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Security Film vs Ballistic Glass: A Specifier's Comparison
Security film and ballistic-resistant glazing solve different problems. Delaware Title 14 §2306(b)(2) lists both as options for covered visitor-screening areas — SB 273 makes clear they are distinct product families.
The Short Answer
- Security film helps retain fractured glass; in a tested film, attachment, and frame assembly it can help delay forced entry.
- Ballistic-resistant glazing is rated to stop specified projectiles — the rating belongs to the exact tested assembly.
- Delaware §2306(b)(2) lists ballistic-resistant glass or material, or security film, for covered areas; SB 273 clarifies the two are distinct.
Head-to-Head Comparison
- Function: fragment retention and entry delay vs. rated projectile resistance.
- Installation: retrofit onto existing glass vs. glazing replacement engineered into the frame.
- Budget and lead time: film-based scopes are typically the lighter lift; rated assemblies carry glazing, framing, and structural costs.
- Appearance: clear film is near-invisible; rated glazing thickness varies by level.
How to Decide Opening-by-Opening
- Start from the statute's covered areas for qualifying projects: secured vestibules, lobbies, visitor-screening offices.
- Let the project's threat assessment and design review drive product selection at each opening.
- Phase remaining openings as voluntary hardening if the district chooses.
What “Ballistic Film” Is and Is Not
- There is no window film that is bullet-resistant on its own; film is one layer in an assembly.
- Ballistic-resistant performance is claimed only for a complete tested system — for example a glass-strengthening treatment combined with a specified 3M Ultra film build — and only at the tested configuration and threat level.
- Searches for “ballistics film” usually land on one of two real products: security film for retention and delay, or an engineered ballistic-resistant system.
Delaware Project Evidence
- Red Clay Consolidated School District: window-film projects completed across 14 schools, including C-Bond ballistic-system work.
- Sussex Academy and Seaford School District: documented security-film installations on existing glazing.
- Milford Middle School: documented ballistic window film project.
Planning a Delaware school glazing project?
We survey every opening, document the product options — security film with engineered attachment or tested ballistic-resistant assemblies — and deliver a board-ready report with phased pricing.
Frequently Asked Questions
Is standard security film ballistic-resistant?
No. Standard security film helps retain fractured glass, and in an appropriate tested film, attachment, and frame assembly it can help delay forced entry. Stopping projectiles requires ballistic-resistant glazing or a complete ballistic-resistant system tested to a recognized standard — and the rating belongs only to that exact tested configuration.
Can I install security film on existing glass?
Yes. Security window film with an engineered attachment system is one retrofit approach used on Delaware schools and commercial buildings, installed without replacing the glass. Performance depends on the whole assembly — glass, film, attachment, and frame condition.
Does security film satisfy Delaware's school glazing law?
Title 14 §2306(b)(2) lists security film as one of three options for secured vestibule, lobby, and visitor-screening office areas in new construction and major renovations. Whether a specific product and installation satisfies a specific project's requirements is confirmed through the project architect and Delaware's applicable state review process.
Reviewed by
Cody Becker — School Security Glazing Consultant