Whether you are insulating air handling units (AHUs), chillers, boilers, or ceiling plenum systems,
Foil rock wool board is a rigid
thermal insulation panel manufactured from spun basaltic rock fibers, bonded with thermosetting resin, and laminated with a factory-applied aluminum foil facing. The facing—typically
FSK (foil-scrim-kraft) or composite aluminum foil—serves multiple functional roles: it reflects radiant heat, blocks moisture vapor transmission, and provides a clean, durable surface that withstands the rigors of mechanical room environments.
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Property
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Value
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Dimensions (L × W)
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1200 × 600 mm / 2400 × 1200 mm
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Thickness
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50–200 mm
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Density
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80–200 kg/m³
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Thermal Conductivity (25°C)
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≤ 0.039 W/
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Facing Options
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FSK, Composite Aluminum Foil, Pure Aluminum Foil, Fiberglass-Aluminum Foil (customizable)
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Fire Rating
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Euroclass A1 / Non-Combustible
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Service Temperature
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-50°C to +750°C
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Melting Point
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> 1000°C
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Critical HVAC Applications
1. Equipment Insulation: AHUs, Chillers & BoilersMechanical rooms are the heart of any commercial building's climate control system. Foil rock wool board is extensively specified for:
1)
Air Handling Unit (AHU) Insulation: Wrapping AHU casings and internal baffles with foil-faced rock wool prevents thermal bridging, reduces energy loss, and controls condensation on cold surfaces. The aluminum facing eliminates the need for additional vapor retarders, cutting installation time by up to 30%.
2)
Chiller Insulation: Low-temperature chilled water pipes and chiller housings are prone to sweating in tropical Southeast Asian climates. The built-in vapor barrier of FSK rock wool board maintains insulation integrity and prevents corrosion under insulation (CUI).
3)
Boiler & Heat Exchanger Insulation: With a service temperature up to +750°C and a melting point exceeding 1000°C, foil rock wool board provides safe, stable thermal protection for high-heat equipment—far beyond the capabilities of organic-based rubber foam insulation.
2. Ceiling Plenum & Wall Cavity SystemsIn commercial offices, hospitals, hotels, and data centers across East Asia, ceiling plenum spaces house ductwork, electrical conduits, and sprinkler systems. Installing foil rock wool board in these cavities delivers three benefits simultaneously:
1)
Thermal Control: Prevents heat gain from hot attic spaces into conditioned zones, reducing cooling loads and improving energy efficiency.
2)
Acoustic Dampening: The dense mineral wool core absorbs duct-borne noise and air turbulence, contributing to superior indoor environmental quality.
3)
Fire Compartmentalization: As a non-combustible material, foil rock wool board acts as a fire barrier within wall cavities and ceiling assemblies, slowing flame spread and meeting stringent local building codes.
Performance Comparison: Why Foil Rock Wool Board Wins
vs. Foil-Faced Glass Wool Board
While
HVAC glass mineral wool insulation shares the non-combustible advantage of rock wool,
foil rock wool board offers decisive benefits:
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Performance Factor
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Foil Rock Wool Board
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Foil-Faced Glass Wool
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Compressive Strength
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High (rigid, no sagging)
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Low (prone to settling)
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Service Temperature
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-50°C to +750°C
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-30°C to +250°C
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Dimensional Stability
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Excellent (no thermal drift)
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Moderate (can compress over time)
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Durability
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50+ years
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30–40 years
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Moisture Resistance
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High (hydrophobic core + foil)
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Medium (absorbs water if facing damage)
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vs. Rubber Foam Insulation (NBR/PVC)
Rubber foam insulation is commonly used for chilled water lines and small-diameter ducts, but it carries significant limitations:
1) Fire Hazard: Rubber foam is combustible. In the event of fire, it releases dense, toxic smoke and can act as a flame propagation pathway through ductwork systems.
2) Temperature Limitation: Most rubber foam products degrade above 85°C, making them unsuitable for boiler or hot water pipe applications.
3) UV & Ozone Sensitivity: Outdoor or exposed mechanical room installations require additional protective cladding, increasing material and labor costs.
Engineered for East & Southeast Asian Markets
Superior Moisture & Mold Resistance
East Asia and Southeast Asia present some of the world's most challenging humidity profiles, with relative humidity routinely exceeding 80% and monsoon seasons creating persistent condensation risks. Foil rock wool board addresses this through:
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Hydrophobic Core: The rock wool fibers are treated to repel liquid water while allowing vapor permeability, preventing saturation and R-value degradation.
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Anti-Microbial Surface: The aluminum foil facing creates an inhospitable environment for mold and bacterial growth—critical for healthcare facilities, food processing plants, and pharmaceutical cleanrooms.
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Vapor Barrier Integrity: FSK and composite foil facings achieve perm ratings low enough to function as primary vapor retarders, eliminating condensation on cold equipment surfaces.
Fully Customizable for Project-Specific Needs
No two HVAC projects are identical. Our foil rock wool board production line accommodates:
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Custom Dimensions: Beyond standard 1200 × 600 mm and 2400 × 1200 mm formats, we precision-cut boards to exact equipment casing dimensions, reducing on-site waste and labor.
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Facing Selection: FSK for standard mechanical rooms, composite aluminum foil for enhanced durability, pure aluminum foil for aesthetically exposed applications, and fiberglass-aluminum foil for high-abrasion environments.
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Thickness & Density Matching: From 50 mm low-density boards for ceiling plenums to 200 mm high-density panels for heavy equipment, every specification is tailored to thermal and acoustic performance targets.
Complete Certification Package
For B2B buyers and specifiers navigating multi-national procurement, documentation is non-negotiable. Our foil rock wool board carries:
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CE Marking (European conformity for export reference)
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ISO 9001 Quality Management System
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ISO 14001 Environmental Management System
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SGS Fire-Retardant Test Reports
This certification portfolio ensures smooth customs clearance, compliance with local building authority requirements, and eligibility for
green building certifications such as LEED and BREEAM.
Sustainability & Lifecycle Value
Mineral wool insulation is inherently sustainable. Manufactured from abundant basaltic rock and containing up to 50% recycled content, foil rock wool board contributes to green building objectives without compromising performance. Its 50+ year service life eliminates the replacement cycles associated with organic insulation materials, reducing total cost of ownership and landfill impact.
The aluminum facing is also recyclable, and the inert rock wool core poses no chemical off-gassing risk—ensuring healthy indoor air quality from day one.
Conclusion: Specify Foil Rock Wool Board for Your Next HVAC Project
For B2B buyers, MEP contractors, and facility managers across East Asia and Southeast Asia, foil rock wool board represents the convergence of thermal performance, fire safety, moisture control, and installation efficiency. In HVAC applications ranging from air handling unit insulation to ceiling plenum and wall cavity systems, it outperforms HVAC glass mineral wool insulation in durability and surpasses rubber foam insulation in fire safety.
With customizable dimensions, multiple facing options, comprehensive certifications, and rapid global delivery, our
foil rock wool board is engineered to keep your projects on schedule, on budget, and on specification.
* Request a technical datasheet or custom quotation today. Our engineering team is ready to support your next commercial, industrial, or institutional HVAC insulation project.
