Rockwool Panels
Fire resistance: Rock wool is made of minerals such as basalt and is a Class A non-combustible material. It can effectively prevent the spread of fire and improve building safety.
Thermal insulation: Rock wool has a low thermal conductivity, which can effectively reduce heat transfer, improve building insulation effect, and reduce energy consumption.
Sound insulation: The porous structure of rock wool can absorb sound waves and reduce noise transmission, and is suitable for places where sound insulation is required.
Corrosion resistance: Rock wool has stable chemical properties, is resistant to acid and alkali corrosion, is suitable for a variety of environments, and has a long service life.
High compressive strength: Rock wool has a tight structure and good compressive resistance, and is suitable for occasions that require load-bearing.
Product Introduction
Rockwool Panels are a type of building material crafted from high-strength components, boasting outstanding fireproof, heat-insulating, and sound-insulating features. The rockwool core material within these panels is a Class A non-combustible substance, offering a remarkably high fire resistance limit. Besides top-notch fireproofing, they also deliver excellent heat insulation and sound absorption.
These panels are versatile, fitting well in industrial plants, civil buildings, public facilities, and clean workshops. Their lightweight yet high-strength nature makes installation a breeze. Additionally, they are environmentally friendly and durable. For applications requiring fireproof isolation, energy conservation, and thermal insulation, Rockwool Panels stand as an ideal choice.
Product Specifications
Effective width | Wall panel: 950mm |
Roof panel: 960mm | |
Material | Color Steel Sheet |
Rock wool board | |
Structure | Upper and lower layer: color steel sheet |
Middle layer: Rock wool board | |
Thickness | Color steel sheet: 0.5~0.8mm |
Rock wool board: 50mm, 75mm, 100，150mm | |
Rock wool Density | 120kg/m³ |
Lifetime | 20~35 years |
Features | Heat Insulation, light weight, quick installation,waterproof, fireproof, soundproof, energy-saving,environmental friendly, |
Application Areas
Industrial plants: used for walls and roofs, providing insulation, fire protection, and sound insulation.
Warehouses: suitable for the walls and roofs of large warehouses to improve insulation effects.
Cold storage: used for cold storage walls, with excellent insulation performance.
Public buildings: such as gymnasiums, exhibition halls, etc., to meet fire protection and sound insulation requirements.
Temporary buildings: such as temporary buildings on construction sites, quick installation and reusable.
Project Cases
Sandwich panels have extensive applications across multiple sectors, including industrial construction, factory buildings, transportation, cold storage, and healthcare. In projects such as Jidong Intelligent Manufacturing New City, Qingzhou High-Speed Railway Station, Gold and Silver Valley Industrial Park, International Fresh Cold Chain Park, Hailier Pharmaceutical, and Boxing People's Hospital, these panels play a crucial role. They guarantee durability, optimize energy efficiency, and maintain hygienic conditions, making them an essential choice for a wide range of construction and infrastructure needs.
Rockwool panels—also known as mineral wool sandwich panels—are advanced building materials composed of non-combustible stone wool as the core insulation, sandwiched between metal facings or fiber-reinforced liners. Engineered for fire resistance, thermal stability, sound insulation, and moisture control, these panels are widely used in industrial, commercial, and institutional building envelopes.
This article outlines the structure, technical specifications, compliance standards, and applications of Rockwool panels to help contractors, architects, and project engineers make informed decisions.
Table of Contents
What Are Rockwool Panels?
Panel Composition and Engineering Principles
Thermal, Acoustic, and Fire Performance
Compliance With International Standards
Key Applications in Construction
Installation and Safety Considerations
Frequently Asked Questions (FAQs)
Conclusion and Call to Action
1. What Are Rockwool Panels?
Rockwool panels are composite wall or roof cladding systems designed with:
Outer Facings: Pre-painted galvanized steel, stainless steel, or aluminum sheets
Core Material: Rigid Rockwool (stone wool) with density typically between 90–150 kg/m³
Bonding Layer: High-performance adhesives or lamination techniques for dimensional stability
These panels provide fire resistance up to 4 hours, thermal conductivity as low as 0.034 W/m·K, and noise reduction up to 35 dB, making them suitable for fire-prone, noise-sensitive, and energy-efficient structures.
