Frequently Asked Questions
Find answers to common questions about the functionality, installation, and maintenance of ballistic glass and window security film. Our FAQs are designed to provide you with the information you need to make informed decisions about enhancing the safety and security of your environment.
Window Security Film
What is window security film?
Window security film, also called security window film and safety film, is a thin protective film layer applied to existing glass surfaces. Security film is typically composed of layers of high-strength polyester, and is installed on the interior side of existing windows. Security film enhances the strength and resilience of glass, holding shattered pieces together in the event of impact or breakage.
What's the difference between window security film and regular window film?
Window security film is thicker than regular window films. Unlike window tints and other window films, security film is engineered for durability and is designed to hold broken glass in place. Security film is also installed with anchoring to keep the film attached to the window frame.
Does window security film provide privacy?
Window security film’s primary purpose is to slow down intruders. It is usually transparent, but it can be tinted or mirrored to provide privacy as well as protection. Tinted window security film does not block 100% of light and will not provide the same amount of privacy as a black out film.
How thick is window security film?
Armitek window security film is available in several thicknesses, ranging from 8 mil up to 21 mil. Increased thickness means an increased level of protection.
Does window security film prevent break-ins?
Window security film is specially engineered to be tear-resistant. When properly anchored, security film can prevent intruders from gaining access for several minutes, although the length of time varies based on the thickness of the film and the strength of the intruder.
A determined intruder will eventually gain entry, but the security film will slow him or her down and make it more difficult. Most intruders will give up and look for an easier target before ever gaining entry.
Will window security film stop bullets?
While window security film might be better on your budget than bulletproof glass, it is not rated as a ballistic material. While security film can prevent intruders from gaining entry, it will not stop bullets.
Can anyone install window security film?
Window security film is relatively easy to install, but it can be difficult to prevent air bubbles and other debris from becoming trapped between the film and the glass. Professional installers will provide a cleaner and quicker installation than someone with little experience, however small bubbles may appear even with professional installation.
One aspect of installation that may be difficult for non-professionals is anchoring the film to the window frame. Improper anchoring can cause the film to fail and will void the manufacturer’s warranty.
How do I clean window security film?
Window security film should not be cleaned with standard commercial glass cleaners, especially those containing ammonia. Use a lint-free, non-abrasive cloth, such as microfiber, to avoid scratching the film.
Ballistic Glass
What is bulletproof glass?
Ballistic glass, bulletproof glass, or bullet-resistant glass, is a thick transparent material composed of alternating layers of glass and a softer transparent material. To qualify as a ballistic material, bulletproof glass must meet or exceed established ballistic standards, such as the UL 752 standard.
What's the difference between bulletproof glass and ballistic glass?
Bulletproof glass and ballistic glass are interchangeable terms which refer to the same products – transparent material which has been rated to resist bullet penetration. Bullet-resistant is a more accurate term than bulletproof.
Is it legal to buy bulletproof glass?
Buying and installing bulletproof glass systems is entirely legal in the United States. In some areas, installation of ballistic glass may require a building permit, especially if upgraded window frames are needed. You should check with your local government before making any structural changes to existing buildings.
Is bulletproof glass expensive?
Ballistic glass varies in cost depending on the level of protection and the installation environment. Costs can range from $50 to $100 per square foot, not including installation and framing costs.
Will I need new window frames to install bulletproof glass?
Armitek’s ballistic glass is engineered to be lighter and thinner than current bulletproof glass on the market. For the most common threat levels, our glass can be installed in most windows with an opening of 1/4 inch to 1-1/4 inch without the need to replace existing frames.
For higher threat levels, frames will need to be replaced or backglazing can be used to add additional protection.
What is backglazing?
Backglazing involves adding a second layer of glass against the interior side of an existing window. This can be useful in historic buildings or when the cost of replacing window frames is prohibitive.
Can anyone install bulletproof glass?
While anyone can purchase bulletproof glass, it is highly recommended that bulletproof glass be installed by a professional glazier. Glaziers specialize in installing different glass products, have much more experience with glass than the average handyman, and are likely to be more familiar with which permits, if any, are required.
What are the ballistic standards for bulletproof glass?
The most common standard in North America for ballistic protection is the UL 752 standard, established by UL Solutions. The UL 752 standards ensure that materials are capable of providing adequate protection against specific ballistic threats.
How does bulletproof glass work?
Bulletproof glass resists penetration by slowing a bullet and absorbing its energy. This is accomplished through its unique construction of alternating hard and soft materials.
What material is bulletproof glass made of?
Ballistic glass typically consists of alternating layers of annealed glass and another transparent material, such as acrylic or polycarbonate. Ballistic glass may also include layers of window security film. This design allows for the absorption and dispersion of impact energy, preventing bullet penetration.
How do I clean bulletproof glass?
Bulletproof glass should not be cleaned with standard commercial glass cleaners, especially those containing ammonia. Use a lint-free, non-abrasive cloth, such as microfiber, to avoid scratching the surface of the glass.
Can bulletproof glass be broken?
Although very strong, ballistic glass can be broken. Multiple impacts at the exact same point can cause ballistic glass to fail, although such a scenario is unlikely. Improper maintenance can also contribute to weakening and eventual failure of ballistic glass.
If ballistic glass has been shot or damaged, it should be replaced immediately.
How often does bulletproof glass need to be replaced?
Ballistic glass has a long lifespan, often exceeding 20 years, depending on usage, maintenance, and the specific type of glass used.
After several years, ballistic glass may start to yellow from UV exposure. Also, improperly maintained ballistic glass can start to craze, which is permanent and can affect visibility.
While neither of these will impact the performance of ballistic glass, some owners opt to replace it with newer materials when it starts to yellow or develop crazing.
If ballistic glass has been shot, it should be replaced immediately.
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