If you’re buying FRP grating in Canada, one of the first decisions you’ll face is whether to choose a molded grafting or pultruded grating. While they may look similar at first glance, they are actually designed for different applications.
If you choose the wrong type, it can lead to unnecessary cost, excessive deflection, or a grating system that isn’t optimized for your environment.
This is the reason engineers, procurement managers and contractors spend so much time evaluating grafting specifications before placing an order.
The right grafting depends on several factors including span requirements, chemical exposure, load conditions, maintenance expectations and the number of penetrations needed for pipes, ducts, and equipment.
Across Canadian industrial facilities, fiberglass grating, also commonly spelled fiberglass grating, is increasingly replacing traditional steel grating in corrosive environments.
Wastewater plants, mining operations, chemical facilities and pulp and paper mills use fibre-reinforced plastic (FRP) grating because it resists corrosion, requires minimal maintenance and is significantly lighter than steel.
Quick Answer: What is FRP grating?
FRP (fibre-reinforced plastic) grating, also called fibreglass grating, is available in Canada in two main types: molded grating and pultruded grating. Each suits different applications based on span, load, penetrations and chemical exposure.
This buyer’s guide covers both types, standard specifications, chemical resistance grades, industry applications and how to choose the right FRP grating supplier in Canada.
In this guide, we will highlight the differences between molded and pultruded grating, explain key specifications, compare FRP against steel, review common industry applications and outline the questions every buyer should ask before selecting a grating system. We’ll also reference Access Industrial’s AccessGrate™ FRP grating line, which is supplied to industrial facilities across Canada.
In This Guide
- What FRP fiberglass grating is and where it’s used
- Molded vs pultruded FRP grating: key differences
- Standard FRP grating specifications
- FRP grating vs steel grating
- Chemical resistance and resin selection
- Industry applications across Canada
- How to choose the right grating for your project
- Installation and maintenance considerations
- Frequently asked questions from Canadian buyers
What is FRP Fiberglass Grating?
FRP grating is a load-bearing industrial flooring product made from fibreglass reinforcements embedded within a resin matrix. The result is a strong, lightweight grating panel designed for environments where corrosion, moisture, chemicals and ongoing maintenance make traditional materials less practical.
In industrial facilities across Canada, FRP grating is commonly used for walkways, access platforms, mezzanines, trench covers, drainage covers, stair treads and elevated work areas. Unlike steel grating, it will not rust and does not require regular painting or protective coatings to maintain its performance.
One reason fiberglass grating has become increasingly popular is due to its combination of corrosion resistance, slip resistance and low weight. Maintenance teams can often handle and install panels without lifting equipment, while facility owners benefit from lower-term maintenance costs. FRP grating is also non-conductive, making it a preferred option in many electrical, chemical and water-treatment environments.
You’ll see both the terms fiberglass grating and fibreglass grating being used throughout Canada. They refer to the same product, with “fiberglass” being the more common industry term and “fibreglass” reflecting Canadian and British spelling conventions.
There are two primary manufacturing methods to produce FRP grating: molded grating and pultruded grating. While both offer excellent corrosion resistance, they differ significantly in structure, span capability and ideal applications. It is important to understand these differences as it is the key to choosing the right grafting for your project.
Molded vs Pultured FRP Grating: What’s the Difference and Which Should You Choose?
For most buyers, this is the most important decision in the entire specification process. Both molded and pultruded FRP grating offer excellent corrosion resistance, slip resistance and long service life, but they are designed for different operating conditions.
The right choice depends on your span requirements, load conditions, number of penetrations and the environment where the grating will be installed.
AccessGrate™ Molded FRP Grating
Molded FRP grating is manufactured by weaving fibreglass strands in both directions and embedding them within a resin matrix. This creates a bidirectional grid structure with strength distributed across both axes, allowing loads to be shared evenly throughout the panel.
Because the structure is bidirectional, molded FRP granting performs particularly well in areas with multiple pipe penetrations, ducts, conduits and equipment openings. Cuts can be made almost anywhere in the panel while retaining structural integrity. It also offers superior UV resistance compared to pultruded grating, making it a popular choice for outdoor installations.
