Protected Windows for Critical Infrastructure: Blast, Ballistic and Forced-Entry Rated Glazing Systems
Protection of structural openings is one of the most challenging aspects of security engineering because windows must simultaneously provide visibility, natural light and architectural integration while resisting extreme threats. According to the official Atmas Group documentation, its protected window systems are designed for blast resistance, ballistic protection and forced-entry resistance, with customized solutions for different project requirements and applications. The systems combine specialized composite materials, laminated glazing and reinforced structural frames while maintaining an architectural appearance suitable for public and commercial buildings. Atmas Group
Introduction
Windows are traditionally among the weakest elements of any protected structure. During explosions, ballistic attacks or forced-entry attempts, failure of glazing and supporting frames can compromise both occupant safety and structural integrity.
Atmas Group offers a range of protected windows intended for civil defence shelters, government buildings, embassies, military facilities, industrial plants, commercial buildings and other critical infrastructure. The manufacturer states that these systems can be customized according to project-specific protection requirements while maintaining an aesthetic appearance suitable for integration into modern architecture.
Official product information:
Company website:
The company describes these products as part of its broader portfolio of structural opening protection technologies for protective facilities and critical infrastructure. Atmas Group
Design Philosophy
According to the manufacturer, protected windows are intended to combine:
Blast resistance
Ballistic protection
Forced-entry resistance
Architectural integration
Project-specific customization
Unlike conventional security glazing, these systems are designed as complete protective assemblies in which glazing, frame materials and supporting structures operate together during high-energy loading conditions. Atmas Group
Product Categories
The official product page presents four principal solution categories.
1. Bulletproof Windows
According to Atmas Group, bulletproof windows provide protection against ballistic threats while maintaining transparent visibility.
The company states that these systems comply with internationally recognized protection standards, including:
American NIJ 0108.01
European EN 1522 (up to FB7)
NATO STANAG 4569
The windows are described as being manufactured using advanced composite materials together with laminated glazing.
Applications listed by the manufacturer include:
Banks
Government buildings
Embassies
Military facilities
Safe rooms
Key features listed on the official page include:
Certified protection against high-caliber ballistic threats
Fixed, sliding, tilt and custom window configurations
Integration with transaction drawers
Optional blast and forced-entry resistance Atmas Group
2. Blast Proof Windows
Blast-proof windows are presented as systems engineered to withstand explosion-generated pressure loads.
According to the manufacturer, these windows are:
tested to resist blast pressures up to 5 bars
manufactured using reinforced composites, steel and aluminum profiles
capable of combining blast, ballistic and forced-entry protection
The company lists the following applications:
Critical infrastructure
Military bases
Industrial facilities
Embassy compounds
The official specifications also state:
resistance to extreme blast pressures and shockwaves
compliance with GSA Level 1 blast ratings
compliance with GSA TS01-2003
architectural appearance suitable for secure and public-facing buildings Atmas Group
3. Forced-Entry Rated Windows
Atmas Group also offers windows specifically intended to resist manual and tool-assisted intrusion.
According to the manufacturer, these systems are designed to withstand attacks using:
crowbars
hammers
saws
drills
The official page states compliance with:
EN 1627 RC4
Construction is described as consisting of:
reinforced security glazing
reinforced structural frames
Suggested applications include:
retail stores
warehouses
secure facilities
residential buildings requiring enhanced security
Officially listed features include:
high resistance against manual and electric burglary tools
multi-layer glazing with anti-shatter technology
reinforced structural frames
optional blast and ballistic upgrades Atmas Group
4. Cable-Catch Systems for Windows
The product page additionally presents cable-catch systems intended to reduce hazards associated with shattered glazing following an explosion.
According to Atmas Group, these systems are designed to:
absorb blast-wave energy
prevent glass fragments from causing injuries
remain visually unobtrusive through concealed installation
The official page specifies:
protection against blast pressures up to 150 kPa (15 PSI)
discreet installation behind windows
cost-effective installation
low maintenance
certification according to GSA TS01-2003 Atmas Group
Materials and Engineering
The official documentation describes the protected window systems as utilizing combinations of:
reinforced composite materials
laminated security glass
steel structural elements
aluminum framing systems
The manufacturer emphasizes that the systems are engineered as integrated protective assemblies rather than standard architectural windows fitted with security glazing. Atmas Group
Typical Applications
According to Atmas Group, protected windows are intended for:
Civil defence shelters
Government facilities
Military installations
Embassies
Critical infrastructure
Industrial facilities
Commercial buildings
Secure offices
Safe rooms
Banking facilities
The broader company portfolio also includes complementary protective systems such as blast doors, shutters and reinforcement technologies that can be integrated within the same protected facility. Atmas Group
Integration into Protection Systems
The manufacturer positions protected windows as one element within a comprehensive building protection strategy.
According to the official website, these systems may be combined with:
blast-resistant doors
protective shutters
structural reinforcement systems
blast mitigation technologies
ballistic protection solutions
forced-entry protection products
This integrated approach is intended for both new construction and retrofit projects. Atmas Group
Conclusion
According to the official Atmas Group product information, the Protected Windows portfolio includes specialized glazing systems designed for blast, ballistic and forced-entry protection while maintaining architectural functionality. The range comprises bulletproof windows, blast-resistant windows, forced-entry-rated windows and cable-catch systems, each intended for different security requirements. The manufacturer specifies compliance with standards including NIJ 0108.01, EN 1522, EN 1627 RC4, NATO STANAG 4569 and GSA TS01-2003 for applicable products, and states that the systems are intended for deployment in government facilities, military infrastructure, embassies, industrial sites and other critical infrastructure requiring enhanced protection. Atmas Group
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