Brief Description:Rock wool insulation board for light-gauge steel framing is A1 non-combustible inorganic fibre infill for steel stud partitions and suspended ceilings. It features low thermal conductivity, optional high water repellency and superior sound absorption. Eco-friendly and reliable, it provides fire protection, insulation and noise reduction for prefabricated residential, commercial and public buildings.

Haochen Rock‑wool Board for Light‑gauge Steel Framing is a specialist inorganic‑fibre infill material engineered for light‑gauge steel partition walls, suspended ceilings and internal dividing systems. Produced from premium‑grade natural basalt and volcanic rock raw materials, it undergoes high‑temperature melting, high‑speed centrifugal fibre spinning and pressure‑curing forming processes. It acts as a core component delivering fire protection, thermal insulation and noise reduction for modern prefabricated buildings, commercial developments and residential fit‑out projects.

Tailored for steel‑stud cavity assemblies, the board aligns perfectly with standard keel spacing and achieves full, compact filling free of hollow voids. Compatible with plasterboard, calcium‑silicate board and other facing panels, it is extensively adopted in thermal‑insulation and fire‑safety works for internal partitions and ceilings as a high‑performance, eco‑friendly building infill material.

1 Core Product Features

1.1 Euroclass A1 Fire Performance, High‑level Safety

Manufactured from pure inorganic‑fibre feedstock without any combustible constituents, the board achieves Euroclass A1 non‑combustible performance. When subject to fire, it generates no burning droplets, molten drips or toxic fumes. Installed within steel‑stud cavities, it forms a continuous, unbroken fire‑barrier layer, effectively restricting flame spread and enhancing the overall fire‑resistance integrity of walls and ceilings. It meets fire‑approval requirements for shopping centres, office blocks, hotels, hospitals and other public‑use buildings, substantially upgrading overall building fire safety.

1.2 Efficient Sound Absorption & Noise Reduction

Boasting a homogeneous three‑dimensional porous‑fibre matrix, the board efficiently absorbs airborne sound and attenuates sound transmission. It mitigates common site issues including poor partition acoustic performance, indoor reverberation and cross‑room noise transfer. Stable acoustic performance is maintained against everyday speech noise, plant‑equipment operational noise and general ambient noise. Once fully fitted within cavities, light‑gauge steel partitions achieve markedly improved sound insulation, satisfying quiet‑space requirements for office zones, hotel guest rooms, cinemas and domestic bedrooms.

1.3 High‑performance Thermal Insulation for Building Energy Efficiency

Haochen rock‑wool board has a declared thermal conductivity of ≤0.040 W/(m·K), delivering outstanding thermal‑insulation capability. Its dense fibre matrix traps stagnant air and inhibits heat transfer across the building envelope. It limits heat ingress in summer and reduces indoor heat loss in winter, stabilising indoor temperature differentials and cutting energy demand for air‑conditioning and heating plant. It complies with prevailing building energy‑saving codes, supports green‑building certification schemes and balances practical engineering performance with whole‑life economic benefits.

1.4 Superior Hydrophobic Properties and Long‑term Service Stability (Optional Specification)

Two product variants are offered: standard grade and hydrophobic grade. The hydrophobic variant is treated with specialist water‑repellent additives to achieve water repellency ≥98%, providing excellent moisture resistance, anti‑condensation performance and tolerance to fluctuating humidity levels. It resists water uptake, mould growth and physical deformation in humid internal environments. Subject to changing ambient humidity, the board will not shrink, loosen or delaminate; its fire‑resistance, acoustic and thermal‑insulation characteristics remain consistent throughout service life. It is suitable for humid functional zones, basement compartments and partition walls adjacent to kitchens and sanitary spaces.

1.5 Eco‑friendly and Non‑hazardous

Manufactured entirely from naturally‑sourced mineral raw materials, the product contains no formaldehyde, benzene, asbestos or other harmful substances. The full production cycle has low environmental impact, and no toxic emissions are released under fire conditions. It satisfies indoor environmental‑protection standards. Physico‑chemically inert and odour‑free, it inhibits bacterial and microbial proliferation; it is safe for occupied enclosed interiors and suitable for both residential and commercial fit‑out contracts.

