Fiberglass Reinforced Plastic (FRP) grating—also referred to as fiberglass grating—is a resin-fiberglass composite material used for the surfaces of walkways, stairs, platforms and other load-bearing structures. It is available in pultruded and molded forms, both of which can be customized to meet specific performance and safety requirements.
At Creative Composites Group, we supply both molded and pultruded FRP gratings.
Pultruded fiberglass gratings are fabricated from corrosion-resistant I- or T- bars that are connected and secured through a unique notch and groove bar system. They are suitable for applications that require high strength and stiffness. Molded fiberglass gratings are molded and cured into the desired shape. They are ideal for structures that need extensive fabrication and cutting as well as applications that involve corrosive compounds or require a large open area.
The process of making molded fiberglass gratings begins with layering liquid resin and glass fibers inside of a rigid, open, and heated mold. This step continues until the desired thickness and dimensions are achieved. Afterward, the filled mold is placed aside to cure. When the resin-fiberglass layers have fully cured, the component is extracted from the mold, and the mold is cleaned and prepared for reuse.
FRP gratings are well-suited for highly corrosive environments or applications involving commercial and architectural applications. Typical uses include:
Creative Composites Group’s Supergrate® Molded Grating is available in:
Special resins, colors, and lengths are available upon request.
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Pultruded Fiberglass GratingsThe fiberglass pultrusion process utilizes a caterpillar-like machine to pull the fiberglass material through the various steps. First, fiberglass strands are guided into parallel bundles that run across the length of the component. Then, fiberglass mat is added to provide multidirectional reinforcement. Next, resin is applied to the fiberglass materials, and a surface veil is wrapped around the entire assembly. Afterward, the composite is pulled through a heated die, which cures it. Finally, the cured material is cut to the desired lengths with a cut-off saw, and the individual bars are assembled to form grating panels.
Pultruded fiberglass grating has similar characteristics to molded fiberglass grating, including:
However, the pultrusion process itself provides additional advantages, such as:
Due to its higher fiberglass concentration, pultruded fiberglass grating is the ideal choice for applications where strength and stiffness are prioritized over flexibility and ergonomics. Typical uses include:
Creative Composites Group’s Supergrate® Pultruded Grating is available in:
Special resins, colors, and lengths are available upon request. LEARN MORE >>
We also offer custom-designed fiberglass-reinforced polymer trench covers. The water ingress openings can be tailored to meet customer application, flow rate, and code requirements. The hold-down requirements can be customized to suit the particular trench type. The top surface features an integrated texture that meets ADA and OSHA slip requirements. The resin options available include:
