Sound insulation sandwich panel
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
Rock wool fireproof sandwich panel, made of high - strength components, is a remarkable building material. Its rock wool core, a Class A non - combustible material, has an impressive fire resistance limit, endowing it with excellent fireproof properties. Besides, it offers great heat insulation and sound - absorbing effects. Lightweight yet high - strength, it's easy to install, environmentally friendly and durable. This makes it an ideal choice for fireproof partitioning, energy conservation and heat preservation in diverse settings such as industrial plants, civil buildings, public facilities, and clean workshops.
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, |
Product Structure
Panel: Color-coated steel plate, usually blue, with anti-corrosion, weather-resistant, and UV-resistant properties.
Core material: Rock wool, with excellent thermal insulation, fireproof, and soundproof properties.
Adhesive: High-strength adhesive to ensure that the panel and core material are firmly bonded and improve overall strength.
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.
In modern construction, sound insulation sandwich panels have become an indispensable solution for creating acoustically controlled environments. These composite panels are widely used in industrial buildings, data centers, cleanrooms, auditoriums, and partition walls where noise reduction and thermal control are critical. This article provides a comprehensive analysis of their structure, performance, engineering considerations, standards, and installation requirements.
What Is a Sound Insulation Sandwich Panel?
A sound insulation sandwich panel is a multilayered construction material comprising two rigid outer face sheets and a sound-absorbing or sound-blocking core. The layered structure provides both mechanical strength and acoustic attenuation, effectively reducing the transmission of airborne and impact noise through building elements.
Typical Structure
Outer Skins: Galvanized steel, aluminum, or magnesium board
Core Materials: Mineral wool, rock wool, polyurethane (PU), or polyisocyanurate (PIR)
Panel Thickness: Typically ranges from 50 mm to 200 mm
Sound Transmission Class (STC): 30–45+, depending on configuration
Key Technical Features
| Parameter | Typical Value | Standard |
|---|---|---|
| Sound Transmission Loss (STC) | 35–45 dB | ASTM E90 |
| Thermal Conductivity | 0.035–0.045 W/m·K | EN 13165 |
| Fire Resistance | Up to EI 120 | EN 13501-2 |
| Density (Rock Wool Core) | 80–150 kg/m³ | ISO 10456 |
| Bending Strength | ≥ 0.5 kN/m² | ASTM E72 |
Core Materials and Their Acoustic Efficiency
1. Rock Wool Core
High density and fibrous structure
Excellent for absorbing airborne noise
Non-combustible (Class A1)
2. Polyurethane (PU) Core
Good thermal insulation
Moderate acoustic performance
Lightweight and moisture-resistant
3. Mineral Wool Core
Ideal for both sound insulation and fire resistance
Common in industrial noise control projects
Engineering Applications
✅ Industrial Noise Barriers
Used in factories to isolate high-noise equipment such as compressors and generators.
✅ Cleanroom Partitions
Ideal for pharmaceutical or microelectronics facilities requiring acoustic separation and hygiene.
✅ Interior Acoustic Walls
Applied in recording studios, schools, and hospitals to control ambient sound.
✅ Data Centers
Sound insulation panels reduce mechanical and HVAC noise affecting sensitive equipment.
Acoustic Design Principles
Sound insulation sandwich panels operate primarily based on:
Mass Law: Increased mass results in better noise reduction
Damping and Decoupling: Core material interrupts sound wave propagation
Absorption: Fibrous materials like rock wool absorb sound energy rather than reflecting it
Multiple layers, staggered seams, and air-tight joints are critical for optimal acoustic performance.
Regulatory and Industry Standards
Sound insulation sandwich panels must comply with:
EN 13501-1: Fire classification of construction products
ASTM E90 / ISO 10140: Laboratory measurement of airborne sound transmission loss
ISO 140-3: Measurement of sound insulation in buildings
EN 14509: Self-supporting double skin metal faced insulating panels
Ensure the selected panel meets national building codes, fire regulations, and occupational safety standards.
Installation Guidelines
Surface Preparation
Support structures must be level and aligned
Acoustic sealants applied to eliminate flanking paths
Fastening Methods
Hidden screw or exposed screw systems
Use acoustic washers to minimize vibration bridging
Joint Sealing
Tongue and groove or overlap joint systems
Seal all joints with polyurethane sealant or acoustic tapes
Vertical vs Horizontal Installation
Horizontal installation is preferred for taller walls due to enhanced joint strength
Vertical panels must be supported at regular intervals
Limitations and Considerations
Does not block low-frequency vibrations unless combined with damping layers
Heavy-duty anchors may be needed for ceiling or suspended applications
Regular inspection and maintenance required in high-moisture environments
Frequently Asked Questions (FAQ)
What is the best core material for sound insulation?
Rock wool offers the highest sound absorption and is ideal for environments requiring both noise control and fire safety.
How much noise can a sandwich panel reduce?
A properly installed panel can reduce noise levels by 35–45 dB, depending on thickness, core density, and installation quality.
Are these panels fire-resistant?
Yes. Panels with rock wool or mineral wool cores achieve up to EI120 fire resistance, depending on local code compliance.
Can sound insulation sandwich panels be used externally?
Yes, provided they are coated with UV-resistant and waterproof outer sheets and sealed properly at joints.
What is the lifespan of a sound insulation sandwich panel?
Typically 25–40 years, depending on environmental conditions and maintenance frequency.
Conclusion: Choosing the Right Sound Insulation Panel for Your Project
Sound insulation sandwich panels are essential for controlling noise transmission in commercial, industrial, and institutional buildings. Their modular construction, high acoustic performance, and thermal/fire resistance make them a cost-effective and efficient solution for modern construction needs.
