Engineered for Bushfire-Prone Areas - BAL-29 Compliant Windows & Doors

BAL-29 is a Bushfire Attack Level defined by AS 3959, representing moderate bushfire risk with ember attack and radiant heat exposure. BAL levels are determined through formal bushfire assessment by qualified assessors who evaluate vegetation type, slope, distance from fire sources, and Fire Danger Index for your location. Perth properties in designated bushfire-prone areas require BAL assessment before building permits are issued. Your assessment report specifies construction requirements for all building elements, including windows and doors.

AS 3959 and industry guidance typically specify 5mm toughened glass for BAL-29 windows to resist radiant heat and ember impact. When double glazing is used, the toughening requirement usually applies to the outer pane, the one exposed to bushfire conditions. Some tested systems may vary from these typical specifications while still achieving BAL-29 certification, which is why following manufacturer specifications for certified products is essential. Always confirm glazing requirements with your building surveyor and selected window system documentation.

Yes, BAL-29 windows require ember protection, typically achieved through screens with maximum 2mm mesh aperture. These bushfire screens, often stainless steel mesh, prevent ember entry while allowing ventilation. However, some windows tested to AS 1530.8.1 integrate ember protection within the certified assembly, potentially eliminating separate screen requirements when installed as tested. The screen requirement depends on whether you’re using a tested system approach or complying via AS 3959 deemed-to-satisfy pathways with separate screens.

Not always. Shutters are sometimes required at BAL-29, depending on your window and door systems. Windows tested and certified to AS 1530.8.1 for BAL-29 may achieve compliance without separate shutters, as the tested assembly includes integrated ember protection and compliant glazing. If you’re using non-tested systems or complying via AS 3959 prescriptive requirements, you may need bushfire shutters or screens in addition to compliant frames and glazing. Your BAL assessment and building surveyor confirm which approach suits your project.

Yes, sliding doors can be installed in BAL-29 areas with appropriate compliant systems and screens. Sliding and stacker door assemblies require careful integration of ember screens at track areas and precise gap control to prevent ember infiltration. Many manufacturers offer tested BAL-29 sliding door systems that simplify compliance when installed to specifications. Avoid generic or non-compliant installations, work with suppliers who understand bushfire-rated sliding door assembly requirements and can provide proper documentation for building approval.

No, these are fundamentally different systems. FRL (Fire Resistance Level) products are designed for internal building fire separation and compartmentation, tested to AS 1530 parts 4 or 8.2. They prevent fire spread between building sections during structural fires. BAL-29 systems resist external bushfire attack, ember penetration and radiant heat from wildland fires, under AS 3959. Some projects may require both types of protection (bushfire-rated for external threats and fire-rated for internal fire separation), but they serve distinct purposes and are not interchangeable.

Most BAL-29 window and door installations in Perth are completed within several days to one week, depending on project size and complexity. Custom orders for tested systems may have longer lead times for manufacturing, but installation itself typically proceeds quickly with experienced teams. We work efficiently to minimise disruption while maintaining strict compliance with installation specifications, critical for BAL certification. Timeline factors include site access, number of openings, retrofit complexity, and any structural preparation required. We provide realistic schedules during quoting.

Yes, we provide complete compliance documentation including manufacturer testing certificates, installation records, product specifications, and compliance declarations required for WA Building and Energy approval processes. This documentation is essential for building permit sign-off and for insurance applications in bushfire-prone areas. We understand what building surveyors and certifiers need to verify BAL-29 compliance, and we ensure you receive organised, comprehensive records that support smooth approval and future reference. Proper documentation is part of every Penot BAL installation.

BAL-29 sits in the middle of the bushfire risk spectrum. BAL-Low and BAL-12.5 represent lower risks with less stringent requirements, while BAL-40 and BAL-FZ (Flame Zone) require more robust protection. At BAL-29, you face moderate ember attack and radiant heat, requiring specific construction measures including ember screens, toughened glass, and compliant frames. Higher BAL levels may require additional protection like external shutters or more robust materials. Your BAL assessment determines your specific level based on site conditions.

Yes, BAL-29 windows and doors can be retrofitted to existing homes, though it’s more complex than new construction. Retrofits require careful measurement, frame preparation, and ensuring compliance with gap tolerances and sealing requirements. Existing openings may need modification to accommodate compliant systems. We assess your specific situation, recommend appropriate solutions, and ensure installation meets all BAL-29 requirements. Retrofitting is common when properties are renovated, extended, or when BAL requirements change due to nearby development or vegetation changes.