Brief Description:A1 non-woven rock wool insulation prevents fibre shedding & offers great sound absorption. Custom specs. Factory direct for partition, ceiling, machine room & duct builds.

Haochen Non-woven Fabric Faced Rock Wool Board adopts Class A1 non-combustible rock wool core produced by melting and drawing high-quality basalt. Fire-retardant polyester non-woven fabric is thermally compounded on single side or both sides under an integrated pressing process. The polyester non-woven fabric fully encapsulates the rock wool substrate and locks fibres tightly. It is a composite insulation board widely used for indoor sound absorption, building thermal insulation and fire-proof insulation of mechanical and electrical ducts. As a source manufacturer, Haochen Insulation delivers standardized production with customizable dimensions and densities.

Core Structure

Inner Core: Basalt Fire-proof Rock Wool Made of natural basalt through high-temperature melting and centrifugal fiberizing, this inorganic-fibre rock wool is non-combustible and non-toxic, with low thermal conductivity, excellent thermal insulation, sound-absorbing and vibration-damping performance. Three substrate options are available: standard rock wool, hydrophobic rock wool and high-density compression-resistant rock wool, suitable for roofing, curtain wall, machine room, underground parking garage and other working conditions.

Surface Facing: Fire-retardant Polyester Non-woven Fabric Fire-retardant polyester non-woven fabric is fully bonded to the board surface. It features great toughness, tear resistance, crack resistance, good air permeability and anti-mould performance. White is the standard colour; grey and black coloured non-woven fabric can be customized.

Core Advantages of Polyester Non-woven Fabric Encapsulation

Completely Avoid Rock Wool Fibre Shedding Bare rock wool releases fine fibres during cutting and installation, which irritate the skin and respiratory tract and contaminate electrical equipment and indoor space. Fully-wrapped non-woven fabric prevents flying fibres during cutting for clean construction. It is the preferred solution for enclosed indoor areas, power distribution rooms and precision-equipment machine rooms.

Breathable & Moderate Moisture Resistance to Prevent Performance Failure The non-woven fabric is breathable yet liquid-water-resistant. It reduces moisture penetration into the rock wool core, avoiding weight gain and deterioration of thermal insulation and sound-absorbing performance. Ideal for damp locations such as basements, garage ceilings and inner sides of ventilation ducts.

Superior Structural Integrity for Easy Cutting & Installation Non-woven fabric firmly fixes rock wool fibres and prevents board loosening, bending and collapse. Neat cutting edges are achieved without extra protective wrapping. It improves construction efficiency for ceilings, partition walls and duct cladding and reduces labor hours.

Enhanced Indoor Sound-absorbing Effect Surface non-woven fabric buffers sound waves and improves mid-high frequency noise absorption. Compared with bare rock wool, it delivers better noise reduction performance for meeting rooms, KTV, studios and offices.

Protect Rock Wool Substrate & Extend Service Life It blocks dust, insects and moisture erosion. The inorganic rock wool matched with ageing-resistant non-woven fabric maintains stable performance and serves alongside building structures for a long time.

Performance Parameters

Fire Performance: Class A1 Non-combustible; no open flame, no molten droplets, no toxic smoke under high temperature, meets various fire safety acceptance requirements

Thermal Conductivity: ≤0.040 W/(m·K), stable thermal insulation performance

NRC (Noise Reduction Coefficient): ≥0.7, superior sound-absorbing capacity

Water Repellency: 98% water-repellent treatment optional for humid environment applications

Standard Sizes: 1200×600mm; thickness 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 120mm, 150mm, 200mm, custom available

Density Range: 80–180 kg/m³, adjustable upon requirements

Application Scope

Indoor ceilings & partition walls: sound absorption and thermal insulation for hotels, office buildings, cinemas and KTV

Power distribution rooms, pump rooms, air conditioning machine rooms: equipment noise reduction with Class A1 fire-proof and dust-proof functions

Thermal insulation and noise reduction for roofing and inner wall lining of steel-structure factories

Cavity-fill insulation for building curtain wall systems

Thermal insulation and moisture-proof for garage ceilings and basements

Fire-proof and sound-absorbing cladding for smoke exhaust ducts and outer surfaces of ventilation ducts

Three Types of Facing Options

Single-sided Non-woven Faced Rock Wool Board: cost-effective, mainly for curtain wall filling and roof thermal insulation

Double-sided Non-woven Faced Rock Wool Board: dust-free and fibre-free on both sides, specially for indoor ceilings, acoustic partition walls and machine room interiors

Fully-encapsulated Non-woven Faced Rock Wool Board: six-sided dust-proof and fibre-free, applied to indoor ceilings, acoustic partition walls and machine room interiors