
Custom Fiberglass Grating Applications
Our custom fiberglass fabrication services can provide the ideal solution for companies in industries such as oil and gas, food and beverage, metals and mining, water and wastewater treatment and manufacturing. A few of the many applications include:
- Exposed flooring and decking
- Custom pedestrian bridges
- Custom boat docks
- Custom Crossover platforms
- Flooring for recreational and industrial situations
- Trench covers and drain covers
- Custom mezzanines and custom catwalk grating
- Ladders, ramps, and stairs
- Custom guardrail and handrail systems
- Handrails and FRP stair treads

Types of FRP Grating We Fabricate
- Molded and pultruded gratings
- Phenolic FRP grating is available in molded and pultruded variations
- Fiberglass structural shapes, also known as fiberglass structurals
- Fiberglass stair treads
- FRP Ladder systems
- Fiberglass handrail systems
- FRP accessories
Need Custom Fiberglass Grating? Send us your drawings or project specifications for a fast, accurate quote. Our team will work with you to ensure your fiberglass grating is fabricated to meet your exact requirements.
Our Fiberglass Grating Fabrication Capabilities
Fiberglass grating can be precisely fabricated to meet project-specific layouts, equipment clearances, and structural requirements. From simple panel sizing to complex modifications, each piece is fabricated to match drawings and installation conditions.

Cut-to-Size FRP Grating Panels
FRP grating panels are cut to exact dimensions to ensure proper fit within platforms, walkways, and structural framing systems. Clean, accurate cuts help maintain panel integrity while reducing installation time in the field.
Custom Circular and Irregular Cutouts

Grating panels can be fabricated with circular, square, or irregular cutouts to accommodate pipes, columns, drains, and equipment penetrations. These modifications are performed to align with field measurements or project drawings, ensuring a precise fit around obstructions.
Notching for Structural Supports
Notches are fabricated into FRP grating to allow panels to fit around beams, supports, and existing structures. This ensures proper panel placement without compromising load-bearing performance.
Edge Banding and Reinforcement
Cut and exposed edges can be banded to improve strength, safety, and durability. Edge banding helps maintain structural integrity and provides a more finished edge for high-traffic areas. Edge banding is standard practice for:
- Vinyl ester grating in chemical exposure environments
- Grating near washdown areas or submerged locations
- Stair treads where cut edges are exposed on the nosing side
- Notching and Custom Cutouts

Custom Fiberglass Grating Cutouts
Platform grating rarely installs without obstruction. Structural columns, pipe risers, equipment legs, drain sumps, and conduit runs all require cutouts in grating panels sized and positioned to your field layout. Marco fabricates these openings in-shop from your drawing dimensions or field measurements, eliminating time-consuming field cutting and the associated mess of fiberglass dust in a live environment. Common cutout types:
- Column and post penetrations (round and square)
- Pipe and conduit pass-throughs
- Equipment leg clearances
- Drain and sump openings
- Stairwell and hatch openings with returns
Panel Layout and Multi-Piece Assemblies
For larger areas or complex layouts, grating panels can be fabricated as part of a complete layout, including multiple panels designed to fit together. This approach simplifies installation and ensures consistent spacing and alignment.

Integration with FRP Structural Components
Fiberglass grating can be fabricated in conjunction with FRP structural shapes to create complete systems such as platforms, walkways, and crossover assemblies. This allows for a fully non-metallic solution in corrosive environments.
Custom Fiberglass Grating Stair Treads
We fabricate FRP stair treads from molded and pultruded grating stock in standard and custom widths, with gritted or concave nosing surfaces. Stair tread fabrication is available as a standalone service or as part of a complete FRP stair assembly.
FRP Custom Catwalk Grating
Choose from a variety of molded or pultruded FRP grating options with non-slip coating for a lightweight, durable alternative to steel catwalks.
Custom FRP Crossover Platforms
Our completely customizable FRP crossover platforms are built to withstand harsh environments and last for years to come.




