Protective glass solutions come in all forms, but not all of them serve the same purpose.
Ballistic glass and security window film are two of the most common options, and they’re often misunderstood.
Both enhance safety. But they’re built for very different threats.
In this blog, we’ll break down how each one works, where they perform best, and how to decide which is right for your facility.
What Is Ballistic Glass?
Ballistic glass is designed to stop bullets. It’s made by layering multiple sheets of glass and polycarbonate, creating a strong laminated structure. When a round is fired at it, the glass absorbs and disperses the energy, keeping it from fully penetrating.
It’s rigorously tested to standards like UL 752 and NIJ levels, meaning it’s been proven to stop specific types of firearms and ammunition. You’ll find ballistic glass in places like:
- Government facilities
- Military installations
- Banks
- Law enforcement buildings
- Guard booths
Bottom line: Ballistic glass is made to protect lives from gunfire.
What Is Security Window Film?
Security film is a thin, clear adhesive layer applied to existing glass. It’s not bulletproof, but it’s built to hold shattered glass together when impacted.
Its main purpose is to slow down intruders by preventing easy break-ins and to protect people from flying glass during accidents or natural disasters. It's a budget-friendly upgrade used in:
- Schools
- Storefronts
- Office buildings
- Homes
It won’t stop bullets, but it will make glass harder to break and help reduce injuries.
Why the Confusion?
The line between ballistic glass and security film can seem blurry, especially with the way some products are marketed.
Terms like “shatterproof,” “impact-resistant,” or even “bullet-resistant film” can make it sound like security film offers the same level of protection as ballistic-rated materials. But those phrases aren’t regulated, and they can be misleading.
Some buyers also assume that if film keeps glass from breaking apart, it must be bulletproof. In reality, film holds shattered glass together to slow entry or prevent injuries; however, it doesn't stop bullets from penetrating.
The confusion usually comes down to two things:
- Misleading language in product advertising
- Lack of awareness about how threat levels are tested and rated
Knowing the actual performance differences is key to choosing the right solution before an incident puts it to the test.
Key Differences at a Glance
| Feature | Ballistic Glass | Security Window Film |
|---|---|---|
| Bullet Resistance | ✔️ Yes | ❌ No |
| Break-In Delay | ✔️ Yes | ✔️ Yes |
| Shatter Resistance | ✔️ High | ✔️ Moderate |
| Installation | New window or full panel | Applied to existing glass |
| Cost | Higher | Lower |
| Best For | High-threat sites | Light security needs |
Which One Should You Choose?
The choice between ballistic glass and security film comes down to the type of threat you’re preparing for.
If your building is at risk of gun violence, such as an active shooter, armed robbery, or targeted attack, ballistic glass is essential. It’s engineered to stop bullets, maintain structural integrity, and buy valuable time for response teams to act. Facilities like government offices, military bases, and high-security checkpoints rely on it for a reason.
On the other hand, security window film is a solid choice for lower-threat environments. It won’t stop a bullet, but it can delay intruders during break-in attempts and protect people from flying glass during accidents or severe weather. Schools, retail spaces, and offices often use film as an affordable way to boost safety.
It’s not just about budget. It’s about risk.
Ask yourself:
- Is your site a likely target?
- Are lives at stake in the event of an attack?
- What level of protection would give you peace of mind?
Knowing the answers helps you avoid false confidence in the wrong solution.
Contact Kontek Industries
When you need ballistic-rated glass to protect employees and sensitive areas, Kontek Industries can provide you with the type of protection you need. We design and supply ballistic glass and window systems with protection for UL 752 and NIJ standards up to and including .50 caliber armor-piercing projectiles.
Our ballistic glass will help Improve the safety and survivability of people within the buildings and structures that you look to protect with bullet-resistant polycarbonate glass. We also provide a variety of window tint options and decorative window furnishings. Contact the office at Kontek Industries today to discuss your needs.
