The Global Rock Wool Board for Curtain Wall Market was valued at USD 3.2 Billion in 2023 and is projected to reach USD 5.1 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 6.8% during the forecast period (2024–2030). This robust growth is fueled by stringent global building safety regulations, rapid urbanization, and the increasing emphasis on energy efficiency and fire-resistant construction materials for modern infrastructure.

As the construction industry pivots towards safer, more sustainable building envelopes, rock wool boards have become a cornerstone of modern curtain wall systems. These specialized insulation panels offer superior fire protection, thermal efficiency, and acoustic performance. This blog profiles the Top 10 Companies in the Rock Wool Board for Curtain Wall Industry—global manufacturers and innovators who are shaping the future of building safety and energy conservation.

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🔟 1. ROCKWOOL Group

Headquarters: Hedehusene, Denmark
Key Offering: ROCKWOOL Curtain Wall Slabs, High-Density Fire Protection Boards

The ROCKWOOL Group is the world’s leading manufacturer of stone wool insulation solutions. Their curtain wall slabs are engineered specifically for non-load bearing, ventilated facades, providing exceptional fire resistance (up to A1 non-combustible classification), thermal insulation, and sound absorption. With a global production network, they are a preferred supplier for high-rise and commercial projects worldwide.

Innovation and Sustainability Focus:

• Pioneering circular economy models with recyclable stone wool products

• Continuous R&D in bio-based and reduced-carbon footprint binders

• Global commitment to enhancing building energy efficiency standards

Download FREE Sample Report: Rock Wool Board For Curtain Wall Market – View in Detailed Research Report

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9️⃣ 2. Knauf Insulation

Headquarters: Shelbyville, Indiana, USA
Key Offering: Knauf Façade Roll, Earthwool Curtain Wall Slabs

Knauf Insulation is a major global player with a strong focus on sustainability. Their Earthwool® range of curtain wall slabs, made from ECOSE® Technology, offers superior fire performance (Euroclass A1) and is formaldehyde-free. They provide solutions tailored for both new construction and refurbishment projects across residential, commercial, and industrial sectors.

Innovation and Sustainability Focus:

• Proprietary ECOSE® Technology using bio-based binders

• Strong emphasis on reducing embodied carbon in insulation products

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8️⃣ 3. Saint-Gobain

Headquarters: Courbevoie, France
Key Offering: ISOVER Façade Roll, UTTIS Curtain Wall Panels

Operating through its ISOVER brand, Saint-Gobain offers a comprehensive range of mineral wool insulation for curtain walls. Their products are known for high thermal performance, fire safety, and durability. With a massive global footprint, they cater to complex architectural demands and stringent regional building codes.

Innovation and Sustainability Focus:

• Investment in high-recycled content glass wool production

• Development of multifunctional insulation systems combining thermal, acoustic, and fire protection

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7️⃣ 4. Owens Corning

Headquarters: Toledo, Ohio, USA
Key Offering: FOAMGLAS® & Fiberglass Insulation Systems for Curtain Walls

While renowned for fiberglass, Owens Corning also provides specialized insulation solutions suitable for curtain wall applications, particularly focusing on moisture resistance and long-term thermal performance. Their systems are designed to enhance the overall energy efficiency and durability of building envelopes.

Innovation and Sustainability Focus:

• Leadership in carbon reduction goals for manufacturing processes

• Product innovations aimed at improving indoor air quality and building lifecycle performance

Download FREE Sample Report: Rock Wool Board For Curtain Wall Market – View in Detailed Research Report

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6️⃣ 5. URSA Insulation

Headquarters: Madrid, Spain
Key Offering: URSA FAÇADE, Glass Wool Rolls and Slabs for Ventilated Façades

URSA, part of the Xella Group, is a leading European manufacturer of glass and mineral wool. Their URSA FAÇADE product line is specifically engineered for curtain walls, offering excellent fire reaction classification (A1) and high vapor permeability, which is critical for preventing moisture buildup in the wall assembly.

