GRP Open Mesh Grating combines a moulded glass reinforced polyester construction with a resin-coated gritted surface, providing a durable flooring solution for demanding environments. It has been tested for slip resistance, fire performance, load performance and UV exposure, with specifications covering a wide range of operating conditions.

Product Specifications

• Material: GRP – Glass Reinforced Polyester with resin-coated gritted surface
  
• Thicknesses: 25mm, 38mm and 50mm
  
• Colours: Green, Grey and Yellow
  
• Cut to length: Yes
  
• Cut to size: Yes
  
• Cutting tolerance: ±5mm
  
• Standard and bespoke sizes: Available
  
• Fixings: Clips, bolts and clamps available separately
  
• Indoor use: Yes
  
• Outdoor use: Yes
  
• Dry areas: Yes
  
• Wet areas: Yes
  
• Oily and greasy areas: Yes
  
• Heavy-use areas: Yes
  
• Wheeled areas: Yes
  
• Wheelchair suitable: Yes, subject to the suitability of the overall installation
  
• Impact resistant: Yes
  
• Flame retardant: Yes
  
• Non-conductive: Yes, including high-voltage electrical applications
  
• UV resistant: Yes
  
• Anti-microbial: Yes
  
• Chemical resistant: Yes
  
• Slip Resistance

Slip resistance has been tested to BS 7976.2, with the following Pendulum Test Values (PTV):

• Dry: PTV 72 – Extremely Low slip potential
  
• Wet: PTV 68 – Extremely Low slip potential
  
• Oil: PTV 63 – Low slip potential

The product also has an excellent Level 3 slip-resistance rating.

Wear Resistance

GRP Open Mesh Grating has an excellent Level 3 wear-resistance rating, making it suitable for areas subject to heavy footfall and regular use.

Load Performance

Load performance has been tested to BS EN124 – Class A15.

The appropriate thickness, support arrangement and fixing method should still be considered for each installation, particularly where the grating will be subjected to concentrated or heavy loads.

Fire Performance

The grating has been tested to:

• EN 13501-1: Class B-s1, d0
  
• ASTM E84-2018: Class 1
  
• UV & Environmental Performance

UV weathering has been tested to ISO 4892-2 using Xenan Arc for 5,000 hours.

The grating is designed to operate across a temperature range of approximately -50°C to +110°C, making it suitable for a wide range of indoor and outdoor environments.

Sustainability & Material Compliance

GRP Open Mesh Grating complies with REACH and RoHS requirements, supporting its use in environments where material and chemical compliance is an important consideration.

Available Panel Sizes

GRP Open Mesh Grating is available in a range of standard panel dimensions, with 25mm and 38mm options available in panels ranging from approximately 996 × 996mm up to 3660 × 1220mm.

The 50mm range includes panels measuring approximately 3003 × 1020mm and 3665 × 1225mm.

Bespoke cutting is also available through our in-house cutting service, with a stated cutting tolerance of ±5mm.

For exact dimensions and weights, please refer to the individual product variants listed on this page.

Good to Know: Technical ratings describe specific test conditions and should be considered alongside the requirements of the complete installation. Factors such as support spacing, loading, fixing method and the surrounding environment can all affect how a grating system performs in practice.

From the Mats4U Team

If you are specifying GRP Open Mesh Grating for a larger project, the application, panel dimensions, thickness, support arrangement and expected loading are all useful information to have before ordering. If you're unsure which specification is appropriate, send us your requirements and we'll help you work through the options.

One of the main advantages of GRP Open Mesh Grating is its open construction. Rather than creating a continuous solid surface, the moulded mesh allows water, liquids and small debris to pass through the grating, helping to prevent them from collecting across the walking surface.

This is particularly useful in areas where rain, wash-down water or other liquids are regularly present. By allowing liquids to drain through the mesh, the grating can help maintain a more usable walking surface instead of allowing water to pool on top.

The open structure also permits air circulation beneath the grating. This can be beneficial on raised platforms, walkways and other installations where ventilation beneath the flooring is desirable.

