Curtain wall panels are insulated aluminum-faced sandwich panel systems engineered for high-rise facades and public building envelopes, combining decorative finish with thermal and fire performance. The outer skins use PVDF-coated aluminum face sheets at 1.5-3mm thickness in 3003 or 5005 alloy, delivering superior weather resistance and color stability for demanding architectural curtain wall applications.
The non-combustible rock wool core delivers exceptional thermal insulation with a density of 100-150 kg/m³ and thermal conductivity of 0.040-0.045 W/(m·K), achieving U-values as low as 0.32 W/m²·K for energy-efficient envelopes. The lamella mineral wool construction ensures consistent thermal performance while providing acoustic attenuation and dimensional stability across large-format facade panels.
Standard panel thickness ranges from 50mm to 120mm, with 50mm, 80mm, and 100mm as the most common configurations for different fire resistance requirements. Panels are available in widths up to 2,000mm and custom lengths up to 8,000mm, joined by socket-and-plug interlocking profiles with pre-embedded sealant strips to eliminate thermal bridging and air infiltration.
These insulated panels serve high-rise office towers, commercial complexes, hospitals, airports, and landmark public buildings. They achieve A2-s1,d0 fire classification per EN 13501-1 with fire resistance ratings from EI30 to EI240 depending on thickness, and Grade 9 wind load resistance per GB/T 15227, withstanding typhoon-force winds in exposed coastal environments.
Your Trusted Manufacturer for Curtain Wall Panel
RaxPanel is a direct manufacturer of insulated curtain wall panels based in Hebei, China, with over 15 years of continuous production experience. Our in-house R&D, design, and production capabilities deliver consistent thermal performance, fire resistance, and surface flatness for facade systems installed on landmark buildings worldwide.
With a daily production capacity exceeding 1,700 m² and exports to more than 50 countries and regions, RaxPanel combines scale with strict quality control to meet international curtain wall standards. Every panel undergoes verified lamination and bonding to support reliable facade performance and structural integrity over a long service life.
- PVDF-coated aluminum face sheets at 1.5-3mm in 3003 or 5005 alloy grades.
- Non-combustible rock wool core at 100-150 kg/m³ with thermal conductivity of 0.040-0.045 W/(m·K).
- A2-s1,d0 fire classification per EN 13501-1 with EI30 to EI240 fire resistance ratings.
- Grade 9 wind load resistance per GB/T 15227 with surface flatness within 0.5mm/m.
| Parameter | Value |
|---|---|
| Face Material | PVDF-coated Aluminum Alloy (3003, 5005) |
| Face Thickness | 1.5-3.0 mm |
| Core Material | Non-combustible Rock Wool (lamella) |
| Core Density | 100-150 kg/m³ |
| Thermal Conductivity | 0.040-0.045 W/(m·K) |
| U-value | As low as 0.32 W/m²·K |
| Thickness Range | 50-120 mm (standard: 50, 80, 100 mm) |
| Max Width | Up to 2,000 mm |
| Max Length | Up to 8,000 mm |
| Joint System | Socket-and-plug interlocking with sealant strips |
| Fire Classification | A2-s1,d0 (EN 13501-1) |
| Fire Resistance | EI30 (50mm); EI60 (80mm); EI90 (100mm); EI120 (120mm) |
| Wind Load Resistance | Grade 9 (GB/T 15227) |
| Surface Flatness | ≤ 0.5 mm/m |
| Compressive Strength | 120-220 kPa |
Curtain Wall Panel Buying Guide & FAQ
Selecting the right curtain wall panel requires understanding fire resistance, thermal performance, wind load capacity, and joint integrity. This guide answers the most common questions from architects, facade engineers, and contractors evaluating insulated sandwich panels for high-rise and public building envelope applications.
1. What fire resistance ratings do curtain wall panels achieve?
Rock wool core panels achieve A2-s1,d0 fire classification per EN 13501-1 as non-combustible. Fire resistance follows EI ratings per EN 13501-2: 50mm panels provide EI30, 80mm provides EI60, 100mm provides EI90, and 120mm provides EI120. These ratings satisfy compartmentation requirements for hospitals, high-rise offices, and public buildings mandated by modern building fire codes.
2. How does the rock wool core improve thermal performance?
The lamella rock wool core at 100-150 kg/m³ density delivers thermal conductivity of 0.040-0.045 W/(m·K), achieving U-values as low as 0.32 W/m²·K that can reduce heating and cooling costs by up to 25%. The continuous insulation layer eliminates thermal bridging at frame connections, supporting energy-efficient envelope design and green building certification compliance.
3. What wind load resistance is required for high-rise facades?
Grade 9 wind load resistance per GB/T 15227 is the highest classification, withstanding typhoon-force winds exceeding 12 on the Beaufort scale. This makes curtain wall panels suitable for coastal high-rises and exposed landmark buildings. The interlocking dry-hung assembly distributes wind loads evenly while maintaining air and water tightness across the facade envelope.
4. How does the interlocking joint system perform?
Socket-and-plug interlocking profiles with pre-embedded sealant strips create continuous air and water barriers at panel joints. This dry-hung assembly enables rapid on-site installation at 60-80 m² per day per crew, approximately 60% faster than traditional aluminum veneer systems, while maintaining surface flatness within 0.5mm/m and eliminating visible oil-canning effects.
5. What panel dimensions are available for large facades?
Curtain wall panels support large-format dimensions up to 2,000mm wide by 8,000mm long, reducing vertical joints and creating seamless architectural surfaces. This capability minimizes thermal bridging points, accelerates installation, and allows custom RAL colors, diverse surface textures, and integration with glazing systems for hybrid metal-and-glass curtain wall facade designs.