Innovation and Sustainability Focus:

• Focus on high-recyclability and use of recycled glass cullet

• Products certified under various international sustainability standards

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5️⃣ 6. Kingspan Group

Headquarters: Kingscourt, Ireland
Key Offering: Kooltherm & Panel Solutions for Façades

Kingspan is a global leader in high-performance insulation and building envelope solutions. While known for rigid boards, they offer integrated systems that work with curtain wall designs to achieve superior thermal breaks and overall building energy efficiency. Their focus is on reducing operational carbon through advanced insulation.

Innovation and Sustainability Focus:

• Ambition to achieve net-zero carbon manufacturing

• Pioneering insulation products with exceptionally low global warming potential (GWP)

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4️⃣ 7. Johns Manville

Headquarters: Denver, Colorado, USA
Key Offering: JM CladRoll, Fiber Glass Insulation for Commercial Walls

A Berkshire Hathaway company, Johns Manville manufactures a wide range of insulation products. Their solutions for commercial walls, including curtain wall cavities, provide thermal and acoustic benefits. They have a strong presence in the North American market and are expanding their global influence.

Innovation and Sustainability Focus:

• Commitment to sustainable manufacturing and product stewardship

• Development of formaldehyde-free and sustainable insulation materials

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3️⃣ 8. Paroc Group

Headquarters: Helsinki, Finland
Key Offering: PAROC Cortex, Stone Wool Slabs for Curtain Walls

Paroc specializes in stone wool insulation with a strong foothold in the Nordic and European markets. Their PAROC Cortex slabs are non-combustible (Euroclass A1) and designed specifically for ventilated façade systems, ensuring long-term stability, fire safety, and energy savings.

Innovation and Sustainability Focus:

• Focus on product durability and life cycle assessment (LCA)

• Initiatives to reduce energy consumption in production facilities

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2️⃣ 9. TechnoNICOL

Headquarters: Moscow, Russia
Key Offering: TECHNOFAS, Stone Wool Boards for Ventilated Façades

TechnoNICOL is one of the largest manufacturers of roofing and insulation materials in Eurasia. Their TECHNOFAS products are widely used in curtain wall systems across Russia and CIS countries, providing effective thermal insulation and fire protection compliant with regional standards.

Innovation and Sustainability Focus:

• Expansion of production capacities across Eastern Europe and Asia

• Investment in R&D for improved fire resistance and thermal performance

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1️⃣ 10. Promat International

Headquarters: Brussels, Belgium
Key Offering: PROMATECT®, High-Performance Fire Protection Boards

Promat is a global leader in passive fire protection. While their core expertise is in fire-resistant boards and systems, their products are integral to protecting the structural elements behind curtain walls in high-rise buildings. They provide certified solutions that ensure compliance with the most demanding fire safety regulations worldwide.

Innovation and Sustainability Focus:

• Specialization in ultra-high fire resistance ratings (up to 240 minutes)

• Development of lightweight, high-performance fire protection materials

Read Full Report: Rock Wool Board For Curtain Wall Market – View in Detailed Research Report

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🏗️ Outlook: The Future of Curtain Wall Insulation is Smarter and Safer

The rock wool board for curtain wall market is evolving beyond basic insulation. The focus is shifting towards multifunctional, high-performance materials that contribute to smarter, safer, and more sustainable buildings. The integration of digital tools for building performance modeling is also influencing product development and specification.

📈 Key Trends Shaping the Market:

• Rising stringency of international fire safety codes (e.g., EN 13501, NFPA)

• Growing demand for energy-efficient building envelopes to meet net-zero targets

• Increased use of Building Information Modeling (BIM) for precise material specification

• Development of thinner, higher-performance insulation boards to maximize interior space

Read Full Report: Rock Wool Board For Curtain Wall Market – View in Detailed Research Report

The companies highlighted above are not just supplying materials; they are providing the critical safety and efficiency backbone for the skylines of tomorrow.