Concentric Security Perimeter Security Solutions Fencing Systems
Glass Hazard Mitigation Systems

Glass Hazard Mitigation Systems

Concentric Security's glass hazard mitigation systems are designed for reducing personal injury in the event of a bomb blast or severe weather event or for reducing loss of property in the event of a theft attempt. The systems offered accomplish this by mitigating the potential for flying window glass fragments if an event were to occur.

Concentric Security offers several glass hazard mitigation systems. System selection for each project is dependent on the project's requirements and the existing site conditions. Systems are typically installed as a retrofit to existing windows; however the systems can be installed as new construction to new windows.

System Configuration Options

  • Fragment retention window film (FRF) installed in a daylight configuration – FRF is installed to the daylight area of the window only.
  • FRF and silicone installed in a wet glaze attachment configuration – FRF is installed to the daylight area of the window and silicone is installed around the perimeter on all four sides overlapping the edge of the FRF creating a chemical attachment to the window frame
  • FRF and a mechanical attachment system installed in a mechanical attachment configuration – FRF is installed to the daylight area of the window leaving excess FRF and the mechanical attachment system (along with the excess FRF) is mechanically attached to the window frame (system can be a one-sided, two-sided, or 4 sided mechanical attachment configuration)

The glass hazard mitigation products offered are based on live, full scale bomb blast testing performed by independent testing agencies. The testing is based on the General Service Administration's (GSA's) standards for measuring blast protection.

Performance Condition Protection Level Hazard Level Description of Window Glazing Response
1 Safe None Glazing does not break. No visible damage to glazing or frame.
2 Very High None Glazing cracks but is retained by the frame. Dusting or very small fragments near sill or on floor acceptable.
3a High Very Low Glazing cracks. Fragments enter space and land on floor no further than 3.3 ft. from the window.
3b High Low Glazing cracks. Fragments enter space and land on floor no further than 10 ft. from the window.
4 Medium Medium Glazing cracks. Fragments enter space and land on floor and impact a vertical witness panel at a distance of no more than 10 ft. from the window at a height no greater than 2 ft. above the floor.
5 Low High Glazing cracks and window system fails catastrophically. Fragments enter space impacting a vertical witness panel at a distance of no more than 10 ft. from the window at a height greater than 2 ft. above the floor.
* GSA/ISC Glazing Protection Levels Based On Fragment Impact Locations

Typical Uses

  • Government buildings and facilities
  • Government Contractor buildings and facilities
  • Military buildings and facilities
  • Commercial buildings
  • Buildings and facilities in proximity to potential targets

Typical Applications

  • Government and Commercial buildings where there is a risk of a bomb blast attack or where the risk is high for severe weather events (earthquakes, hurricanes, etc.)
  • Commercial buildings where there is a risk of loss of property (smash and grab)
  • Facilities in proximity to other buildings which are deemed to be a target (target by proximity)

General Features

  • 4-Mil to 15-mil thick fragment retention film (film can be clear or tinted)
  • Silicone for wet glaze attachment configuration

Extruded aluminum rails, tape, fasteners, extruded aluminum caps, and vinyl gasket materials for mechanical attachment configuration