NCC 2022 Volume 1 Facade Calculator
This table covers the most important aspects you need to know:
| Aspect | Details |
|---|---|
| Weatherproofing | - New Deemed-to-Satisfy provisions added for the first time - Clause F3D3 implies sarking used per AS4200 is sufficient for weatherproofing - Concerns raised about tall buildings/high wind loads where sarking can tear - AS 4284 recommended for testing facade systems |
| Bonded Laminates | - Clause retained in NCC 2022 - New provision prevents fixing certain panels by adhesive only - Reinforces compliance of products like Vitracore G2 panels |
| Fire Resistance | - More materials approved as non-combustible - Simplifies product choice and reduces certification costs - Applies to recladding and replacement of combustible cladding |
| Sustainability & Thermal | - Section J changes not included in latest preview - No significant changes planned for this version - More clarity desired on sustainability topics |
| Accessibility | - New 'consistent volume structure' adopted - Clause referencing system for better consistency - Performance requirement to prevent fire spread now C1P2 (formerly CP2) - Reorganized content for improved user experience |
| Glazing Requirements | - Specific U-value and SHGC allowed for all windows across stories - Impact of flooring and framing color considered - Any U-value acceptable in climate zone 1, any SHGC in zone 8 - Generally improved windows across climate zones 2 to 7 - ~20% improvement in U-value, ~30% in SHGC (zones 2-7) |
| Performance Verification | - F3V1 provides means to verify external wall compliance with F3P1 - Not mandatory, but can be used to demonstrate compliance - Includes test procedures for different wall types |
This table provides a comprehensive overview of the key changes and requirements for facades in NCC 2022 Volume 1. It's important to note that for specific projects, consulting the full NCC documentation and seeking expert advice is recommended to ensure complete compliance.