Why Open Mesh Can Be an Advantage

The open construction can help with:

• Allowing rainwater to pass through
  
• Providing drainage in wet working areas
  
• Reducing surface water accumulation
  
• Allowing airflow beneath raised flooring
  
• Allowing small debris to pass through the mesh
  
• Maintaining visibility of the area beneath raised platforms
  
• Making the grating suitable for applications where solid flooring could restrict drainage

The result is a flooring solution that does more than provide a walking surface. The combination of open mesh and gritted surface addresses two different requirements: allowing liquids to pass through while providing traction for people walking across the grating.

Good to Know: Open mesh grating is not designed to replace a drainage system. Where significant quantities of water or other liquids are present, the supporting structure and drainage arrangement should still be designed to safely manage the flow beneath the grating.

Top Tip: Consider what is underneath the grating before installation. Anything passing through the mesh will reach the area below, so make sure the space beneath can safely accommodate water, debris or other material.

From the Mats4U Team

Open grating can make a big difference in wet environments, but drainage should always be considered as part of the complete installation. Think about where water will go after it passes through the grating, rather than simply assuming that the open mesh solves the drainage requirement on its own.

GRP Open Mesh Grating is designed for environments where flooring may regularly be exposed to water, oil, grease or other contaminants. Its resin-coated gritted surface provides a textured walking surface designed to give footwear a secure point of contact, even when conditions become more challenging.

The open mesh construction works alongside the gritted surface. Liquids can pass through the grating rather than remaining across a solid walking surface, while the exposed grit provides the traction needed underfoot.

The grating has been slip resistance tested to BS 7976.2, recording Pendulum Test Values (PTV) of:

• Dry: 72
  
• Wet: 68
  
• Oil: 63

These results correspond to 'Extremely Low' slip potential in dry and wet conditions and 'Low' slip potential in oily and greasy conditions.

Designed for Challenging Conditions

The combination of an open mesh structure and gritted surface makes the grating suitable for environments where conventional flooring may struggle with moisture or contamination, including:

• Wet working areas
  
• Outdoor platforms and walkways
  
• Areas subject to regular wash-down
  
• Locations where oil or grease may be present
  
• Industrial access routes
  
• Construction environments
  
• Marine and shipping applications
  
• Areas requiring a high-grip raised floor

The grating also has Excellent Level 3 wear resistance, making it suitable for heavy footfall and regular use.

Good to Know: Slip resistance testing provides a useful indication of material performance under controlled conditions, but real-world grip is also affected by footwear, contamination, cleaning, drainage and the condition of the complete installation.

From the Mats4U Team

If you're choosing grating for an area where oil, water or grease is regularly present, look at the complete environment rather than just the slip rating. Good drainage and regular cleaning are important parts of maintaining a safe walking surface.

GRP Open Mesh Grating is manufactured from glass reinforced polyester (GRP), combining glass fibres with a resin matrix to create a strong, durable and relatively lightweight material. It is designed to withstand demanding environments where flooring may be exposed to moisture, chemicals, impact and regular traffic.

Unlike conventional steel grating, GRP does not rust or corrode. It is also resistant to water, oil and chemicals, making it particularly useful in environments where exposure to corrosive substances could shorten the service life of other materials.

The material is also UV resistant and designed to withstand temperatures from -50°C to +110°C, supporting its use in both indoor and outdoor environments.

Performance Advantages of GRP

The GRP construction provides a combination of properties that can be difficult to achieve with traditional flooring materials:

• Resistant to rust and corrosion
  
• Resistant to water, oil and chemicals
  
• UV resistant
  
• Impact resistant
  
• Suitable for temperatures from -50°C to +110°C
  
• Excellent Level 3 wear resistance
  
• Suitable for heavy footfall
  
• Non-conductive for electrical and high-voltage applications
  
• Flame retardant
  
• Suitable for indoor and outdoor environments

GRP can therefore be particularly useful where a grating system needs to remain durable without the ongoing corrosion concerns associated with untreated metal.

Good to Know: Corrosion resistance applies to the GRP grating itself. The supporting structure, fixings and surrounding materials should still be selected and maintained appropriately for the environment in which the grating is installed.

From the Mats4U Team

If your project involves chemicals, coastal exposure, persistent moisture or other demanding conditions, consider the complete installation rather than just the flooring material. The grating may be highly resistant, but the fixings and supporting structure also need to be appropriate for the environment.

Traditional flooring and grating materials such as mild steel, stainless steel, aluminium and timber can all have a place in construction and access systems, but they are not always the most practical choice for every environment. GRP Open Mesh Grating offers an alternative where low weight, durability and ease of handling are important considerations.