2. Panel Composition and Engineering Principles
| Layer | Material | Function |
|---|---|---|
| Outer Sheet | 0.5–0.7 mm galvanized or color-coated steel | Impact resistance, weatherproofing |
| Core | Non-combustible Rockwool (basalt origin) | Fire resistance, insulation, sound absorption |
| Inner Sheet | Steel, aluminum, or composite board | Aesthetic finish, vapor barrier |
| Adhesive | PU glue / thermosetting resin | Structural bonding, dimensional integrity |
The core of basalt-based fibers traps air within a fibrous matrix, which slows down heat transfer, dampens acoustic waves, and acts as a non-combustible barrier in case of fire.
3. Thermal, Acoustic, and Fire Performance
| Property | Typical Value | Standard |
|---|---|---|
| Thermal Conductivity | 0.034–0.040 W/m·K | ISO 8301 |
| Fire Rating | EI60–EI240 (up to 4 hrs) | EN 13501-2 / GB 8624 A1 |
| Reaction to Fire | A1 (non-combustible) | EN 13501-1 |
| Sound Insulation | 25–35 dB | ISO 10140-2 |
| Compressive Strength | ≥80 kPa | EN 826 |
| Water Absorption | ≤1.0 kg/m² (surface), non-hygroscopic | EN 1609 |
4. Compliance With International Standards
To ensure safe and sustainable use, Rockwool panels adhere to:
EN 14509 – CE marking for factory-made sandwich panels
EN 13501-1 / 13501-2 – Fire classification and fire resistance
FM Approval (Class 4880 / 4881) – Fire safety and wind uplift performance
ISO 14001 / 9001 – Environmental and quality management
ASTM E84 – Surface burning characteristics
REACH / RoHS – Chemical safety and non-toxicity
LEED / BREEAM – Contributes to green building certifications
🌱 Sustainability Note: Rockwool is made from natural volcanic rock and is fully recyclable, supporting low-carbon building goals.
5. Key Applications in Construction
| Sector | Use Case |
|---|---|
| Industrial | Power plants, steel mills, chemical storage units |
| Commercial | Warehouses, supermarkets, shopping centers |
| Public Institutions | Hospitals, airports, schools, train stations |
| Modular Buildings | Container homes, prefabricated rooms |
| Cleanrooms | Pharmaceutical or food-grade environments (with special coatings) |
6. Installation and Safety Considerations
Installation Tips:
Installed vertically or horizontally using hidden or exposed fastener systems
Joints sealed with EPDM gaskets or silicone to prevent water ingress
Compatible with aluminum flashing, door, and window modules
Handling & Safety:
Always wear gloves and masks when cutting Rockwool
Panels should be stored horizontally on a dry surface with protective wrap
Maintain 10 mm expansion gaps at connections to accommodate thermal movement
7. Frequently Asked Questions (FAQs)
Q1: Are Rockwool panels waterproof?
Rockwool itself is water-repellent but vapor-permeable. When used with metal skins and sealed joints, the panels offer excellent water resistance.
Q2: Can Rockwool panels be used in cold storage?
Yes. Though PU or PIR offer lower thermal conductivity, Rockwool is used in fire-critical cold storage applications where flame spread is a concern.
Q3: Do Rockwool panels degrade over time?
No. Rockwool maintains thermal and acoustic performance for over 25+ years with minimal degradation in indoor environments.
Q4: What is the best panel thickness?
Common thicknesses range from 50 mm to 200 mm, depending on the fire rating and insulation requirement.
EI60 = 50 mm
EI120 = 100 mm
EI240 = 150 mm+
Q5: Are custom colors or perforated finishes available?
Yes. Coatings like PVDF, HDP, PE and perforated acoustic inner linings are available for enhanced design and absorption.
8. Conclusion and Call to Action
Rockwool panels are the ideal building envelope solution where fire safety, acoustic control, and thermal performance intersect. Whether you're constructing a hospital, factory, or modular unit, Rockwool panels offer code compliance, energy efficiency, and structural confidence in one solution.
