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Appraisal number: 897 (2015)

Date issued: 20 Nov 2015

Linea® Oblique Weatherboard (Vertical) Cavity Cladding

Description

Linea® Oblique Weatherboard (Vertical) Cavity Cladding is a cavity-based fibre-cement weatherboard wall cladding. It is designed to be used as an external cladding system for residential and light commercial type buildings where domestic construction techniques are used.

Linea® Oblique Weatherboard (Vertical) Cavity Cladding consists of Linea® Oblique Weatherboard, which is a rusticated profile fibre-cement weatherboard fixed vertically over ventilated timber battens to form the cavity. The cladding is finished with a latex paint system.

The cladding 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. The cavity allows for any occasional ingress of water that may get past the external skin to drain to the exterior of the building and any remaining moisture to dry by evaporation.

Scope

Linea® Oblique Weatherboard (Vertical) Cavity Cladding 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.

Linea® Oblique Weatherboard (Vertical) Cavity Cladding has also been appraised for weathertightness and structural wind loading when used as an external vertically fixed wall cladding 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 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.

Linea® Oblique Weatherboard must only be installed vertically on vertical surfaces.

Linea® Oblique Weatherboard (Vertical) Cavity Cladding is appraised for use with aluminium window and door joinery that is installed with vertical jambs and vertical heads and sills. (Note: The Appraisal of Linea® Oblique Weatherboard (Vertical) Cavity Cladding relies on the joinery meeting the requirements of NZS 4211 for the relevant wind zone or wind pressure.)

Linea®Oblique Weatherboard (Vertical) Cavity Cladding can be used to provide fire resistance rated construction, but this aspect has not been assessed by this Appraisal and is outside its scope.

Technical literature

Linea® Oblique Weatherboard Vertical Installation Technical Specification including installation details 1-29, November 2015

Consenting instructions

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

Appraisal holder

James Hardie New Zealand Ltd
Address:
Phone: 0800 808 868
Email:

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