The Global Double Glazed Glass Market was valued at USD 21.37 Billion in 2023 and is projected to reach USD 29.43 Billion by 2030, growing at a Compound Annual Growth Rate (CAGR) of 4.6% during the forecast period (2024–2030). This robust growth is being fueled by stringent global energy efficiency regulations, rising demand for sustainable building materials, and increasing investments in green construction projects across residential and commercial sectors.

As the construction industry accelerates its transition toward net-zero carbon buildings, the focus intensifies on the key manufacturers and innovators providing advanced glazing solutions. In this blog, we profile the Top 10 Companies in the Double Glazed Glass Industry—a mix of global glass giants, specialized fabricators, and technology leaders shaping the future of energy-efficient building envelopes.

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🔟 1. Saint-Gobain

Headquarters: Courbevoie, France
Key Offering: Planitherm, Climalit, and Alienor high-performance double glazing units

Saint-Gobain is a world leader in the construction materials market, with a significant presence in the high-performance glass segment. Their double glazed units are engineered for superior thermal and acoustic insulation, serving both new construction and renovation markets globally.

Sustainability Initiatives:

• Commitment to achieving carbon neutrality by 2050

• Development of ultra-thin, high-insulation vacuum glazing

• Extensive use of recycled glass (cullet) in production processes

Download FREE Sample Report: Double Glazed Glass Market – View in Detailed Research Report

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9️⃣ 2. AGC Inc.

Headquarters: Tokyo, Japan
Key Offering: Fineo vacuum-insulated glass, Stopray solar control double glazing

AGC (formerly Asahi Glass) is a global glass manufacturing giant with advanced technologies in energy-saving glazing. Their product portfolio includes a wide range of double and even triple glazed units tailored for diverse climatic conditions and architectural requirements.

Sustainability Initiatives:

• Pioneering vacuum glazing technology for high-R-value performance

• Integration of smart glass technologies with double glazing systems

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8️⃣ 3. Nippon Sheet Glass Co., Ltd. (NSG Group)

Headquarters: Tokyo, Japan
Key Offering: Pilkington Insulight, Pilkington Spacia vacuum glazing units

The NSG Group, operating under the Pilkington brand, is a major global supplier of architectural and automotive glass. Their Insulight range of double glazed units is renowned for its thermal efficiency and noise reduction capabilities.

Sustainability Initiatives:

• Focus on lightweight, high-performance glazing to reduce embodied carbon

• Active participation in global green building certification programs (LEED, BREEAM)

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7️⃣ 4. Guardian Glass

Headquarters: Auburn Hills, Michigan, USA
Key Offering: Guardian ClimaGuard, SunGuard low-E double glazing

Guardian Glass is a leading global manufacturer of float glass and fabricated glass products. Their double glazed solutions are optimized for solar control and thermal insulation, catering to the commercial high-rise and residential markets.

Sustainability Initiatives:

• Investment in advanced coating technologies to enhance energy performance

• Global manufacturing footprint optimization to reduce logistics emissions

Download FREE Sample Report: Double Glazed Glass Market – View in Detailed Research Report

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6️⃣ 5. Vitro Architectural Glass

Headquarters: Pittsburgh, Pennsylvania, USA
Key Offering: Solarban, Sungate low-E coated insulating glass units

Vitro Architectural Glass is a key player in North America, offering a comprehensive portfolio of high-performance double glazed products. Their expertise lies in custom-sized, complex IGUs for landmark architectural projects.

Sustainability Initiatives:

• Sustainable manufacturing practices with significant water recycling

• Product Environmental Profile (PEP) declarations for transparency

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5️⃣ 6. Central Glass Co., Ltd.

Headquarters: Tokyo, Japan
Key Offering: C-U Glass, high-performance insulating glass units

Central Glass is a major Japanese manufacturer with a strong focus on advanced glazing technologies. The company supplies double glazed units to the construction and automotive industries across Asia and internationally.

Sustainability Initiatives:

• R&D in next-generation gas fills for improved thermal performance

• Development of anti-bacterial and self-cleaning glass coatings

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4️⃣ 7. SCHOTT AG

Headquarters: Mainz, Germany
Key Offering: PYRAN, Planibel speciality insulating glass

SCHOTT is a German multinational specializing in specialty glass and glass-ceramics. While known for technical glass, their architectural division produces high-specification double glazed units for demanding applications, including fire resistance and security.

Sustainability Initiatives:

• Innovation in fire-resistant and safety glazing within double glazed units

• Commitment to the Science Based Targets initiative (SBTi)

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3️⃣ 8. China Glass Holdings Limited

Headquarters: Jiangsu, China
Key Offering: Standard and low-E double glazed units

China Glass Holdings is one of the leading float glass producers in China, with a growing export business in fabricated glass products, including a significant volume of double glazed units for the domestic and international markets.

Sustainability Initiatives:

• Scaling up production of energy-efficient low-E glass

• Investment in more fuel-efficient furnace technology

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2️⃣ 9. Cardinal Glass Industries

Headquarters: Eden Prairie, Minnesota, USA
Key Offering: LoĒ², LoĒ³ coated insulating glass for windows and doors

Cardinal Glass is a major US-based manufacturer of insulated glass units, primarily supplying the residential window and door industry. They are a key partner for many leading window manufacturers across North America.

Sustainability Initiatives:

• Leadership in triple-pane, high-performance IGUs for Passive House standards

• Focus on argon gas retention and long-term seal durability

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1️⃣ 10. Sedak GmbH & Co. KG

Headquarters: Gersthofen, Germany
Key Offering: Extra-large format and specialty insulating glass units

Sedak specializes in the production of oversized and custom-designed insulating glass units for iconic architectural projects worldwide. Their technical expertise allows for double glazed units of exceptional size and performance.

Sustainability Initiatives:

• Specialization in jumbo-sized IGUs that reduce framing materials and improve whole-building efficiency

• Use of high-durability sealants for extended product lifespan

Read Full Report: Double Glazed Glass Market – View in Detailed Research Report

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🌍 Outlook: The Future of Double Glazed Glass Is Smarter and More Efficient

The double glazed glass market is undergoing a significant technological evolution. While standard air-filled units still command a large market share, the industry is rapidly advancing toward integrated smart technologies, vacuum insulation, and dynamic glazing solutions that respond to environmental conditions.

📈 Key Trends Shaping the Market:

• Accelerated adoption of triple glazing in cold climates for near-Passive House performance

• Integration of photovoltaic and electrochromic technologies within double glazed units

• Rise of Building Information Modeling (BIM) for optimized glazing specification and installation

• Stringent government building codes mandating higher energy performance standards

Read Full Report: Double Glazed Glass Market – View in Detailed Research Report

The companies listed above are not only supplying critical building components—they are actively enabling the global transition to energy-efficient and sustainable construction.