PU PIR Metal Insulated Sandwich Wall Panel
PU/PIR metal insulated sandwich wall panels are widely used in building envelope systems. Among them, PIR (polyisocyanurate) not only offers superior thermal insulation but also demonstrates significant advantages over PUR (polyurethane) in terms of fire resistance, dimensional stability, mechanical strength, and production efficiency. By increasing the proportion of isocyanurate, introducing a stable cyclic molecular structure, and raising the isocyanurate index, Glostar has created a PIR product with an exceptionally dense structure. This process imparts greater stability to the internal rigid foam, as well as outstanding heat and fire resistance. Experimental data confirms that Glostar PIR sandwich panels can withstand short-term exposure to temperatures as high as 200°C and maintain stable performance during long-term exposure to 160°C.
Description
Glostar’s insulated wall panel is a rigid polyisocyanurate (PIR) foam core panel faced with pre-painted or galvanized steel sheets, engineered for exterior and interior wall cladding. As an insulated metal wall panel, it combines structural steel facing with a high-performance PIR/PU core — compared to standard PUR foam, PIR delivers superior fire resistance, dimensional stability, and mechanical strength, while maintaining the low thermal conductivity that reduces building energy consumption. Glostar’s insulated wall panels are produced with a higher isocyanurate index and a compact ring-molecule structure, allowing the rigid foam core to withstand short-term exposure up to 200°C and continuous exposure up to 160°C without losing structural integrity.
Why Choose Glostar Insulated Wall Panel?
Glostar’s insulated wall panels provide 30–50% higher insulation efficiency than traditional insulation materials such as glass wool, rock wool, or polystyrene. Different panel thicknesses correspond to different heat transfer coefficients, making this insulated metal wall panel suitable for environments requiring constant temperature control, such as cold storage, greenhouses, slaughterhouses, and livestock farms.
The PIR core carries a B1 fire rating with strong flame-retardant performance: the wall panel is difficult to ignite under direct flame or high heat, resists rapid flame spread, and self-extinguishes once the ignition source is removed.
Under identical vertical load conditions, panels of varying thickness can be selected to match different structural spans and design requirements, giving architects and contractors flexibility in project planning.
Allowable Vertical Load & Heat Transfer Coefficient
Allowable Deflection f ≤ L/200 | 0.5mm outer steel sheet, 0.4mm inner steel sheet
| Thickness (mm) | Heat Transfer Coefficient (W/m²K) | Weight (kg/m²) | Span @ 0.60 kN/m² (m) | Span @ 1.00 kN/m² (m) | Span @ 1.50 kN/m² (m) |
|---|---|---|---|---|---|
| 50 | 0.46 | 10.06 | 3.52 | 2.69 | 2.11 |
| 75 | 0.30 | 11.06 | 4.71 | 3.64 | 2.89 |
| 100 | 0.23 | 12.05 | 5.76 | 4.47 | 3.56 |
| 120 | 0.19 | 12.84 | 6.53 | 5.07 | 4.04 |
| 150 | 0.15 | 14.04 | 7.56 | 5.87 | 4.68 |
Advantages
Lightweight & High Strength
Easy to install and transport, with sufficient strength and stiffness to meet most building structural requirements.
Thermal Insulation
PIR core has extremely low thermal conductivity, cutting building energy consumption and heating/cooling costs.
Integral Structure
One-piece foam-and-steel structure avoids the gaps and leakage common in traditional built-up walls.
Green & Environmentally Friendly
Cyclopentane, fluorine-free foaming technology with no impact on the ozone layer or greenhouse effect.
Customized Service
Color, coating, and galvanizing customized to project-specific aesthetic and functional needs.
Unique Tongue-and-Groove Design
Enhanced wind resistance, waterproofing, insulation continuity, and corrosion resistance at every joint.
Properties of Glostar Insulated Wall Panel
Clients can select color, coating, and galvanizing based on project location, indoor use, and specific technical requirements.
| Color Range | Customized |
| Insulated Core | PIR |
| Coating | Polyester (PE), SMP, HDP, PVDF, etc. |
| Galvanizing | Hot-dip zinc, hot-dip Al-Zn, hot-dip Zn-Al-Mg |
| Recommended Steel Coil Suppliers | Baosteel, YIEH PHUI, BlueScope, etc. |
| Profile | Ripple, flat, square wave |
| Decorative Gap | Gapless, 10mm gap, 20mm gap |
Recommended Fastening Types
Type I — Concealed Fastening
Nails are hidden within the tongue-and-groove joint, giving better waterproofing and wind resistance.
- Exterior facing: Ripple/Square 0.45–0.7mm; Flat 0.6–0.8mm
- Interior facing: Square 0.4–0.7mm; Flat 0.5–0.7mm
- Effective width: 500–1200mm
- Thickness: 50 / 75 / 80 / 100 / 120 / 150mm
- Decorative gap: 0 / 10 / 20mm
Type II — Exposed Fastening
Nails are exposed to the environment. Requires more maintenance over time, but offers strong thermal continuity with minimal cold-bridge effect.
- Interior/exterior facing: Ripple/Square 0.4–0.8mm; Flat 0.5–0.8mm
- Effective width: 500–1230mm
- Thickness: 40 / 50 / 60 / 65 / 70 / 75 / 80 / 100 / 125 / 150 / 170mm
- Decorative gap: 0mm
Production Process
From decoiling to packaging, Glostar uses an automated, integrated production line. Strict process control at every stage ensures the finished insulated wall panel achieves high surface flatness and consistent core density.
Applications of PU/PIR Sandwich Panels
Packaging
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