Livestock & Pigeon FRP Floor Grating
Hygienic fiberglass slatted floors for poultry, pigeon and livestock houses
Why Poultry & Pigeon Houses Use FRP Floor Grating
Livestock and pigeon houses see constant ammonia (NH₃), moisture, feed acid and manure cleaning. Concrete floors crack and hold bacteria; steel slats rust. FRP floor grating in isophthalic resin resists ammonia and manure acid, is smooth and easy to disinfect, and has no sharp edges that injure birds. Standard slot widths 18/22/26 mm for different stock sizes.
Livestock Floor Specs
| Application | Slot width | Panel |
|---|---|---|
| Pigeon | 18 mm | #25 molded |
| Poultry (chicken) | 22 mm | #25 molded |
| Livestock (pig) | 26 mm | #38 molded |
Livestock FRP Floor Design
Slatted floors for poultry, pigeon and livestock must (1) allow manure to fall through, (2) be smooth and non-abrasive to animal feet, (3) resist ammonia (NH₃) and manure acid, (4) be easy to disinfect. FRP molded panels in isophthalic resin are ideal. Slot width selected by animal size: pigeon 18 mm, chicken 22 mm, pig 26 mm. Panel thickness #25 for light poultry, #38 for heavier livestock.
Slot selection
| Animal | Slot mm | Panel | Span |
|---|---|---|---|
| Pigeon | 18 | #25 | 600 mm |
| Chicken | 22 | #25 | 600 mm |
| Pig (finisher) | 26 | #38 | 500 mm |
Livestock Floor FAQ
Is FRP hygienic for poultry?
Yes. Smooth surface, no pores, disinfectable with 10% bleach. No bacteria harboring cracks like concrete.
Will ammonia degrade it?
Isophthalic resin is rated for NH₃ up to 100 ppm, typical in poultry houses. 15+ year life.
Can it be walked on by service staff?
Yes. #38 molded carries 5 kN/m². Personnel can access on the slats.
Why FRP Slats Are Better for Animals
Concrete slats are rough, cold in winter, and harbor bacteria in pores. Cast iron slats rust and have sharp edges that damage poultry feet. FRP slats have smooth rounded edges, warm underfoot (thermal mass low), non-porous (easy to disinfect), and uniform slot width that prevents leg injuries. Pigeon breeders report 15% lower foot pad lesions with FRP vs concrete.
Installation
Slats span across steel or FRP support beams at 500–600 mm spacing. Panels are laid loose (no fixing needed) and weigh 9 kg/m² — easy to lift for cleaning under the slatted floor. Manure falls through the slots into a pit below, removed by scraping or flushing.
Why Engineers Choose GRP Over Steel
Glass-fiber reinforced polymer (GRP / FRP) grating has become the default choice for industrial walkways, platforms and trench covers. The reason is not aesthetics — it is total cost of ownership. Painted steel grating requires scraping and repainting every 3–5 years in chemical and marine environments. Galvanized steel lasts 10–15 years before corrosion attacks the bars. Aluminum corrodes in alkaline washdown areas. Stainless 316 is the only comparable metal, but at 3× the cost of vinylester GRP and still prone to pitting at the waterline.
FRP does not rust, does not need painting, and carries a 25-year design life. It is 70% lighter than steel, which reduces the structural steel subframe, lowers shipping cost, and makes manual installation feasible without heavy equipment. It is non-sparking and non-conductive, which is why it dominates refinery, offshore and substation applications. It also has a lower coefficient of thermal conductivity than aluminum, so barefoot areas stay cool in sunlight.
Total cost of ownership comparison
| Cost item (25 years) | Painted steel | 316 stainless | Vinylester GRP |
|---|---|---|---|
| Initial material | $25/m² | $120/m² | $45/m² |
| Repainting (every 4 yr) | $60/m² | $0 | $0 |
| Replacement (15 yr) | $25/m² | $0 | $0 |
| Subframe (lighter deck) | $30/m² | $30/m² | $18/m² |
| 25-year TCO | $140/m² | $150/m² | $63/m² |
The numbers tell the story: vinylester GRP is 55% lower total cost than either steel or stainless over a 25-year horizon. Add the safety benefits (non-sparking, non-conductive, anti-slip wet), and the engineering case is clear.
How to Order: Specify, Draw, Deliver
We accept orders in three formats. (1) Standard catalog panels: 1220×3660 mm, thickness 25/38/50 mm, shipped as-is. (2) Cut-to-size panels: send us a drawing with dimensions and cutouts, we fabricate to ±3 mm tolerance. (3) Complete engineered package: we calculate loads, detail the subframe, produce assembly drawings, ship a numbered kit with all clips, bolts and handrail components. Typical lead time: 10 working days for standard panels, 20 working days for engineered packages.
