--- title: "Know Your GRP Applications: Open Grating, Grating Cover, and GRP Plate" description: Discover the strengths and applications of the GRP gratings and covered grating for industrial uses, ensuring durability, safety, and cost-effectiveness. image: https://blog.fibergrate.com/hubfs/Covered%20Grating/Fiberplate%20ISOFR%20Dynaform%20Structural%20Shapes%20-%20Dark%20Gray%20-%20Billings%20Bridge%20Station.jpeg --- [![Fibergrate](https://blog.fibergrate.com/hubfs/fibergrate-theme-2024/images/blog/fibergrate-homepage-logo-30x20.svg)](https://fibergrate.uk/) - E-mail: [uk.info@fibergrate.com](mailto:uk.info@fibergrate.com) - Phone Number: +44 (0) 191 4021920 - [![blogicon](https://blog.fibergrate.com/hs-fs/hubfs/fibergrate-theme-2024/images/blog/blogicon.png?width=20&height=18&name=blogicon.png) VISIT OUR BLOG](https://blog.fibergrate.com/en-gb/blog) - [![phoneicon](https://blog.fibergrate.com/hs-fs/hubfs/fibergrate-theme-2024/images/blog/phoneicon.png?width=14&height=18&name=phoneicon.png) CONTACT US](https://fibergrate.uk/contact-us/) - 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[FAQ](https://fibergrate.uk/resource-centre/faq/) - [Glossary](https://fibergrate.uk/resource-centre/glossary/) - [Design Resources](https://fibergrate.uk/resource-centre/design-resources/) - [Stamp of Authenticity](https://fibergrate.uk/stamp-of-authenticity/) - [About Us](https://fibergrate.uk/about-us/) ![](https://blog.fibergrate.com/hubfs/fibergrate-theme-2024/images/blog/searchgrey.png) [Fibergrate Marketing UK](https://blog.fibergrate.com/en-gb/blog/author/swati-rathore) on Jun 27, 2025 # Know Your GRP Applications: Open Grating, Grating Cover, and GRP Plate GRP grating (with or without a grating cover) and GRP plate are versatile and widely used materials for industrial applications. Covered grating is a strong platform, while open grating offers strength while also allowing for drainage and ventilation. Glass Reinforced Plastic (GRP) plate is a durable and weather resistant covering for areas that need to be resistant to corrosion.  Choosing the right type of GRP product helps you with successful design and deployment in the field. Understanding the functional strengths and weaknesses of covered grating vs. open grating ensures you get the most out of your investment. This guide will explore the advantages and disadvantages of both types of grating, along with real-world scenarios to help you make the appropriate choice. ## Understanding GRP Plates vs. Grating Covers [Covered grating](https://www.fibergrate.uk/products/moulded-gratings/covered-grating/) is an augmented version of our popular grating products that is equipped with a slip-resistant floor plate to provide a solid walking surface. This add-on covering makes it possible to customise grating for various industrial and commercial applications. This type of product provides approximately 30% higher stiffness than open mesh grating.  [GRP structural plates](https://www.fibergrate.uk/products/fibreglass-plate/) (sometimes referred to fibreglass plates) are made from fibreglass embedded in a moulded resin matrix. They are solid plates of GRP in various colours that can be cut to the desired size and shape. Fibreglass plates can be used as a standalone product for applications such as flooring when an open mesh is not required. This specially designed product is non-porous, easily cleaned by a high-pressure washer, and can withstand cleaning solutions. ## Benefits of Moulded or Pultruded GRP with a Grating Cover **Increased Stability and Load-Bearing Capacity:** A solid top distributes weight more evenly across the underlying grating, enhancing its load-bearing capabilities. This makes covered grating ideal for heavy-duty industrial environments like factories and warehouses that can handle significant foot traffic and equipment loads.  **Prevents Contamination of Work Surfaces Below:** The solid top acts as a barrier, preventing debris, spills, and liquids from falling through the grating and contaminating work areas underneath. This can be helpful in applications like food processing facilities, laboratories, and pharmaceutical plants. Of course, this depends on how the area is cleaned. Some food and beverage plants use elevated open grating for work platforms and spray clean underneath them. **Helps Control Subsurface Odours:** Some industrial processes can generate unpleasant odours. Grating covers help contain these odours by preventing them from rising through the open spaces of traditional grating.  **Level Surface for Cart and Foot Traffic:** The solid top surface creates a smooth, slip-resistant surface that offers a less bumpy ride for wheeled carts. A solid surface may be particularly beneficial for areas with high foot traffic. It is an extra precaution for site visitors who may wear shoes with narrow heels which could get caught in open grating. Additionally, the solid top prevents objects from falling through the grating, minimising trip hazards. - Use cases for pultruded covered grating include [utility trench covers](https://www.fibergrate.uk/case-studies/water-wastewater-case-studies/utility-trench-covers-for-wastewater-treatment-plant/) - watch the video   - [Moulded covered grating](https://www.fibergrate.uk/products/moulded-gratings/covered-grating/) is often used over walkways over tank tops and vats. ## Exploring GRP Open Grating ![GRP Open Grating](https://blog.fibergrate.com/hs-fs/hubfs/FRP%20Open%20Grating.gif?width=360&height=270&name=FRP%20Open%20Grating.gif) GRP open grating   [Open grating](https://fibergrate.uk/products/moulded-gratings/), the more traditional type of GRP flooring, features a grid-like design with bars spaced close together for structural strength.  #### Limitations of GRP Open Design **Allows for Natural Drainage and Ventilation:** Liquids and debris easily pass through the openings, preventing them from accumulating on the surface. This makes open grating ideal for outdoor applications where water drainage is essential. These characteristics make it ideal for outdoor walkways, trenches, and platforms. Additionally, the open design allows for air circulation which can be beneficial in promoting a cooler work environment in indoor spaces.  **Lightweight and Easy to Install:** Open grating is lighter than its solid counterpart, making it easier to transport and install. This can be a significant advantage in large-scale projects or situations where weight limitations exist. **Allows Sunlight to Penetrate:** Open grating allows sunlight to pass through, which is crucial for promoting healthy marine life in applications like docks, piers, and boathouses. In some cases, this may be a regulatory requirement in marine applications. ## Factors Influencing the Choice Between Open Grating and GRP with a Grating Cover ![GRP moulded grating service platform](https://blog.fibergrate.com/hs-fs/hubfs/Imported_Blog_Media/FRP-Service-Platforms-for-Generators-Molded-Grating.jpg?width=500&height=500&name=FRP-Service-Platforms-for-Generators-Molded-Grating.jpg) GRP service platform for generators   Choosing between covered grating and open grating hinges on several key factors: **Load Requirements and Structural Considerations:** Consider the weight the grating will need to support. For heavy-duty applications, there are [high load pultruded gratings](https://www.fibergrate.uk/products/pultruded-grating/high-load-pultruded-grating/) that are designed specifically for heavy-turning traffic (such as forklifts). **Environmental Factors:** Think about exposure to chemicals, weather, or corrosion.  