Insulated Mineral Wool Sandwich Panels for Buildings

Mineral Wool Sandwich Panel

Mineral wool sandwich panels combine three layers for fire-resistant construction: galvanized or aluminum corrugated sheets (0.3-0.8 mm thick) encase a high-density basalt rock wool core (110-120 kg/m³). The mineral wool features perpendicular fiber orientation and open cell structure for enhanced mechanical strength, with polyurethane edge sealing for structural integrity.

These panels deliver superior fire protection with Euroclass (EI) 90-120 ratings and A2-s1,d0 reaction classification. Thermal performance reaches U-values as low as 0.14 W/m²K, while acoustic insulation exceeds 30 decibels (dB) for 50 mm thickness. The panels maintain dimensional stability across temperature and humidity variations.

Available in core thicknesses from 50-300 mm and lengths up to 15,000 mm, panels feature S250GD steel cladding with polyester or Aluzinc coatings. Effective widths are 1000 mm or 1100 mm, with weights ranging from 15.5-41.8 kg/m². Thermal conductivity (λD) measures 0.043 W/mK. Cladding profiles include lined, grooved, plain, and micro-profile options with secret fixing or exposed lock joint systems.

Applications span industrial facilities, warehouses, commercial offices, and agricultural structures for external walls, internal partitions, and roof systems. European Norm (EN) 14509 certification ensures compliance, while prefabricated components reduce construction time by over 40%. The basalt rock core supports sustainability through natural, recyclable materials.

Your Mineral Wool Sandwich Panel Manufacturer

Most of our customer conversations start off with the same question, “How much do your panels cost?” We find after our first call or meeting that our customers are seeking a great deal more. Generally, our customers are trying to grow their business by expanding their facilities, searching for reliable, high-performance building solutions, and looking for a fair price on panels that won’t compromise on safety or efficiency. We know how you feel.

At RaxPanel, we are more than just a manufacturer; we are your dedicated partner in optimizing the performance and durability of your Mineral Wool Sandwich Panels. Our panels feature a high-density rock wool core that delivers key advantages directly backed by our expertise:

Fire Safety, with non-combustible properties that protect life and property, thanks to our stringent production controls.
Sound Insulation, providing excellent acoustic comfort by blocking external noise, a benefit of our precise manufacturing processes.
Thermal Performance, ensuring energy efficiency and cost savings, achieved through our in-house R&D.
Fast Construction, with pre-engineered designs for quick installation, supported by our efficient production lines.
Long Life, guaranteeing over 25 years of reliable service, a result of our strict quality management.

Backed by over 20 years of experience since our founding in 2002, RaxPanel, based in Hebei, China, serves clients in 30+ countries with daily production of 1500+ m². We focus on custom composite panel solutions, offering manufacturing and supply with in-house R&D and design to ensure every panel meets your needs. We share our knowledge and resources to help you succeed.

Call RaxPanel: we are proud to offer more than a product. We offer a real solution!

Parameter	Value	Unit
Core Material	Mineral wool (basalt rock wool)	–
Core Density	110 – 120	kg/m³
Cladding Thickness	0.3 – 0.8	mm
Steel Grade	S250GD	–
Coatings	Polyester, Aluzinc	–
Effective Width	1000, 1100	mm
Panel Length	Up to 15,000	mm
Core Thickness Range	50 – 300	mm
Panel Weight	15.5 – 41.8	kg/m²
Thermal Conductivity (λD) of Core	0.043	W/m·K
Thermal Transmittance (U-value)	0.14 – 0.63	W/m²·K
Acoustic Insulation	>30 (for 50 mm thickness)	dB
Fire Resistance Rating	EI 90, EI 120	–
Reaction to Fire	A2-s1,d0	–
Corrosion Resistance	C1, C2, C3	–
Panel Joint Detail	Exposed lock, secret fixing	–
Cladding Profile Types	Lined, Grooved, Plain, Micro-profile	–
Certifications	EN 14509	–

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Frequently Asked Questions

What are the fire resistance properties of RaxPanel Mineral Wool Sandwich Panels?

RaxPanel Mineral Wool Sandwich Panels are non-combustible and offer high fire resistance, with ratings up to EI 240 in horizontal arrangements and EI 180 in vertical arrangements. They have a reaction to fire classification of A2-s1,d0, making them suitable for projects requiring above-standard fire protection.

How effective is the thermal insulation of Mineral Wool Sandwich Panels?

The panels provide excellent thermal insulation, with thermal transmittance U-values as low as 0.14 W/m²K for thicker cores. The mineral wool core has a thermal conductivity (λ) of approximately 0.043 W/mK, ensuring efficient temperature regulation and energy savings.

Do Mineral Wool Sandwich Panels offer sound insulation?

Yes, these panels deliver superior acoustic performance, with sound insulation levels exceeding 30 dB for a 50 mm thickness. The mineral wool core effectively absorbs and blocks noise, making them ideal for environments like workshops, concert halls, and residential buildings.

What are the common applications for RaxPanel Mineral Wool Sandwich Panels?

These panels are versatile and can be used for external walls, internal partition walls, ceilings, and roofs in industrial buildings, warehouses, commercial offices, food industry facilities, agricultural structures, and sports halls. They are suitable for both single-span and multi-span systems.

What specifications are available for thickness, density, and sizes?

RaxPanel offers core thicknesses from 50 mm to 300 mm, with mineral wool density typically 110-120 kg/m³. Panel lengths range from 2500 mm to 15000 mm, effective widths of 1000 mm or 1100 mm, and steel cladding thicknesses from 0.3 mm to 0.8 mm.

How is the installation process, and does it accelerate construction?

Installation is fast and flexible, with panels produced according to building layouts. The construction period can be shortened by over 40% due to easy vertical or horizontal mounting on frames, using hidden joints for an aesthetic finish and efficient assembly.

What is the lifespan and durability of Mineral Wool Sandwich Panels?

These panels are highly durable, with a lifespan of up to 25 years. Made from stable mineral wool resistant to temperature and humidity changes, they maintain performance over time, backed by international quality standards and rigorous production processes.

How can you support our need for a dependable supply chain in large-scale manufacturing projects?

As a direct manufacturer with over 20 years of experience, we maintain a robust production system capable of handling high-volume orders. Our in-house facilities, with a daily output exceeding 1500 m², ensure consistent quality and reliable supply. We serve clients in over 30 countries, leveraging efficient logistics to meet tight deadlines and support long-term partnerships. The panels are produced under strict quality management systems, guaranteeing stability for OEMs and distributors requiring bulk pricing and uninterrupted availability.

What advantages do these panels offer for contractors looking to reduce installation time and ensure project longevity?

The panels are designed for fast and flexible installation, potentially shortening construction periods by over 40% due to their lightweight yet durable composition. They feature a mineral wool core that provides non-combustible fire resistance (e.g., EI ratings up to 240), excellent acoustic insulation (over 30 dB), and thermal efficiency (U-values as low as 0.14 W/m²K). With a lifespan of up to 25 years, the panels resist temperature and humidity changes, ensuring long-term performance for commercial, industrial, and prefabricated buildings without on-site modifications.

What resources are available for engineers and architects to specify these panels accurately in their designs?

We provide comprehensive technical documentation, including detailed data sheets with fire resistance classifications (e.g., A2-s1,d0), acoustic performance metrics, and U-value calculations. CAD models and BIM library resources are available to facilitate integration into project blueprints. Our panels are certified to EN standards, such as EN 14509 for self-supporting sandwich panels, and we offer material samples to verify compatibility. This support helps specifiers meet regulatory requirements and innovate with confidence in applications like facades, roofs, and partition walls.