Security Windows
Security windows are designed to enhance resistance against forced entry, accidental impact, and safety-related risks while maintaining transparency, daylight, and architectural intent. Security windows are not a single product, but a combination of glazing, framing, hardware, and installation strategies selected based on project conditions and risk assessment.
What Is a Security Window
A security window is a window system configured to provide increased resistance compared to standard residential windows. This may involve:
- Reinforced or laminated glazing
- Stronger frame and sash construction
- Enhanced locking and hardware systems
- Specific anchoring and installation methods
The level of security depends on the complete system and its configuration. No window is unbreakable, and performance varies by design and resistance level.
Resistance Classes (RC Standards – RC1 to RC6)
Security performance is often referenced using Resistance Class (RC) standards, defined under European testing protocols (EN 1627–1630). These classifications describe increasing levels of resistance to forced entry, tools, and attack duration.
- RC1–RC2: Basic resistance for low-risk applications
- RC3–RC4: Increased resistance against manual and basic power tools
- RC5–RC6: High-level resistance for specialized or high-risk applications
RC classifications are international performance benchmarks. Suitability depends on project use, exposure, code and design intent.
Common Applications in Ontario
Security-focused window solutions are often considered for:
- Ground-floor residential units
- Urban homes and townhouses
- Multi-unit residential buildings
- Retail and mixed-use properties
- Schools, clinics, and public-facing facilities
Each application requires a different level of resistance and configuration.
Security Glazing Options (Overview)
Glazing plays a key role in window safety and security. Depending on the project, this may include:
Laminated & Multi-Layer Safety Glass
- Designed to remain largely intact when broken
- Helps reduce glass fallout and injury risk
- Commonly used to delay forced entry
Specialty Security Interlayers
- Integrated within laminated glass assemblies
- Intended to improve resistance and safety performance
Security Window Films (Supplementary Option)
Security window films may be used as a supplementary safety and security measure, typically applied to the interior surface of existing glass. They are designed to help hold glass fragments together in the event of breakage.
Security films are not a replacement for laminated or certified security glazing, but they may help:
- Reduce glass shatter and fallout
- Improve occupant safety during accidental impact
- Delay forced entry by holding broken glass in place
Performance varies based on film type, thickness, installation method, and edge anchoring. Security films should be considered a risk-mitigation solution, not a security guarantee. They are commonly evaluated where window replacement is not feasible.
Frame, Hardware & Installation Matter
Security performance is not defined by glass alone. It is influenced by:
- Frame material and reinforcement
- Sash design and structural integrity
- Locking hardware configuration
- Anchoring method and surrounding structure
A security window must be evaluated as a complete assembly, not as individual components.
Security vs. Impact vs. Fire (Clarification)
Security windows serve a different purpose than:
- Impact-resistant / hurricane windows (designed for wind-borne debris)
- Fire-rated windows (designed for fire separation and life-safety performance)
While some systems may share materials or testing methods, each category addresses a different risk and must be specified accordingly.
Security-Related Terminology
In professional practice, security windows are often discussed in relation to:
- Forced entry resistance
- Burglar-resistant configurations
- Safety and security glazing
- Risk-mitigation design
These terms describe performance intent, not absolute protection.
How CanaBuild Approaches Security Window Projects
We approach security-focused window solutions by:
- Understanding the project’s exposure and use
- Reviewing glazing and frame options appropriate to the risk level
- Referencing applicable resistance classifications where appropriate
- Coordinating installation methods that support the selected system
Solutions are selected on a project-by-project basis, not as a universal product.
Window Shutters
In applications requiring an added level of protection, shutters may be considered as part of a layered security approach. Shutters can contribute to enhanced security, increased privacy, visual control, and architectural character. They are typically used in addition to security-oriented window systems, not as a replacement.
Professional Installation Available
Installation plays a critical role in the performance of security-oriented window systems. Proper anchoring, alignment, and detailing are essential to achieving the intended level of resistance.
Learn more about our Windows & Doors Installation & Replacement page.
Important Note
Security window performance depends on glazing type, frame design, hardware, and installation conditions. No window system should be assumed to provide absolute protection. Final performance must be evaluated based on tested configurations and project requirements.