100mm Rock Wool Fireproof Board
Overview
The 100mm thick rock wool fireproof board is an engineered insulation material primarily composed of molten basalt rock spun into fibers. It is widely recognized for its exceptional fire resistance, achieving A1 non-combustible classification per EN 13501-1 standards. The 100mm thickness provides optimal thermal insulation (R-value ~2.5 m²·K/W) and sound attenuation (NRC up to 0.95), making it ideal for demanding applications. Manufactured through a high-temperature melting process (approx. 1500°C), the board retains structural integrity up to 750°C. Its inorganic composition ensures longevity without decay or mold growth. The board is commonly faced with aluminum foil or glass fiber cloth for enhanced durability and vapor barrier properties.
Structure and Working Principle
The board consists of interlocking basalt fibers (typically 4-7 μm diameter) bonded with thermosetting resins. This labyrinthine structure traps air pockets, creating effective thermal barriers. The high melting point of basalt (over 1000°C) prevents structural collapse during fire exposure, while the board's low thermal conductivity (0.038 W/m·K average) slows heat transfer. For fire protection, the board works through three mechanisms: insulation (delaying heat penetration), integrity (maintaining barrier formation), and stability (resisting structural deformation). The 100mm thickness provides 60-240 minutes of fire resistance depending on installation configuration and supporting structures.
Key Features
Fire Performance: Achieves Euroclass A1 certification, withstanding temperatures exceeding 1000°C without emitting toxic smoke. The material contributes zero to fire spread and is specified for high-risk environments like oil refineries and high-rise buildings. Thermal Efficiency: With λ-values of 0.035-0.040 W/m·K, the 100mm board delivers U-values as low as 0.35 W/m²·K when installed in standard wall assemblies. This meets passive house standards in many climate zones. Acoustic Properties: The fibrous structure absorbs sound waves across frequencies (125-4000 Hz), reducing noise transmission by 40-60 dB when used in partition walls or HVAC enclosures.
Application Areas
Construction: Used in external wall insulation systems (ETICS), cavity walls, and fireproof cladding. The 100mm version is specified for fire compartmentation in commercial buildings and industrial facilities where 2-4 hour fire ratings are required. Industrial: Insulates pipelines, boilers, and industrial ovens in petrochemical plants. Its non-combustible nature makes it mandatory for LNG terminals and offshore platforms per API and NFPA standards. HVAC: Ductwork insulation in hospitals and data centers where both fire protection and noise control are critical. The board is often fabricated into pre-insulated duct sections for modular installation.
Maintenance and Precautions
Rock wool requires minimal maintenance but should be inspected annually for moisture ingress or mechanical damage in exposed applications. For outdoor use, protective facings (e.g., aluminum jacketing) prevent fiber erosion from weather exposure. Installation requires PPE (gloves, goggles, and respirators) to prevent skin/eye irritation from loose fibers. Cutting should be done with serrated knives or specially-designed saws to minimize airborne particles. All edges must be properly sealed with approved tapes or mastics to maintain fire rating integrity.
B2B Procurement Guide
Technical Specifications: Request third-party test reports for fire resistance (EN 1363-1), thermal conductivity (ISO 8301), and compressive strength (EN 826). Verify CE marking and local regulatory compliance (e.g., UKCA, GB 8624 for Chinese market). Logistics Considerations: Standard pallet dimensions are 1200×600×100mm (6-8 boards/pallet, ~50kg each). Climate-controlled storage is recommended to prevent moisture absorption before installation. Supplier Evaluation: Prioritize manufacturers with ISO 9001/14001 certification and ask for project references in similar applications. MOQs typically range from 100-500 m² for custom orders.
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