AAC
Autoclaved Aerated Concrete (AAC) is a lightweight, non‑combustible wall system that delivers strong fire, thermal and acoustic performance with easier on‑site handling. CodeMark‑certified AAC panels provide a clear NCC‑compliant solution, including suitability for BAL‑FZ bushfire construction.
Showing 3 products
Helix AAC
Advanced Thermal Concrete Systems for External Walls Helix AAC Panels are a next-generation external wall system that...
Bushfire-prone area construction
MaxiFloor Structural Flooring
Engineered flooring system for residential and commercial builds.
Multi-storey floor systems
MaxiWall AAC Panel System
Lightweight AAC wall panel system for fast internal and external walling.
Fast, cost-effective walling for residential and commercial
Why specify AAC?
Where is AAC used?
AAC wall panels are widely used across residential and commercial construction in Australia. In Class 1 residential housing, AAC is commonly specified in bushfire-prone areas and high BAL zones where non-combustible external wall systems are required.
For Class 2 multi-residential and mixed-use buildings, AAC is a practical party wall solution, delivering the fire separation and acoustic performance required under the NCC without the weight and complexity of traditional masonry. Commercial and industrial projects also specify AAC panels for external walls where speed of construction, fire compliance, and thermal performance are priorities.
AAC vs Other Materials
AAC’s primary advantage over fibre cement and timber cladding is its non-combustibility – it is the only material in Big River’s cladding range that is compliant to BAL-FZ, making it suited to high bushfire risk sites and multi-storey construction. It also delivers greater acoustic performance and can form a complete structural wall system, not just an external cladding layer. Fibre cement offers a thinner profile and a wider range of surface finishes, making it more flexible aesthetically for standard residential work.
Timber delivers a premium natural aesthetic but requires ongoing maintenance and has limited BAL compliance beyond BAL-19 without specific system configurations. For high fire risk and multi-storey projects, AAC is the technically superior specification.
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