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Jun, Fri, 2025
What Is Laminated Glass and Why Is It Used in Modern Construction?
Laminated glass is a type of safety glass made by bonding two or more layers of glass with a strong, transparent plastic interlayer (most commonly PVB) under heat and pressure. This “glass sandwich” helps the panel stay in place even when cracked, reducing the risk of sharp shards and improving post-breakage safety.
Beyond safety, laminated glass can enhance security, reduce noise transmission, and help filter UV radiation, benefits that make it especially valuable in high-traffic or high-exposure environments.
Today, it’s widely used in applications like storefronts, curtain walls, skylights, architectural windows, and hurricane- or impact-resistant glazing for both residential and commercial projects.
In this article, we’ll break down what laminated glass is, how it’s made, where it’s used, and how to choose the right type for your project.
What Is Laminated Glass and How Is It Made
Laminated glass is a type of safety glass manufactured by bonding two or more sheets of glass with a resilient plastic interlayer, most commonly polyvinyl butyral (PVB), though alternatives such as EVA or ionoplast interlayers may also be used for specific performance requirements.
The primary function of this interlayer is to hold the glass together if it breaks. Instead of shattering into sharp, dangerous fragments, the glass adheres to the interlayer, maintaining its position within the frame. This behavior improves safety, structural integrity, and, depending on the configuration, acoustic and UV performance.
For this reason, laminated glass has become one of the new trends in construction in this new era, where comfort and safety are sought in a single element.
How Laminated Glass Is Made
The manufacturing process of laminated glass is carefully controlled to ensure strength, clarity, and long-term durability:
- Glass Preparation: Two or more panes of annealed or heat-treated glass are selected based on the required thickness and application.
- Interlayer Assembly: A plastic interlayer (typically PVB or EVA) is placed between the glass sheets. Specialized interlayers may include acoustic, UV-filtering, or structural properties.
- Pre-Lamination: The glass “sandwich” is passed through heated rollers or vacuum systems to remove air pockets and begin bonding.
- Autoclave Bonding: The assembly is then processed in an autoclave under heat and pressure, creating a permanent, optically clear bond between layers.
- Cooling and Inspection: Once bonded, the laminated glass is cooled and inspected for clarity, adhesion, and performance before cutting or shaping to specification.
This controlled process allows laminated glass to meet strict architectural, safety, and building code requirements across a wide range of applications.
Common Applications of Laminated Glass in Modern Construction
Thanks to its layered construction and post-breakage performance, laminated glass is widely used across commercial, residential, and specialized architectural applications. Its ability to enhance safety, security, and comfort, without compromising transparency or design, makes it a preferred choice for modern building projects.
Some of the most common applications include:
✅ Storefronts and Curtain Wall Systems: Laminated glass provides increased impact resistance and security for high-traffic commercial spaces while maintaining clear visibility and a clean architectural appearance.
✅ Windows and Doors: Commonly used in residential and commercial buildings located in areas exposed to storms, seismic activity, or higher security risks.
✅ Skylights and Overhead Glazing: Especially important in overhead applications, where laminated glass helps prevent falling shards if breakage occurs.
✅ Interior Partitions and Glass Walls: Ideal for offices, hospitality, and mixed-use spaces, combining visual openness with improved acoustic performance.
✅ Glass Railings and Balustrades: Offers fall protection and structural reliability while preserving unobstructed views.
✅ Sound-Sensitive Environments: Frequently specified for conference rooms, hotels, studios, and urban buildings where noise control is essential.
✅ Security and High-Risk Facilities: Used in banks, government buildings, embassies, and secure facilities, where laminated glass may be combined with specialized interlayers for enhanced protection.
✅ Specialty Applications: Including aquariums, museums, display cases, glass floors, and animal enclosures, projects that require both strength and optical clarity.
This versatility allows laminated glass to adapt to a wide range of architectural and functional requirements, from everyday commercial buildings to highly specialized environments.
What Are the Most Common Types of Laminated Glass?
Not all laminated glass is the same. Depending on the interlayer type, glass configuration, and performance requirements, laminated glass can be engineered to meet specific safety, acoustic, structural, or design needs.
Some of the most common types of laminated glass used in modern construction include:
- Impact-Resistant Laminated Glass: Designed to withstand strong impacts and meet hurricane or seismic building code requirements. Commonly used in coastal regions and high-exposure environments.
- Privacy Laminated Glass: Combines safety with translucent, frosted, or patterned interlayers to allow light transmission while limiting visibility.
- Bullet-Resistant Laminated Glass: Produced using multiple glass layers and high-performance interlayers to provide ballistic protection in high-security facilities such as banks, government buildings, and secure commercial spaces
- Sound Control Laminated Glass: Manufactured with specialized acoustic interlayers that help dampen sound vibrations, reducing noise transmission in airports, hotels, offices, and dense urban areas.
- Decorative Laminated Glass: Incorporates colored, patterned, or digitally printed interlayers, offering architects greater freedom to integrate branding, graphics, or artistic elements into glass surfaces.
- Rainbow Color Laminated Glass: A vibrant option that adds bold color and personality to architectural spaces.
- SentryGlas® Structural Laminated Glass (Clear Only): PRL offers SentryGlas® interlayers. Uses advanced interlayers (such as high-strength ionoplast materials) to provide increased load-bearing capacity, edge stability, and resistance to moisture, making it suitable for exposed-edge or structural applications.
By selecting the appropriate laminated glass type, architects and developers can balance safety, performance, and aesthetics while meeting project-specific codes and design goals.
Laminated Glass vs. Tempered Glass: What’s the Difference?
Laminated glass and tempered glass are both classified as safety glass, but they perform differently and are suited to distinct applications.
- Laminated glass is designed to remain in place when broken. The plastic interlayer holds the glass fragments together, providing enhanced post-breakage safety, improved security, and additional benefits such as sound insulation and UV protection. For this reason, laminated glass is often preferred for storefronts, curtain walls, skylights, railings, and applications where impact resistance or intrusion prevention is critical.
- Tempered glass, on the other hand, is heat-treated to increase its strength. When it breaks, it shatters into small, rounded pieces that reduce the risk of injury. Tempered glass is commonly used for interior applications such as shower doors, partitions, and areas where breakage is less likely to result in falling glass or security concerns.
In many architectural projects, laminated and tempered glass are not competing options but complementary solutions, each selected based on safety requirements, location, and building code considerations.
👉 For a more detailed comparison between laminated and tempered glass, explore our full guide on laminated vs. tempered glass applications.
At PRL Glass & Aluminum, we work with architects, developers, and contractors to provide a comprehensive range of laminated glass solutions, including impact-resistant, decorative, and sound control glass. All products are manufactured in-house to meet project-specific specifications, building codes, and performance requirements.
Whether you’re designing a commercial façade, upgrading interior glazing, or specifying glass for a complex architectural application, our team can help you identify the most suitable laminated glass configuration for your project.







