Brief Description:Vertical fibre rock wool board is Class A fireproof external wall insulation with vertical fibre structure. Boasting high pull resistance, anti-delamination, hydrophobic and sound absorbing performance. Available in standard sizes and custom thicknesses for high-rise, curtain wall and building renovation projects.

Haochen Vertical Fibre Rock Wool Board (Oriented Vertical Fibre Rock Wool Board), also known as exterior wall rock wool fire barrier and high tensile & compressive rock wool board, is a high-strength fire-resistant thermal insulation base material for external walls independently developed by Haochen Insulation. Manufactured from premium natural basalt ore, it adopts advanced pendulum oriented fibre forming and integral curing technology, thoroughly resolving common engineering defects of conventional horizontal-fibre rock wool boards such as loose structure, insufficient tensile strength, delamination, fibre shedding, deformation and peeling under compression. Boasting excellent mechanical properties, Class A non-combustible fire rating and long-term stable thermal insulation performance, the product is widely applied in external thin render thermal insulation systems for building facades, curtain wall cavity fire filling and floor fire barrier projects. It is fully suitable for thermal and fire insulation projects including newly built high-rise residential buildings, commercial complexes, industrial plants and energy-saving retrofits of aged buildings.

2. Manufacturing Process & Structural Characteristics

Traditional rock wool boards adopt horizontally laid fibres with loose internal structure and poor integrity. Haochen Oriented Vertical Fibre Rock Wool Board utilises 3D continuous vertical fibre forming technology. Fibres are regularly arranged perpendicular to the board surface, delivering a dense and compact interior free of delamination, voids and loose wool filaments. It fundamentally addresses industry challenges of conventional boards such as shrinkage deformation, powder shedding and unstable structure.

The high tensile-compressive grade vertical fibre rock wool board is refined via dedicated oriented fibre technology and multi-stage curing process, featuring greatly enhanced vertical pull resistance and plane compressive performance. The board surface is flat and uniform with stable hardness, offering outstanding compatibility with exterior wall adhesive mortar and anti-crack protective mortar for tight and reliable bonding. After installation, it resists hollowing, cracking and detachment. It can withstand strong external wind pressure, thermal deformation and minor wall settlement over long service life. The formed external thermal insulation and fire protection system achieves far superior stability and durability compared with ordinary horizontal-fibre rock wool panels.

3. Fire Safety Performance

All vertical fibre rock wool boards meet Class A non-combustible requirements with excellent refractory performance and high temperature resistance. Made of purely inorganic mineral materials, the product will not ignite under open flame, produces no molten drips and releases no toxic or harmful flue gases, delivering outstanding flame retardancy, fire separation and smoke suppression effects.

The board can be used directly as the primary thermal insulation layer for external walls, or as dedicated material for floor fire barriers and curtain wall fire stopping. It effectively blocks vertical flame spread along exterior wall insulation layers and prevents fire cross-floor propagation. All performance indicators satisfy mandatory requirements of building fire codes. Complete fire and energy-saving test documentation is available to facilitate site sampling inspection, fire assessment and overall project acceptance.

4. Thermal Insulation, Water Repellency & Multi-functional Properties

Vertical fibre rock wool boards undergo full vacuum hydrophobic impregnation treatment for robust overall water repellency. Rainwater, wall condensation and moisture cannot penetrate into the fibre matrix, eliminating issues including weight gain upon wetting, elevated thermal conductivity and degraded insulation performance. Thermal performance remains stable all year round to continuously reduce building energy consumption with long-lasting energy-saving effects.

The unique 3D porous vertical fibre structure provides excellent sound absorption, attenuating outdoor traffic noise and wind noise to improve indoor comfort for residential and office spaces. The product is ageing-resistant, UV-resistant, corrosion-resistant and weatherproof. It contains no formaldehyde or hazardous substances, making it environmentally safe, with a service life matching that of the main building structure.

5. Core Advantages of High Tensile & Compressive Upgraded Grade

Engineered for demanding construction conditions such as high-rise buildings, windy coastal zones and cold regions, the upgraded high tensile-compressive vertical fibre rock wool board adopts high-density compaction moulding technology. Its compression, impact, deformation and strong wind-load resistance are comprehensively enhanced, perfectly fitting high-spec projects including high-rise external thin render systems, curtain wall cavity filling and irregular fire stopping.

The board is easy to cut with neat, burr-free surfaces. Whether for large-area full external wall paving or detailed finishing around window openings, wall corners and internal/external angles, it closely adheres to the substrate for efficient construction and smooth, attractive finishes, improving the overall quality and visual effect of external thermal and fire insulation projects.

6. Product Specifications

Standard dimension: 1200 × 150 mm Available thickness: 30mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 120mm, 150mm Custom service: Non-standard thickness, density and dimensions available upon request

7. Manufacturer Strength & Service Advantages

Haochen Insulation is the original manufacturer of Vertical Fibre Rock Wool Board (Oriented Vertical Fibre Rock Wool Board), equipped with fully automatic integrated rock wool production lines. We specialise in the R&D, production and sales of the full series of external wall fire insulation products: vertical fibre rock wool boards, oriented vertical fibre rock wool boards and high tensile-compressive rock wool boards. Standard engineering specifications are kept in stock for bulk supply to projects of all sizes.

Strict full-process quality control is implemented throughout production. Factory direct supply with no middlemen. Free engineering material selection proposals, external wall layout design and on-site construction technical guidance are provided to support project implementation. We supply high-stability, premium vertical fibre rock wool thermal and fire insulation materials to safeguard building energy-saving, fire protection and thermal insulation projects of all types.