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Logicwall Intertenancy Wall

Logicwall Intertenancy Wall is a fire and acoustic-rated and load-bearing wall designed for medium-density apartments, terraced housing, retirement villages, and more. Logicwall Intertenancy Wall consists of a steel stud frame with CSR fibre cement sheets bonded to each side of the studs, creating a wall panel that can be easily hand-installed onsite and core-filled with concrete. Depending on the fire, acoustic, and structural ratings you require, Logicwall Intertenancy Wall is available in thicknesses of 120mm, 150mm, 162mm, 200mm, and 262mm.

Key Features
  • Structure, fire, and acoustic ratings achieved in the one system with no need to strap and line the walls — this generally creates a thinner wall overall
  • Acoustic ratings up to STC 69
  • Fire ratings up to 240/240/240+
  • Load-bearing Intertenancy walls
  • Speed of construction — the panels are hand installed making it faster than conventional concrete construction methods
  • No site crane is required to install the panels
  • Shop-drawn system
  • Significant waste reduction
  • Reduction in strapping and lining and steel portals
  • Full supply and installation service supplied
  • Manufactured in New Zealand


Scope of Use

Logicwall Intertenancy Walls are designed for use in multi-residential buildings such as:

  • Apartments
  • Terraced housing
  • Retirement villages
  • Motels
  • Hotels
Limitations on Use
  • Logicwall is not a cladding system — requires acrylic render or rainscreen to comply with E2.
  • Thermal capabilities do not meet code so additional insulation will be required when the Logicwall is used as exterior walls.
Statement of Building Code Compliance

If designed and installed in accordance with AFS technical literature, Logicwall complies with the following provisions of the NZBC:

  • B1 Structure - B1.3.1, B1.3.2, B1.3.3 (b, c, f, i, j, m), B1.3.4
  • B2 Durability — B2.3.1 (a), B2.3.2 (a, b)
  • C3 Fire affecting areas beyond the fire source — C3.4 (a), C3.6
  • C6 Structural stability — C6.2
  • F2 Hazardous building materials — F2.3.1
  • G6 Airborne and impact sound — G6.3.1

B1 — Logicwall is an engineered system, with specifications provided by a certified structural engineer. Please refer to the Logicwall Design Guide for further information including design tables and limitations. There are also test reports available from University of Canterbury and Holmes Solutions outlining Logicwall's compliance with B1.

B2 — Once constructed, Logicwall does not contribute to the structural capacity of the wall which acts as a normal concrete structure. When used and constructed in accordance with the design guide instructions, the Logicwall system complies with B2.

C3 — Once core filled with concrete, Logicwall achieves a fire rating of at least 240/240/180.

C6 — Once core filled with concrete, Logicwall achieves a fire rating of at least 240/240/180.

F2 – Raw materials used in Logicwall are galvanized steel stud, Cemintel fibre cement board and Bostik structural glue. All materials are inert substances.

G6 — Only the 162mm thick panels and above meet or exceed STC 55 acoustic ratings for intertenancy walls. Additional strapping and lining can be used to increase the acoustic ratings on all wall thicknesses.

In-Service History

AFS New Zealand has been manufacturing and installing Logicwall on numerous projects nationwide since 2007. The Logicwall system is owned by CSR in Australia, where they have been manufacturing Logicwall for over 30 years.

AFS New Zealand manufactures Logicwall in Nelson, with offices in Nelson, Auckland, Wellington and Christchurch.

There have been numerous projects throughout the country that have utilised Logicwall as their Intertenancy Walls. Some of these projects include:

  • Rose Garden Apartments in Albany, Auckland — Built in 2018, Logicwall Intertenancy Walls were installed on these apartments as also part of the load-bearing structure. This project had 200 apartments over 7 levels and by using Logicwall, the builder was able to speed up the construction programme for this large development.
  • Kainga Ora, 25 Banff Ave in Epsom, Auckland — Consisting of 25 units, on a small residential street, Logicwall Intertenancy Walls were able to provide the builder with a solution that reduced disruption to nearby residents and road users. Logicwall intertenancy walls created the vertical structure while also giving the client a durable and low-maintenance system.
  • Summerset Regional Buildings — Logicwall Intertenancy Walls have been installed on over 20 projects of Summerset's Retirement Villages. Logicwall is used as the primary vertical structure for their 3-story buildings, providing Summerset with a cost-effective solution for their Regional Main Builds.
Other Performance Attributes

Logicwall Intertenancy Walls have been tested by Holmes Solutions to reduce the amount of reinforcing required in the panels. Download the design pathway for structural engineers.

  • Acoustic ratings up to STC 69
  • Fire ratings up to 240/240/240+
B1 Structure compliant
B2 Durability compliant
F2 Hazardous Building Materials compliant
Hazardous Building Materials
G6 Airborne and Impact Sound compliant
Airborne and Impact Sound
Design Flow Chart: B1 & B2 Compliance Pathway

May 2024

Logicwall Design Guide

November 2019

Masterspec Work Sections
Certification incl. Acoustic and Fire Testing

November 2019

Installation Guide

November 2019

Logicwall System Overview


CAD/PDF Details
Logicwall Standard Details

AFS NZ manufacture and install permanent formwork systems for the multi-residential market throughout New Zealand.

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