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Is Laminated Glass Breakable?



One of the ​most critical ​elements of a ​vehicle’s safety ​is its glass, ​and laminated ​glass has emerged ​as a ​popular choice in ​the construction ​of automobile windows ​and windshields. ​But is laminated ​glass breakable, ​and how does ​it perform ​under different stressors and impacts? In this blog by Auto Glass America, we will delve into the world of laminated auto glass to understand its durability and the innovative features that make it a top choice for vehicle safety.


Understanding Laminated Glass

Laminated glass is ​a type ​of safety glass ​used in ​various applications, including ​automobiles, buildings, ​and aircraft. It ​is composed ​of multiple layers ​of glass ​and an interlayer ​made of ​polyvinyl butyral (PVB) ​or ethylene-vinyl ​acetate (EVA). This ​interlayer acts ​as a bonding ​agent, holding ​the layers of ​glass together ​and preventing them ​from shattering ​upon impact.


1. Impact Resistance

One of the primary reasons laminated glass is chosen for auto windshields is its remarkable impact resistance. Unlike conventional tempered glass, which shatters into small, sharp fragments upon impact, laminated glass remains intact. When struck with force, the outer layers may break or crack, but the interlayer keeps the glass bonded and prevents it from falling apart. This feature significantly reduces the risk of injuries to occupants during accidents.


2. Durability against Environmental Factors

Auto glass is ​exposed to ​a variety of ​environmental factors, ​including extreme temperatures, ​ultraviolet (UV) ​radiation, and moisture. ​Laminated glass ​is designed to ​withstand these ​conditions, offering durability ​and longevity. ​The interlayer provides ​UV protection, ​preventing the glass ​from yellowing ​or becoming brittle ​over time. ​Additionally, it helps ​to maintain ​the structural integrity ​of the ​glass under varying weather conditions.


3. Enhanced Security

In addition to its safety benefits, laminated glass also offers enhanced security. It is difficult to break through laminated glass quickly, making it a valuable deterrent against theft and vandalism. The interlayer holds the shattered pieces together, making it challenging for criminals to gain entry into the vehicle. This added security feature is particularly crucial for protecting valuable possessions left inside the car.


Is Laminated Glass Breakable?

While laminated glass is exceptionally durable and resistant to various stresses, it is not entirely indestructible. Like any material, it has limitations, and its breakability depends on several factors, including the type of impact, the thickness of the glass, and the quality of the interlayer.


1. Impact Severity

The breakability of laminated glass varies with the severity of the impact. It can withstand minor impacts, such as pebbles or small debris, without breaking. However, in the case of a severe collision or a heavy object striking the windshield, the outer layers of the glass may shatter.


2. Thickness of the Glass

The thickness of the laminated glass also influences its breakability. Thicker laminated glass provides greater resistance to breakage. In many modern vehicles, the windshield is composed of two layers of glass with a PVB interlayer, which makes it more robust compared to single-layer tempered glass. The additional thickness contributes to the overall strength and durability of the glass.


Maintenance and Care for Laminated Auto Glass

To ensure the continued durability and safety of laminated auto glass, regular maintenance and proper care are essential. Here are some tips for maintaining your laminated auto glass:


1. Regular Cleaning:

Clean the glass regularly using a mild, non-abrasive cleaner and a soft cloth. Avoid using harsh chemicals or abrasive materials that can scratch the glass or damage the interlayer.


2. Repair Chips and Cracks:

If you notice small chips or cracks in the glass, it’s important to address them promptly. Laminated glass can often be repaired, preserving its structural integrity and preventing the damage from spreading.


3. Avoid Extreme Temperature Changes:

Avoid subjecting your vehicle’s laminated glass to rapid temperature changes, as this can stress the glass and potentially lead to cracks.


4. Choose Professional Installation:

When replacing auto glass, opt for professional installation services. Proper installation is crucial to ensuring the glass’s integrity and safety features.



While laminated glass may break under extreme conditions, it does so in a manner that minimizes risks to passengers and provides a high level of safety. It continues to be a preferred choice in the automotive industry, playing a vital role in protecting lives on the road.

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