No. Security window film does not make glass unbreakable. This is one of the most common misconceptions about safety/security window film, and it is important to address it directly. Glass treated with safety/security film will still break under sufficient impact. What the film does is change what happens after the glass breaks—and that distinction matters significantly for how you evaluate and specify this product. Solar Gard describes its Armorcoat safety/security film family as designed to help hold broken glass together. When glass breaks, the film acts as a bonding layer that keeps the fragments attached to the film rather than allowing them to scatter as dangerous projectiles or shards. This provides several practical benefits: Glass hazard reduction — When glass breaks accidentally (from impact, thermal stress, or structural failure), the film holds the fragments in place, reducing the risk of injury from flying or falling glass. Smash-and-grab deterrence — A window treated with safety/security film does not provide immediate access after a single impact. An intruder must make repeated, sustained strikes to work through the film membrane, which takes time and creates noise—both of which deter opportunistic theft. Forced-entry delay — In appropriate configurations (film, glass, frame, and perimeter attachment specified together), safety/security film can delay forced entry. The delay depends on the complete system, not the film alone. Blast fragment retention — In blast-mitigation applications, safety/security film helps retain glass fragments that would otherwise become high-velocity projectiles. Blast performance depends on the complete tested assembly, including film, glass, frame, standoff distance, and attachment method. It does not make glass unbreakable. Glass will still fracture under sufficient force. The film changes the behavior of the glass after fracture, not the fracture threshold itself. It does not make glass bullet-resistant. Safety/security window film is not ballistic glazing. It is not rated or tested for bullet resistance. Do not represent it as such. It does not guarantee a specific forced-entry delay time. Forced-entry performance depends on the complete system: film thickness, glass type, frame condition, attachment method, and the nature and persistence of the attack. Published delay estimates, where they exist, apply to specific tested assemblies under defined test conditions—not to film alone applied to any window. It does not provide blast resistance on its own. Blast mitigation performance requires a complete specified system—film, glass, frame, and perimeter attachment—tested against applicable standards such as ASTM F1642 or GSA-TS01-2003. Film alone, without appropriate attachment, does not constitute a blast-mitigation system. It does not replace laminated or ballistic glazing where those are required. For applications requiring certified ballistic resistance or specific blast ratings, the appropriate glazing system must be specified and installed. Safety/security window film is a legitimate and widely used protective measure for glass. It is specified by government agencies, schools, retailers, and commercial facilities for glass hazard reduction, smash-and-grab deterrence, forced-entry delay, and blast fragment retention. Its value lies in what it actually does: holding broken glass together, slowing unauthorized entry, and reducing glass-related injury risk. These are meaningful benefits that justify its use in a wide range of applications. The key is accurate specification. If your application requires a specific tested performance level—a particular forced-entry delay, a blast rating, or compliance with a specific standard—contact The Window Place USA for product guidance. For applications requiring a professionally specified and installed assembly, a qualified installer can specify the complete system against the applicable standard. If film doesn't make glass unbreakable, why use it? How thick does the film need to be to be effective? Does the film work on tempered glass? What standards apply to safety/security window film? For higher-security applications or installer-only products, contact The Window Place USA for product guidance and installer coordination. Also see: 4 Mil vs. 7 Mil vs. 8 Mil Safety Film: Which Thickness Do I Need? | Window Film on Tempered or Laminated GlassWhat Security Window Film Actually Does
What Security Window Film Does Not Do
Setting Accurate Expectations
Frequently Asked Questions
Because the behavior of glass after it breaks is what causes most glass-related injuries and enables most smash-and-grab theft. Film addresses that behavior directly. A window that holds together after impact is significantly safer and more resistant to opportunistic entry than one that shatters immediately.
Thickness is one factor in film selection, but it is not the only one. The appropriate thickness depends on the application, glass type, frame condition, and any required tested performance. See our guide to 4 Mil vs. 7 Mil vs. 8 Mil Safety Film for more detail on how thickness fits into the selection process.
Safety/security film can be applied to tempered glass, but there are important considerations related to glass type and thermal stress. See our article on window film compatibility with tempered and laminated glass for a detailed explanation.
Relevant standards include ANSI Z97.1 (safety glazing), ASTM F1233 (security glazing systems), ASTM F1642 (blast loading), and GSA-TS01-2003 (blast fragment retention for federal facilities). These standards describe tested assemblies, not individual film products.Shop Solar Gard Clear Safety Film