Pre Fabricated Glass Block

Pre Fabricated Glass Block Market Outlook

The global pre fabricated glass block market is anticipated to reach approximately USD 1.2 billion by 2035, expanding at a compound annual growth rate (CAGR) of about 6% during the forecast period from 2025 to 2035. The rising demand for aesthetic and versatile architectural solutions in residential, commercial, and industrial sectors is a primary growth driver for this market. Moreover, the increasing inclination towards energy-efficient building materials is expected to bolster market growth. Additionally, innovations in manufacturing processes and a growing trend toward sustainable construction practices are likely to propel the adoption of glass blocks over traditional building materials. As urbanization increases globally, there is an urgent need for efficient space utilization, which is another significant factor fueling the demand for prefabricated glass solutions.

Growth Factor of the Market

The pre fabricated glass block market benefits immensely from various growth factors that catalyze its adoption across different regions and segments. One of the prime growth drivers is the increasing focus on sustainable building materials, as glass blocks provide superior insulation properties while allowing natural light to permeate spaces, thereby reducing energy consumption. Furthermore, the rise in urbanization and population density has led to an urgent demand for innovative architectural solutions that optimize space without compromising aesthetics. The versatility of glass blocks in design, enabling them to be used in facades, partitions, and decorative elements, also contributes significantly to their market appeal. Additionally, advancements in technology and manufacturing processes have led to the production of more durable and customizable glass block options, enhancing their usability in various applications. Lastly, the growing awareness regarding the benefits of using glass blocks in noise reduction and thermal insulation is driving their acceptance in residential as well as commercial building projects.

Key Highlights of the Market

• Projected market size of USD 1.2 billion by 2035.
• CAGR of approximately 6% from 2025 to 2035.
• Strong demand driven by sustainable building practices.
• Versatile applications in various architectural settings.
• Technological advancements improving product offerings.

By Product Type

Clear Glass Block:

Clear glass blocks are the most commonly used type in various construction applications owing to their ability to allow natural light while providing privacy. They are favored for their aesthetic appeal, and their transparent nature makes them suitable for both interior and exterior use. These blocks are often utilized in residential buildings for walls or partitions, enabling homeowners to create inviting spaces without sacrificing light. Furthermore, the clear glass block market is significantly driven by advancements in manufacturing technology, which have led to the production of clearer and more durable variants that can withstand environmental pressures better than traditional materials. As urban dwellings increasingly prioritize light and airiness, the demand for clear glass blocks is likely to surge even further.

Frosted Glass Block:

Frosted glass blocks are renowned for their unique ability to diffuse light while maintaining privacy, making them a popular choice for bathrooms, spas, and other personal spaces. Their opaque surface minimizes visibility while allowing soft illumination, which enhances the ambiance within a room. Frosted glass blocks are also utilized in commercial settings where privacy is essential, such as in offices or clinics. With the growing emphasis on creating serene environments in both residential and commercial buildings, the demand for frosted glass blocks is expected to see a marked increase. These blocks also come in various patterns and thicknesses, allowing for customization in design to suit diverse architectural themes.

Colored Glass Block:

Colored glass blocks are gaining popularity due to their vibrant aesthetic appeal and versatility in design. They are often used to create visually striking features in both residential and commercial properties, enhancing overall architectural beauty. These blocks can be utilized in facades, windows, or interior partitions, providing colorful light effects that can transform spaces dramatically. The increasing trend towards personalized and unique decor is contributing to the rising demand for colored glass blocks. Additionally, manufacturers are continuously innovating to offer a wider range of colors and finishes, thus catering to the specific preferences of architects and designers, thereby boosting their market share.

Patterned Glass Block:

Patterned glass blocks offer a combination of light diffusion and visual interest, making them ideal for architectural applications where aesthetics are a priority. These blocks feature various textures and designs that not only enhance privacy but also add a decorative element to spaces. They are frequently used in both commercial and residential buildings for walls, partitions, and even external facades. The versatility of patterned glass blocks allows designers to incorporate them into various architectural styles, from modern to traditional. As the trend for unique and customized architectural solutions grows, patterned glass blocks are expected to see a rise in demand, particularly in creative design projects.

Self-Luminous Glass Block:

Self-luminous glass blocks represent a significant innovation in the market, combining functionality with advanced technology. They are designed to emit light, providing illumination without the need for electrical fixtures. This feature makes them particularly attractive for use in low-light environments or for accentuating architectural features in commercial and residential settings. As energy efficiency becomes increasingly important in building design, self-luminous glass blocks offer an eco-friendly alternative to conventional lighting solutions. Their aesthetic appeal and practical benefits are driving their market growth, as more architects and builders look to integrate cutting-edge technologies into their designs.

By Application

Residential Buildings:

The residential buildings segment is a significant consumer of pre fabricated glass blocks, driven by the increasing trend for modern and innovative home designs. Homeowners are increasingly opting for glass blocks to create luminous spaces that are not only functional but also visually appealing. Their insulating properties and ability to provide privacy while allowing natural light to flood rooms make them an ideal choice for bathrooms, living spaces, and even exterior walls. As the demand for unique home designs continues to rise, the residential sector is expected to see a steady increase in the use of prefabricated glass blocks, allowing for a blend of aesthetic and practical benefits.

Commercial Buildings:

In the commercial building sector, pre fabricated glass blocks are utilized extensively for their aesthetic qualities and functionality. They are often used in office buildings, retail stores, and hospitality venues to create open and airy atmospheres while ensuring privacy in specific areas. The use of glass blocks in commercial spaces allows for unique design elements and can significantly enhance the overall customer experience. As businesses seek to create inviting environments for clients and employees alike, the demand for glass blocks in commercial applications is anticipated to grow, further driving market expansion.

Industrial Buildings:

Industrial buildings are incorporating pre fabricated glass blocks to optimize light while maintaining security and safety. These blocks are utilized in factories, warehouses, and production facilities to provide natural light without compromising on safety features like security. The ability of glass blocks to withstand harsh environmental conditions makes them a suitable choice for industrial applications. As industries continue to adopt sustainable practices, the use of glass blocks for improved energy efficiency is expected to rise, reflecting a growing trend towards environmentally-friendly construction solutions.

Public Infrastructure:

Public infrastructure projects are increasingly utilizing pre fabricated glass blocks for their durability and aesthetic benefits. These blocks are ideal for use in schools, hospitals, and community centers where maximizing natural light is essential while ensuring privacy in sensitive areas. The adaptability of glass blocks enables their application in various architectural designs within public infrastructure, ensuring they meet both functional and aesthetic requirements. As governments and organizations aim to create healthier and more inviting public spaces, the adoption of glass blocks is likely to increase significantly in this segment.

Others:

This category encompasses various applications not directly covered by the primary segments, including artistic installations, decorative features, and niche market uses. The versatility of pre fabricated glass blocks allows them to be used in a wide range of creative applications, such as in art installations or as part of unique architectural designs. As designers and architects continue to explore innovative uses for glass blocks, this segment is anticipated to experience growth, fueled by creativity and the desire for personalization in various settings.

By Distribution Channel

Online Stores:

The online stores segment has seen significant growth in recent years, driven by the increasing trend of e-commerce in the building materials sector. Customers appreciate the convenience of browsing a wide variety of glass block products from the comfort of their homes, allowing for easy comparisons of features, prices, and customer reviews. Online platforms also provide access to a broader range of products that might not be available in local stores. As more consumers turn to online shopping for home improvement projects, the online distribution channel for pre fabricated glass blocks is expected to continue flourishing, attracting both retail and professional buyers.

Specialty Stores:

Specialty stores that focus on building materials and home improvement products play a pivotal role in the distribution of pre fabricated glass blocks. These stores often provide expert advice and personalized service, enabling customers to find suitable products for their specific needs. The knowledgeable staff can assist customers in making informed choices regarding the various options available, thus enhancing the shopping experience. As consumers increasingly seek tailored solutions for their building projects, specialty stores are likely to maintain a strong market presence, contributing to the overall growth of the pre fabricated glass block market.

Home Improvement Stores:

Home improvement stores are a significant distribution channel for pre fabricated glass blocks, providing a vast selection of products that cater to DIY enthusiasts and professional contractors alike. These stores often feature extensive displays that allow customers to visualize how glass blocks can enhance their projects. The convenience of purchasing glass blocks alongside other building materials makes home improvement stores a preferred option for many consumers. As the trend for home renovations continues to rise, these stores are well-positioned to meet the growing demand for glass blocks among both amateur and professional builders.

Building Material Suppliers:

Building material suppliers play a crucial role in the distribution of pre fabricated glass blocks by providing access to contractors and developers engaged in larger projects. These suppliers maintain strong relationships with manufacturers and often stock a wide range of glass block products to meet market demands. Their ability to supply materials in bulk and offer competitive pricing makes them a preferred choice for construction companies and large-scale projects. As the construction industry grows, the reliance on building material suppliers for prefabricated glass blocks is expected to increase, further driving the market.

Others:

The "Others" segment includes various alternative distribution channels such as direct sales from manufacturers, trade shows, and exhibitions. These channels are significant for reaching specific customer segments and promoting new products. Direct sales allow manufacturers to establish a direct relationship with customers, providing them with customized solutions and better pricing. Trade shows and exhibitions serve as platforms for manufacturers to showcase their products and innovations, attracting potential buyers and industry professionals. As companies continue to explore diverse distribution strategies to reach their target markets, the "Others" segment is likely to remain relevant in the pre fabricated glass block market.

By Ingredient Type

Soda Lime Glass:

Soda lime glass is the most commonly used ingredient type for producing pre fabricated glass blocks. Its composition, which includes sodium carbonate, calcium oxide, and silica, provides a balance of durability and transparency, making it suitable for a wide range of applications. Soda lime glass blocks are renowned for their affordability and versatility, allowing for various design possibilities in both residential and commercial projects. As this material is widely available and easy to work with, it is expected to dominate the market, particularly among budget-conscious builders and homeowners.

Acrylic Glass:

Acrylic glass, also known as poly(methyl methacrylate) or PMMA, is increasingly being adopted in the production of glass blocks due to its lightweight and shatter-resistant properties. Unlike traditional glass, acrylic glass offers greater flexibility in design, allowing for more intricate shapes and sizes. This ingredient type is particularly favored in applications where safety is a concern, such as in high-traffic areas or installations in homes with children. As awareness of the benefits of acrylic glass continues to grow, its market share within the prefabricated glass block segment is expected to expand.

Borosilicate Glass:

Borosilicate glass is renowned for its high resistance to thermal shock and chemical corrosion, making it an ideal ingredient for specialized applications. While its use in pre fabricated glass blocks is less common than soda lime glass, it is becoming increasingly popular in high-performance settings, such as laboratories and industrial facilities. The unique properties of borosilicate glass make it suitable for environments that require durability and safety. As more industries recognize the advantages of using borosilicate glass blocks for specific applications, this segment is likely to witness growth.

Crystal Glass:

Crystal glass, known for its clarity and brilliance, is used in the production of high-end glass blocks that serve decorative purposes. These blocks are often employed in luxury residential projects and upscale commercial establishments where aesthetic appeal is paramount. The ability of crystal glass to refract light beautifully allows designers to create stunning visual effects. However, due to its higher cost compared to other materials, the demand for crystal glass blocks is more niche, targeting specific market segments focused on luxury and design excellence. As the trend for personalized luxury continues to rise, crystal glass blocks may see a modest increase in demand.

Tinted Glass:

Tinted glass blocks offer functional and aesthetic benefits by reducing glare and enhancing privacy while still allowing natural light to enter spaces. They are ideal for applications where controlling sunlight is essential, such as in residential settings facing direct sunlight or in commercial spaces requiring discretion. The ability to provide a range of tint options allows architects and designers to create tailored solutions that match their vision. As awareness of energy efficiency and thermal comfort grows, the use of tinted glass blocks in various applications is expected to rise, contributing positively to this segment of the market.

By Region

The North American region holds a significant share of the pre fabricated glass block market, accounting for approximately 35% of the total market revenue in 2023. The robust construction industry along with a focus on sustainable building practices in the U.S. and Canada is driving this growth. The rising trend of remodeling and renovations in residential and commercial properties is expected to further enhance the demand for glass blocks in this region. Moreover, the increasing emphasis on energy efficiency in building designs is likely to drive innovation and boost the use of prefabricated glass blocks in North America. The region is projected to maintain a steady CAGR of around 5% through the forecast period, reflecting continued investment in modern construction solutions.

Europe follows closely behind, contributing approximately 30% of the global pre fabricated glass block market in 2023. Countries like Germany, France, and the UK are leading the way due to their established construction sectors and a growing preference for eco-friendly building materials. The European market is characterized by a significant emphasis on architectural innovation and aesthetic design, which aligns well with the properties of glass blocks. The region is expected to experience a CAGR of around 6% between 2025 and 2035, driven by infrastructural developments and the increasing adoption of glass blocks in public and private buildings.

