Anti-Slip GRP Grating — What Determines the Right Surface Texture?
Slip resistance is rarely an isolated specification — the requirement depends on the environment the grating will be used in. Here we cover the surface textures available and what determines the right choice.
Summary
- Slip resistance in GRP grating is normally achieved through an embedded grit surface rather than an applied coating that can wear away.
- Slip resistance requirements vary by environment — wet, oily, icy or dusty — and should be based on the actual operating environment, not a general level.
- A smooth (non-gritted) surface exists for applications where a gritted surface isn't suitable, but offers lower friction in wet conditions.
- Slip resistance performance can be tested and documented against recognised test methods, giving comparable, verifiable results.
- Choosing the right surface texture affects both safety and maintenance — a surface suited to the wrong environment can wear faster or provide inadequate grip.
Surface textures
| Surface texture | Description | Typical use |
|---|---|---|
| Standard gritted surface | Quartz particles embedded in the surface during manufacture | Walkways, platforms and stairs in most industrial environments |
| Fine grit/micro surface | Finer grain size for lower wear against footwear and materials | Environments requiring a gentler surface, for example certain food industry applications |
| Smooth (non-gritted) surface | No embedded quartz | Specialist applications where a gritted surface isn't suitable |
| Concave/ribbed surface | Shaped surface that increases friction in one direction | Ramps and inclined surfaces |
Why embedded slip resistance doesn't wear away
The quartz surface is embedded into the material during manufacture, unlike coatings that are painted or sprayed on and gradually wear away in high-traffic areas. This means the slip resistance on GRP grating normally retains its friction throughout the product's service life, without needing recurring surface treatment.
The environment determines the requirement
Which surface texture gives the best grip depends on the type of contamination present. Marine environments with salt water and algae require aggressive grip. Oily industrial floors call for different surface properties than plain water. Outdoor environments with a risk of ice formation need separate assessment. Comfort also plays a role — a very coarse surface can be uncomfortable in low-traffic indoor environments where friction requirements are lower.
How is slip resistance tested and documented?
Slip resistance performance can be tested and expressed as friction coefficients or slip resistance ratings under recognised test methods. Always ask for documented test data for the specific product and surface rather than relying on general slip-resistance claims.
Slip resistance on ramps and inclined surfaces
On ramps and inclined walkways, the direction of friction matters as much as the amount. Concave or ribbed surfaces are designed to give extra grip in the direction of travel, which is particularly relevant for accessible ramps and other inclined walkways.
Frequently asked questions
Does the slip-resistant surface wear away over time?
The quartz surface is embedded in the material during manufacture rather than applied as a coating, giving significantly better wear resistance than surface treatments that are painted or sprayed on.
Does the same surface work for both wet and oily environments?
Not necessarily. Which surface texture gives the best grip depends on the type of contamination — water, oil or ice — present in the specific environment. Contact us with your operating environment and we'll recommend the right surface.
Do I need a slip-resistant surface indoors too?
It depends on the activity. Environments with a risk of spills, moisture or dust should have a slip-resistant surface whether indoors or outdoors.
Can I get test data for a specific surface's friction performance?
Yes, we can provide documentation for most of our products — contact us with the product and application in question.
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