BAL-40 Rated Windows & Doors

Tested Bushfire Solutions for High-Risk Sites

Designed for BAL-40 Bushfire Conditions

Designing in bushfire-prone areas requires a considered approach to façade performance, compliance and constructability. BAL-40 represents a very high bushfire attack level, where buildings are exposed to severe radiant heat, ember attack and the potential for direct flame contact.

BAL-40 rated window and door systems provide a tested, compliant solution for projects in high-risk bushfire zones, supporting both regulatory requirements and architectural intent.

Understanding BAL-40

The Bushfire Attack Level (BAL) assessment determines the construction requirements for a site under AS 3959 – Construction of Buildings in Bushfire-Prone Areas.

BAL-40 applies to sites where radiant heat flux can reach up to 40 kW/m², there is a high likelihood of ember attack, and exposure to burning debris and potential flame contact is possible.

Tested Systems vs Deemed-to-Satisfy

BAL-40 compliance can be achieved either through deemed-to-satisfy construction methods or through laboratory-tested systems.

Tested BAL-40 window and door systems have undergone full-scale fire testing to Australian bushfire standards, provide verified performance, reduce uncertainty during certification and approval, and can be specified across lower BAL zones.

Key Performance Benefits

Reduced reliance on screens supports cleaner façade aesthetics, improved daylight access and better visual connection.
Thermally broken aluminium frame options allow bushfire compliance without compromising energy efficiency or occupant comfort.
Architectural flexibility enables integration with contemporary detailing while balancing durability and performance.

Specification Confidence

Specifying BAL-40 tested systems provides verified compliance with AS 3959, reduces certification risk, and delivers clear documentation for bushfire consultants and building surveyors.

  • Design Considerations

    Design Considerations

    BAL-40 systems are designed to reduce ignition risk and support life safety during bushfire events. They are not intended to remain fully operational after extreme fire exposure, and appropriate egress planning should be incorporated.

  • BAL-40 Solutions for High-Risk Projects

    BAL-40 Solutions for High-Risk Projects

    BAL-40 tested window and door systems provide architects with a reliable, specification-ready solution for bushfire-prone environments without compromising architectural outcomes.