Fibreglass from Fibergrate excels in corrosion resistance, making both covered grating and open grating ideal for harsh environments; however, open grating may be preferable in situations requiring maximum airflow or minimising ice buildup. **Safety Regulations and Standards:** Specific safety regulations might dictate the type of grating needed. For instance, some areas may require slip-resistant surfaces or a solid top to prevent objects from falling through. **Cost-Effectiveness and Long-Term Maintenance:** Evaluate the initial cost of the grating material and installation alongside potential maintenance needs. While open grating might have a lower upfront cost, its open design may require more frequent cleaning to prevent debris buildup. Covered gratings, with their solid surface, might require less frequent cleaning but may have a slightly higher initial cost. ## Benefits and Uses of GRP Plate Products Fiberplate is a moulded GRP product that is highly corrosion resistant, even more so than stainless steel. It is slip resistant which makes it an optimal choice in wet or slippery environments. Available in thicknesses from ⅛” to ¾”, it has some load bearing capacity, but is not a substitute for grating for areas with a high volume of heavy traffic. Like Fibergrate’s grating products, FIberplate is lightweight and easy to install using power hand tools.  Applications for glass reinforced plate include [car washes](https://www.fibergrate.uk/case-studies/architectural-commercial-case-studies/carwash-tunnel-with-fiberplate-and-moulded-grating/) and other environments where there are caustic chemicals in use. ## Which GRP Product Is Right for Your Project? Consulting with a qualified GRP structural engineer is highly recommended. They can assess your specific needs and recommend the optimal grating solution for your application, considering factors like load requirements, environmental conditions, safety regulations, and cost-effectiveness. [![benefits of GRP (Glass Reinforced Plastic) Grating](https://hubspot-no-cache-na2-prod.s3.amazonaws.com/cta/default/344648/124fc57e-171b-47ab-a2d6-675b07b7157f.png)](https://hubspot-cta-redirect-na2-prod.s3.amazonaws.com/cta/redirect/344648/124fc57e-171b-47ab-a2d6-675b07b7157f) Topics: [Safety](https://blog.fibergrate.com/en-gb/blog/tag/safety), [Glass Reinforced Plastic](https://blog.fibergrate.com/en-gb/blog/tag/glass-reinforced-plastic), [GRP](https://blog.fibergrate.com/en-gb/blog/tag/grp), [Moulded Grating](https://blog.fibergrate.com/en-gb/blog/tag/moulded-grating), [Fibreglass grating](https://blog.fibergrate.com/en-gb/blog/tag/fibreglass-grating) ### Recent Posts ### Posts by tag - [GRP (120)](https://blog.fibergrate.com/en-gb/blog/tag/grp) - [Glass Reinforced Plastic (70)](https://blog.fibergrate.com/en-gb/blog/tag/glass-reinforced-plastic) - [Fibreglass grating (46)](https://blog.fibergrate.com/en-gb/blog/tag/fibreglass-grating) - [Corrosion Resistant (44)](https://blog.fibergrate.com/en-gb/blog/tag/corrosion-resistant) - [Safety (35)](https://blog.fibergrate.com/en-gb/blog/tag/safety) - [Moulded Grating (28)](https://blog.fibergrate.com/en-gb/blog/tag/moulded-grating) - [Benefits (21)](https://blog.fibergrate.com/en-gb/blog/tag/benefits) - [Slip Resistant (21)](https://blog.fibergrate.com/en-gb/blog/tag/slip-resistant) - [Pultruded Grating (20)](https://blog.fibergrate.com/en-gb/blog/tag/pultruded-grating) - [Low Maintenance (14)](https://blog.fibergrate.com/en-gb/blog/tag/low-maintenance) - [Construction (13)](https://blog.fibergrate.com/en-gb/blog/tag/construction) - [Architecture (12)](https://blog.fibergrate.com/en-gb/blog/tag/architecture) - [Employee Safety (9)](https://blog.fibergrate.com/en-gb/blog/tag/employee-safety) - [GRP, Moulded Grating (9)](https://blog.fibergrate.com/en-gb/blog/tag/grp-moulded-grating) - [Light Weight (9)](https://blog.fibergrate.com/en-gb/blog/tag/light-weight) - [architectural (9)](https://blog.fibergrate.com/en-gb/blog/tag/architectural) - [GRP UV Resistance (8)](https://blog.fibergrate.com/en-gb/blog/tag/grp-uv-resistance) - [Guardrail (8)](https://blog.fibergrate.com/en-gb/blog/tag/guardrail) - [Impact Resistant (7)](https://blog.fibergrate.com/en-gb/blog/tag/impact-resistant) - [Non-Conductive (7)](https://blog.fibergrate.com/en-gb/blog/tag/non-conductive) - [Railing (7)](https://blog.fibergrate.com/en-gb/blog/tag/railing) - [Data Centres (6)](https://blog.fibergrate.com/en-gb/blog/tag/data-centres) - [Long Service Life (6)](https://blog.fibergrate.com/en-gb/blog/tag/long-service-life) - [Metals & Mining (6)](https://blog.fibergrate.com/en-gb/blog/tag/metals-mining) - [Decking (5)](https://blog.fibergrate.com/en-gb/blog/tag/decking) - [Antimicrobial (4)](https://blog.fibergrate.com/en-gb/blog/tag/antimicrobial) - [Data Centre (4)](https://blog.fibergrate.com/en-gb/blog/tag/data-centre) - [Electrical Equipment Fencing (4)](https://blog.fibergrate.com/en-gb/blog/tag/electrical-equipment-fencing) - [Hazard Prevention (4)](https://blog.fibergrate.com/en-gb/blog/tag/hazard-prevention) - [Non-Magnetic (4)](https://blog.fibergrate.com/en-gb/blog/tag/non-magnetic) - [Stair Treads (4)](https://blog.fibergrate.com/en-gb/blog/tag/stair-treads) - [outdoor (4)](https://blog.fibergrate.com/en-gb/blog/tag/outdoor) - [Custom Railing (3)](https://blog.fibergrate.com/en-gb/blog/tag/custom-railing) - [Dynarail (3)](https://blog.fibergrate.com/en-gb/blog/tag/dynarail) - [Electrically Non-Conductive Fencing (3)](https://blog.fibergrate.com/en-gb/blog/tag/electrically-non-conductive-fencing) - [Fencing (3)](https://blog.fibergrate.com/en-gb/blog/tag/fencing) - [Food and Beverage (3)](https://blog.fibergrate.com/en-gb/blog/tag/food-and-beverage) - [Low Installation Cost (3)](https://blog.fibergrate.com/en-gb/blog/tag/low-installation-cost) - [Pedestals (3)](https://blog.fibergrate.com/en-gb/blog/tag/pedestals) - [Protective Barriers (3)](https://blog.fibergrate.com/en-gb/blog/tag/protective-barriers) - [Raised Flooring System (3)](https://blog.fibergrate.com/en-gb/blog/tag/raised-flooring-system) - [Rapid Installation (3)](https://blog.fibergrate.com/en-gb/blog/tag/rapid-installation) - [Rooftop Deck (3)](https://blog.fibergrate.com/en-gb/blog/tag/rooftop-deck) - [Stairs (3)](https://blog.fibergrate.com/en-gb/blog/tag/stairs) - [UV Resistant (3)](https://blog.fibergrate.com/en-gb/blog/tag/uv-resistant) - [Wastewater (3)](https://blog.fibergrate.com/en-gb/blog/tag/wastewater) - [Water (3)](https://blog.fibergrate.com/en-gb/blog/tag/water) - [Air Duct Screens (2)](https://blog.fibergrate.com/en-gb/blog/tag/air-duct-screens) - [Cost Effective (2)](https://blog.fibergrate.com/en-gb/blog/tag/cost-effective) - [Docks (2)](https://blog.fibergrate.com/en-gb/blog/tag/docks) - [ENC (2)](https://blog.fibergrate.com/en-gb/blog/tag/enc) - [FGI-AM (2)](https://blog.fibergrate.com/en-gb/blog/tag/fgi-am) - [Fiberglass Reinforced Plastic (2)](https://blog.fibergrate.com/en-gb/blog/tag/fiberglass-reinforced-plastic) - [Hazard Control (2)](https://blog.fibergrate.com/en-gb/blog/tag/hazard-control) - [MRI (2)](https://blog.fibergrate.com/en-gb/blog/tag/mri) - [Metals and Mining (2)](https://blog.fibergrate.com/en-gb/blog/tag/metals-and-mining) - [Stair Tread Covers (2)](https://blog.fibergrate.com/en-gb/blog/tag/stair-tread-covers) - [Steel (2)](https://blog.fibergrate.com/en-gb/blog/tag/steel) - [Structural Shapes (2)](https://blog.fibergrate.com/en-gb/blog/tag/structural-shapes) - [Trench Covers (2)](https://blog.fibergrate.com/en-gb/blog/tag/trench-covers) - [WWTP (2)](https://blog.fibergrate.com/en-gb/blog/tag/wwtp) - [Winery (2)](https://blog.fibergrate.com/en-gb/blog/tag/winery) - [Aqua Grate (1)](https://blog.fibergrate.com/en-gb/blog/tag/aqua-grate) - [Corrosion (1)](https://blog.fibergrate.com/en-gb/blog/tag/corrosion) - [Engineering Services (1)](https://blog.fibergrate.com/en-gb/blog/tag/engineering-services) - [Equipment Guard (1)](https://blog.fibergrate.com/en-gb/blog/tag/equipment-guard) - [Ergonomics (1)](https://blog.fibergrate.com/en-gb/blog/tag/ergonomics) - [FRP (1)](https://blog.fibergrate.com/en-gb/blog/tag/frp) - [FRP Decking (1)](https://blog.fibergrate.com/en-gb/blog/tag/frp-decking) - [FRP Fence (1)](https://blog.fibergrate.com/en-gb/blog/tag/frp-fence) - [Fibreglass Flooring (1)](https://blog.fibergrate.com/en-gb/blog/tag/fibreglass-flooring) - [Full Service (1)](https://blog.fibergrate.com/en-gb/blog/tag/full-service) - [Gas (1)](https://blog.fibergrate.com/en-gb/blog/tag/gas) - [Life Cycle Cost (1)](https://blog.fibergrate.com/en-gb/blog/tag/life-cycle-cost) - [Machinery