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Appraisal number: 870 (2019)

Date issued: 15 Oct 2019

Nu-Wall Aluminium Vertical Weatherboard Cavity System

Description

The Nu-Wall Aluminium Vertical Weatherboard Cavity System is a cavity-based interlocking powder-coated aluminium weatherboard system. It is designed to be used as an external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The system includes vertically fixed Nu-Wall weatherboards, cavity battens, internal and external corner mouldings, base channel, board jointers, board locators, soffit caps, joinery flashings and accessories.

The system incorporates a primary and secondary means of weather resistance (first and second line of defence) against water penetration by separating the cladding from the external wall framing with a nominal 20 mm cavity.

Scope

The Nu-Wall Aluminium Vertical Weatherboard Cavity System has been appraised as an external wall cladding for buildings within the following scope:

  • The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1.
  • With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
  • Situated in NZS 3604 wind zones up to and including extra high.

The Nu-Wall Aluminium Vertical Weatherboard Cavity System has also been appraised for weathertightness and structural wind loading when used as an external wall cladding system for buildings within the following scope:

  • The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1 with regards to building height and floor plan area.
  • Constructed with timber and steel framing subject to specific engineering design.
  • Situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

The Nu-Wall Aluminium Vertical Weatherboard Cavity System must only be installed vertically on vertical flat surfaces.

The Nu-Wall Aluminium Vertical Weatherboard Cavity System is appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills. (The Appraisal of the Nu-Wall Aluminium Vertical Weatherboard Cavity System relies on the joinery meeting the requirements of NZS 4211 for the relevant wind zone or design wind pressure.)

Technical literature

Nu-Wall Aluminium Cladding - Installation Reference - Vertical on Cavity, issue 1, August 2012

Installation details listed below for the following profiles:

  • Shiplap
  • Ripple 150, Ripple 190, Ripple 200
  • Aero 70, Aero 115, Aero 190, Aero 200
  • Ullos
  • Mono100, Mono190, Mono200
  • E100, E200, E70/130 

Details

  • NW-V002C Vertical Cladding over Drained & Vented Cavity Battening Options on Steel Frame, August 2014
  • NW-V002C Vertical Cladding over Drained & Vented Cavity Battening Options, August 2014
  • NW-V001C Vertical Cladding over Drained & Vented Cavity Batten Layout, August 2014
  • NW-V003C Vertical Cladding over Drained & Vented Cavity Base Channel & Fixing, August 2014
  • NW-V004C Vertical Cladding over Drained & Vented Cavity Starter; Timber Floor, August 2014
  • NW-V005C Vertical Cladding over Drained & Vented Cavity Starter; Waterproof Deck, August 2014
  • NW-S004 Base Channel Mitred Corner- to give improved aesthetic when visible from below
  • NW-V006C Vertical Cladding over Drained & Vented Cavity Base Channel/ Corner Isometric, August 2014
  • NW-V007C Vertical Cladding over Drained & Vented Cavity- External 90° Corner, August 2014
  • NW-V007C.2 Vertical Cladding over Drained & Cavity - 1 Piece External 90° Corner 35 x 70, August 2018
  • NW-V007C.3 Vertical Cladding over Drained & Vented Cavity - 1 piece External 90° Corner negative detail, October 2018
  • NW-V008C Vertical Cladding over Drained & Vented Cavity - Internal 90° Corner, August 2014
  • NW-V008C.2 Vertical Cladding over Drained & Vented Cavity - Internal 90° Corner Negative Detail, October 2018
  • NW-V009C Vertical Cladding over Drained & Vented Cavity - Horizontal Joint, August 2014
  • NW-V010C Vertical Cladding over Drained & Vented Cavity - Window sill with support bar August 2014
  • NW-V011C Vertical Cladding over Drained & Vented Cavity - Window Jamb August 2014
  • NW-V011C Vertical Cladding over Drained & Vented Cavity - Window Jamb August 2014
  • NW-V011C.2 Vertical Cladding over Drained & Vented Cavity - E series Detail Filler, August 2018
  • NW-V011C.3 Vertical Cladding over Drained & Vented Cavity - Window Jamb NC247, NC248, October 2018
  • NW-V012C- Vertical Cladding over Drained & Vented Cavity - Window head, August 2014
  • NW-V013C Vertical Cladding over Drained & Vented Cavity - Window head & Sill Soaker Details, August 2014
  • NW-V014C Vertical Cladding over Drained & Vented Cavity- Head flashing End Detail, August 2014
  • NW-V015C Vertical Cladding over Drained & Vented Cavity - Meter Box Sill Detail, August 2014
  • NW-V016C Vertical Cladding over Drained & Vented Cavity - Meter Box Jamb Detail, August 2014
  • NW-V017C Vertical Cladding over Drained & Vented Cavity - Meter Box Head Detail, August 2014
  • NW-V018C Vertical Cladding over Drained & Vented Cavity - Soffit Trim, August 2014
  • NW- V019C Vertical Cladding over Drained & Vented Cavity - Pipe penetration August 2014
  • NW-V020C Vertical Cladding over Drained & Vented Cavity - Roof/Wall Junction, August 2014
  • NW- V021C Vertical Cladding over Drained & Vented Cavity - Parapet Flashing, August 2014
  • NW-V022C Vertical Cladding over Drained & Vented Cavity - Deck Junction, August 2014
  • NW-V023C Vertical Cladding over Drained & Vented Cavity- Gutter/Wall junction, August 2014

Consenting instructions

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

Appraisal holder

Aluminium Product Brands NZ Ltd
Address:
Phone: 0800 689 255
Email:

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