Opportunities

One of the most promising opportunities in the pre fabricated glass block market is the increasing trend of urbanization, particularly in developing regions. As cities continue to grow and expand, there is a rising demand for innovative construction materials that can cater to both aesthetic and functional requirements in densely populated areas. Glass blocks offer unique advantages, including natural light penetration, insulation properties, and design flexibility, making them an attractive option for architects and builders looking to maximize space and improve building performance. Additionally, government initiatives and policies aimed at promoting sustainable construction practices are likely to further enhance opportunities for glass block manufacturers as they align their offerings with eco-friendly solutions.

Another significant opportunity lies in technological advancements that are influencing the production and application of pre fabricated glass blocks. The ongoing research into new manufacturing processes and materials is paving the way for the introduction of high-performance glass blocks that offer enhanced durability, energy efficiency, and aesthetic appeal. These advancements not only enable manufacturers to meet evolving consumer demands but also create room for innovation in design, allowing for the development of more customized and functional products. As the market evolves, manufacturers who leverage these technological innovations will likely gain a competitive edge, thus further driving market growth.

Threats

One of the primary threats facing the pre fabricated glass block market is the volatility of raw material prices. Fluctuations in the cost of materials such as silica sand and soda ash, which are essential for glass production, can adversely affect the profitability of manufacturers. Such price volatility may also lead to increased costs for consumers, potentially prompting them to seek alternative building materials that are more stable in pricing. Additionally, economic downturns and reduced spending in construction projects can pose significant challenges, as fewer building projects mean decreased demand for prefabricated glass products. Manufacturers must therefore remain agile and responsive to market changes to mitigate these risks effectively.

Another potential restraining factor for the pre fabricated glass block market is the competition from alternative building materials. With advancements in construction technology, numerous alternatives such as concrete blocks, modular panels, and synthetic materials are gaining popularity. These alternatives may offer similar benefits at potentially lower costs, which could deter some consumers from opting for glass blocks. Moreover, the increasing focus on cost-effective solutions in construction projects may push builders and contractors to choose less expensive materials, limiting the growth of the glass block market. Therefore, positioning glass blocks as a preferred choice requires effective marketing strategies that highlight their unique advantages over competing materials.

Competitor Outlook

• Basalite Concrete Products LLC
• Glass Block Company
• Wienerberger AG
• Masonite International Corporation
• Seves Glass Block
• Owens Corning
• Pittsburgh Corning
• Thermafiber, Inc.
• Vitrablok, Inc.
• Brickworks Limited
• Saint-Gobain Glass
• Firestone Building Products
• Cemex S.A.B. de C.V.
• AGC Inc.
• Rochester Midland Corporation

The competitive landscape of the pre fabricated glass block market is characterized by a mix of established players and emerging companies, each vying for market share through innovation, diversification, and strategic partnerships. Major manufacturers are focusing on research and development to create advanced glass products that not only meet consumer preferences but also adhere to stringent environmental regulations. The emphasis on sustainability is transforming the competitive dynamics, prompting companies to invest in eco-friendly production processes and incorporate recycled materials into their offerings. Additionally, the rise of e-commerce platforms has intensified competition as both established brands and new entrants seek to expand their market reach through online sales channels.

Key players such as Seves Glass Block and Pittsburgh Corning have maintained a strong market presence through continuous product innovation and strategic collaborations with architects and construction firms. These companies are renowned for their diverse range of glass block products, catering to various applications from residential to commercial projects. Their focus on customer-centric solutions and high-quality manufacturing processes has enabled them to build a reputation for reliability and performance. Furthermore, these brands frequently participate in industry trade shows and exhibitions, promoting their offerings and forging relationships with potential clients and partners, thereby strengthening their competitive position in the market.

Emerging companies are also playing a crucial role in shaping the competitive landscape by introducing niche products and targeting specific market segments. For instance, companies specializing in decorative glass blocks are tapping into the growing demand for personalized designs, providing customers with unique options that resonate with contemporary architectural trends. These smaller firms often prioritize customization and flexibility, allowing them to differentiate themselves from larger manufacturers. As consumer preferences continue to evolve, the ability to adapt and respond quickly to market trends will be vital for both established and emerging players to maintain competitiveness in the pre fabricated glass block market.

