Rock wool blanket (also called rock wool roll or felt) is a flexible, high-performance insulation material made from natural basalt via high-temperature melting and fiber forming. Widely trusted for global construction, industrial and HVAC projects, it stands out for reliable fire resistance, thermal efficiency and long service life. This article covers its core properties, typical uses, standard specifications and key advantages for engineering and procurement teams.
Core Properties of Rock Wool Blanket
Rock wool blanket meets strict international industrial and building insulation standards, with four core strengths that make it a top choice over common insulation alternatives:
1. A1 Non-Combustible & Excellent High-Temperature Resistance
As an inorganic fiber product, rock wool blanket holds A1 non-combustible certification, with a melting point above 1000℃. It does not ignite, spread fire or release toxic fumes, serving as a safe fire barrier for petrochemical plants, industrial furnaces and public buildings, fully complying with global fire safety rules.
2. Outstanding Thermal Insulation Performance
With a thermal conductivity of 0.035-0.045 W/m·K at room temperature, it blocks heat transfer efficiently in both high and low-temperature environments. It cuts building energy use for heating and cooling, lowers long-term operating costs, and supports green and energy-saving project standards.
3. Sound Absorption & Flexible Construction Adaptability
Its porous fiber structure delivers strong sound absorption, reducing noise and echoes for quieter indoor and semi-indoor spaces. Soft and rollable, it is far more flexible than rigid rock wool boards, easy to cut and wrap around curved pipes, tanks and irregular surfaces, enabling fast, tight installation with no thermal bridges.
4. Moisture-Resistant, Corrosion-Proof & Eco-Friendly
Quality rock wool blanket has a water absorption rate below 5%, with good dimensional stability, mold and corrosion resistance. It lasts 15-20 years without performance loss, even in humid conditions. Free of asbestos, formaldehyde and heavy metals, it is non-toxic and meets EU REACH eco-standards, perfect for green building projects.
Common Applications & Standard Specifications
Rock wool blanket is widely used in residential, commercial and industrial sectors: building wall and roof insulation, HVAC and process pipe wrapping, industrial equipment protection, public venue soundproofing, and storage tank or marine insulation.
Standard specifications fit most global projects: thickness 20-100mm, width 600-1200mm, roll length 10-20m, density 60-120kg/m³. Custom sizes are available for bulk orders, and aluminum foil facing can be added for better moisture resistance and heat reflection, ideal for outdoor and HVAC use.
Looking for reliable rock wool blanket for your project? Contact us today for free samples, detailed product parameters and competitive quotes. We support global bulk shipping, ensure strict quality control, and provide tailored insulation solutions to match your project needs.
Post time: Mar-19-2026
