Can You Install Bulletproof Windows on Your House?

Many homeowners and professionals consider installing bulletproof windows as a means of enhancing the security and safety of their properties. While the term 'bulletproof' can be somewhat misleading, modern-day ballistic glass is one of the most effective materials to mitigate the risk of penetration from projectiles. This article will explore what bulletproof windows are, their construction, and whether they can be installed on residential properties.

Understanding Bulletproof Glass

Bulletproof glass, also known as ballistic glass, transparent armor, or bullet-resistant glass, is designed to resist penetration by projectiles. Unlike the operating system 'Windows,' which refers to software and not actual glass, bulletproof glass is a combination of glass and polycarbonate materials bonded together to form a strong and transparent barrier.

Construction and Materials

Bulletproof glass is typically made from a combination of two or more types of glass, one hard and one soft. The softer layer increases the glass's elasticity, allowing it to flex rather than shatter, while maintaining a high level of transparency. The polycarbonate materials used can include Makroclear, Cryolon, or Tuffak, which are bonded with polyurethane or polyvinyl butyral using a vacuum-sealed process. Once the materials are bonded, they are pressurized and heated to solidify the bonds.

Thickness and Weight

The thickness and weight of bulletproof glass are factors to consider when deciding whether to install it. For instance, bulletproof glass rated to stop a 7.62x54R armor-piercing round can be up to 95 millimeters thick and weigh approximately 203 kg per square meter or 41.5 pounds per square foot. These figures highlight the significant size and weight of such glass, which may be a hurdle for many residential properties.

Real-World Installation Examples

Despite the challenges, bulletproof windows can indeed be installed on residential properties. A personal example illustrates this: in the 1970s, the author's father worked at a bank undergoing remodeling. When the drive-up window was removed, he managed to obtain the window for free by arranging its removal. Installing it on a shed and additional structures showed that, if such heavy-duty material can be placed on non-residential structures, it is also possible to install it on houses.

Conclusion

While bulletproof windows can provide exceptional security, they come with a significant downside in terms of weight and aesthetics. However, for those requiring the highest level of protection, they are undoubtedly a viable solution. Installing bulletproof glass requires professional expertise and may involve substantial costs. Nonetheless, for scenarios where the protection is paramount, the benefits of bulletproof windows far outweigh the drawbacks.