What we need for a quote
- Application (walkway / platform / trench / pool / dock, etc.)
- Expected loads (pedestrian / trolley / vehicle)
- Span between supports
- Chemicals present (concentration and temperature)
- Color requirement (standard gray / custom RAL)
- Quantity in m²
Send us the spec and a hand sketch — we return a technical proposal with panel schedule, load table, and price within 48 hours. See our molded grating and pultruded grating product pages for detailed specs.
Installation and Lifetime Maintenance
FRP grating is famously low-maintenance. But "low maintenance" does not mean "no maintenance". For a 25-year service life, we recommend the following inspection schedule. Annual visual inspection: walk every 12 months, look for broken bars, missing clips, UV chalk on the top surface. Clips: re-torque every 3 years — thermal cycling loosens bolts slightly. Cleaning: wash with high-pressure water 200 bar; for chemical residue, use pH-neutral detergent. Do not use solvent-based cleaners on the gel coat — they can craze the surface.
UV chalk: after 8–10 years outdoors, the gel coat may show faint surface chalk. This is normal and does not affect structural strength. If appearance matters, apply a coat of UV-stabilized clear gel coat, available from us as a touch-up kit. Repairs: a broken bar can be spliced with a FRP repair kit (resin + mat) in 30 minutes; the panel remains in service. Full panel replacement takes 15 minutes for two workers — no hot work, no welding.
Safety in installation
Cutting FRP generates dust. Wear P100 respirator, eye protection, gloves. Dust is silica-glass, not toxic but irritates lungs. Wet cutting suppresses dust. Do not cut near open flame — resin is combustible, though self-extinguishing per ASTM E84.
Technical Specifications and Standards
Our GRP grating is manufactured under ISO 9001 quality system. Every batch is tested for flexural strength (ASTM E1310), water absorption (ASTM D570, <0.5%), bar size tolerance (±0.5 mm), and resin content (65–70% by weight). Fire performance per ASTM E84 Class A. Thermal stability per ISO 75 HDT (load deflection temperature) — 180 °C for vinylester. UV aging per ASTM G154 (1000 hours QUV) —>70% retained strength.
| Standard | Scope |
|---|---|
| BS 4592 Part 4 | GRP grating specifications |
| EN ISO 14122-2/3 | Permanent access to machinery |
| ASTM E84 | Surface burning characteristics |
| ASTM E1310 | FRP grating test method |
| ASTM G154 | UV fluorescent aging |
| ISO 75 | Heat deflection temperature |
See also FRP grating clips, FRP grating covers, and FRP structural profiles for complementary products.
Choosing the Right GRP Panel
When specifying GRP grating for a new project, three variables dominate: panel thickness, resin type, and surface finish. Thickness carries the load. Resin determines chemical and temperature resistance. Surface finish determines slip resistance. Get these three right and the rest follows.
Panel thickness guide
| Panel | Weight | Typical span | Use |
|---|---|---|---|
| #25 molded | 9 kg/m² | 600 mm | Light walkway, solar, tree grate |
| #38 molded | 14 kg/m² | 900 mm | Standard industrial platform |
| #50 molded | 22 kg/m² | 1200 mm | Cart traffic, heavy duty |
| I 40 pultruded | 8 kg/m² | 900 mm | High load, light weight |
| I 50 pultruded | 12 kg/m² | 1200 mm | Long span, trolley |
| I 75 pultruded | 18 kg/m² | 1800 mm | Heavy, equipment access |
Resin selection
Isophthalic is the default for atmospheric and light chemical service. Vinylester for marine, chemical splash, hot water. Phenolic for high temperature and low-smoke requirements. We provide a chemical resistance chart for 200+ chemicals on request — if your media is not listed, send us the concentration and temperature, and our engineering team will recommend the right resin.
Surface finish
Smooth top for indoor dry areas. Carborundum grit (aluminum oxide F24) for wet and slip-prone areas. Double grit (top and bottom) for marine and washdown. The grit is cast into the gel coat, not glued on — it will not peel.
About ZeAllgrate Manufacturing
ZeAllgrate is a China-based manufacturer of FRP / GRP grating since 2008. Our 15,000 m² factory produces 80,000 m² of molded and pultruded grating annually. We export to 40+ countries: Europe, North America, Middle East, Southeast Asia. Every batch is ISO 9001 certified, ASTM E84 tested, and ships with Mill Test Certificate. Our engineering team supports your spec from sketch to installation drawing.
We are not a trading company — we are the factory. That means direct pricing, fast lead time (10 days for standard panels), and technical support from the people who made the product. Contact our engineering team for your next FRP project.