AccessGrate™ molded grating is commonly stocked in 3 ft × 10 ft, 5 ft × 10 ft and 4 ft × 12 ft panels. Available mesh options include 1.5-inch mesh (maximum pedestrian span of approximately 3 ft) and 2-inch mesh (maximum pedestrian span of approximately 2 ft.)
While highly versatile, molded grating generally exhibits more deflection than pultruded grating over longer spans.
AccessGrate™ Pultruded FRP Grating
Pultruded grating is manufactured by pulling continuous fibreglass strands through a resin bath and heated die, creating parallel bearing bars connected by cross rods. This produces a unidirectional structure where strength is concentrated in the bearing bar direction.
The advantage is rigidity. Pultruded grating is significantly stiffer than molded grating and is typically the preferred choice for longer spans where minimizing deflection is important. In many industrial applications, pultruded grating can span up to 1,500 mm (approximately 5 ft) under pedestrian loading conditions.
AccessGrate™ pultruded grating is typically stocked in 3 ft × 10 ft and 4 ft × 10 ft panel sizes with a 2-inch profile and 50% open area. It combines high rigidity with slip resistance, Class 1 fire retardance and excellent corrosion resistance, making it the workhorse solution for plant walkways, equipment platforms and long-span access areas with relatively few penetrations.
| Feature | Molded FRP Grafting | Pultruded FRP Grating |
|---|---|---|
| Structure | Bidirectional (grid): equal all-round strength | Unidirectional: bearing bar direction |
| Best for | Multiple penetrations, UV exposure | Long spans, high rigidity, fewer cuts |
| Max span (pedestrian) | 3 ft (1.5″ mesh) / 4 ft (2″ mesh) | Up to 1,500 mm (~5 ft) |
| Standard panel sizes | 3×10, 5×10, 4×12 ft | 3×10, 4×10 ft |
| Profile options | 1.5″ and 2″ mesh | 2″ (50% open area) |
| Deflection | More deflection, less stiff | Less deflection, stiffer |
| UV Resistance | Superior | Standard |
| Fire rating | Class 1 Fire Retardant | Class 1 Fire Retardant |
| Corrosion Resistance | Excellent | Excellent |
| Slip resistance | Yes: grit or gritted surface | Yes: grit or gritted surface |
| Typical | Wastewater tanks, HVAC areas, penetrated platforms | Plant walkways, long-span mezzanines, equipment platforms |
For projects where multiple penetrations, outdoor exposure and layout flexibility are the priority, molded FRP grating is often the better choice. If your project requires longer spans and greater rigidity, pultruded grating will usually deliver better performance.
See our full range of AccessGrate™ fiberglass grating
FRP Fiberglass Grating: Standard Specifications for Canada
When evaluating FRP grating specifications, most buyers focus on four factors: span capability, panel size, profile configuration and chemical resistance. While resin selection and support spacing ultimately determine performance, the specifications below provide a practical starting point for engineers, procurement teams and contractors sourcing fiberglass grating in Canada.
The following table summarizes the standard specifications for AccessGrate™ molded and pultruded grating products. Final selections should always be confirmed against project-specific load requirements, support spacing and environmental conditions.
| Specification | Molded Grating | Pultruded Grating |
|---|---|---|
| Panel sizes (stocked) | 3×10 ft, 5×10 ft, 4×12 ft | 3×10 ft, 4×10 ft |
| Mesh/profile size | 1.5″ mesh, 2″ mesh | 2″ profile (50% open area) |
| Max span (pedestrian load) | 3 ft (1.5″) / 4 ft (2″) | Up to 1,500 mm (~5 ft) |
| Depth/thickness | Confirm with engineering team | 2″ standard |
| Fire rating | Class 1 Fire Retardant | Class 1 Fire Retardant |
| Open Area | Confirm with engineering team | 50% open area |
| Slip Resistance | Anti-slip grit surface available | Anti-slip grit surface available |
| UV Resistance | Superior | Standard |
| Chemical Resistance | Multiple resin grades: see section 5 | Multiple resin grades: see section 5 |
| NSF61 Certified | Available on request | Available on request |
| Colours available | Multiple: confirm with engineering team | Multiple: confirm with engineering team |
| Custom Sizes | Yes: contact engineering team | Yes: contact engineering team |
For specification-grade projects, engineers should also verify load ratings, support spacing, grating depths and open-area percentages before finalizing drawings or procurement documents. These values can vary based on mesh configuration, resin system and project requirements.