Guard (1)](https://blog.fibergrate.com/en-gb/blog/tag/machinery-guard) - [Marine (1)](https://blog.fibergrate.com/en-gb/blog/tag/marine) - [Material Costs (1)](https://blog.fibergrate.com/en-gb/blog/tag/material-costs) - [Molded Grating (1)](https://blog.fibergrate.com/en-gb/blog/tag/molded-grating) - [Oil (1)](https://blog.fibergrate.com/en-gb/blog/tag/oil) - [Reliability (1)](https://blog.fibergrate.com/en-gb/blog/tag/reliability) - [Substation (1)](https://blog.fibergrate.com/en-gb/blog/tag/substation) - [Substation Enclosures (1)](https://blog.fibergrate.com/en-gb/blog/tag/substation-enclosures) - [Substation Expansion (1)](https://blog.fibergrate.com/en-gb/blog/tag/substation-expansion) - [Telecom (1)](https://blog.fibergrate.com/en-gb/blog/tag/telecom) - [Transformer Cages (1)](https://blog.fibergrate.com/en-gb/blog/tag/transformer-cages) - [Wall Fan Screens (1)](https://blog.fibergrate.com/en-gb/blog/tag/wall-fan-screens) - [Wastewater Treatment Works (1)](https://blog.fibergrate.com/en-gb/blog/tag/wastewater-treatment-works) - [awning (1)](https://blog.fibergrate.com/en-gb/blog/tag/awning) - [handrails (1)](https://blog.fibergrate.com/en-gb/blog/tag/handrails) - [manufacturing (1)](https://blog.fibergrate.com/en-gb/blog/tag/manufacturing) - [moulded grating vs pultruded grating (1)](https://blog.fibergrate.com/en-gb/blog/tag/moulded-grating-vs-pultruded-grating) - [oil and gas (1)](https://blog.fibergrate.com/en-gb/blog/tag/oil-and-gas) - [parks and playgrounds (1)](https://blog.fibergrate.com/en-gb/blog/tag/parks-and-playgrounds) - [phenolic grating (1)](https://blog.fibergrate.com/en-gb/blog/tag/phenolic-grating) - [recreation (1)](https://blog.fibergrate.com/en-gb/blog/tag/recreation) - [shade structure (1)](https://blog.fibergrate.com/en-gb/blog/tag/shade-structure) - [sound barrier walls (1)](https://blog.fibergrate.com/en-gb/blog/tag/sound-barrier-walls) - [sunscreen (1)](https://blog.fibergrate.com/en-gb/blog/tag/sunscreen) - [work platforms (1)](https://blog.fibergrate.com/en-gb/blog/tag/work-platforms) See all #### Related Articles [Pultruded Grating](https://blog.fibergrate.com/en-gb/blog/tag/pultruded-grating), [Glass Reinforced Plastic](https://blog.fibergrate.com/en-gb/blog/tag/glass-reinforced-plastic), [GRP](https://blog.fibergrate.com/en-gb/blog/tag/grp), [Moulded Grating](https://blog.fibergrate.com/en-gb/blog/tag/moulded-grating), [GRP UV Resistance](https://blog.fibergrate.com/en-gb/blog/tag/grp-uv-resistance) ##### [UV Performance of GRP Moulded Gratings](https://blog.fibergrate.com/en-gb/blog/uv-performance-of-moulded-gratings?hsLang=en-gb) GRP grating (with or without a grating cover) and GRP plate are versatile and widely used materials... [Read more](https://blog.fibergrate.com/en-gb/blog/uv-performance-of-moulded-gratings?hsLang=en-gb) [Safety](https://blog.fibergrate.com/en-gb/blog/tag/safety), [Aqua Grate](https://blog.fibergrate.com/en-gb/blog/tag/aqua-grate), [GRP](https://blog.fibergrate.com/en-gb/blog/tag/grp) ##### [GRP Catwalk Grating: Material Selection Guide](https://blog.fibergrate.com/en-gb/blog/grp-catwalk-grating-material-selection-guide?hsLang=en-gb) GRP grating (with or without a grating cover) and GRP plate are versatile and widely used materials... [Read more](https://blog.fibergrate.com/en-gb/blog/grp-catwalk-grating-material-selection-guide?hsLang=en-gb) [Pultruded Grating](https://blog.fibergrate.com/en-gb/blog/tag/pultruded-grating), [Glass Reinforced Plastic](https://blog.fibergrate.com/en-gb/blog/tag/glass-reinforced-plastic), [GRP](https://blog.fibergrate.com/en-gb/blog/tag/grp), [Moulded Grating](https://blog.fibergrate.com/en-gb/blog/tag/moulded-grating) ##### [Fibreglass Gratings vs. Metal Gratings: Choosing Project Materials](https://blog.fibergrate.com/en-gb/blog/fibreglass-gratings-vs-metal-gratings-choosing-project-materials?hsLang=en-gb) GRP grating (with or without a grating cover) and GRP plate are versatile and widely used materials... 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