Sandwich Panel Procurement Guide: Comparison of Three Core Materials

Selecting the right sandwich panel is a critical decision in industrial construction, influencing thermal efficiency, fire safety, and long-term ROI. To help you navigate the options, we have compiled this professional guide comparing the three most widely used core materials: Rock Wool, Polyurethane (PU/PIR), and Expanded Polystyrene (EPS).

1. Rock Wool Sandwich Panels —— The Fire Safety Champion

Made from volcanic rock, Rock Wool is the industry standard for fire resistance.

• Pros:
  • Class A Fire Rating: Non-combustible, making it mandatory for high-risk industrial facilities.
  • Sound Insulation: Excellent acoustic absorption properties.
• Cons: Higher density (heavier) and lower thermal resistance compared to PU.
• Best For: Chemical plants, public facilities, and fire-rated partitions.

2. Polyurethane (PU/PIR) Panels —— The Thermal Specialist

PU/PIR is widely regarded as the ultimate insulation material for modern energy-efficient buildings.

• Pros:
  • Superior Insulation: Offers the lowest thermal conductivity, significantly reducing heating and cooling costs.
  • High Strength: Excellent structural rigidity and superior airtightness.
• Cons: Higher initial investment cost.
• Best For: Cold storage, food processing plants, and energy-efficient high-end factories.

3. EPS Sandwich Panels —— The Economic Solution

EPS remains a popular choice for budget-conscious projects requiring basic insulation.

• Pros:
  • Cost-Effective: Provides the lowest price point per square meter.
  • Lightweight: Easy to handle and fast to install, reducing labor costs.
• Cons: Low fire resistance and susceptible to moisture if damaged.
• Best For: Temporary structures and general-purpose warehouses with basic fire codes.

The right choice depends on balancing local building codes, energy efficiency goals, and budget constraints.

We welcome you to choose our company for your comprehensive one-stop industrial construction solutions.