Brief Description:High-compressive-strength roof rock wool board is rigid insulation for steel-structure roofs. It offers great point-load capacity, Class A1 fire resistance and good hydrophobic performance. Custom sizes available, factory direct supply for multiple roof insulation projects.

In steel-structure building roof systems and thermal-insulation projects for light-steel roof trusses, ordinary thermal-insulation rock wool commonly suffers from pain points such as insufficient strength, risk of collapse under foot traffic, large deformation under long-term load, and unqualified fire-proof and moisture-proof performance. It cannot meet the harsh working conditions of roof maintenance, equipment placement and long-term load-bearing for factory buildings.

Haochen high-compressive-strength roof rock wool board is a rigid reinforced rock wool thermal-insulation material tailor-made for steel-structure roofs. Different from common external-wall or general-purpose rock wool boards, it boasts ultra-high structural strength, stable load-bearing performance, and Class A1 fire and moisture resistance, and adapts to the integrated thermal-insulation and fire-protection construction requirements of various light-steel roof trusses and steel-structure factory roofs.

1. Differentiated Core Performance: Clearly Distinguished from Ordinary Roof Rock Wool on the Market

Most conventional roof rock wool products on the market only specify basic compressive parameters with weak performance, failing to adapt to the dynamic load conditions of steel-structure roofs. Haochen high-compressive-strength roof rock wool board features a high-strength rigid structure with precisely controlled core parameters. It should be noted that the compressive performance of this product is not limited to the conventional 60 kPa standard, and its core advantage lies in the ultra-high point-load bearing capacity, which thoroughly solves the problems of board deformation, damage and insulation layer collapse during the construction and operation of steel-structure roofs.

Optimised by high-density directional fiber-pressing technology, the board has closely and evenly arranged fibers with a solid, non-loose texture. Under the standard 5 mm deformation test, its point-load bearing capacity can reach 1000 N, far exceeding the conventional 300–800 N range of ordinary roof rock wool. The strong single-point load-bearing capacity can easily cope with scenarios such as roof inspection by personnel, placement of small equipment, and dynamic snow and wind loads. The board is resistant to denting, fracture and delamination, fundamentally avoiding hidden risks such as long-term compression relaxation, thermal insulation cavities and roof leakage of ordinary rock wool.

Unlike ordinary boards in the industry that simply benchmark against 40 kPa compressive strength, Haochen roof rock wool takes high point-load bearing as its core indicator, and balances overall compressive resistance, bending resistance and shear resistance. With stronger structural stability, it perfectly matches the mechanical characteristics of flexible roofs on light-steel trusses and long-span steel-structure roofs, making it a dedicated high-grade insulation substrate for steel-structure roof systems.

2. Rigid Structure Dedicated for Steel-Structure Roofs, Suitable for All Kinds of Roof Working Conditions

As a benchmark product of rigid roof rock wool, Haochen high-compressive-strength roof rock wool board abandons the soft texture of ordinary rock wool and adopts a high-pressure curing and forming process. The board features high overall hardness, excellent structural integrity and outstanding dimensional stability. For thermal-insulation scenarios of light-steel truss roofs, it can be laid closely against steel deck sheets and roof purlins, flat and free from hollowing, effectively adapting to the thermal expansion and cold contraction characteristics of steel-structure roofs, and will not crack, delaminate or fall off due to minor structural deformation.

It is widely applicable to roof systems of steel-structure workshops, warehouses, light-steel villas, large venues and other steel-structure buildings. Whether for new roof thermal-insulation projects, or thermal-insulation renovation, noise reduction and fire protection transformation of old factory roofs, it can deliver stable performance and meet the multiple demands of thermal insulation, structural load-bearing and safety protection.

3. Class A1 Fire Resistance & Hydrophobic Moisture Resistance, Adapted to Harsh Factory Roof Environments

As a professional fire-proof rock wool for factory roofs, this product is made of high-purity basalt raw materials, with its combustion performance reaching Class A1 non-combustible standard and stable fire resistance limit. It will not burn, produce molten drips or release toxic smoke when exposed to open flame, which can effectively block fire spread, meet the requirements of fire zone division and fire acceptance specifications for steel-structure roofs, compensate for the weak fire resistance of steel-structure buildings, and improve the overall fire safety grade of buildings.

Meanwhile, the board is equipped with hydrophobic modification, with a water-repellent rate of ≥98%. Rainwater, moisture and condensate on the roof cannot penetrate into the core material, eliminating problems such as water absorption and dampness of rock wool, attenuation of thermal insulation performance, mildew and pulverisation. When exposed to outdoor or semi-outdoor roof conditions for a long time, it can still maintain stable thermal insulation and structural strength, with a service life synchronized with that of the steel-structure roof system, greatly reducing later maintenance costs.

4. Core Product Advantages, Outperforming Conventional Roof Insulation Materials

- Ultra-high load-bearing capacity with wide working condition adaptability: High point-load performance, far exceeding that of conventional roof rock wool. Its performance is not defined by the 40 kPa compressive parameter. It will not deform or collapse under foot traffic inspection, equipment load and dynamic loads, and is suitable for full-scenario applications of steel-structure roofs.

- High-strength rigidity with more stable structure: Oriented dense fiber structure delivers excellent compressive resistance, bending resistance and tear resistance. The board has strong integrity, with no debris or loosening during construction cutting, and high flatness after installation.

- Integrated fire protection and thermal insulation: Class A1 fire retardant performance with low thermal conductivity, effectively blocking cold and heat transfer through the roof, reducing air conditioning and heating energy consumption of factories, while suppressing roof wind noise and equipment noise, with additional noise reduction function.

- Weather resistance and aging resistance with long service life: Resistant to high and low temperatures, humidity and mild acid-alkali corrosion, adapting to the complex climate of outdoor roofs. It will not shrink, pulverise or lose performance after long-term use.

- Convenient construction with strong adaptability: Standard-size boards can be cut on site according to demand, perfectly adapting to the splicing and laying processes of light-steel trusses and steel-structure roofs, with high construction efficiency and no construction dust pollution.

5. Core Application Scenarios

- Thermal insulation, fire protection and noise reduction projects for various industrial steel-structure roofs

- Thermal insulation and moisture protection projects for roofs of light-steel truss buildings

- Supporting construction of roof systems for large factories, warehouses, supermarkets and other steel-structure buildings

- Special rigid roof rock wool installation for roofs requiring foot traffic inspection and equipment placement

- Special fire-proof and thermal-insulation projects for factory roofs in industrial parks and high-rise buildings

6. Haochen Product Guarantee

Haochen high-compressive-strength roof rock wool board is custom-developed for steel-structure roof systems. It rejects the downgraded production process of generic products, and strictly controls fiber purity, pressing density and structural strength for each batch to ensure stable product performance and high batch consistency. Factory direct supply with standard sizes in stock, and custom production of non-standard thickness and density is supported. With full-cycle services such as free sample delivery and on-site roof construction technical guidance, it provides one-stop solutions to the core engineering pain points of thermal insulation, fire protection, load-bearing and durability for steel-structure and light-steel truss roofs.