If your project requires custom dimensions, specific chemical resistance performance or NSF61-certified products, Access Industrial’s engineering team can help identify the appropriate FRP floor grating specifications for your application before tendering or installation begins.
FRP Fiberglass Grating vs Steel Bar Grating: Which Is Better for Your Facility?
When comparing FRP grating vs steel, the question is rarely about upfront material cost alone. For most industrial facilities, the real consideration is total cost of ownership over the life of the installation. Corrosion, maintenance requirements, installation complexity and replacement cycles all affect long-term value.
Steel bar granting in a wastewater or chemical plant environment typically requires repainting every 3-5 years and replacement within 10-15 years. FRP fiberglass grating eliminates that maintenance cycle entirely; here’s how the materials compare across the factors that matter most.
| Property | FRP Fiberglass Grating | Steel Bar Grating | Aluminium Grating |
|---|---|---|---|
| Corrosion resistance | Excellent: no rust, no coating | Corrodes; requires coating | Moderate: limited chemicals |
| Weight | 25% of steel weight | Heavy | Moderate |
| Maintenance | None- no painting or coating | Repaint every 3-5 years | Occasional treatment |
| Electrical conductivity | Non conductive (safe) | Conductive | Conductive |
| Chemical resistance | Excellent- resin grade options | Limited | Moderate |
| NSF61 Option | Available | Not typically | Not typically |
| Installation | Lightweight: easy manual handling | Requires lifting equipment | Moderate |
| Slip Resistance | Anti-grit surface available | Serrated surface only | Serrated surface only |
| Lifespan (corrosive environment) | 20-30+ years | 5-15 years maintained | 10-20 years |
| Total cost of ownership | Lower long-term | Higher: maintenance + replacement | Moderate |
For facilities exposed to moisture, chemicals, washdowns, or aggressive industrial environments, corrosion resistant grating in Canada is often selected based on lifecycle performance rather than initial purchase price.
FRP grating offers a combination of corrosion resistance, low weight, electrical safety and reduced maintenance that traditional steel systems cannot easily match.
For a deeper look at the advantages of FRP materials in industrial environments, see FRP benefits.
FRP Grating Chemical Resistance: Choosing the Right Resin Grade
One of the biggest misconceptions about FRP grating chemical resistance is that all FRP products perform the same way in every environment. In reality, the chemical resistance of FRP grating depends largely on the resin system used during manufacturing. Selecting the correct resin grade is often just as important as selecting the right grating type.
For engineers and procurement teams, resin selection should be based on the specific chemicals, concentrations, temperatures and operating conditions the grating will be exposed to throughout its service life.
| Resin Grade | Best For | Common Applications |
|---|---|---|
| Isophthalic Polyester | General industrial environments with moderate chemical exposure | Wastewater walkways, mining access platforms, general industrial facilities |
| Vinyl Ester | Aggressive chemical environments including chlorine, acids and solvents | Chemical plants, pulp & paper facilities, scrubber areas, pharmaceutical operations |
| Epoxy | High-performance applications requiring enhanced chemical resistance and cleanliness | Food processing facilities, pharmaceutical plants, high-purity water treatment systems |
| NSF61-Certified Grades | Water and wastewater contact applications requiring regulatory compliance | Drinking water treatment facilities, municipal water infrastructure, portable water systems |
In our experience supplying fiberglass grating Canada projects across wastewater, mining and industrial processing facilities, vinyl ester resin is often specified where aggressive chemicals are present, while isophthalic polyester remains the most common and economical choice for general industrial applications.
For water treatment projects, NSF61 FRP grating options are available for applications involving direct or indirect contact with portable water. This is an important specification requirement that should be identified early in the design process.
Because chemical compatibility varies significantly between applications, engineers should avoid selecting a resin grade based solely on general guidelines. For any project involving chemical exposure, consult our engineering team with your specific chemical exposure profile to ensure the correct resin system is specified.
FRP & Fibreglass Grating Applications Across Canadian Industries
Across Canada, FRP grating is used in environments where corrosion, moisture, chemicals and maintenance costs make traditional materials difficult to justify. From municipal wastewater facilities to mining operations and pharmaceutical plants, fiberglass grating Canada applications continue to grow because of their long service life, corrosion resistance and low maintenance requirements.
