GRP grating selector
Moulded vs pultruded GRP grating
Choose moulded GRP grating for many general industrial flooring routes, and pultruded GRP grating where span direction, load capacity or a more structural flooring arrangement drives the design.
The quick answer
Moulded GRP grating
Best for many platforms, walkways, trench covers and wet-access areas where load is distributed across a square mesh panel and drainage/corrosion resistance matter.
- Bi-directional panel behaviour
- Open mesh, mini mesh, micro mesh and solid-top routes
- Commonly stocked and cut to size
- Good for wastewater, marine, industrial and maintenance access
Pultruded GRP grating
Best where longer spans, directional strength, defined bearing bars or specialist access requirements need a more engineered flooring route.
- Strongest along the pultruded bar direction
- Useful for longer spans and higher stiffness requirements
- Often more project-specific
- Needs direction, support and fixing detail checked
Compare the buying decision
| Decision point | Moulded grating | Pultruded grating |
|---|---|---|
| Typical use | General platforms, walkways, trenches, wet routes and corrosion-resistant flooring. | Longer spans, directional loads, specialist platforms and structural flooring layouts. |
| Load behaviour | Generally more balanced in both panel directions. | Direction-sensitive; bearing bar direction is critical. |
| Drainage and mesh | Strong choice of mesh and surface formats. | Open-bar layout with support direction and bar spacing to define. |
| Buying route | Often start with stocked panels, depth, mesh and cut-to-size. | Start with span, load, deflection, support direction and project enquiry. |
| Risk if chosen wrongly | Wrong mesh, depth or support span can affect deflection and usability. | Wrong orientation or support layout can undermine capacity. |
What to send before ordering
For moulded grating
Panel size, depth, mesh type, support span, cut-outs, colour, surface, fixing type, resin/exposure and delivery timing.
For pultruded grating
Clear span, support width, load, deflection limit, bearing-bar direction, environment, fixing method and any drawing or specification.
Need help choosing?
Send a sketch, dimensions, load requirement and exposure. We will help route you to stocked panels, cut-to-size moulded grating or a pultruded enquiry.
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Choose GRP grating by load path and application
Moulded and pultruded grating can look similar at a glance, but their reinforcement and load behaviour are different. Selection should begin with span direction, load, deflection, support arrangement, opening requirement and environment.
Moulded grating
Reinforcement is distributed through a moulded grid, giving useful panel behaviour in both directions. It suits many platforms, walkways, trenches and wet or corrosive access routes.
Pultruded grating
Continuous fibres run predominantly along the bearing bars. This creates directional stiffness, so orientation, supports and load data are central to the design.
Surface and openings
Mesh, bar spacing, open area, grit, solid-top finish and pedestrian use can be as important as panel depth. Confirm drainage and dropped-object requirements.
Information to confirm
- Clear span and bearing direction
- Uniform, concentrated and moving loads
- Deflection or vibration limit
- Mesh opening, surface, resin and fixing method
Practical questions
Is pultruded grating always stronger?
No. Performance depends on the exact product, span direction, load case and deflection criterion. Compare verified data for the proposed configuration.
Can moulded panels be cut on site?
Often, but the finished panel still needs adequate support, bearing bars, edge condition and suitable fixings.