The GRP construction provides a strong structural material without the weight associated with many traditional metal grating systems. This can make individual sections easier to handle during installation, particularly where access is restricted or materials need to be moved manually.

GRP also avoids some of the maintenance considerations associated with materials that can rust or corrode. Combined with its resistance to water and chemicals, this makes it a practical option for demanding environments where long-term durability is important.

Practical Advantages of GRP Grating

Choosing GRP can provide several installation and operational benefits:

• Lightweight construction for easier handling
  
• Durable material designed for demanding environments
  
• Resistant to rust and corrosion
  
• Resistant to water, oil and chemicals
  
• Reduced need to deal with corrosion-related deterioration
  
• Available in multiple thicknesses
  
• Standard sizes available for different projects
  
• Bespoke cutting available
  
• Limited tooling required for installation
  
• Suitable for indoor and outdoor environments

The grating is available in 25mm, 38mm and 50mm thicknesses, allowing the product configuration to be matched more closely to the requirements of the installation.

Good to Know: Lightweight does not mean unsuitable for demanding applications. GRP grating is designed for heavy-duty use, but the appropriate thickness, support arrangement and fixing method must always be selected according to the specific installation.

Top Tip: When comparing GRP with metal grating, don't only compare the material price. Consider handling, cutting, installation requirements and long-term exposure to the environment as part of the overall project.

From the Mats4U Team

GRP can be particularly useful where you need a durable grating system but want to keep installation and handling as straightforward as possible. If you're replacing an existing material, compare the complete installation requirements rather than simply choosing a replacement based on dimensions.

GRP Open Mesh Grating is available in 25mm, 38mm and 50mm thicknesses, with a range of standard panel sizes and bespoke cutting available. Selecting the right configuration depends on the intended use, available space and the requirements of the supporting structure.

The different thicknesses provide flexibility when specifying GRP grating for flooring, walkways, platforms, ramps and other access areas. The 25mm grating is available in a particularly broad range of standard panel dimensions, while 38mm and 50mm options are available for projects requiring those specific profiles.

Standard panels include sizes ranging from approximately 996 × 996mm through to panels over 3m long, with larger options available depending on the thickness selected. The 50mm range includes panels approximately 3m and 3.66m long.

What to Consider When Choosing Your Grating

Before ordering, consider:

• Thickness: Choose from 25mm, 38mm or 50mm according to the installation requirements.
  
• Panel dimensions: Select a standard size where possible to simplify installation.
  
• Available space: Measure the area carefully before deciding how panels will be positioned.
  
• Support arrangement: Consider how the grating will be supported and fixed.
  
• Traffic: Take account of pedestrian and wheeled traffic expected across the surface.
  
• Environment: Consider exposure to water, oil, chemicals, weather and other contaminants.
  
• Bespoke sizing: Use the cutting service where standard panel dimensions do not provide the required fit.

Our in-house cutting service allows GRP Open Mesh Grating to be supplied to bespoke dimensions, with a stated cutting tolerance of ±5mm.

Good to Know: Grating thickness should not be selected based on thickness alone. The required configuration depends on factors such as support spacing, expected loading, traffic and the way the panels will be installed.

Top Tip: Draw out the area you're covering and mark the supporting points before ordering. This can help you work out how the standard panels will fit and where bespoke cuts may be useful.

From the Mats4U Team

If you're unsure which thickness or panel configuration is appropriate, having the overall area, support arrangement and intended use available will make it much easier to establish the right specification for your project.

GRP Open Mesh Grating is designed to be practical to install, with limited tooling requirements compared with many traditional grating systems. Its relatively lightweight construction can also make panels easier to handle and position during installation.

The grating can be cut to bespoke dimensions using our in-house cutting service, helping to reduce the need for extensive on-site modification. Where standard panel sizes are suitable, this can make planning and installation more straightforward.

A range of fixing clips, bolts and clamps is available separately to suit different installation requirements. The appropriate fixing arrangement will depend on the supporting structure, panel layout and conditions in which the grating will be used.

Planning the Installation

Before installing GRP Open Mesh Grating:

• Check the supporting structure is suitable and in good condition.
  
• Measure the installation area and confirm the required panel dimensions.
  
• Plan the panel layout to minimise unnecessary joints and offcuts.
  
