Brief Description:Partition-filled and ceiling sound-absorbing rock wool board is A1 non-combustible insulation for light-steel-keel partitions and ceiling cavities. It integrates sound absorption, fire resistance and thermal insulation, reducing sound transmission and indoor reverberation in offices, hotels, shops and factories. Factory direct supply, custom sizes available.

Haochen Indoor Sound‑Absorbing Rock‑wool Board is a purpose‑engineered acoustic infill solution developed and produced in‑house for modern interior construction and renovation projects. Optimised specifically for indoor noise control, echo reduction and room acoustic enhancement, it is widely specified for light‑steel partition cavity filling, wall sound insulation and ceiling acoustic treatment. As a high‑performance core acoustic material, it is the ideal choice for noise improvement works in offices, retail spaces, hotels and residential interior refurbishments.

Manufactured from premium basalt fibres via high‑temperature centrifugal forming and high‑pressure curing, the board features a stable three‑dimensional interconnected porous structure. Its dense micro‑fibre matrix effectively captures and dissipates airborne sound energy, efficiently resolving common indoor acoustic issues such as cross‑partition sound leakage, inter‑floor noise transmission and excessive indoor reverberation. Superior to conventional acoustic infill materials, Haochen indoor rock‑wool delivers higher sound absorption efficiency and long‑term consistent acoustic performance. It integrates Class‑A non‑combustible fire safety, moisture stability and anti‑sagging structural reliability, combining acoustic insulation, thermal retention and fire protection within a single versatile panel.

Core Application Advantages

1. Partition Wall Acoustic Infill – Eliminates Cross‑Room Noise Leakage

Designed for installation within light‑steel stud wall cavities and internal dividing partitions, this rock‑wool board effectively blocks airborne sound transmission between adjacent spaces. It significantly attenuates speech noise, daily ambient disturbance and office background sound that commonly penetrate lightweight partition walls. By improving overall wall sound reduction performance, it resolves poor privacy and cross‑room noise interference, delivering enhanced acoustic comfort for offices, retail outlets, hotel rooms and meeting facilities.

2. Ceiling Acoustic Layer – Reduces Reverberation & Inter‑floor Noise

Installed inside ceiling voids, the porous fibre structure absorbs indoor reverberation and ambient echo, creating balanced, quiet indoor acoustics. It also suppresses downward propagation of footfall noise, object dragging sound and mechanical vibration transmitted from upper floors. Ideal for improving poor ceiling insulation and echoing issues in spacious indoor environments, it greatly optimises overall building acoustic performance.

3. Universal Indoor Noise Control for All Quiet‑focused Spaces

Suitable for a wide range of noise‑sensitive interior environments, including new acoustic renovations, existing building noise upgrades, live streaming rooms, training centres, conference rooms, commercial offices and street‑side retail units. Combined wall and ceiling acoustic treatment effectively lowers indoor background noise and reduces reverberation, creating calm, quiet and comfortable interior spaces for commercial and residential use.

Key Product Performance Features

1. High‑porosity Fibre Structure for Superior Acoustic Performance

The uniformly distributed open‑pore three‑dimensional fibre structure provides excellent mid‑to‑high frequency sound energy dissipation. It efficiently absorbs human voice, daily noise and mechanical equipment vibration sound, delivering far more reliable noise reduction than standard acoustic cotton and eliminating indoor echo at source.

2. High Structural Integrity with Permanent Stable Acoustic Results

Thanks to advanced high‑pressure curing technology, the board features tight internal fibre bonding and robust monolithic structure. When fully filled into wall and ceiling cavities, it maintains consistent shape and density without sagging, collapsing or forming hollow gaps over time. This eliminates the gradual acoustic performance degradation commonly seen in low‑grade flexible infill materials, ensuring lifelong stable noise insulation and absorption.

3. Class‑A Fire Resistance & Acoustic Dual Compliance

While achieving outstanding acoustic performance, the material meets Class‑A1 non‑combustible building fire standards. Fully compliant with commercial interior fire codes, it satisfies the dual engineering demands of acoustic optimisation and fire‑safety approval, making it the preferred material for commercial interior renovation projects.

4. Hydrophobic & Mould‑resistant for Indoor Durability

The board possesses excellent hydrophobic properties, resisting moisture absorption, mould growth and material pulverisation under variable indoor humidity conditions. It maintains stable acoustic and physical performance long‑term, avoiding performance deterioration caused by damp indoor environments.

5. Flexible & Site‑friendly Installation with Full Cavity Coverage

Standardised board dimensions allow easy on‑site cutting and precise fitting. Fully compatible with traditional light‑steel partition systems and gypsum ceiling structures, it enables complete gap‑free cavity filling and ensures consistent full‑scale acoustic performance without weak insulation zones.

Technical Specifications

Standard Densities: 60 kg/m³, 80 kg/m³, 100 kg/m³, 120 kg/m³ (100–120 kg/m³ recommended for premium indoor acoustic projects)

Standard Thicknesses: 50 mm, 75 mm, 100 mm; custom thicknesses available on request

Standard Size: 1200×600 mm, bespoke non‑standard dimensions supported

Application Scope

Indoor fit‑out acoustic insulation, light‑steel partition cavity filling, ceiling noise reduction, office acoustic partitioning, retail space noise upgrading, hotel room sound insulation, meeting room reverberation control, training centre noise treatment and residential whole‑house acoustic renovation.

Manufacturer Advantages

Haochen is a professional manufacturer specialising in indoor acoustic insulation materials. All rock‑wool boards deliver stable acoustic coefficients and reliable long‑term noise reduction performance. Factory direct supply guarantees comprehensive size specifications and competitive availability. Combining professional sound absorption, sound insulation, thermal performance and Class‑A fire safety, Haochen Indoor Sound‑Absorbing Rock‑wool Board serves as a premium multi‑functional insulation solution for modern interior construction and renovation projects.