Data Centers & Critical Infrastructure | FSJ Tactical
Data Center Security Glazing, Bullet Resistant Windows & Security Doors
Protect critical infrastructure, uptime, and the people who keep it running with DefenseLite forced-entry glazing, bullet resistant film systems, and secure doors from FSJ Tactical.
A data center's walls, cages, and access control systems are only as strong as its weakest opening. Lobby glass, office windows, and glass doors can let an intruder bypass millions of dollars of security in seconds. FSJ Tactical hardens those openings with DefenseLite security glazing so your critical infrastructure stays protected.
Glass: The Overlooked Vulnerability
Data centers are designed for physical security, but many still include glass at visitor lobbies, office areas, network operations centers, and loading areas. Annealed or tempered glass is easy to breach. Even glass treated with thick security film is far easier to defeat than a DefenseLite polycarbonate shield, which is about 250 times stronger than glass.
Solutions for Data Centers
Lobby & Visitor Entrances
BulletShield ballistic glazing and AccessShield door re-glazing provide forced-entry and UL 752 ballistic resistance where visitors enter.
Perimeter & Office Windows
DefenseLite Pro delivers ASTM F3561 Level 8 forced-entry resistance plus blast and hurricane testing for exterior glass.
Server Rooms & Control Centers
Bullet-resistant doors with UL 752 cores, compatible with existing access-control hardware and low-voltage systems.
NOC & Command Center Safe Zones
SafeSuite converts command centers and operations rooms into hardened safe zones with glazing, wall panels, and secure doors.
Tested for Multiple Threats
Data centers must plan for more than intruders. DefenseLite Pro and BulletShield have been system-tested for:
- Forced entry: ASTM F3561 Level 8 and ASTM F1233 Class 2.4
- Blast: ASTM F1642 Class 10 psi and 90 psi-msec
- Hurricane impact: ASTM E1886/E1996, Miami-Dade wind zone 5
- Ballistic: UL 752 ratings (BulletShield)
Protect Uptime and Efficiency
Unlike full glass replacement, DefenseLite installs over existing glazing with no structural changes, which means less disruption in a facility where downtime is unacceptable. The insulated air gap improves the energy performance of existing glass, and solar-control options reduce heat gain in office and support spaces, helping limit cooling demand.
Layered Security with Zones of Defense
FSJ Tactical applies the Zones of Defense approach to critical facilities:
- Zone 1: Visitor entry, lobby, and any glass at the secure perimeter
- Zone 2: Side entries, office windows, and loading areas
- Zone 3: Interior glass and doors around server halls, NOCs, and control rooms
Close the gaps in your physical security. FSJ Tactical will assess your facility's glazing and doors and recommend tested solutions that integrate with your existing access control.
Security Film + Glazing
See It Stop a Threat: FSJ Tactical Live Fire Demos
Request a live fire demonstration of our products on any existing drywall or glass.



Peace of Mind: Installed
Recent FSJ Tactical projects for school districts, cities, and counties. Over 500,000 square feet protected.




Installation available in every state
NATURAL DISASTERS
Security film and polycarbonate glazing hold glass in place against storms, debris, and blasts.
CRIME
Forced-entry and ballistic protection delays attackers and buys time for law enforcement to respond.
PEACE OF MIND
FSJ Tactical protects occupants and assets with an industry-leading warranty and nationwide installation.
Frequently Asked Questions
Why do data centers need security glazing?
Lobby glass, office windows, and glass doors are often the weakest points in an otherwise hardened facility. Retrofit security glazing keeps an intruder from bypassing access control by simply breaking the glass.
Can installation happen without affecting operations?
Yes. DefenseLite systems retrofit over existing glass and frames, with no structural modifications and minimal dust or vibration. Work can be phased around maintenance windows.
Does DefenseLite help with cooling loads?
The insulated air gap created by a DefenseLite overlay improves the thermal performance of existing glass, and solar-control options reduce heat gain, which can help reduce cooling demand in office and support areas.
What about doors to server rooms and control centers?
DefenseLite bullet-resistant doors with UL 752 Level 1–8 cores, compatible with any handle or locking system and available with low-voltage options, secure server rooms, control rooms, and other high-risk interior areas.
Let's talk about your project...
Talk with the FSJ Tactical team about a site assessment. We'll walk your building, identify the glass and doors at highest risk, and recommend the DefenseLite security glazing level that fits your threats and your budget.

