888-321-1473

What is the Typical Delay Time for Forced Entry with Window Film?

by | May 19, 2026

The forced entry delay provided by security window film varies significantly based on the film thickness and the attachment system utilized. According to ASTM F1233 testing results, approximate delay times include:

  • 4 mil film without an anchor: 10 to 30 seconds.
  • 4 mil film with a wet-glazed or mechanical anchor: 30 to 60 seconds.
  • 8 mil film with a wet-glazed or mechanical anchor: 60 to 120 seconds.
  • 12 mil film with an advanced mechanical attachment: 2 to 5 minutes.

These timeframes are estimates and not guarantees, as real-world performance is influenced by the attacker’s tools, techniques, and the current condition of the window frame. Proper anchoring, such as wet-glazing or mechanical systems, is essential for these performance levels, as film applied without such systems offers minimal resistance. It is critical to note that security film is not bullet-resistant and should not be used for ballistic protection.

Related FAQs