• 1 Appendix

  • 1.1 List of Tables
  • 1.2 List of Figures

• 2 Introduction

  • 2.1 Market Definition
  • 2.2 Scope of the Report
  • 2.3 Study Assumptions
  • 2.4 Base Currency & Forecast Periods

• 3 Market Dynamics

  • 3.1 Market Growth Factors
  • 3.2 Economic & Global Events
  • 3.3 Innovation Trends
  • 3.4 Supply Chain Analysis

• 4 Consumer Behavior

  • 4.1 Market Trends
  • 4.2 Pricing Analysis
  • 4.3 Buyer Insights

• 5 Key Player Profiles

  • 5.1 AGC Inc.
    • 5.1.1 Business Overview
    • 5.1.2 Products & Services
    • 5.1.3 Financials
    • 5.1.4 Recent Developments
    • 5.1.5 SWOT Analysis
  • 5.2 Owens Corning
    • 5.2.1 Business Overview
    • 5.2.2 Products & Services
    • 5.2.3 Financials
    • 5.2.4 Recent Developments
    • 5.2.5 SWOT Analysis
  • 5.3 Vitrablok, Inc.
    • 5.3.1 Business Overview
    • 5.3.2 Products & Services
    • 5.3.3 Financials
    • 5.3.4 Recent Developments
    • 5.3.5 SWOT Analysis
  • 5.4 Wienerberger AG
    • 5.4.1 Business Overview
    • 5.4.2 Products & Services
    • 5.4.3 Financials
    • 5.4.4 Recent Developments
    • 5.4.5 SWOT Analysis
  • 5.5 Seves Glass Block
    • 5.5.1 Business Overview
    • 5.5.2 Products & Services
    • 5.5.3 Financials
    • 5.5.4 Recent Developments
    • 5.5.5 SWOT Analysis
  • 5.6 Thermafiber, Inc.
    • 5.6.1 Business Overview
    • 5.6.2 Products & Services
    • 5.6.3 Financials
    • 5.6.4 Recent Developments
    • 5.6.5 SWOT Analysis
  • 5.7 Brickworks Limited
    • 5.7.1 Business Overview
    • 5.7.2 Products & Services
    • 5.7.3 Financials
    • 5.7.4 Recent Developments
    • 5.7.5 SWOT Analysis
  • 5.8 Pittsburgh Corning
    • 5.8.1 Business Overview
    • 5.8.2 Products & Services
    • 5.8.3 Financials
    • 5.8.4 Recent Developments
    • 5.8.5 SWOT Analysis
  • 5.9 Saint-Gobain Glass
    • 5.9.1 Business Overview
    • 5.9.2 Products & Services
    • 5.9.3 Financials
    • 5.9.4 Recent Developments
    • 5.9.5 SWOT Analysis
  • 5.10 Glass Block Company
    • 5.10.1 Business Overview
    • 5.10.2 Products & Services
    • 5.10.3 Financials
    • 5.10.4 Recent Developments
    • 5.10.5 SWOT Analysis
  • 5.11 Cemex S.A.B. de C.V.
    • 5.11.1 Business Overview
    • 5.11.2 Products & Services
    • 5.11.3 Financials
    • 5.11.4 Recent Developments
    • 5.11.5 SWOT Analysis
  • 5.12 Firestone Building Products
    • 5.12.1 Business Overview
    • 5.12.2 Products & Services
    • 5.12.3 Financials
    • 5.12.4 Recent Developments
    • 5.12.5 SWOT Analysis
  • 5.13 Rochester Midland Corporation
    • 5.13.1 Business Overview
    • 5.13.2 Products & Services
    • 5.13.3 Financials
    • 5.13.4 Recent Developments
    • 5.13.5 SWOT Analysis
  • 5.14 Basalite Concrete Products LLC
    • 5.14.1 Business Overview
    • 5.14.2 Products & Services
    • 5.14.3 Financials
    • 5.14.4 Recent Developments
    • 5.14.5 SWOT Analysis
  • 5.15 Masonite International Corporation
    • 5.15.1 Business Overview
    • 5.15.2 Products & Services
    • 5.15.3 Financials
    • 5.15.4 Recent Developments
    • 5.15.5 SWOT Analysis

