Description

The A-lign Vertical® Shiplap Weatherboard Cavity Solution is a cavity-based shiplap weatherboard external wall cladding solution for residential and light commercial type buildings where domestic construction techniques are used.

The solution consists of vertically fixed Claymark Group Ltd Partnership shiplap timber weatherboards, ventilated cavity battens, flashings and accessories and is finished with a minimum of two coats of 100% premium acrylic house paint.

The solution 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 frame with a nominal 20 mm minimum drained cavity.

Scope

1. The A-lign Vertical® Shiplap Weatherboard Cavity Solution has been appraised as an external vertically-fixed wall cladding solution for buildings within the following scope:

• constructed with timber framing in accordance with the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
• constructed with steel framing subject to specific engineering design with building height and floor plan area scope limitations in accordance with NASH Building Envelope Solutions; and,
• with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2 or NASH Building Envelope Solutions; and,
• situated in NZS 3604 or NASH Standard Part 2 Wind Zones up to, and including, Extra High.

2. The A-lign Vertical® Shiplap Weatherboard Cavity Solution has also been appraised as an external vertically fixed wall cladding solution for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and floor plan area; and,
• constructed with timber and steel 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 A-lign Vertical® Shiplap Weatherboard Cavity Solution must only be installed vertically on vertical, flat surfaces.

4. The A-lign Vertical® Shiplap Weatherboard Cavity Solution has been appraised for use with aluminium and timber window and door joinery that is installed with vertical jambs and horizontal heads and sills.

NOTE: The Appraisal of A-lign Vertical® Shiplap Weatherboard Cavity Solution relies on the joinery meeting the requirements of NZS 4211 for the relevant Wind Zone or wind pressure and the timber joinery profiles meeting the requirements of NZS 3610.