High-security entry points demand glazing solutions that balance transparency with robust protection against forced entry, ballistic threats, and environmental hazards. From government buildings to commercial facilities and critical infrastructure, specifying the right glass types is essential for safety, aesthetics, and compliance.
For procurement and security professionals, understanding the options in security glazing empowers informed decisions tailored to threat levels and operational needs.
Key Security Glass Types
Laminated Glass
Consists of multiple glass layers bonded with interlayers like polyvinyl butyral (PVB).
Holds together when shattered, resisting forced entry and reducing injury risk.
Used widely for burglary resistance and impact mitigation.
Tempered Glass
Heat-treated for increased strength; breaks into small, blunt pieces.
Often combined with laminates for enhanced security.
Provides improved resistance to impact but less than laminated glass alone.
Ballistic Glass
Multi-layered glazing with polycarbonate and glass layers.
Rated to withstand various ballistic threats per UL 752 or NIJ standards.
Used in government, financial, and high-risk security facilities.
Polycarbonate Glazing
Lightweight, impact-resistant plastic used as inner layers in laminated systems.
Offers high toughness but scratches easily without protective coatings.
Security Film Applications
Retrofitted films applied to existing glazing enhance impact resistance.
Cost-effective for upgrading security without full replacement.
Performance Ratings and Standards
UL 972 Burglary-Resistant Glazing: Defines levels of forced entry resistance.
UL 752 Ballistic Resistance: Classifies ballistic protection from handguns to rifles.
ASTM Standards: Include impact testing and safety performance.
Design Considerations
Thickness and weight impact framing and hardware specifications.
Transparency and optical clarity for visibility and aesthetics.
Fire ratings if glazing is part of fire-rated assemblies.
Integration with access control and alarm systems.
Installation and Maintenance
Use tested glazing and framing systems for warranty and compliance.
Ensure proper sealing and edge protection to prevent delamination.
Routine inspections to detect damage or degradation.
Conclusion
Selecting the best glass types for high-security entry points requires balancing threat levels, building design, and operational needs. Laminated and ballistic glasses, often combined with polycarbonate layers and security films, provide effective barriers against intrusion while maintaining transparency.
Procurement teams who specify certified, tested glazing solutions enable safer facilities and peace of mind for occupants and stakeholders alike.
