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Solid Surface FRP Grating for Industrial and Public Access
Overview
This Tech Talk Tuesday session focuses on solid surface FRP grating, which combines the structural benefits of FRP grating with a continuous top surface. The session explains where this product type is useful, how different surface finishes can be selected, and why it is often considered for industrial access, public walkways, food processing, water treatment, mine processing and pedestrian infrastructure.
The discussion covers standard FRP grating with a solid top layer, HygiGR8® style hybrid systems that combine open mesh with solid areas above support members, and retrofit solutions that can be added to existing GratEX square mesh to reduce build-up above structural members. The presenter also explains where solid surface FRP grating is suitable, and where a sealed panel system, such as SureLine, is a better option for tank covers or odour control covers.
Treadwell positions FRP as a durable, dependable and practical alternative for areas affected by corrosion, rot, UV degradation and other environmental challenges, with products used across water and wastewater, food and beverage, mining, utilities, rail and public infrastructure sectors.
Key Benefits
Solid top surface for safer access
Solid surface FRP grating provides a continuous walking surface where open mesh may not be suitable. This can help reduce the risk of small objects, tools, debris or personal items falling through the deck in industrial and public access areas.
Multiple surface finish options
Treadwell can supply solid surface FRP grating with anti-slip, checker plate, diamond plate, plain or smooth finishes. The anti-slip finish can achieve a P5 rating to AS 4586, while less aggressive finishes may suit food manufacturing, public access or locations where easier cleaning is important.
Useful for industrial walkways above plant or operations
Industrial platforms are often positioned above machinery, process areas, other walkways or operational zones. A solid surface helps reduce falling object concerns and improves safety where personnel or equipment may be below.
Reduced build-up above structural members
The HygiGR8 style system keeps the area above support members solid while leaving other sections open. This helps reduce slurry, food matter, debris, or wet material build-up directly over beams and supports, which is often where corrosion begins or accelerates.
Improved cleanability in food processing areas
In food manufacturing environments, checker plate, diamond plate or concave surface options can be easier to clean than aggressive gritted surfaces. This reduces the chance of food particles being ground into the surface and becoming difficult to remove during washdown.
Retrofittable solution for existing square mesh
For existing GratEX square mesh installations, Treadwell can provide a retrofit strip system using DeckSafe-style anti-slip solid plates and clips. This allows targeted areas above support members to be covered without replacing the full grating panel.
Supports public access and pedestrian requirements
Solid surface FRP grating is useful for public walkways, bridges, rail crossover structures and other areas where a fully solid deck is preferred. It can also support line marking, directional signage and clearer visual definition compared with open mesh grating.
Lightweight, corrosion-resistant FRP performance
FRP grating is recognised for resisting corrosion compared with steel grating and is commonly used in corrosive environments to reduce maintenance requirements. Treadwell also highlights FRP as suitable for sectors where corrosion, chemicals and environmental exposure are key concerns.
Applications
Industrial platforms and walkways
Solid surface FRP grating can be used for platforms and walkways in water treatment, mine processing, industrial plants and operational environments where debris, tools or process material should not fall through the deck.
Food manufacturing and wash down areas
HygiGR8 style systems are especially useful in food processing facilities, where build-up above structural members can create hygiene concerns. The webinar example from a Victorian food processing plant shows how solid areas over the support members allow the platform to be washed down more effectively at the end of a shift.
Walkways above steel or FRP support structures
Where slurry, wet material or debris collects on the structure below the mesh grating, corrosion risk can increase. A hybrid solid and open mesh system can help prevent build-up on the support members while maintaining some of the drainage and fall-through benefits of open mesh.
Public pedestrian bridges and access decks
Solid surface FRP grating can be used where clients want a fully solid deck rather than open mesh. The Cooks River Bridge in Sydney is referenced as an example of a public walkway using a full FRP solid surface deck.
