Fiberglass grating for walkways, platforms, stair treads, and trench covers in corrosive and electrically sensitive environments — engineered and made in the USA.
The problem with steel and aluminum grating
- Corrodes in wet, coastal, chemical, and washdown areas — then the recoat-and-replace cycle begins.
- Conducts electricity — a shock and arc-flash hazard around energized equipment.
- Heavy — cranes, more crew, longer outages to install or swap.
- Becomes a slip hazard as coatings wear.
The Crimar FRP solution
- Non-conductive & RF-transparent — safe around energized equipment.
- Corrosion-proof — immune to chlorides, acids, alkalis, and H2S.
- Slip-resistant — gritted anti-slip surface standard.
- ~1/4 the weight of steel — faster, safer installs.
- Molded & pultruded options for panels or long/heavy spans.
- Virtually maintenance-free — no paint, no galvanizing, no replacement cycle.
Crimar molded FRP grating is built from continuous fiberglass roving and a choice of five thermosetting resin systems — all with a UV inhibitor, with a concave anti-slip top surface and bi-directional load-bearing bars for strength in both directions.
Standard grating (representative)
| Spec | Typical |
|---|---|
| Mesh | 1-1/2″ × 1-1/2″ (38 × 38 mm) |
| Panel depths | 1″, 1-1/2″, 2″ |
| Panel sizes | 3’×10’, 4’×12’, 1 m × 4 m |
| Open area | ~60–70% |
| Surface | Concave or gritted anti-slip |
| Resin | Isophthalic polyester, vinyl-ester, or fire-retardant (all non-conductive) |
What we supply
- Molded grating (bi-directional) and pultruded grating (long spans/heavy loads)
- Depths 1″, 1.5″, 2″; multiple mesh sizes; gritted or concave surfaces
- Panels, stair treads, trench & cable-trench covers
- Hold-down clips, fabrication, and cut-to-size
See FRP Grating specs & options →
Lower total cost of ownership
| Over 25 years (illustrative) | Steel / metal | Crimar FRP |
|---|---|---|
| Re-coating / galvanizing | Every ~5–7 yrs | None |
| Replacement over 25 yrs | 2–3× | 0 — installs once |
| Conductivity | Conductive (hazard) | Non-conductive |
| 25-yr total cost | Higher | Lower |
One avoided corrosion failure, shock incident, or unplanned outage can outweigh the entire material premium. You are not just buying a product — you are eliminating a failure mode.
Why Crimar Composites
Crimar Composites is the pultrusion arm of the Crimar group, serving industrial clients since 1988. We back our FRP with US-based engineering and customer support and manufacturing in Los Angeles, USA — so we can take you from standard stock to custom fabrication, and help you spec the right resin and section for your environment.
Get a fast quote
Send us your application — environment, sizes/loads, and quantities — and our US-based team will help you spec the right FRP and send a quote.
FRP grating in the field
Frequently Asked Questions
Is FRP grating electrically conductive?
No. It is non-conductive and RF-transparent, which is why it is specified on platforms and walkways around energized equipment and in substations.
What depths and sizes are available?
Molded and pultruded grating in 1″, 1.5″, and 2″ depths with multiple mesh patterns; panels, stair treads, and trench covers, cut to size. Request a datasheet for load/span tables.
Molded or pultruded — which do I need?
Molded grating is bi-directional and ideal for corrosion and moderate spans; pultruded grating carries higher unidirectional and point loads over long spans. We’ll help you choose.
Is it fire-rated?
Fire-retardant (FR) resin grades meeting ASTM E84 Class 1 flame spread are available for enclosed or code-driven areas.
TCO figures are illustrative and depend on your site and duty. Product values are representative — request a datasheet for certified data. Made in USA.