• Choose an appropriate fixing system for the structure and application.
  
• Check cut edges and panel positioning before securing the grating.
  
• Inspect the completed installation to ensure panels are secure and correctly supported.

Bespoke cutting can be particularly useful for awkward areas, helping panels to fit more accurately and reducing the amount of cutting required on site.

Good to Know: Fixing clips, bolts and clamps are available separately, but the correct fixing arrangement should be determined by the installation rather than simply selecting a fixing based on the grating thickness.

Top Tip: Plan where your panel joints will fall before cutting. A well-planned layout can make installation easier and produce a cleaner finished result.

From the Mats4U Team

If you're working on a larger project, send us the dimensions and layout of the area where possible. Knowing how the grating will be supported and used is important when working out the most practical panel configuration and fixing approach.

GRP Open Mesh Grating is designed to withstand demanding environments where flooring is exposed to regular foot traffic, wheeled equipment and general day-to-day wear. Its glass reinforced polyester construction provides a durable foundation, while the moulded grating design helps create a hard-wearing surface for areas that experience frequent use.

The grating has an excellent Level 3 wear resistance rating, making it suitable for areas subject to heavy footfall. It is also suitable for wheeled areas, providing a practical flooring solution where people, trolleys, carts or other wheeled equipment regularly move across the surface.

The open mesh construction also helps prevent water and debris from remaining on the walking surface. This can be particularly useful in busy areas where maintaining a clear and usable floor is important.

Built for Regular Use

GRP Open Mesh Grating is suitable for environments where flooring needs to cope with repeated use rather than occasional access. It can be used for:

• Heavy pedestrian footfall
  
• Regular wheeled traffic
  
• Access routes and walkways
  
• Raised flooring and platforms
  
• Ramps and access areas
  
• Industrial and construction environments
  
• Areas exposed to moisture, oils or other contaminants

The grating is also impact resistant, helping it cope with the knocks and general wear associated with demanding working environments.

Consider Support and Loading

Although GRP Open Mesh Grating is designed for demanding use, the correct panel thickness and supporting structure are important when the installation will carry significant loads or regular wheeled traffic.

The available 25mm, 38mm and 50mm thicknesses provide different options depending on the installation. Panel dimensions, support spacing, expected traffic and the type of load should all be considered when selecting the appropriate configuration.

The product has also been tested to BS EN124 Class A15 for load performance. This provides useful technical information when assessing the grating for a particular installation, but the complete supporting structure and installation method must also be suitable for the intended loading.

Good to Know: Heavy footfall and wheeled traffic are not the same as concentrated loads. A trolley or pedestrian may distribute its weight differently from machinery, equipment or a point load. For demanding installations, consider how the load will be applied to the grating rather than looking at weight alone.

Top Tip: If wheeled traffic is expected, consider the wheel type, frequency of use and direction of travel as well as the overall weight. These details can help when determining the most appropriate panel thickness and support arrangement.

From the Mats4U Team

For larger or more demanding projects, we'd recommend providing us with the area dimensions, support spacing, expected traffic and intended use before ordering. This gives us a much clearer picture of the installation and helps you select the right GRP Open Mesh Grating for the job.

GRP Open Mesh Grating is designed to be straightforward to maintain, making it suitable for environments where flooring needs to remain clean and usable without complicated cleaning procedures.

The open mesh construction allows water, dirt and loose debris to pass through the grating rather than remaining across a solid surface. This can make everyday cleaning easier, particularly in areas where dust, mud or other debris is regularly brought onto the floor.

For routine cleaning, a stiff brush will normally be sufficient to remove loose dirt and debris. Where more thorough cleaning is required, the grating can be washed with warm water and a mild detergent.

A pressure washer can also be used for more stubborn contamination, but a low-pressure setting is recommended to avoid unnecessarily aggressive cleaning of the surface or surrounding installation.

Recommended Cleaning Method

For general maintenance:

1. Remove loose dirt and debris using a stiff brush.
   
2. Wash the surface with warm water and a mild detergent where required.
   
3. Use a low-pressure pressure washer for more stubborn contamination.
   
4. Allow the area to drain and dry naturally.
   
5. Inspect the grating periodically for damage or any issues with the supporting structure and fixings.

Because GRP does not rust or corrode like conventional steel grating, it can be particularly practical in environments where regular exposure to moisture or corrosive substances would otherwise increase maintenance requirements.