• 6 Market Segmentation

  • 6.1 Pre Fabricated Glass Block Market, By Application
    • 6.1.1 Residential Buildings
    • 6.1.2 Commercial Buildings
    • 6.1.3 Industrial Buildings
    • 6.1.4 Public Infrastructure
    • 6.1.5 Others
  • 6.2 Pre Fabricated Glass Block Market, By Product Type
    • 6.2.1 Clear Glass Block
    • 6.2.2 Frosted Glass Block
    • 6.2.3 Colored Glass Block
    • 6.2.4 Patterned Glass Block
    • 6.2.5 Self-Luminous Glass Block
  • 6.3 Pre Fabricated Glass Block Market, By Ingredient Type
    • 6.3.1 Soda Lime Glass
    • 6.3.2 Acrylic Glass
    • 6.3.3 Borosilicate Glass
    • 6.3.4 Crystal Glass
    • 6.3.5 Tinted Glass
  • 6.4 Pre Fabricated Glass Block Market, By Distribution Channel
    • 6.4.1 Online Stores
    • 6.4.2 Specialty Stores
    • 6.4.3 Home Improvement Stores
    • 6.4.4 Building Material Suppliers
    • 6.4.5 Others

• 7 Competitive Analysis

  • 7.1 Key Player Comparison
  • 7.2 Market Share Analysis
  • 7.3 Investment Trends
  • 7.4 SWOT Analysis

• 8 Research Methodology

  • 8.1 Analysis Design
  • 8.2 Research Phases
  • 8.3 Study Timeline

• 9 Future Market Outlook

  • 9.1 Growth Forecast
  • 9.2 Market Evolution

• 10 Geographical Overview

  • 10.1 Europe - Market Analysis
    • 10.1.1 By Country
      • 10.1.1.1 UK
      • 10.1.1.2 France
      • 10.1.1.3 Germany
      • 10.1.1.4 Spain
      • 10.1.1.5 Italy
  • 10.2 Asia Pacific - Market Analysis
    • 10.2.1 By Country
      • 10.2.1.1 India
      • 10.2.1.2 China
      • 10.2.1.3 Japan
      • 10.2.1.4 South Korea
  • 10.3 Latin America - Market Analysis
    • 10.3.1 By Country
      • 10.3.1.1 Brazil
      • 10.3.1.2 Argentina
      • 10.3.1.3 Mexico
  • 10.4 North America - Market Analysis
    • 10.4.1 By Country
      • 10.4.1.1 USA
      • 10.4.1.2 Canada
  • 10.5 Middle East & Africa - Market Analysis
    • 10.5.1 By Country
      • 10.5.1.1 Middle East
      • 10.5.1.2 Africa
  • 10.6 Pre Fabricated Glass Block Market by Region

• 11 Global Economic Factors

  • 11.1 Inflation Impact
  • 11.2 Trade Policies

• 12 Technology & Innovation

  • 12.1 Emerging Technologies
  • 12.2 AI & Digital Trends
  • 12.3 Patent Research

• 13 Investment & Market Growth

  • 13.1 Funding Trends
  • 13.2 Future Market Projections

• 14 Market Overview & Key Insights

  • 14.1 Executive Summary
  • 14.2 Key Trends
  • 14.3 Market Challenges
  • 14.4 Regulatory Landscape

Segments Analyzed in the Report

The global Pre Fabricated Glass Block market is categorized based on

By Product Type

• Clear Glass Block
• Frosted Glass Block
• Colored Glass Block
• Patterned Glass Block
• Self-Luminous Glass Block

By Application

• Residential Buildings
• Commercial Buildings
• Industrial Buildings
• Public Infrastructure
• Others

By Distribution Channel

• Online Stores
• Specialty Stores
• Home Improvement Stores
• Building Material Suppliers
• Others

By Ingredient Type

• Soda Lime Glass
• Acrylic Glass
• Borosilicate Glass
• Crystal Glass
• Tinted Glass

By Region

• North America
• Europe
• Asia Pacific
• Latin America
• Middle East & Africa

Key Players

• Basalite Concrete Products LLC
• Glass Block Company
• Wienerberger AG
• Masonite International Corporation
• Seves Glass Block
• Owens Corning
• Pittsburgh Corning
• Thermafiber, Inc.
• Vitrablok, Inc.
• Brickworks Limited
• Saint-Gobain Glass
• Firestone Building Products
• Cemex S.A.B. de C.V.
• AGC Inc.
• Rochester Midland Corporation