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Masons Intertenancy Wall System
Description

The Masons Intertenancy Wall System is a simple and flexible acoustic and fire-rated wall system based on tried-and-true materials for faster construction. 

The system is based on Masons Enviro AAC (autoclaved aerated concrete) panels – a dense yet lightweight material with proven acoustic and fire-stopping performance. The system is easy to work with, giving builders workflow flexibility and construction efficiencies. It is fully NZBC compliant for both fire resistance (FRR) and sound transmission (STC).

The Masons Intertenancy Wall System is based on Masons Enviro™ AAC panel – a 50 mm thick panel tested to, and compliant with AS/NZS1530.1. It is manufactured from cement, sand, lime and water which is aerated with an expanding agent. Soft blocks are molded from the mixture and then sliced into the required panel size and cured in a steam pressure autoclave for up to 12 hours.

Key Features

The system comprises:

  • 10mm thick plasterboard
  • 90mm deep timber framing or 92 mm deep steel framing
  • 75mm R2.0, non-combustible, moisture-resistant, non-corrosive, mildew-proof mineral wool insulation
  • 20mm minimum air gap
  • 50mm Masons Enviro™ AAC panel
  • 20mm minimum air gap
  • 75mm R2.0, non-combustible, moisture-resistant, non-corrosive, mildew-proof mineral wool insulation
  • 90mm deep timber framing or 92mm deep steel framing
  • 10mm thick plasterboard
  • non-combustible, moisture-resistant, mineral wool insulation for the top of the wall

 

Scope of Use

For scope of use, limitations, conditions and statement of building code compliance, refer to the Masons Intertenancy Wall System PASS™

Limitations on Use

For scope of use, limitations, conditions and statement of building code compliance, refer to the Masons Intertenancy Wall System pass™

Statement of Building Code Compliance

For scope of use, limitations, conditions and statement of building code compliance, refer to the Masons Intertenancy Wall System PASS™.

https://mpb.co.nz/wp-content/uploads/2022/05/Masons_Intertenancy_Wall_System_PASS_v2_1_exp_11-2022_LO.pdf

 

Other Performance Attributes

EXCEEDS CODE - Fully FRR & STC compliant

This system meets and/or exceeds the New Zealand Building Code’s minimum requirements for both fire rating and sound transmission class. It has been reviewed against the NZBC for fire performance by IGNIS, one of Australasia’s foremost fire engineers, and scored a rating of 90/90/90 on walls up to 10 m high. Acoustic engineers Marshall Day reported a lab performance of 64 dB – higher than the minimum STC requirement of 55 dB for intertenancy walls.

 

SIMPLE - Easy to use, flexible and fast

The Masons system is construction friendly and designed for simplicity and flexibility. As few as two builders can install the system, and installation can be flowed around other work on-site. No weather protection is needed for the AAC panels when work stops, making on-site storage simple.

 

FAST - Designed for buildability

The system can be installed up to three stories continuously, without interruption, and there is often no need for extra accessories or fiddly work at mid-floors junctions. Services can be run down the framing on either side of the AAC panels, and materials are carried in smaller parts when site access is difficult. The ACC system is easier for everyone on the job. 

* Penetrations to the Masons Intertenancy Wall System: fire and acoustic must be engineered for fire rating and to preserve acoustic performance and installed by suitably qualified persons. 

Documents
Design Guide

v1

PASS Product Assurance Statement

19164 v2

Maintenance and Warranty
Specification Guide

v1

Installation Guide

v1

Installation Record
CAD/PDF Details
Masons IT Wall Drawings

Since being established in 1999, Masons has become a key supplier in the New Zealand building industry, offering a variety of quality products and tools for a whole range of building requirements.

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