The Global Glass Roof Insulation Market was valued at USD 2.38 Billion in 2022 and is projected to reach USD 3.41 Billion by 2029, growing at a Compound Annual Growth Rate (CAGR) of 5.3% during the forecast period (2023-2030). This growth is being driven by increasing green construction projects, stringent energy efficiency regulations, and the rising adoption of sustainable building materials across commercial and residential sectors.

As architects and builders prioritize thermal performance and carbon reduction, glass-based insulation solutions have emerged as a critical technology for modern roofing systems. In this comprehensive analysis, we examine the Top 10 Companies in the Glass Roof Insulation Industry—global manufacturers and innovators developing advanced thermal management solutions for 21st century construction challenges.

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🔟 1. Knauf Insulation

Headquarters: Iphofen, Germany
Key Offering: Glass Mineral Wool, ECOSE® Technology Products

Knauf Insulation leads the European market with its sustainable glass wool solutions, holding approximately 18% of the global market share. Their roofing insulation products achieve thermal conductivity as low as 0.032 W/mK while containing up to 80% recycled glass content.

Technical Advantages:

• Binder-free ECOSE® technology for formaldehyde-free production

• 10 manufacturing plants dedicated to glass wool production

• Closed-loop water recycling systems across all facilities

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9️⃣ 2. Saint-Gobain (ISOVER)

Headquarters: Courbevoie, France
Key Offering: ISOVER Glass Wool, ULTIMATE Range

Saint-Gobain’s insulation division supplies over 35 countries, with their ISOVER brand holding 22% of the European market. Their fire-resistant glass wool (Euroclass A1) reduces building energy consumption by up to 65% in roof applications.

Recent Innovations:

• Lightweight solutions (as low as 9kg/m³ density)

• Mono-Injection technology for uniform fiber distribution

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8️⃣ 3. Owens Corning

Headquarters: Toledo, Ohio, USA
Key Offering: PINK® Fiberglass, FOAMGLAS® Insulation

Owens Corning commands a 19% share of North America’s roofing insulation market. Their FOAMGLAS cellular glass insulation provides both thermal performance (0.041 W/mK) and waterproofing for flat roof systems.

Performance Benchmarks:

• 53% recycled content in standard fiberglass insulation

• ROOFMATE® boards with 60-year proven durability

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7️⃣ 4. Johns Manville

Headquarters: Denver, Colorado, USA
Key Offering: Microlite®, Spundglas® HD Insulation

This Berkshire Hathaway company specializes in high-density (up to 96kg/m³) glass roof insulation for extreme climates. Their Spundglas HD maintains R-values under continuous moisture exposure.

Technical Specifications:

• Thermal conductivities from 0.023-0.035 W/mK

• ASTM C795 compliant for use over steel decks

Download FREE Sample Report: Glass Roof Insulation Market – View in Detailed Research Report

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6️⃣ 5. Rockwool International

Headquarters: Hedehusene, Denmark
Key Offering: Hybrid Glass-Mineral Wool Solutions

While primarily a stone wool producer, Rockwool offers specialized glass-mineral blends for roof applications requiring temperatures up to 1000°C. Their Dual Density technology combines performance layers in single boards.

Certifications:

• Non-combustible (Euroclass A1) certification

• LEED contribution credits available

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5️⃣ 6. Kingspan Group

Headquarters: Kingscourt, Ireland
Key Offering: Kooltherm K7, Vacuum Insulated Panels

Kingspan’s advanced insulation boards achieve remarkable thermal performance (0.018 W/mK) in slim profiles critical for retrofit applications. Their products integrate seamlessly with photovoltaic roofing systems.

Environmental Features:

• 90% post-consumer recycled glass content

• Plant-based blowing agents in manufacturing

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4️⃣ 7. URSA Insulation

Headquarters: Madrid, Spain
Key Offering: URSA Terra, Glasswool Roof Rolls

URSA specializes in flexible glass wool solutions for complex roof geometries, with products containing 60-70% recycled glass. Their Terra range achieves Lambda 0.032 W/mK thermal performance.

Circular Economy Programs:

• Construction waste take-back initiative

• Low-emission manufacturing certification

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3️⃣ 8. Lydall Performance Materials

Headquarters: Manchester, Connecticut, USA
Key Offering: Ultra-Thin Glass Mat Insulation

Lydall produces high-temperature resistant glass fiber mats (up to 120mm thickness) used beneath single-ply membranes. Their products show 95% compression recovery after load removal.

Industrial Applications:

• Metal roof underlayment solutions

• HVAC-compatible thermal barriers

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2️⃣ 9. Superglass Insulation

Headquarters: Stirling, United Kingdom
Key Offering: Loft Roll 44, High Performance Rolls

Superglass holds 30% of the UK residential roof insulation market with products certified to BS EN 13162 standards. Their acoustic insulation reduces noise transmission by up to 62dB.

Product Features:

• Thermal conductivity of 0.044 W/mK

• Non-combustible Euroclass A1 rating

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1️⃣ 10. CertainTeed Corporation

Headquarters: Malvern, Pennsylvania, USA
Key Offering: Complete Roof Insulation Systems

This Saint-Gobain subsidiary provides integrated solutions including vapor barriers and air-sealing components. Their reflective insulation products achieve up to 78% solar reflectance.

System Advantages:

• Green roof system compatibility

• Energy Star certified products

Get Full Report Here: Glass Roof Insulation Market – View in Detailed Research Report

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🏗️ Outlook: The Future of Glass Roof Insulation Technology

The glass roof insulation sector is undergoing rapid transformation as global building codes mandate 30-50% better thermal performance in new construction. Manufacturers are responding with innovative materials and smart insulation systems.

📈 Key Market Trends to Watch:

• Aerogel-enhanced glass wool with 25% improved R-values

• Phase-change material integration for thermal mass

• Automated manufacturing reducing production costs by 15-20%

• Growing retrofit market in Europe and North America

Get Full Report Here: Glass Roof Insulation Market – View in Detailed Research Report

These industry leaders are not just manufacturing insulation—they’re pioneering the next generation of high-performance, sustainable building envelopes through advanced material science and circular manufacturing processes.