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Yumisteel
Product introduction
Our rockwool insulated galvanized color steel roof sandwich panels are designed to solve a critical pain point in industrial roofing: poor fire safety, heat loss or gain through the roof, and corrosion from moisture or chemical exposure. By bonding non‑combustible rockwool core between two layers of galvanized color steel plates, these panels provide A grade fire protection, excellent thermal insulation, and superior resistance to rust and impact all in one light weight, easy‑to‑install roofing solution.
Applications include factory roofs, warehouse roofing, workshop ceilings, agricultural buildings, logistics centers, and any industrial facility that requires a fire‑safe, energy efficient, and long lasting roof.
Product Specification
Specification | Details |
Panel Thickness | 50mm, 75mm, 100mm, 120mm, 150mm, 200mm |
Panel Width | 1000mm (standard), 950mm, 600mm (optional) |
Panel Length | 2000mm–12000mm (customizable) |
Steel Facings | Pre-painted galvanized steel / color coated steel |
Steel Thickness | 0.4mm–0.8mm (both sides) |
Core Material | Rockwool (stone wool) |
PU Density | 80–160kg/m³ |
Thermal Conductivity (λ) | ≤ 0.040 W/(m·K) |
Fire Rating | A1 – A2 (non-combustible) |
Sound Absorption Coefficient (NRC) | 0.85 – 0.95 |
Sound Reduction Index (Rw) | 30 – 45 dB (depending on thickness) |
Melting Point | > 1000°C |
Water Vapor Permeability (μ) | 1 (no capillary effect) |
Joint System | Steel tongue-and-groove / concealed fastener |
Compressive Strength | (10% deformation) ≥ 40 kPa |
Application Temperature | -40°C to +200°C |
Applications | Warehouses, workshops, industrial plants, logistics centers, commercial roofs, partition walls, fire-rated enclosures |
Rockwool sandwich panels VS PIR sandwich panels
Here is a detailed comparison table from a buyer's perspective to help you choose between Rockwool and PIR sandwich panels:
Comparison Factor | Rockwool Sandwich Panels | PIR Sandwich Panels |
Core Material | Dense rock wool fibers made from natural rock | Rigid polyisocyanurate foam |
Fire Performance | Non-combustible (Class A) . Excellent fire barrier; does not melt or release toxic fumes. | Combustible (Class B) . Burns and chars but offers better fire resistance than standard PU foam. |
Thermal Insulation | Good sound absorption and stable insulation, but requires greater thickness for extreme temperatures. | Superior thermal efficiency. Lower thermal conductivity means better energy savings with thinner panels. |
Moisture Resistance | Highly absorbent if damaged or poorly sealed; can lose insulating properties when wet. | Excellent moisture resistance. High closed-cell rate prevents water absorption. |
Weight & Handling | Heavy and dense. Harder to cut and install; generates dust during cutting. | Lightweight and rigid. Easy to cut, lift, and install; cleaner job site. |
Cost Efficiency | Generally more expensive due to material weight and complexity. | More cost-effective. Lower material cost and faster installation reduce total project expenses. |
Service
Comprehensive Construction Solutions for Modern Infrastructure
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Precision Material Fabrication | Custom Structural Design | Project Management & Installation | Technical Consultation & Support |
Yumisteel is a comprehensive construction solution provider dedicated to driving innovation in the construction industry. We offer clients intelligent, durable, and cost-effective solutions, covering every stage from initial design to final installation.
We are not just construction material suppliers; we are your strategic engineering partners who solve complex structural challenges. We integrate advanced manufacturing technology, rigorous quality control, and expert project coordination to deliver robust, reliable, and sustainable steel structures.
| | Address：Unit 1604-1, Building F05, Phase III, Software Park,Jimei District, Xiamen,Fujian,China Postal code:361021 |
| | Custom support and sales： +86-592-6095031 |
| | Working hours：Mon-Sat： 08：00-18：00 |
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