What is hurricane resistant glass

Hurricane-resistant glass, often referred to as storm-proof or impact-resistant glass, is a type of glass specifically designed to withstand the extreme conditions of a hurricane. This includes high winds, heavy rain, and flying debris, which are typical during such storms. Here's an in-depth look at what hurricane-resistant glass is:

Composition and Manufacture

Hurricane-resistant glass is typically made by bonding two pieces of glass with a clear, strong interlayer of polyvinyl butyral (PVB) or ethylene-vinyl acetate (EVA). This interlayer holds the glass together even when it is shattered, preventing the glass from breaking apart into large, sharp pieces. Some hurricane-resistant glass may also include layers of polycarbonate material to further enhance its impact resistance.

Key Characteristics

Impact Resistance: The primary feature of hurricane-resistant glass is its ability to resist impacts from flying debris, which can be propelled by winds of over 100 miles per hour during a hurricane.

Pressure and Wind Resistance: Besides impact resistance, this type of glass can also withstand the significant pressure differences caused by high winds, which can otherwise cause windows to blow out.

Shatter Resistance: While the glass can crack upon strong impact, the fragments adhere to the interlayer, maintaining the integrity of the window and keeping the elements outside.

Testing and Standards

Hurricane-resistant glass undergoes rigorous testing to meet specific safety standards. In the United States, standards set by organizations such as the American Society for Testing and Materials (ASTM) and the Miami-Dade County product control division are among the most stringent. These tests include large and small missile impact tests, as well as cyclic pressure tests to simulate the fluctuating pressures of a hurricane.

Benefits

• Safety: By preventing windows from shattering into dangerous shards, hurricane-resistant glass reduces the risk of injury from flying glass.
• Security: The durability and impact resistance can also provide a level of protection against forced entry.
• Noise Reduction: The interlayer in hurricane-resistant glass provides excellent sound dampening, which reduces noise pollution.
• UV Protection: Many hurricane-resistant windows filter out UV rays, protecting the interior of homes from sun damage.

Applications

Hurricane-resistant glass is used in both residential and commercial buildings, particularly in coastal areas prone to hurricanes and other tropical storms. It is also used in other areas where heightened window security is desired.

Maintenance and Care

Though tough, hurricane-resistant glass should be maintained just like any other glass. Regular cleaning and inspection for any damage that could compromise its integrity are recommended.

Hurricane-resistant glass is a protective measure for buildings in storm-prone regions, designed to offer resistance against the forces of nature, thereby ensuring the safety and security of the inhabitants and the structure itself.