Ballistic Glass Protection


Security window film is not bulletproof

Commonly referred to as “bullet resistant” or “ballistic window film”, these retrofit products do not have bullet stopping power when installed on regular glass. RiotLite from DefenseLite is an effective solution for protecting buildings from active shooter attacks by helping delay an attacker’s access through glass and glazing. RiotLite is a clear security film laminate that is installed on the interior of existing glass and designed to hold glass together upon physical attack. Like all window films, RiotLite is not ‘bulletproof’ and does not stop bullets unless installed on ballistically rated glass. Installed correctly, this heavy gauge security window film solution is anchored to the existing glazing frame with a strong structural adhesive. This anchor holds broken glass within the window or door opening creating the needed delay when under forced entry or ballistic attack.


Are window films bulletproof? No. However, impressive anti-breach performance can be expected from properly installed glass film solutions. RiotLite from DefenseLite is a cost-effective solution for protecting buildings from active shooters by holding glass intact after an attack. By reinforcing the glass, RiotLite slows down the shooter's access and reduces the likelihood of entry into a ‘soft target’ like a school or campus building. This clear security window film is not ballistically rated, but can withstand serious ballistic attacks, providing a level of protection like factory laminated glass at a much lower cost. With RiotLite from DefenseLite, building entry, lobby and podium glass can be made safer without breaking the bank.


Active shooter mitigation is a critical concern for schools, municipal and office buildings. Ground level building glass has been identified as a structures weak link needing to be fortified. Designed to delay entry through existing glazing, RiotLite has been tested and has demonstrated to keep an aggressive attacker on the exterior of a building for up to 60 seconds or more. RiotLite is a forced entry glazing system that is stackable, allowing film constructions up to 36 mils thick. RiotLite is specifically designed to stop active shooters from entering occupied spaces for up to 60 seconds. When faced with an attack, this security film system responds by preventing bullets from shattering the glass, effectively stopping the shooter from gaining access through broken window or door glass. Although commonly referred to as “bullet resistant” or “ballistic window film”, these retrofit security film products are better categorized as effective and economical forced entry security glazing solutions.

About RiotLite

Active Shooter Mitigation FAQs

What does active shooter mean?

According to the U.S. Department of Homeland Security, an active shooter is “an individual actively engaged in killing or attempting to kill people in a confined and populated area; in most cases, active shooters use firearms and there is no pattern or method to their selection of victims.”

Active shooter mitigation is a term used to describe techniques, materials and security measures used to prevent and slow individuals attempting to harm people in schools, malls, movie theaters, hospitals, etc. with firearms.

Are school windows bullet proof?

Whether or not school windows are “bullet proof” really depends on the school and the individual decisions they have made about how to increase their security. Many schools do install bullet-resistant glass as a way to slow any dangerous individuals who attempt to gain entry. It is a very effective way to increase school security and prevent active shooter situations.

If you’re looking to install “bullet proof” products in your school windows and doors, BulletShield is DefenesLite’s bullet-resistant derivative. It is ballistic rated and has been independently tested to meet UL752 standards.

How to prepare for an active shooter?

One of the first things you should do to prepare for an active shooter is to conduct a site assessment. Examine the school grounds for points of weakness like unlocked doors, vulnerable window and door glass, or line of sight issues with security cameras.

You should also explore and update evacuation routes so students and staff know the safest way to escape. Once you have done this audit, you can really analyze the best ways to improve security and prepare for an active shooter situation.

How can we improve school security?

There are a number of ways to improve school security. First, school administrators should institute a closed campus policy since most shooters will first attempt to gain access through the school’s main entrance. Doors should be locked during school hours and security cameras installed. Visitors to the campus should be limited and screened before entering.

You should prepare students and staff with at least two evacuation routes and run active shooter drills to ensure that students know what their escape route is. Staff should be trained to recognize and respond to potential security threats.

Reinforce door and window glass on at least the main floor with a bullet-resistant product like BulletShield. While there is no such thing as “bulletproof glass”, these bullet-resistant products do stand up to numerous attempts at breach with a firearm. The ultimate goal is to slow the intruder down to allow time for law enforcement to arrive. This is a highly effective solution for improving school security.

How to prepare for a school shooting?

One of the best ways to prepare for a school shooting is to install technology that will slow and prevent the shooter from ever entering the building. This means installing locks and security cameras at entrances and reinforcing door and window glass on the main floor (particularly around entrances) with a security product like BulletShield.

Additionally, it is important to prepare students and staff for the possibility of an active shooter situation. Evacuation routes should be placed in all major hallways and stairwells and students should be educated on escape plans and other safety measures.

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