Aquaculture panels are insulated sandwich panels engineered for fish farms, hatcheries, and recirculating aquaculture systems (RAS) where the interior atmosphere is saturated with water vapor, dissolved salts, and biological acids that corrode standard steel cladding within two to three years. The inner skin uses white fiberglass-reinforced polyester (FRP), a non-porous thermoset surface that does not rust, pit, or delaminate under continuous salt-laden humidity.
The PU foam core provides continuous thermal insulation that holds the enclosure at the stable 22-28°C range required for tilapia, eel, and shrimp metabolism and feed conversion. Panels join through camlock or tongue-and-groove profiles sealed with polyurethane adhesive, creating a water-tight envelope that prevents condensation within the core and blocks the moisture migration that would otherwise degrade insulation performance in an environment where relative humidity routinely exceeds 85%.
Standard thickness is 50mm for fish farming enclosures and indoor pools, with 30mm and 40mm options for partition walls in milder climates. Panels are manufactured in a useful width of 1,000mm and custom lengths up to 16,000mm. The smooth white FRP surface increases interior light reflectance to reduce artificial lighting costs and withstands the pressurized water and detergent disinfection required between production cycles for biosecurity compliance.
Your Trusted Manufacturer for Aquaculture Panel
RaxPanel manufactures aquaculture panels in Hebei, China, where the white FRP inner skin is laid up with controlled resin-to-glass ratio and cured under heat before bonding to the foam core. Resin content is verified by burn-off test on sample coupons from each production lot because under-resinated FRP develops micro-cracks within months of exposure to salt spray and the acidic metabolites generated in intensive fish farming.
The production line has operated for since 2002 with a daily capacity of 1,700 m², supplying aquaculture-grade panels to fish farm projects in more than 30 countries. Camlock joint hardware is torque-checked at assembly, and each panel undergoes a visual inspection for skin-to-core delamination before packing. Panels are crated with protective film on both faces to prevent surface scoring during container transit to coastal and inland farm sites. Contact us with your RAS layout, species, and ambient climate data, and we will confirm panel thickness, joint type, and framing specification.
- White FRP inner skin non-porous to salt spray, ammonia, and corrosive farm acids.
- PU foam core at 40 kg/m³ with thermal conductivity of 0.022 W/(m·K).
- 30-50mm thickness maintaining 22-28°C water-side temperatures for sensitive species.
- Camlock or tongue-and-groove joints with PU adhesive for water-tight sealing.
| Parámetro | Valor |
|---|---|
| Material del revestimiento | FRP inner / Pre-painted Galvanized Steel outer |
| Espesor de Chapa | Outer: 0.4-0.7 mm; FRP inner sheet |
| Material del Núcleo | PU foam / PIR foam |
| Densidad del núcleo | 40 kg/m³ |
| Thermal Conductivity | 0.022 W/(m·K) |
| Rango de Espesor | 30-50 mm (standard: 50 mm) |
| Useful Width | 1,000 mm |
| Longitud Máxima | Up to 16,000 mm |
| Internal Temperature | Maintains 22°C to 28°C |
| Sistema de Junta | Camlock / tongue-and-groove with PU adhesive |
| Resistencia al Fuego | B1 (PIR) per EN 13501-1 |
| Corrosion Resistance | FRP inert to ammonia and salt spray |
| Light Reflectance | White FRP surface, high interior reflectance |
| Framing | Q355B hot-dip galvanized, >600 g/m² zinc |
| Service Life | 25-30 years |
| Aplicaciones | RAS, hatcheries, indoor fish and shrimp farms |
Aquaculture Panel Buying Guide & FAQ
Aquaculture buildings combine three of the harshest conditions a panel can face: constant humidity, warm process air, and, in marine operations, salt-laden atmosphere. Standard cladding corrodes and wets out quickly in this environment, so the facing, core, and joints all have to be chosen for moisture and salt resistance. The guide below covers the decisions hatchery, farm, and processing-plant builders make when specifying insulated panels for aquaculture.