Industry Applications that Benefit from Our FRP Fabrication

Fiberglass grating is widely used for platforms, walkways, and industrial flooring across a range of demanding environments.
- Fiberglass grating platforms and elevated work areas
- FRP walkways and access systems
- Fiberglass stair treads and crossover platforms
- Aerospace
- Wastewater treatment facility grating
- Chemical processing plant flooring
- Oil & gas and petrochemical applications
- Offshore and marine environments
Why Choose Marco Specialty Steel for Your Custom FRP Project
Our Customer Service Is the Best in the Industry
Marco Specialty Steel combines extensive inventory with precision fabrication to deliver fast, accurate solutions.
- Large inventory of fiberglass grating products ready for fabrication
- Custom fabrication based on drawings and project specifications
- Experience supporting industrial, petrochemical, and commercial projects
- 24/7 rush service available for urgent requirements
Whether for planned installations or unexpected needs, we provide dependable turnaround when it matters most.

Learn More About Our Custom Fiberglass Fabrication Services
Set your custom fiberglass grating project in motion right now by contacting our friendly, knowledgeable technical sales staff. We’ll be happy to discuss your specific customization needs. We can also provide a no-obligation project quote.
Marco Specialty Steel: Quality. Speed. Reliability.
Frequently Asked Questions About Fiberglass Grating (FRP) Fabrication
Below are some of the most common questions we receive about our custom FRP fabrication services.
Can fiberglass grating be cut to size or fabricated to custom dimensions?
Yes. Fiberglass grating can be cut to size and fabricated to match exact project dimensions. Panels are modified to fit platforms, walkways, and structural layouts, ensuring proper fit and efficient installation.
What fiberglass grating fabrication services does Marco Specialty Steel offer?
Marco Specialty Steel provides custom fiberglass grating fabrication including cut-to-size panels, circular and irregular cutouts, notching, edge banding, and panel layout for multi-piece assemblies. Fabrication is performed to match project drawings and specifications.
What types of modifications can be made to FRP grating panels?
FRP grating panels can be modified with cutouts, notches, and custom sizing for specific layouts. These modifications allow grating to fit complex field conditions.
Do you have different procedures when fabricating molded and pultruded grating?
Yes. Molded and pultruded fiberglass grating require different fabrication approaches due to their construction. Molded grating allows for more flexibility in cutouts, while pultruded grating is directionally stronger and requires more precise cutting to maintain structural integrity.
What is the difference between fiberglass grating fabrication vs manufacturing?
Manufacturing refers to producing the fiberglass grating itself (molded or pultruded), while fabrication involves modifying finished grating panels to meet project-specific requirements such as sizing, cutouts, and layout. Marco Specialty Steel focuses on fabrication, not manufacturing.
Do you fabricate fiberglass grating based on CAD drawings or project specifications?
Yes. Fiberglass grating can be fabricated directly from CAD drawings, engineering plans, or project specifications. This ensures each panel is produced to the exact dimensions and requirements needed for installation.
Can I supply the grating for you to fabricate?
No. Marco Specialty Steel supplies and fabricates fiberglass grating to ensure material quality, consistency, and compatibility with fabrication processes. This approach helps maintain accuracy and overall project performance.
Can FRP stair treads be customized with specific dimensions or nosing options?
Yes. FRP stair treads can be fabricated to specific widths, lengths, and configurations, including various nosing options for added visibility and slip resistance. Customization ensures compliance with project and safety requirements.
Do you provide clips or hardware with fabricated grating?
Yes. Clips and mounting hardware are available to properly secure fiberglass grating panels during installation. Hardware selection depends on the application and supporting structure.
What is the typical turnaround time for custom fiberglass grating fabrication?
Turnaround time depends on project size, complexity, and material availability. Standard fabrication projects are completed efficiently, and expedited or rush service is available when required for urgent needs.