Wastewater Treatments Plants
Wastewater facilities are among the largest users of FRP grating. Common applications include tank platforms, clarifier walkways, wet well flooring and trench covers exposed to constant moisture and hydrogen (H₂S).
Molded grating is often preferred for tank covers and penetrated surfaces, while pultruded grating is typically specified for longer walkway spans. NSF61-certified grades are available for applicable water-contact environments. Learn more about FRP platforms for wastewater treatment.
Mining Industry
Mining facilities use FRP grating applications for processing area flooring, sump covers, acid wash areas and elevated access platforms. Exposure to sulfuric acid, ferric sulfate and ore-processing chemicals often requires vinyl ester resin systems.
FRP’s non-conductive and non-sparking properties provide additional safety benefits in challenging mining environments.
Chemical & Pharmaceutical Plants
Chemical and pharmaceutical facilities frequently specify FRP grating for secondary containment flooring, chemical storage access platforms and reactor-area walkways.
Material compatibility is critical, so resin grades are selected based on the specific chemicals present. FRP provides corrosion resistance while supporting the cleanliness and reliability requirements common in these industries.
Pulp & Paper Industry
Pulp and paper mills expose flooring systems to chlorine compounds, bleaching chemicals, steam and continuous humidity. These conditions can significantly shorten the lifespan of steel grating.
FRP grating, particularly with vinyl ester resin systems, is widely used for bleach plant flooring, pulp tank access areas and chemical mixing platforms.
Water Treatment Plants
Water treatment facilities rely on industrial floor grating Canada solutions for filter access platforms, pump rooms and process equipment walkways. Where direct or indirect water contact occurs, NSF61-certified FRP grating may be required.
Access Industrial can supply FRP grating and related structures using NSF61-approved products for municipal and industrial water treatment projects across Canada.
How to Choose the Right FRP Grating for Your Project: 5 Key Questions
Choosing the right FRP grating Canada solution is not simply a matter of selecting a panel size. The correct specification depends on your environment, loading requirements, chemical exposure and installation layout. Before purchasing or specifying fiberglass grating, ask the following five questions:
1. What is the Chemical Environment?
The chemical environment determines the resin system required for long-term performance. Isophthalic polyester is suitable for many general industrial applications, while vinyl ester is often specified for aggressive chemicals such as chlorine, acids and solvents.
Epoxy may be recommended for certain high-performance environments. Share your chemical exposure profile with Access Industrial’s engineering team before finalizing specifications.
2. What Are the Span and Load Requirements?
Span length and loading conditions help determine whether molded or pultruded grating is the better choice. Pultruded grating is typically preferred for longer spans of up to 1,500 mm (~5 ft), while molded grating is commonly used for shorter spans and areas requiring frequent modifications. Load ratings should always be verified against project requirements.
3. How Many Penetrations or Cuts Are Needed?
If the installation includes numerous pipe penetrations, cable trays, ducts or equipment openings, molded grating is usually the preferred option. Its bidirectional structure retains strength even after multiple field cuts. Pultruded grating is generally better suited to installations with fewer penetrations and more continuous spans.
4. Is NSF61 Certification Required?
Projects involving potable water on drinking water treatment applications may require NSF61-certified products. This requirement should be identified early in the specification process, as not all stoked grating products carry NSF61 certification.
5. What Panel Size Fits Your Layout?
Standard panel sizes typically provide the most cost-effective solution and help minimize material waste. Before ordering, compare your layout against available panel dimensions. Custom cutting and fabrication are available when required.
Not sure which grating is right for your project? Contact Access Industrial’s engineering team; we’ll specify the correct type, resin grade and size for your environment.
FRP Fiberglass Grating Installation & Maintenance
One of the reasons many facilities choose FRP grating Canada solutions is that they are significantly easier to install and maintain than traditional steel alternatives. The combination of lightweight construction, corrosion resistance and long service life helps reduce both installation complexity and ongoing maintenance costs.
Installation
Most FRP grating panels are lightweight enough to be handled manually without cranes or heavy-lifting equipment. Standard panels can be cut on-site using a diamond blade or carbide-tipped saw, allowing contractors to accommodate pipes, ductwork and equipment penetrations as needed.
