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Appraisal number: 1064 (2019)

Date issued: 7 Nov 2019

Integra Lightweight Concrete Intertenancy System

Description

The Integra Lightweight Concrete Intertenancy System is a sound insulating and fire-rated wall system.  The Integra Lightweight Concrete Intertenancy System achieves a fire resistance rating (FRR) of 120/120/120 and a sound transmission class (STC) of up to 67.

The Integra Lightweight Concrete Intertenancy System is a proprietary intertenancy wall system that provides horizontal fire and acoustic separation between adjacent occupancies within the same building.  The core component of the system is Integra - a high-tech lightweight aerated autoclaved concrete (AAC) panel that is installed between traditional wall framing that has insulation and plasterboard lining on the outer faces. 

Scope

The Integra Lightweight Concrete Intertenancy System is appraised for use as fire-rated and sound insulating internal walls between household units within the following scope:

  • Where constructed with timber framing within the scope of NZS 3604, light steel framing in accordance with NASH Standard Part 2: Light Steel-Framed Buildings or timber or steel framing to a specific engineering design. 
  • To a maximum building height of 10.0 m when designed in accordance with NZS 3604.
  • With a maximum intertenancy wall height of 12.0 m when subject to a specific engineering design.

Technical literature

  • Integra Lightweight Concrete Intertenancy System Technical Manual, version 2, November 2019
  • Integra Lightweight Concrete Intertenancy System Timber Framing (all drawings dated 1 December 2018)
  • Integra Lightweight Concrete Intertenancy System Steel Framing (all drawings dated 13 September 2019) 

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder

Rockcote Resene Ltd T/A Resene Construction Systems
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Phone: 03 338 6328
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