High heel safe and public access areas
The webinar explains that there is no specific Australian standard defining high heel safe grating, but that smaller openings, generally around 10 mm or less, are often considered safer for high heel traffic. Where clients want to avoid openings completely, solid surface FRP grating is a practical option.
Stair treads with solid surfaces
Solid surface FRP can also be manufactured into stair treads, including contrast colour nosing where required. This allows the same surface strategy to be applied across walkways, landings and stair access points.
Vehicle traffic and heavy-duty applications
The transcript notes that heavy-duty meshes can also be manufactured with solid surfaces for vehicle traffic or other demanding use cases, depending on the project requirement and product selection.
Line marking and directional signage areas
Solid surface FRP grating gives a clearer surface for line marking, directional arrows, walk zones and other visual safety cues. This is more difficult to achieve with the same definition on open mesh surfaces.
Conveyor side guarding and vertical installations
Plain surface FRP panels can be used in vertical applications such as conveyor side guarding, where weight, removability and reduced injury risk are important.
Not recommended for sealed tank covers
The session makes an important distinction: solid surface FRP grating is not the best solution when a sealed surface is required, such as potable water storage, tank covers or odour control covers. In those cases, Treadwell recommends SureLine interlocking panels, which are designed for sealed tank and odour control cover applications.
Key Moments
- 00:27 👋 Welcome to Tech Talk Tuesday on solid surface FRP grating for industrial and public applications.
- 00:58 🔍 FRP solid surface grating combines standard mesh with a solid top layer for debris control.
- 01:54 🛠️ Available finishes include P5 anti-slip, checker/diamond plate, and plain smooth surfaces.
- 02:20 🚧 Solid tops work on heavy-duty meshes, stair treads, and vehicle traffic areas.
- 03:02 🧼 Checker plate suits food manufacturing for easy cleaning without grit embedding.
- 04:45 🧼 Hygienic system fills cells above structural members to stop material build-up and corrosion.
- 06:04 🥾 HygiGR8® offers anti-slip or concave surfaces for traction in wet or food environments.
- 07:00 🔧 Retrofit Deck Safe clips enable quick solid strips over existing 38x38mm mesh supports.
- 07:58 ⚠️ Prevents falling tools/debris and slurry-induced corrosion on steel structures.
- 08:40 📏 Exceeds AS 1657 mesh standards for tighter object retention where needed.
- 09:08 🚫 Not ideal for fully sealed tank covers; SureLine® Panels recommended instead.
- 10:17 👠 Provides high-heel-safe solid decks for public walkways and rail crossovers.
- 11:14 🧹 Solid surface enables easier cleaning and clear line markings versus open mesh.
- 11:56 🌉 Cockatoo Bridge example: full solid FRP deck for pedestrian use in Sydney.
- 12:10 🏭 HygiGR8® used in Victorian food plant to eliminate build-up on supports for hygiene.
Why Treadwell?
Treadwell has been operating since 1994 and is an established provider of FRP products and solutions across Australia and New Zealand, with experience in mining, water and wastewater, food and beverage, utilities, rail and public infrastructure.
For solid surface FRP grating, Treadwell offers more than one product format. The session shows that the team can support full solid surface grating, stair treads, heavy-duty solid top grating, HygiGR8® style hybrid panels, and retrofit solutions for existing GratEX square mesh. This allows engineers and asset owners to choose the right balance between safety, cleanability, corrosion resistance, drainage and build-up control.
Treadwell also helps customers avoid product misapplication. In this webinar, the presenter clearly explains that solid surface grating should not be treated as a sealed tank or odour cover system, and that SureLine® panels are better suited to that role. This practical guidance is valuable for consultants, contractors and asset owners who need FRP systems that are fit for purpose, easy to maintain and appropriate for the environment.
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*Disclaimer
The information on this page is derived from webinar content and AI-assisted transcription and summarisation. While every effort has been made to ensure accuracy, minor inaccuracies may occur. We recommend viewing the original webinar recording for context.
