Brief Description:Haochen Insulation High Temperature A1 Fire Resistant Black Rock Wool Board is a Euroclass A1 non-combustible dedicated fireproof insulation material for building smoke control and HVAC ventilation duct systems. Optimized to solve the high-temperature shrinkage, cracking and delamination defects of traditional yellow rock wool, it adopts upgraded mineral formula with basalt, dolomite and premium haematite, featuring natural black-brown texture without artificial dyeing. With over 1000C high temperature resistance, excellent vibration resistance, 98% water repellency, low thermal conductivity and stable structural performance, it integrates fire protection, thermal insulation and sound absorption. Widely used for fire cladding, heat insulation and fire stopping of smoke extract ducts, pressurised air-supply ducts and HVAC ducts in high-rise buildings, commercial complexes, hospitals, industrial plants and rail transit projects. Factory direct supply, customizable size, density and thickness.

Haochen Insulation Fire‑Resistant Black Rock‑wool Board is a Euroclass A1 non‑combustible dedicated fire‑proof insulation material developed for building smoke‑control and ventilation duct systems. It is mainly used for fire‑resistant cladding, thermal‑acoustic insulation and through‑penetration fire‑stopping of smoke‑extract ducts, pressurised air‑supply ducts and HVAC ventilation ducts.

Addressing industry drawbacks of conventional yellow rock‑wool including poor high‑temperature resistance, thermal shrinkage‑cracking under heat, fire‑time delamination and insufficient fire‑resistance stability, Fire‑Resistant Black Rock‑wool Board adopts an optimised mineral formulation and upgraded manufacturing process. It delivers comprehensive improvements in fire‑resistance performance, high‑temperature dimensional stability, vibration resistance and moisture‑proof properties, making it a high‑spec upgraded alternative material for modern building HVAC fire‑safety projects.

With over ten‑year expertise in fire‑safe insulation materials, Haochen Insulation applies well‑proportioned raw‑material formulas and standardised production procedures. Fire‑Resistant Black Rock‑wool Board is melted from high‑melting‑point minerals such as basalt and dolomite, with scientifically blended premium haematite. It features natural black‑brown texture with no artificial dyeing. Its fine, dense fibres form a robust, compact structure. Compared with standard rock‑wool, it offers a higher melting point, lower thermal‑shrinkage rate and superior structural stability. Fully complying with technical specifications for smoke‑control and smoke‑ventilation systems, it is perfectly suited for long‑term fire‑safety operating conditions of various building ductwork.

Thanks to its outstanding overall performance and reliable fire‑test compliance, Fire‑Resistant Black Rock‑wool Board has been widely deployed in medium‑to‑large‑scale fire‑safety ventilation projects including high‑rise buildings, commercial complexes, office blocks, underground car parks, hospitals, schools, industrial plants and rail‑transit facilities. It has become a preferred mainstream material for fire‑resistant cladding of building ductwork.

Core Performance Advantages

1. Euroclass A1 Non‑combustible, Reliable Fire‑safety Compliance Manufactured from fully inorganic mineral ingredients, the board achieves Euroclass A1, the highest non‑combustibility rating. When exposed to fire, it prevents flame spread, generates no molten drips, produces low‑smoke output and releases no toxic fumes. It fundamentally eliminates hazards such as duct‑aided combustion and flame propagation along ductwork, fully satisfying fire‑acceptance requirements for smoke‑ventilation duct systems in buildings.

2. High‑temperature Tolerance above 1000 °C, No Thermal Shrinkage or Fire‑induced Collapse Boasting a melting point exceeding 1000 °C, the product is specially optimised for harsh service conditions: sustained high‑temperature exhaust‑gas heating, long‑term flue‑gas scouring and extreme fire heat. Under high‑temperature exposure, the panel will not shrink, crack, pulverise or detach. It maintains a complete, sealed fire‑protective layer throughout fire exposure, effectively blocking flame and hot flue‑gas penetration and preserving the fire‑resistance integrity of ductwork.

3. Compression & Vibration‑resistant Structure for Dynamic Duct Operating Conditions Constructed with high‑density three‑dimensionally interlocked fibre architecture, the board delivers high structural integrity and rigidity. It withstands long‑term wind‑pressure impact, airflow buffeting and equipment resonance of ventilation duct systems. No delamination, hollowing or collapse occurs after prolonged cladding service. Its fire‑resistance and thermal‑insulation performance remain stable over time, matching year‑round dynamic operation of duct systems.

4. Combined Thermal Insulation & Sound Absorption, Multi‑functional High‑value Solution With thermal conductivity as low as 0.040 W/(m·K), it provides excellent thermal‑insulation performance, restraining outward heat transfer and cutting thermal energy loss of HVAC systems. Its porous fibre structure effectively absorbs duct‑borne wind noise and airflow friction noise. Integrating fire protection, thermal insulation and sound‑absorption in one product, it greatly enhances comprehensive performance of duct assemblies.

5. Superior Water‑repellent, Moisture‑proof & Anti‑corrosion Properties for Demanding Environments Water‑repellent rate ≥ 98 %. It features ultra‑low moisture absorption, condensation resistance and anti‑corrosion capability. It performs reliably in humid environments including concealed‑ceiling condensation, damp underground car‑park spaces and duct condensate‑water accumulation. Resistant to moisture‑driven mould growth, it will not corrode duct steel sheets and extends the whole‑system service life of ductwork, outperforming general‑purpose insulation rock‑wool under challenging site conditions.

Main Application Scenarios

Fire‑Resistant Black Rock‑wool Board is widely applied to fire‑resistant cladding for smoke‑extract ducts, fire‑protection thermal insulation for pressurised air‑supply ducts, thermal‑insulation & noise‑reduction for HVAC ventilation ducts, fire‑stopping at duct wall‑penetration openings, moisture‑proof fire protection for underground‑car‑park ductwork. Suitable for new‑build and refurbishment fire‑safety‑ventilation projects within commercial complexes, high‑rise office buildings, hospitals and industrial plants.

Manufacturer Product Assurance

Haochen Fire‑Resistant Black Rock‑wool Board is supplied direct from original manufacturer. It features low slag‑ball content, evenly distributed fibres and consistent performance across production batches. All technical indicators comply with relevant duct fire‑protection specifications. Ample stock is maintained onsite. Custom options for non‑standard thickness, density and dimensions are available. Professional material‑selection and specification‑selection technical guidance is offered according to project fire‑resistance rating and duct operating conditions, delivering one‑stop material‑sourcing and supporting solutions for fire‑resistant cladding projects of smoke‑ventilation ductwork.