Alteria Pattern

Non-combustibility and fire properties for Aluminium Battens and Aluminium Claddings

what are the fire properties for the alteria aluminium range?

Architects and designers have an important job to ensure they are conforming with all the fire regulations included in the BCA. When selecting building materials it is vital to ensure that the product you select meets the fire performance requirements. As manufacturers, Alteria Aluminium is committed to ensuring our products are suitable to use in both internal and external applications. To help clarify, we have outlined the key fire performance requirements for internal lining and external wall linings and how our products adhere to these.

Fire Performance Requirements for External walls and cladding

Since the significant façade cladding fire disasters in recent times around the world, there has been strict guidelines introduced in the Australian NCC to ensure the effective fire performance of external walls and claddings is implemented to minimise the spread of fire in a building and between buildings.

This requirement can be met, in part, under a Deemed-to-Satisfy Solution for buildings of Type A and Type B construction by non-combustible external walls (C1.9).

The BCA States:

In accordance with Deemed-to-Satisfy Provisions C2D10(6)(e) of the 2022 NCC, Building Code of Australia Volume One. (Previously known as C1.9(e)(v) of the 2019 NCC) BCA Section C, Part C2, D10 (6)(e) states:

The following materials may be used wherever a non- combustible material is required:

(e) Pre-finished metal sheeting having a combustible surface finish not exceeding 1 mm thickness and where the Spread-of-Flame Index of the product is not greater than 0.

Alteria has undertaken the appropriate non-combustibility fire tests to confirm it applies and has achieved the following results:

Fire Indices Test Name:

Methods for fire tests on building materials, components and structures, Part 3: Simultaneous determination of ignitability, flame propagation, heat release and smoke release


Spread of Flame Index: 0

Heat Evolved Index: 0

Smoke Developed Index: 2

Non-Combustibility Test Name:

Methods for fire tests on building materials, components and structures, Part 1: Combustibility test for materials


Deemed Not Combustible as specified by clause 3.4.

Fire Performance Requirements for Internal Linings

Standards Australia introduced into the BCA ‘AS5637.1 : 2015 – Determination of fire hazard properties – Wall and ceiling linings’ to help determine accurate group numbers.

These Group Ratings were introduced to help specifiers identify which lining products are suitable to use in various internal applications, particularly for multi-layered products. When undertaking a Group Number Test AS5637.1, Group 1 is the highest rating available, but different Group numbers can be used in different building types and/or locations. The BCA outlines what class level is required in each application and building type in Table 1, Specification c.1.10.

As Alteria is rated non-combustible, it is suitable to use in any application, including group 1 rated areas. Alteria has also undertaken group rating fire tests to confirm it applies and has achieved the following results:

Group Rating Test Name:

Wall & Ceiling Fire Hazard Properties


Group 1 Rating

In conclusion, Alteria Aluminium Battens & Claddings are suitable to use in both external cladding and internal lining applications.

For more information or advice of fire rating for Alteria Aluminium Battens and Claddings, or for a copy the certifications, then please contact us.

For any other sustainability questions or product enquiries, please contact us.

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