Akera Horizontal Shiplap Weatherboard Cladding
- Abbreviation
- Appraisal number 1314 (2026)
- Valid from
- 17/08/2026
- Information provider
- BRANZ Limited,
- Information type
- BRANZ Appraisal,
- Format
- PDF,
Description
Akera Horizontal Shiplap Weatherboard Cladding is a cavity-based, shiplap-jointed, fibre cement wall cladding 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.
Akera Horizontal Shiplap Weatherboard Cladding consists of Akera fibre cement weatherboards fixed over timber battens to form a cavity. The cladding is finished with a latex paint system.
Scope
Timber Framing
1. Akera Horizontal Shiplap Weatherboard Cladding has been appraised as an external wall cladding system for timber-framed buildings within the following scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1; and,
- with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1; and,
- situated in NZS 3604 Wind Zones up to, and including, Extra High.
Steel Framing
2. Akera Horizontal Shiplap Weatherboard Cladding has also been appraised as an external wall cladding for steel-framed buildings within the following scope:
- the scope limitations of NASH Building Envelope Solutions for steel-framed buildings; and,
- with a risk score of 0-20, calculated in accordance with NASH Building Envelope Solutions; and,
- situated in NASH Standard Part Two Wind Zones up to, and including, Extra High.
Specific Design
3. Akera Horizontal Shiplap Weatherboard Cladding has also been appraised for weathertightness and structural wind loading when used as an external wall cladding system for timber-framed buildings within the following scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1 with regard to building height and floor plan area; or,
- 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.
General
4. Akera Horizontal Shiplap Weatherboard Cladding must only be installed horizontally on vertical, flat surfaces.
5. Akera Horizontal Shiplap Weatherboard Cladding must only be used with window and doors that comply with NZBC Acceptable Solution E2/AS1 or that are covered by a valid BRANZ Appraisal or NZ CodeMark Certification.
