Hardie Smart Fire and Acoustic Between Tenancies: The Complete Guide

This fire and acoustic solution is one of four systems within the HardieSmart range. Understanding how it relates to the other Building Solutions in the family helps builders and architects select the right assembly for each project.

The Intertenancy Wall System is the broader category covering separating walls between tenancies in Class 1 timber framed buildings — this fire and acoustic system sits within that category as the solution specifically targeting dual fire and acoustic compliance. The ZeroLot wall system — also known as the AcousticWall ZeroLot or Acoustic Wall – ZeroLot — is designed for External Walls in close proximity to property boundaries rather than internal separating walls. The Hardie™ Smart ZeroLot™ Wall System is ideal for tight spaces and boundary conditions where the minimum offset from a neighbouring structure is a key constraint — a common challenge in the latest trends in high-density urban construction.

The Hardie™ Blade Wall System serves a similar boundary purpose but is optimised for slimmer wall profiles where dimensional restrictions are critical. The Aged Care Wall System is specifically engineered for Class 9c buildings where both fire separation and acoustic comfort between rooms are heightened requirements.

The acoustic rated boundary wall solution and dual boundary wall solution within the HardieSmart range are designed for boundary conditions rather than part of the system used between tenancies — making the fire and acoustic between tenancies system the right specification for internal separating wall applications in townhouses and terrace projects.