Pro Tip: Specify the Core for Wet Service, Not Just the Facing
A corrosion-resistant skin only works if the core behind it stays dry. Choose a closed-cell PU core with water absorption below 1% so that any moisture reaching a joint or fixing does not wick through the panel, add weight, and collapse the insulating value over time.
A corrosion-resistant skin only works if the core behind it stays dry. Choose a closed-cell PU core with water absorption below 1% so that any moisture reaching a joint or fixing does not wick through the panel, add weight, and collapse the insulating value over time.
1. What makes the aquaculture environment so demanding?
Tank rooms, hatcheries, and processing halls run at high humidity and often elevated temperature, and marine sites add airborne salt. Together these accelerate corrosion of metal facings and drive condensation onto any surface below the dew point. The result, with ordinary materials, is rusting cladding, dripping ceilings, and a core that soaks up water. Panels for this sector are engineered against all three failure modes at once.
2. Which facing suits freshwater versus marine exposure?
The facing is chosen to match the actual corrosivity of the site rather than over-specifying across the board. The table maps common aquaculture settings to facing choices.
3. How does the core hold its insulating value in constant humidity?
A closed-cell PU core of 40–45 kg/m³ density has a thermal conductivity of about 0.022–0.024 W/(m·K) and water absorption below 1%, so it does not take on moisture from the humid air around it. That matters because a core that absorbs water gains weight, loses insulation performance, and can corrode the skins from the inside. Low water absorption is what lets the panel keep its declared U-value year after year in a wet building.
Why closed-cell content matters
Closed-cell content above 92% is the practical threshold for wet service. Below that, the foam has connected pores that can draw moisture through by capillary action, defeating even a good facing. Confirm the closed-cell figure on the datasheet, not just the density.
Closed-cell content above 92% is the practical threshold for wet service. Below that, the foam has connected pores that can draw moisture through by capillary action, defeating even a good facing. Confirm the closed-cell figure on the datasheet, not just the density.
4. How do panels support hygiene and HACCP cleaning?
Seafood processing and hatchery biosecurity demand surfaces that can be washed and disinfected without degrading. Smooth, non-porous stainless or coated faces with sealed, flush joints leave no ledges where organic matter and bacteria could collect, and they tolerate the detergents and sanitizers used in HACCP regimes. Coved junctions between wall and floor panels make the cleaning cycle faster and more complete.
5. What should I check for temperature stability of the stock?
Fish and shellfish are sensitive to temperature swings, so the building envelope has to hold a steady interior condition with minimal energy. A well-insulated, airtight panel envelope reduces the heating or cooling load and dampens the daily temperature variation that stresses stock. For chilled processing rooms, the same panels can be specified at greater core thickness to hold the lower design temperature.
Frequently Asked Questions
Why do aquaculture buildings need special panels?
Fish and shellfish facilities run warm, humid, and often salty, which corrodes ordinary cladding and drives condensation everywhere. Panels built for this environment use corrosion-resistant facings and a closed-cell core that does not absorb the moisture, so the building stays sound and the interior stays controllable.
Which facing resists saltwater and humid air best?
For inland freshwater farms, a high-build polyester or epoxy-coated galvanized steel facing is usually sufficient. For marine hatcheries and coastal processing plants exposed to salt spray, stainless steel — AISI 316 in the most aggressive zones — gives the longest service life.
How do panels help hold water and air temperature?
A closed-cell PU core of 40–45 kg/m³ has very low water absorption and a thermal conductivity around 0.022–0.024 W/(m·K), so it holds its insulating value even in constant humidity. That stability keeps tank rooms and hatcheries at the set temperature with less energy and protects stock from swings.
Can the panels meet hygiene and HACCP requirements?
Yes. Smooth, non-porous stainless or coated faces with sealed, flush joints can be washed and disinfected down, leaving no ledges where organic matter collects. This supports the HACCP cleaning regimes required in seafood processing and the biosecurity routines used in hatcheries.
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