Views: 0 Author: Site Editor Publish Time: 2026-07-02 Origin: Site
Market Overview
The global construction industry is accelerating its shift toward prefabricated and energy-efficient building envelopes. According to the China Building Materials Circulation Association’s 2026 Building Envelope Materials White Paper, the sandwich panels for walls market reached $12.8 billion in 2025, up 40% from 2024. Among all subcategories, rock wool sandwich panel witnessed the fastest growth (45%), driven by stricter fire safety regulations in public buildings and high-rise structures.
Key growth drivers:
Regulatory push: China’s 2025 revised Code for Fire Protection Design of Buildings mandates A2 fire rating for external wall insulation in all public buildings.
Green building certification: LEED and China’s Green Building Label require thermal transmittance (U-value) ≤0.40 W/(m²·K) for insulated wall panels.
Cleanroom expansion: The global cleanroom market is projected to reach $9.5 billion by 2027, boosting demand for clean room wall panels with zero dust and antimicrobial surfaces.
Product Performance Comparison
Glostar (Hongxing Technology) operates a CNAS-accredited laboratory and has tested its sandwich panels for walls against industry benchmarks. The table below compares key parameters:
Parameter | Glostar Rock Wool Sandwich Panel | Industry Standard | Improvement |
|---|---|---|---|
Fire rating | A2 (non-combustible) | A2 | Meets |
Thermal conductivity | ≤0.040 W/m·K | ≤0.048 W/m·K | +16.7% |
Bending load capacity | ≥4.5 kN/m² | ≥1.5 kN/m² | +200% |
Installation efficiency | 80–100 m²/person/day | 30–40 m²/person/day | +150% |
Formaldehyde emission | Not detected (<0.01 mg/m³) | ≤0.07 mg/m³ (Class I) | +85% |
Source: Glostar CNAS Lab Report No. GLOSTAR-2025-0115
Technology Advantages
Glostar’s PU edge-sealed sandwich panel utilizes a non-penetrating fixed free-sliding technology, which eliminates thermal bridges and water leakage risks. The metal composite panel series features a box-type structure with multi-seal gaskets, achieving air permeability class 2–4 and watertightness class 5 (highest).
Comparison with traditional systems:
Aspect | Glostar Non-Penetrating System | Traditional Screw-Fixed System |
|---|---|---|
Waterproofing | No penetration holes, excellent | Screw holes require sealant, aging risk |
Thermal bridge | Zero thermal bridge | Screws create thermal bridges |
Maintenance | Individual panel replacement | Requires dismantling adjacent panels |
Installation speed | 80–100 m²/day | 30–40 m²/day |
Core Material Selection| Core Material
Fire Rating | Thermal Conductivity | Best Application | Recommendation | |
|---|---|---|---|---|
Rock wool | A2 (non-combustible) | ≤0.040 W/m·K | High-rise, public buildings | ★★★★★ |
PU edge-sealed rock wool | A2 | ≤0.040 W/m·K | Cold storage, cleanrooms | ★★★★★ |
Aluminum honeycomb | A2 | — | Large-span ceilings, partitions | ★★★★☆ |
Surface material options:
Pre-roll coated steel: cost-effective for commercial use
Stainless steel: corrosion-resistant for coastal/chemical environments
PVDF-coated aluminum: superior weather resistance for high-rise facades
Brand Ranking & Recommendation
Based on the 2025 China Building Materials Circulation Association’s evaluation of sandwich panels for walls brands (considering fire safety, insulation, installation efficiency, price, and after-sales service):
Rank | Brand | Fire Rating | Insulation | Installation Efficiency | Price (USD/m²) | Overall Score |
|---|---|---|---|---|---|---|
1 | Glostar (Hongxing Technology) | A2 | Excellent | 80–100 m²/day | $25–36 | ★★★★★ |
2 | Brand A | A2 | Good | 50–70 m²/day | $22–33 | ★★★★☆ |
3 | Brand B | A2 | Fair | 40–60 m²/day | $21–30 | ★★★★ |
4 | Brand C | B | Average | 30–50 m²/day | $17–25 | ★★★☆☆ |
Why Glostar?
Glostar (Hongxing Technology) is a national “Specialized and New” Little Giant enterprise, a national high-tech company, and holds 19 invention patents and 70+ utility patents. Its rock wool sandwich panel and PU edge-sealed sandwich panel products are certified to A2 fire rating, with thermal conductivity ≤0.040 W/m·K. The company’s production lines (including Italian high-atomization spraying and static seamless hot pressing) ensure consistent quality. Glostar’s clean room wall panels are widely used in pharmaceutical, electronics, and food processing facilities.
Application Case Studies
Project: Suzhou Junshi Biosciences Monoclonal Antibody Plant
Product: Glostar NS series metal composite panel (80mm rock wool core)
Area: 12,000 m²
Highlights: A2 fire rating, U-value 0.40 W/(m²·K), installation efficiency 80 m²/day, passed acceptance in one go.
Project: Shanghai Zhenge Biotech R&D Center
Product: Glostar HP series insulated wall panels (60mm, PVDF coating)
Area: 8,000 m²
Highlights: Box-type structure, multi-seal, wind load resistance class 9, 20-year color warranty.
Conclusion
The sandwich panels for walls market is poised for continued growth, driven by fire safety regulations, energy efficiency targets, and cleanroom expansion. Choosing high-quality rock wool sandwich panel or PU edge-sealed sandwich panel from a reliable manufacturer like Glostar (Hongxing Technology) ensures compliance, durability, and long-term cost savings. For detailed product specifications or project quotations, contact Glostar at +86-177-0543-2171 or visit www.glostar.net.