Good to Know: The open mesh design helps with drainage, but debris can still accumulate in the openings depending on the environment. Regular brushing is therefore useful in areas where dirt, leaves, dust or other loose material is likely to build up.

Top Tip: For installations in oily, industrial or heavily contaminated environments, establish a regular cleaning routine rather than waiting until contamination becomes difficult to remove. Keeping the grating clear helps maintain the intended surface condition and drainage performance.

From the Mats4U Team

Think about what will naturally fall through the grating as well as what remains on top. On raised platforms and walkways, occasionally checking the area underneath can help identify accumulated debris and keep the overall installation working as intended.

What is GRP Open Mesh Grating?

GRP Open Mesh Grating is a moulded flooring system made from glass reinforced polyester (GRP) with a resin-coated gritted surface. Its open mesh construction allows water and debris to pass through while providing a durable, anti-slip walking surface.

What is GRP Open Mesh Grating used for?

It can be used for flooring, walkways, platforms, ramps and access areas where drainage, slip resistance and durability are important. It is suitable for a range of industrial, construction, chemical, shipping and offshore environments.

Is GRP Open Mesh Grating suitable for outdoor use?

Yes. The grating is suitable for both indoor and outdoor environments and is UV resistant. It is also resistant to rust and corrosion, making it suitable for exposed areas where conventional metal grating may require more maintenance.

Is GRP Open Mesh Grating suitable for wet areas?

Yes. The open mesh allows water to drain through the grating, while the resin-coated gritted surface provides high levels of slip resistance in wet conditions.

Can GRP Open Mesh Grating be used in oily areas?

Yes. It is suitable for oily and greasy environments and has been tested for slip resistance under oily conditions. The gritted surface is designed to provide traction even where contamination is present.

What thicknesses is GRP Open Mesh Grating available in?

It is available in 25mm, 38mm and 50mm thicknesses. The appropriate thickness depends on factors such as panel dimensions, support spacing, expected loading and how the grating will be used.

Can GRP Open Mesh Grating be cut to size?

Yes. Our in-house cutting service allows the grating to be supplied to bespoke dimensions. A cutting tolerance of ±5mm applies.

What colours are available?

The standard product range supplied on this page is available in Green, Grey and Yellow.

Is GRP Open Mesh Grating suitable for wheeled traffic?

Yes. The product is suitable for wheeled areas as well as heavy footfall. However, where substantial or concentrated loads are expected, the panel thickness, support arrangement and fixing method should be considered carefully.

Is GRP Open Mesh Grating wheelchair friendly?

The grating is classified as suitable for wheelchair use due to its low-profile design. However, the complete installation should also be assessed to ensure that panel joints, transitions, support arrangements and surrounding surfaces are suitable for wheelchair access.

Does GRP Open Mesh Grating rust?

No. GRP does not rust in the same way as ferrous metal. It is also resistant to corrosion, making it suitable for environments where moisture, chemicals or other corrosive conditions are present.

Is GRP Open Mesh Grating electrically conductive?

No. GRP is non-conductive, including for high-voltage electrical applications. Appropriate site-specific electrical safety requirements should still be followed.

How do you clean GRP Open Mesh Grating?

For everyday cleaning, use a stiff brush to remove dirt and debris. For more stubborn contamination, use warm water with a mild detergent. A pressure washer can also be used on a low-pressure setting.

Can GRP Open Mesh Grating be installed without specialist tools?

The product is designed with relatively straightforward installation in mind and requires limited tooling compared with many traditional grating systems. Cutting and fixing requirements will depend on the individual installation.

Are fixings supplied with the grating?

Fixing clips, bolts and clamps are available separately. The appropriate fixing system depends on the supporting structure and installation requirements.

What load can GRP Open Mesh Grating support?

The grating has been tested to BS EN124 Class A15 for load performance. The actual suitability of a particular panel depends on factors including its thickness, dimensions, support spacing, fixing arrangement and the type of load being applied.

Can I order bespoke GRP Open Mesh Grating?

Yes. Alongside the standard panel sizes, our in-house cutting service allows us to supply bespoke dimensions. If you have an unusual area or larger project, providing the required dimensions and intended use can help us determine the most suitable option.