1.6 Light‑weight and Practical to Install

Light‑weight with good inherent toughness, the board cuts cleanly with minimal dust generation. No complex specialist tools are required. It can be cut‑to‑size to match keel spacing and wall heights, delivering full, tight cavity filling on‑site without gaps, hollowing, sagging or displacement. Compatible with widely‑used light‑gauge steel keel profiles 75, 100 and 120, it integrates seamlessly with prefabricated dry‑construction methods, raising installation productivity and lowering labour costs. Exhibiting good compressive strength, low slag content and high toughness, the board resists pulverisation and fibre shedding over decades of service; its service life matches the design life of building wall assemblies.

2 Core Technical Parameters

2.1 Basic Parameters

Fire Performance: Euroclass A1 Non‑combustible

Thermal Conductivity: ≤0.036 W/(m·K)

Water Repellency Rate: ≥98% (standard grade receives no hydrophobic treatment; hydrophobic variant is optional)

Operating Temperature: ‑20℃ ~ 600℃

Standard Thickness: 50 mm, 60 mm, 70 mm, 80 mm, 100 mm; custom dimensions available upon request

2.2 Density Classification

Standard Grade: 60, 80, 100 kg/m³

Medium Grade: 120, 140 kg/m³

High‑end Grade: 160, 180 kg/m³

3 Standard Installation Procedures

3.1 Substrate Preparation

Complete assembly, levelling and secure fixing of the light‑gauge steel frame. Remove dust and debris from within keel cavities to ensure consistent stud spacing and structurally robust support.

3.2 Board Cutting

Precisely cut rock‑wool slabs to suit actual cavity dimensions. Ensure board height and width fit cavity apertures accurately with no gaps and avoid surplus overlapping material.

3.3 Cavity Infilling

Insert pre‑cut rock‑wool boards evenly into steel‑stud cavities. Achieve full, uniform, dense filling. Eliminate voids, gaps and loose sections to remove thermal‑insulation and fire‑protection blind spots.

3.4 Panel Sealing & Fixing

Once infilling is complete, cover with plasterboard, calcium‑silicate board or alternative facing panels, and fasten uniformly with self‑tapping screws to finalise partition and ceiling construction.

4 Wide‑ranging Application Sectors

4.1 Commercial Projects

Office partitions, retail shop wall assemblies, hotel guest rooms, corridor dividing walls, KTV venues, cinemas, conference rooms and other acoustic‑insulation & fire‑safety partition and ceiling schemes.

4.2 Residential Interiors

Internal partition walls, bedroom dividing walls, living‑room ceilings, attic partitions, wall infilling for humid kitchen‑and‑bathroom zones.

4.3 Public‑building Projects

School classrooms, hospital wards, care‑home facilities, libraries, government halls and other interior spaces requiring low‑noise environments and robust fire‑safety performance.

4.4 Industrial‑building Projects

Factory dividing partitions, acoustic‑insulation walls for plant‑rooms, noise‑reduction partitions, thermal‑insulation and fire‑proof infill for steel‑structure wall assemblies.

5 Product Advantages

Combining Euroclass A1 fire resistance, high‑efficiency sound absorption, thermal‑insulation energy‑saving, moisture‑durability, eco‑friendly properties and ease of installation, Haochen Rock‑wool Board for Light‑gauge Steel Framing is a dedicated infill material for prefabricated steel‑stud wall systems. It resolves well‑known limitations of conventional wall constructions: inadequate fire performance, insufficient sound insulation, performance degradation under damp conditions and excessive building‑energy consumption.

Aligned with industry trends for prefabricated, low‑carbon energy‑efficient buildings, it balances engineering build quality, fire‑regulatory compliance and indoor occupant comfort, and constitutes the preferred infill material for internal partition and ceiling systems.