Description

Akera Vertical 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 Vertical Shiplap Weatherboard Cladding consists of Akera fibre cement weatherboards fixed over castellated timber battens or vented battens to form a cavity. The cladding is finished with a latex paint system.

Scope

Timber Framing 

1. Akera Vertical Shiplap Weatherboard Cladding has been appraised for use as an external wall cladding for timber-framed buildings within the following scope: 

• the scope limitations of NZBC Acceptable Solution E2/AS1 for timber-framed buildings; and, 
• with a risk score of 0–20, calculated in accordance with NZBC Acceptable Solution E2/AS1; and, 
• situated in Wind Zones up to, and including, Extra High determined in accordance with NZS 3604. 

Steel Framing 
 
2. Akera Vertical Shiplap Weatherboard Cladding has been appraised for use as an external wall cladding for steel-framed buildings within the following scope: 

• the scope limitations of NZBC Acceptable Solution E2/AS4 and NASH Building Envelope Solutions; and, 
• with a risk score of 0-20, calculated in accordance with NASH Building Envelope Solutions; and, 
• situated in Wind Zones up to, and including, Extra High determined in accordance with NZS 3604. 

Specific Design 
 
3. Akera Vertical Shiplap Weatherboard Cladding 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 for timber-framed buildings; and, 
• constructed with 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 determined in accordance with AS/NZS 1170.2

Installation over 40 mm Structural Cavity Battens

4. Akera Vertical Shiplap Weatherboard Cladding installed over 40 mm structural cavity battens 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, Very High when battens are at maximum 600 mm centres, and NZS 3604 Wind Zone Extra High and specific design wind pressures up to a maximum design differential ULS of 2.5 kPa when battens are at maximum 480 mm centres.

5. Akera Vertical Shiplap Weatherboard Cladding must only be installed vertically on vertical, flat surfaces.

6. Akera Vertical 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.