm/mm ISO 9001
- Water Absorption rate 0.45 x 24 hrs ASTM D570
- Operating Temperature -100 DEG C to +200 DEGC ISO 9001 Flammability resistance Class 2
- Frost resistance No Effect DD CEN/TS 772-22:2006 Weatherability Pass MOAT 22
- Anti-Slip Surface 1.04 CoF (Enhanced slip resistance) BS 4592-0
Technical Specifications – 25mm GRP Mesh Grating
| Specification | Value | Standard |
|---|---|---|
| Voltage breakdown | 18 kV/mm | ASTM D149 |
| Density (Specific Gravity) | 2100 kg/m³ | ISO 9001 |
| Thermal Expansion Factor | 13 × 10⁻⁶ mm/mm | ISO 9001 |
| Water Absorption | 0.45% (24 hrs) | ASTM D570 |
| Operating Temperature | –100 °C to +200 °C | ISO 9001 |
| Flammability Resistance | Class 2 | – |
| Frost Resistance | No Effect | DD CEN/TS 772-22:2006 |
| Weatherability | Pass | MOAT 22 |
| Slip Resistance (CoF) | 1.04 | BS 4592-0 |
Panel Sizes
25mm open mesh panels are available in 2m x 1m, 2m x 1.22m, 3m x 1m and 3.6m x 1.2m sheets, and we can cut them to suit your layout. Not sure whether 25mm is enough? See our guide to 25mm vs 38mm vs 50mm GRP grating.
Load Table – 25mm GRP Mesh Grating (38 x 38mm mesh)
| Clear span (mm) | Deflection (mm) under uniform load | Max. load kg/m² (kN/m²) | ||||||
|---|---|---|---|---|---|---|---|---|
| 250 kg/m² 2.5 kN/m² | 300 kg/m² 2.9 kN/m² | 500 kg/m² 4.9 kN/m² | 1,000 kg/m² 9.8 kN/m² | 2,500 kg/m² 24.5 kN/m² | 5,000 kg/m² 49.0 kN/m² | 10,000 kg/m² 98.1 kN/m² | ||
| 300 | < 0.20 | < 0.20 | < 0.20 | 0.25 | 1.02 | 2.03 | 4.06 | 7,710 (75.6) |
| 400 | 0.25 | 0.25 | 0.25 | 0.51 | 1.27 | 2.79 | – | 4,850 (47.6) |
| 500 | 0.85 | 1.02 | 1.7 | 3.47 | – | – | – | 4,380 (42.9) |
| 600 | 1.52 | 2.03 | 3.05 | 6.35 | – | – | – | 1,900 (18.7) |
| 700 | 2.88 | 3.72 | 5.59 | 8.55 | – | – | – | 1,450 (14.2) |
| 800 | 4.28 | 5.5 | – | – | – | – | – | 1,160 (11.3) |
| 900 | 7.87 | 10.16 | – | – | – | – | – | 900 (8.8) |
| 1,000 | 12.45 | – | – | – | – | – | – | 710 (6.9) |
Figures are indicative, for a uniformly distributed load. A dash (–) means the load is not recommended at that span. Always confirm spans, loading and support details with us for your project.
Not sure 25mm will take your load? Send us the span and how the area will be used, and we’ll confirm the right panel before you order.
Other GRP Grating Options
Panel Sizes & Thickness
Compare 25, 38, 41 and 50mm panels, mesh sizes and standard sheet sizes.
25mm GRP Grating FAQs
It is a 25mm thick glass-reinforced plastic (GRP) open mesh panel designed as a lightweight, corrosion-resistant alternative to traditional steel grating.
Common applications include access walkways, platforms, plant surrounds, marine installations, water treatment sites and public access routes where slip resistance and corrosion resistance are critical.
The gritted surface achieves an enhanced slip resistance with a coefficient of friction (CoF) of 1.04, tested to BS 4592-0.
Yes. The panels offer frost resistance with no effect recorded under DD CEN/TS 772-22:2006 and have passed weatherability testing to MOAT 22.
Yes. With a voltage breakdown of 18 kV/mm (ASTM D149), GRP provides excellent electrical insulation compared with metal grating.
The 25mm GRP grating is suitable for operating temperatures from −100 °C to +200 °C, making it suitable for a wide range of industrial environments.
Yes. Yes. The load table on this page shows deflection by span, and you can view all our GRP grating load tables or download them as a PDF. We can also confirm spans and loading for your specific project.
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