Panels are typically secured using grating clips, hold-down clamps or flat bar fastening systems attached to the supporting structure. Access Industrial supplies FRP grating with detailed shop drawings, engineering support and installation guidance to help ensure proper fit and performance.
In many cases, installation can be completed by a facility’s own maintenance team using the supplied specifications and drawings.
Maintenance
Unlike steel grating, FRP requires no painting, galvanizing or protective coating throughout its service life. Annual inspections are generally recommended to check for physical damage, verify attachment points remain secure and assess wear in high-traffic areas.
Where anti-slip grit surfaces experience heavy wear, refurbishment may be possible depending on the application. Routine cleaning can typically be completed using standard industrial cleaning methods without specialized maintenance procedures.
FRP grating is frequently installed alongside FRP work platforms, creating complete corrosion-resistant access systems for industrial facilities.
Frequently Asked Questions: FRP & Fiberglass Grating Canada
What is FRP fiberglass grating?
FRP (fibre-reinforced plastic) grating is a load-bearing grid panel manufactured from fiberglass reinforcements embedded in a resin matrix. Also called fiberglass grating or fibreglass grating, it is commonly used for industrial flooring, walkways, platforms and trench covers where corrosion resistance, low maintenance and long service life are important.
What is the difference between molded and pultruded FRP grating?
The main difference is structure. Molded FRP grating has a bidirectional grid pattern that distributes loads in multiple directions and performs well where numerous cuts or penetrations are required. Pultruded grating uses parallel bearing bars, providing greater stiffness and longer spans with less deflection.
Is FRP grating better than steel grating in corrosive environments?
For most corrosive applications, yes. When comparing FRP grating vs steel, FRP offers superior corrosion resistance, lower maintenance requirements and significantly lower weight. It does not rust, require repainting or rely on protective coatings, making it a popular corrosion resistant grating Canada solution.
What size does Access Industrial stock for FRP grating in Canada?
Access Industrial stocks molded grating panels in 3×10 ft, 5×10 ft and 4×12 ft sizes. Pultruded grating is stocked in 3×10 ft and 4×10 ft panels. Custom fabrication and cutting services are also available for project-specific requirements across Canada.
What is the maximum span for FRP grating under pedestrian loads?
For molded grating, standard pedestrian-load spans are typically up to 3 ft for 1.5-inch mesh and up to 4 ft for 2-inch mesh. Pultruded grating can span up to approximately 1,500 mm (5 ft) under pedestrian loading conditions. Final FRP grating specifications should always be confirmed by engineering review.
Is FRP grating NSF61 approved for water treatment applications?
Yes. NSF61 FRP grating is available on request for water and wastewater treatment projects where certification is required. NSF61 certification helps ensure materials meet requirements for portable water contact applications.
What resin grade should I specify for an H₂S or chlorine environment?
For aggressive chemical environments involving hydrogen sulfide (H₂S), chlorine or strong acids, vinyl ester resin is commonly recommended because of its enhanced FRP grating chemical resistance. Final resin selection should always be based on the specific chemical exposure profile.
Can FRP grating be cut to custom sizes on site?
Yes. FRP grating can typically be cut on-site using diamond-blade or carbide-tipped saws. Molded grating is particularly well suited for installations requiring multiple penetrations, while Access Industrial can also provide custom fabrication prior to delivery.
What industries in Canada commonly use fiberglass grating?
Common applications include wastewater treatment, mining, chemical processing, pharmaceutical manufacturing, pulp and paper facilities and municipal water treatment plants. These industries often choose fiberglass grating Canada products because of their corrosion resistance and low maintenance requirements.
How do I get a quote for FRP grating in Canada?
To request a quote, contact Access Industrial at (888) 557-0070 or sales@accessindustrial.com. Providing information about your application, dimensions, loading requirements and chemical exposure conditions will help the engineering team recommend the correct grating type, resin grade and panel configuration.
Source FRP or Fiberglass Grating in Canada: Get a Free Quote from Access Industrial
Whether you’re replacing aging steel grating, specifying a new industrial platform or planning a corrosion-resistant facility upgrade, Access Industrial can help you select the right FRP grating Canada solution for your application.
We offer in-stock inventory for fast turnaround, custom cutting and fabrication, comprehensive shop drawings, and engineering support to ensure your project is specified correctly from the start.
Call: (888) 557-0070
Email: sales@accessindustrial.com
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