Buildgram PIR/PU cold storage panels are high-performance insulation panels designed for cold room walls, ceilings, and floors. Adopting a sandwich structure with double-layer protective skins and high-density PIR (Polyisocyanurate) or PU (Polyurethane) insulation core, these panels offer excellent thermal insulation, waterproofing, and fire-resistant properties.

The seamless tongue-and-groove connection design eliminates cold bridges and minimizes energy loss, ensuring stable temperature control. While PU panels provide cost-effectiveness for general projects, PIR panels boast superior fire resistance and long-term thermal stability for high-demand scenarios.

Parameter	Specification
Product Type	PIR Cold Storage Panels, PU Cold Storage Panels
Panel Structure	Sandwich structure: Double-layer protective skin + PIR/PU insulation core; Tongue-and-groove connection (eliminates cold bridges)
Protective Skin	Galvanized steel, color steel, embossed aluminum or 304 stainless steel; Thickness: 0.4-0.8mm; PVDF/polyester coating optional
Insulation Core	PU: Density 40-43 kg/m³, Thermal conductivity ≤0.023 W/m·K PIR: Density 45-50 kg/m³, Thermal conductivity ≤0.020 W/m·K; CFC-free, eco-friendly
Panel Thickness	50mm, 75mm, 100mm, 125mm, 150mm, 200mm (Customizable from -40℃ to +18℃)
Dimensions	Width: 1105mm (standard); Length: ≤36m (customizable)
Fire Rating	PU: B1 grade; PIR: B1/A- grade (flame-retardant, low smoke emission)
Temperature Range	PU: -185℃~120℃; PIR: -196℃~160℃
Service Life	≥15 years (PU); ≥20 years (PIR) with proper maintenance

• 1. Superior Thermal Insulation & Energy Saving: High-density closed-cell core minimizes heat transfer. Reduces refrigeration costs by 20-30% compared to traditional materials.
• 2. Excellent Fire & Waterproof Performance: PIR panels achieve B1/A- fire rating with low smoke. Both panels are waterproof, ensuring safety in humid environments.
• 3. Seamless Installation & Durability: Tongue-and-groove design prevents cold leakage. Anti-corrosion coating ensures long service life (≥15 years for PU, ≥20 years for PIR).
• 4. Flexible Customization: Tailored thickness, dimensions, and skin materials to meet specific project requirements (-40℃ to +18℃).

Q1: What's the difference between PIR and PU panels?
PU Panels: Offer excellent cost-effectiveness and mature performance, ideal for general food fresh-keeping warehouses.
PIR Panels: Provide superior fire resistance (B1/A- grade) and long-term thermal stability. Recommended for pharmaceutical cold storage and high-demand logistics parks.

Q2: How do these panels prevent "cold bridges"?
Our panels feature a unique tongue-and-groove connection design. This seamless joint eliminates gaps between panels, preventing air leakage and thermal conduction, thus completely removing cold bridges and minimizing energy loss.

Q3: What are the standard dimensions and fire ratings?
Dimensions: Standard width is 1105mm; Length can be customized up to 36m.
Fire Ratings: PU panels are B1 grade; PIR panels are B1/A- grade, featuring flame retardancy and low smoke emission.

Q4: Can the panels be customized for specific projects?
Absolutely. We offer full customization services. You can specify the panel thickness (50mm-200mm), dimensions, protective skin material (e.g., stainless steel, color steel), and coating based on your temperature requirements and project scenario.