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Insulated PIR PU Sandwich Roof Panel Manufacturer for Cleanroom & Cold Room
Glostar is a leading Insulated PIR PU Sandwich Panel manufacturer in China, providing high-performance polyurethane insulated wall and roof panels for industrial buildings, cold storage and commercial projects worldwide. Glostar PIR PU sandwich panels feature an exceptionally low thermal conductivity. This is complemented by a sophisticated and well-engineered interlocking mechanism, along with a meticulously designed installation node system, ensuring the airtightness and thermal insulation efficiency of the entire cold storage facility. Experimental results demonstrate that the thermal insulation performance of a 3.5 cm thick polyurethane panel is approximately equivalent to that of a 1-meter thick concrete wall.
- Overview
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Product details
- ✓Continuous double-belt lamination line — factory-controlled adhesion quality across the full panel width; no voids or delamination risk from batch production.
- ✓Full system supply — panels, matched flashings, corners, sill trims, and fixings supplied as a complete system; no coordination gaps between panel and accessories suppliers.
- ✓Dual-core capability — manufacture both PIR and PU cores on the same line, allowing mixed-core projects (e.g., PIR for fire-rated zones, PU for general areas) in a single order.
- ✓Custom length to order — panels cut to your exact required lengths at the factory, minimising on-site waste and reducing installation time.
- ✓Export packaging & logistics support — panels packed and strapped for sea or road freight; export documentation including material test reports, CE/product certificates available.
- ✓Technical drawings on request — panel layout drawings, node/junction details, and load-span tables available for your structural engineer's reference.
PIR (Polyisocyanurate) and PU (Polyurethane) sandwich panels consist of two profiled steel face sheets bonded to a rigid foam core, formed in a continuous double-belt lamination process. The result is a lightweight, structurally self-supporting enclosure panel with industry-leading thermal resistance and a factory-finished surface ready for immediate installation.
PIR core panels offer an enhanced fire class versus standard PU, making them the preferred choice for pharmaceutical GMP facilities, cold-chain logistics, cleanrooms, and any application subject to fire-safety regulations. PU core panels deliver the same thermal efficiency at a more accessible cost point, suitable for general industrial and commercial buildings.
| Property | PIR Core | PU Core |
|---|---|---|
| Fire Class | B1 | B2 |
| Thermal Conductivity λ | ≤ 0.022 W/(m·K) | ≤ 0.024 W/(m·K) |
| Core Density | 40–48 kg/m³ | 38–45 kg/m³ |
| Operating Temp Range | –50 °C to +120 °C | –50 °C to +100 °C |
| Dimensional Stability | Superior | Good |
| Recommended Use | Pharma GMP, cleanroom, cold storage, high fire-code projects | General industrial, commercial warehousing, cost-sensitive projects |
| Relative Cost | Moderate premium over PU | Standard |
PIR foam achieves a thermal conductivity λ ≤ 0.022 W/(m·K) — the lowest of any rigid foam insulation material in common construction use. A 100 mm PIR panel delivers the same thermal resistance as 180 mm of mineral wool, significantly reducing the required panel thickness and building footprint.
Concealed screw fastening, achieved through the use of capping covers, ensures superior waterproofing and enhances the architectural aesthetic;
The high-wave crest design enhances the load-bearing capacity of the panel surface while simultaneously facilitating water drainage;The unique wave-crest profile design provides a reliable connection method for securing photovoltaic panels.
The continuous foam core with sealed tongue-and-groove or ship-lap joints provides inherent air tightness and acts as a vapour retarder, reducing condensation risk within the panel assembly. Critical for cold storage, cleanroom, and controlled-atmosphere environments where moisture control is essential.
All panels are produced with cyclopentane-blown or HFO-blown PIR/PU foam. Suitable for projects with environmental certification requirements.
Factory-finished panels with integrated interlocking joints arrive on site ready to fix — no wet trades, no drying time, no on-site insulation application. A two-person team can typically install 200–300 m² of wall panel per day, significantly compressing construction programmes versus traditional build-up systems.
| Option | Description | Typical Use |
|---|---|---|
| Pre-Painted Galvanised Steel | 0.4–0.6 mm G550 galvanised, polyester or PVDF coating, wide RAL range | General industrial, warehousing, commercial |
| Aluminium-Zinc Steel | AZ150 coating, superior cut-edge corrosion resistance, unpainted or coated | Coastal, high-humidity, Middle East harsh climate |
| PVDF High-Durability Coating | Kynar 500® or equivalent, 25-year chalk/fade warranty, UV resistant | Façade / architectural; desert & high-UV environments |
| Stainless Steel Face | 304 or 316L SS, 0.5 mm, mirror or 2B finish | Pharmaceutical GMP, food processing, cleanroom |
| Anti-Static / ESD Coating | Surface resistivity 10⁶–10⁹ Ω, custom colour | Electronics manufacturing, semiconductor cleanrooms |
| Core Material | PIR (Polyisocyanurate) or PU (Polyurethane) |
| Core Density | 40–48 kg/m³ (PIR) / 38–45 kg/m³ (PU) |
| Thermal Conductivity λ | ≤ 0.022 W/(m·K) PIR / ≤ 0.024 W/(m·K) PU |
| Available Thickness | 50 / 75 / 100 / 120 / 150 mm (custom available) |
| Panel Width | 1000 mm / 1200 mm (standard); custom widths on request |
| Max Panel Length | Up to 12 000 mm |
| Face Sheet Thickness | 0.4 mm / 0.5 mm / 0.6 mm (outer & inner, can differ) |
| Fire Classification | PIR: Class B1 (DIN 4102) / PU: Class B2 (DIN 4102); BS 476 Pt 7 Class 1 surface spread of flame on request |
| Operating Temperature | –50 °C to +120 °C (PIR) / –50 °C to +100 °C (PU) |
| Joint Type | Tongue & groove |
| Compressive Strength | ≥ 120 kPa (at 10% deformation, per EN 826) |
| Certification / Standards | EN 14509 (European standard for sandwich panels); factory ISO 9001:2015 |
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