Fire rating is becoming increasingly stringent so it is important to understand the code requirements. Below is a summary of the main types of fire requirements in the NCC / BCA.

FRL (Fire Resistance Level)

This fire rating refers to three aspects – Structural adequacy, Integrity and Insulation – measured in minutes and written as xx/xx/xx. So for example, a 60/90/120 FRL refers to a wall which is rated to 60 minutes structural adequacy, 90 minutes integrity, and 120 minutes insulation.

Find your FRL solution or download the guide here.


Non-combustible materials are materials are often required in facade and internal wall situations. All James Hardie® and Scyon building products are suitable where non-combustible materials are required in accordance with specification C1.12 of the Building Code of Australia. (Refer to Section C, C1, C1.12 (d) of the NCC / BCA). Other materials may need to be tested to AS1530.1 to ensure non-combustibility.

Material Group Number

James Hardie® building products have been tested by CSIRO in accordance with AS/NZS and have been classified to conform to Group 1 (highest and best result possible), with an average specific extinction area far lower than the permissible 250m2/kg, as referenced in specification C1.10 of the BCA.

Request a Fire Certificate.

BAL (Bushfire Attack Level)

Different parts of Australia have different BAL ratings, based on the bushfire attack level. These BAL ratings range from BAL-12.5 to BAL-FZ (Flame Zone).

User our interactive house tool to find out your wall requirements.

Acoustic Ratings

Acoustic ratings ensure the comfort and amenity of occupants and are especially important in multi-residential development. Below is a summary of the main types of acoustic requirements in the NCC/BCA.

  • Rw and Rw+Ctr: These are Weighted Sound Reduction Indices, and refers to the acoustic reduction of airborne noise travelling through a wall system. 1 increase in Rw roughly equates to 1dB reduction.
  • Lnw+Ci: This describes how easily impact noise travels through a floor.

Request a site-specific acoustic prediction online.


With an increasing focus on environmentally sustainable construction it is important to understand thermal values. The R-value refers to the thermal resistance of the wall system.

Our Fire, Acoustic And Thermal Rated Walls Application:

HardieSmart™ Aged Care Wall System

A simple and fast separating wall solution designed for aged care buildings between occupancies as well as com ...

HardieSmart™ Boundary Wall System

A compact boundary wall solution for new or existing townhouses, terraces and detached buildings in close prox ...

HardieSmart™ Intertenancy Wall System

A simple and fast common-wall solution for use in-between tenancies in town houses, terraces and multi-residen ...

HardieSmart™ ZEROLOT™ Wall System

A dual boundary wall solution between tenancies designed to provide fully detached construction in townhouses ...