As the building industry continues to raise expectations for energy efficiency and durability, exterior envelope systems are increasingly required to integrate thermal insulation, fire resistance, and moisture protection in a single solution. CCEWOOL® Stone Wool Board 80, a premium mineral wool board, meets these evolving demands with excellent thermal stability, high breathability, and A1 non-combustibility, making it a preferred choice for continuous exterior wall insulation in modern architecture.

Key Performance Features: Stable R-Value for Enhanced Thermal Performance

Consistent R-Value Over Time
Manufactured from high-density natural mineral fibers and free from any foaming agents, Stone Wool Board 80 resists shrinkage and deformation throughout its service life. It maintains a stable thermal resistance (R-value), effectively blocking heat transfer and delivering long-term energy savings.
Eliminates Thermal Bridging in Composite Systems
When used as an exterior continuous insulation layer in conjunction with cavity-filled mineral wool insulation, this board significantly enhances the system’s overall R-value. It prevents thermal bridging at structural joints, thereby optimizing the envelope’s thermal efficiency.

Integrated Protection: Fire Resistance, Moisture Control, and Acoustic Comfort

A1 Non-Combustibility Rating
Classified as a non-combustible material, Stone Wool Board 80 does not emit smoke or contribute to fire propagation, even under direct flame or high temperatures, greatly enhancing building safety.
Breathable and Moisture-Resistant
With excellent vapor permeability, the board allows internal moisture to escape quickly, reducing the risk of condensation, mold growth, or structural damage.
Superior Acoustic Performance
Its porous fiber matrix significantly reduces both airborne and structure-borne noise, helping create quieter and more comfortable residential and commercial environments.

Multi-Layered System Design: Coordinated Barriers to Ensure Building Integrity

In a typical ventilated façade system, CCEWOOL® Stone Wool Board 80—one of the core products in the CCEWOOL® rock wool board lineup—serves as the primary insulation layer. It plays a critical role in the following layered structure:
Weather-Shedding Surface (WSS): The outermost layer—comprising brick, cladding, or rendered finishes—quickly channels rainwater away from the wall.
Ventilated Cavity: The vertical air gap between WSS and insulation promotes moisture evaporation and air circulation, keeping the wall system dry.
Exterior Insulation Layer: CCEWOOL® Stone Wool Board 80 is installed directly behind the ventilated cavity, combining high thermal resistance with secondary drainage functionality.
Water-Resistive Barrier (WRB): A breathable membrane behind the insulation prevents liquid water ingress while allowing vapor diffusion, preserving structural integrity.
Cavity Insulation: Mineral wool boards or other insulation products are placed within framing cavities to further enhance thermal performance.
Airtight Layer: Sealing tapes, architectural details, and window assemblies prevent uncontrolled air leakage and thermal loss, completing the airtight envelope.

As a high-performance mineral wool board in the CCEWOOL® exterior wall system, Stone Wool Board 80 not only fulfills modern construction requirements for thermal insulation, durability, and fire safety but also integrates seamlessly with cavity insulation products. Its advanced thermal performance and structural compatibility make it a key component in achieving energy-efficient, code-compliant, and resilient building envelopes.

Customer Testimonial

Peruvian Customer
Cooperation Years: 8 years
Ordered Product: CCEWOOL® Stone Wool Board

Since our first collaboration with CCEWOOL® in 2017, we’ve built a strong partnership over the past eight years. Throughout this time, we’ve come to deeply appreciate CCEWOOL®’s professional expertise and global mindset as a brand with over 20 years of industry heritage.

With each successive project, we have gained a more comprehensive understanding of CCEWOOL®’s strengths in product quality consistency, technical responsiveness, and global service capabilities. The company has established a solid foundation in China while also building a robust warehousing and distribution network across North America and other international markets. As a result, every order of CCEWOOL® Stone Wool Board has been fulfilled with high efficiency and reliability.

The trust developed through years of collaboration has made CCEWOOL® a dependable long-term partner and has laid a solid foundation for deepening our cooperation in future projects.