Description

Enviro™ 50 mm AAC Intertenancy Wall System consists of a central single layer of Enviro™ 50 mm AAC panel fixed between single stud timber or steel framing walls on each on side of the AAC panel, with a minimum gap of 20 mm between the framing and the AAC panel, 75 mm insulation in each wall cavity and lined with 10 mm minimum thickness plasterboard.

Scope

1. The Enviro™ 50 mm AAC Intertenancy Wall System is certified for use in buildings:

• a) designed
  • i. timber framed in accordance with NZS3604, or
  • ii. light steel framed in accordance with NASH Standard Part 2, or
  • iii. specifically engineering designed in accordance with B1/VM1, and
• b) with risk groups SH, SM, SI, CA, WB, and VP (as defined in Acceptable Solutions C/AS1 and C/AS2) where the building is sprinklered or un-sprinklered (except risk group WB for un-sprinklered steel framed buildings), and
• c) up to and including three storeys high and 10 m maximum height, and
• d) located
  • i. in any seismic zone (as specified in NZS3604:2011), and soil classification types listed in AS/NZS1170, and
  • ii. in any exposure zone (excluding microclimates) (as specified in NZS3604).

2. The Enviro™ 50 mm AAC Intertenancy Wall System shall:

• a) be installed in accordance with the Enviro™ 50 mm AAC Intertenancy Wall System Installation Guide V5.2 July 2025, and
• b) be lined with minimum 10 mm plasterboard, and
• c) incorporate R2 minimum cavity insulation of at least 9 kg/m3 density and at least 75 mm thick, and
• d) not impose any structural load on the AAC centre panels other than the weight of other AAC panels stacked above them, and
• e) not have any penetrations.

3. This Certification does not cover:

• a) the building adjacent to the intertenancy walls, which shall be designed as stand-alone separate buildings with respect to the imposed structural actions for each building, or
• b) compliance of the framed walls with respect to structural actions, except for seismic loads imposed by the AAC central panel, or
• c) other components as part of the system not manufactured by Masons which shall be installed in accordance with the manufacturers standard and specifications.