Bullet-Resistant Windows vs. Security Film: Costs, Capabilities and Applications

As a general rule, you should use security window film to protect property, and you should use bulletproof glass to protect people. 

Security window film is an excellent tool; it’s a cost-effective, quick way to improve physical security, reducing the risk posed by vandalism, break-ins, extreme weather, and accidents. We often recommend using window film in concert with bulletproof glass. But it doesn’t solve every security challenge. Most importantly, "ballistic" film for windows does not stop bullets. 

Comparing Security Window Film and Bulletproof Glass

Ballistic Window Film Does Not Equal Bullet-Resistant Windows

Security window film is sometimes marketed as ballistic window film, but this is a misnomer. The correct term is security window film, and it's typically applied over existing glass. A ballistic window film's low-cost "solution" is often a good indicator of whether you should trust its ability to actually stop a bullet. The other is UL 752 compliance. If you have questions about whether security film can stop a bullet or want more information about how to use security window film with ballistic glass, please contact TSS. 

Using Ballistic Glass and Security Window Film Together

Both products have their uses when it comes to physical security; ideally, they’re used together. 

Security window film can be used in areas where you do not need to protect people, but would like to prevent windows from shattering out. Films can also be used on upper-level exterior windows for storm and earthquake protection to reduce injury from broken glass, or in non-populated areas to delay forced-entry attacks.

Bulletproof glass—engineered security glazing designed to stop ballistic threats—is a very effective tool for protecting people from bullets. To prevent an armed assailant from endangering human lives, bulletproof glass windows can be installed in entryways, transaction lines, offices, safe rooms, and many more locations. 

Is Security Film Worth It?

If security window film fits your threat level, then it is certainly worth the investment. It is a cost-efficient and effective solution for non-ballistic threats.

When it comes to safety, we always encourage people to do their due diligence in choosing a product that will perform as intended. Unknown sellers’ and drop-shippers’ products may not have the proven durability and performance that you’ll get with a reputable manufacturer.

Installation is another consideration for window film. It is certainly possible to DIY the install, but we recommend using an experienced professional to make sure the job is done correctly. They will make sure the film is applied cleanly and evenly, with no bubbles or creases. While these may sound like aesthetic issues, they can also affect the performance of your security window film.

Similar to bulletproof glass, there are also factors that can impact the pricing of a security window film project. Some of those factors include:

• Working with French panes
• Difficult working conditions
• Removal of existing film
• Moving furnishing
• High ladder work, swing stages, scaffolding, or lifts

How to Understand the Cost of Bullet-Resistant Glass

Although costs for bullet-resistant glass run higher than security film, it’s an apples-to-oranges comparison. The two products meet different security needs; bullet-resistant glass often serves multiple purposes, often being tested to forced entry, explosive blasts, and hurricane winds standards.

The Underwriters Laboratories (UL) 752 standard assigns the material a specific level indicating how many of what caliber bullets it can stop, based on certified lab testing. Levels 1 to 3 satisfy the needs of many customers who need protection from handguns;  Levels 4 through 8 stop shots from rifles, and are becoming increasingly common in government buildings, schools, and other spaces.

Costs depend on square footage and additional features and accessories you may need, such as doors, currency trays, or package passers.

Barriers with bullet-resistant glass or glazing typically start at $2,000, depending on the material used and the protection level needed. Full systems range from $15,000 to $30,000 or more, depending on customization needs and the level of protection.

To get an idea of what a bulletproof barrier or barrier system might cost you, reach out to us for a quote. 

Let’s Talk About Your Security Goals

If you’re not sure what product or system is right for your application, call an expert like Total Security Solutions for help. A strategy may use a mix of both security solutions, such as putting bulletproof windows on the ground floor where people are present and security window film on upper levels where people aren't. You can learn more by downloading our guide on Bulletproof Glass or Security Window Film.

If you have additional questions, or you’d like to get started on a quote, just contact us today. We’ll gladly help guide you through your security enhancement. Our team of experienced ballistic security professionals can help you assess your facility and find a solution for both your budget and your protection level.

The product pricings are approximations only and are not intended to replace the quoting process. TSS cannot guarantee that the pricing here will be reflected in your official project quote.

Frequently Asked Questions About Window Film & Bulletproof Windows

Are there industry standards for security window film performance?

Yes. Reputable security window films are often tested to standards like:

• ANSI Z97.1 for impact resistance (like a person running into the glass)
• ASTM E1886/E1996 for hurricane-like impacts (like flying debris)
• UL 972 for anti-intrusion (simulating a burglary attempt)
• GSA Blast testing for resistance to explosive forces

However, none of these standards involve stopping bullets.

Does it matter what kind of glass I apply security film to?

Yes, very much. Security film is only as effective as the glass it’s bonded to. Older windows or unknown manufacturers may not meet today’s structural standards. Even if the film is thick and high quality, weak or brittle glass will compromise the whole system. That’s one reason why film is never used in true bullet-resistant systems: it’s just not reliable for ballistic protection.

What’s the difference between interior and exterior bulletproof glass windows?

The main difference is weatherability. Exterior bulletproof windows must withstand sun, rain, wind, and temperature swings without degrading. That’s why materials like glass-clad polycarbonate (GCP) and insulated ballistic glass are used outside. They’re engineered to resist UV, moisture, and impact. Acrylic and polycarbonate, while effective indoors, can discolor or degrade when exposed to the elements.

What if I need ballistic resistance but can’t change the exterior look of my building?

Backglazing involves installing a layer of bullet-resistant glass behind existing glass. It’s a smart solution for historic buildings, retail storefronts, or modern architecture where appearance matters. It adds ballistic protection without altering the visible façade.