Description

The Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System is a cavity-based external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The weatherboards are manufactured from Western Red Cedar. Selected Weatherboards are also manufactured from DuraLarch and AshinDura

Scope

1.  The Hermpac Bevelback & Rebated Bevelback Weatherboard Cavity System has been assessed as an external horizontally fixed wall cladding system for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 9 (27/06/2019), Paragraph 1.1; and,
• constructed with timber framing complying with the NZBC and,
• with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 9 (27/06/2019), Table 2; and,
• situated in NZS 3604:2011 Wind Zones up to, and including Extra High.

2.  The Hermpac Bevelback & Rebated Bevelback Weatherboard Cavity System has also been assessed for weathertightness and structural wind loading when used as an external horizontally fixed wall cladding system for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 9 (27/06/2019), Paragraph 1.1 with regards to building height and floor area; and,
• constructed with timber framing subject to specific engineering design; and,
• situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

3.  The Hermpac Bevelback & Rebated Bevelback Weatherboard Cavity System must only be installed horizontally on vertical, flat, surfaces.

4.  The Hermpac Bevelback & Rebated Bevelback Weatherboard Cavity System is assessed for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills.

The assessment of the Hermpac Bevelback & Rebated Bevelback Weatherboard Cavity System relies on the joinery meeting the requirements of NZS 4211:2008 including Amendment 1 for the relevant Wind Zone or wind pressure.