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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

Non-Combustible Fire Resistant CodeMark Certified

MaxiFloor Structural Flooring

Engineered flooring system for residential and commercial builds.

Multi-storey floor systems

Fire Rated Acoustic Rated Australian Made BAL-FZ Non-Combustible Fire Resistant

MaxiWall AAC Panel System

Lightweight AAC wall panel system for fast internal and external walling.

Fast, cost-effective walling for residential and commercial

Fire Resistant Termite Proof Australian Made Energy Efficient Non-Combustible Fire Rated
KEY BENEFITS

Why specify AAC?

Non-Combustible & Fire Resistant

Unlike fibre cement, which is fire resistant, AAC is classified as non-combustible under the NCC. This makes it a compliant solution for BAL-FZ bushfire sites, Class 2 and above multi-residential buildings, and any project where non-combustibility is a code requirement. CodeMark certification supports builders through the compliance documentation process.

Lightweight Construction

AAC panels weigh a fraction to traditional masonry, reducing structural loads on footings and framing systems. Lighter panels also mean faster handling and installation on site, helping improve productivity and reduce labour and crane time. This makes AAC panel systems - particularly advantageous to multi-storey residential and commercial projects.

Thermal & Acoustic Performance

The cellular structure of AAC provides inherent thermal resistance and sound attenuation, contributing to improved energy efficiency ratings and acoustic separation between spaces. This makes AAC wall systems a practical specification for party walls in multi-residential buildings and for external walls in climate zones where thermal performance is a priority.

Termite Proof & Low Maintenance

AAC contains no organic material, making them completely resistant to termite attack with no ongoing treatment required. Once installed, AAC wall systems are durable and long-life and low maintenance - an important consideration for developers and building owners managing whole-of-life costs.

APPLICATIONS

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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