Description

The Innova™ Duragroove™ and Durascape™ Façade Systems (Cavity) are cavity-based, shiplap-jointed wall cladding systems. They are designed to be used as an external wall cladding systems for residential and light commercial type buildings where domestic construction techniques are used.

The Innova™ Duragroove™ and Durascape™ Façade Systems (Cavity) consists of Innova™ Duragroove™ and Innova™ Durascape™ fibre cement sheets fixed with mechanical fasteners and adhesive sealant over timber battens to form a cavity. The fibre cement sheet is finished with a paint system.

Scope

1. Innova™ Duragroove™ and Durascape™ Facade Systems (Cavity) have been appraised as external wall cladding systems for buildings within the following scope:

• the scope limitations of NZBC Acceptable Solution E2/AS1, 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, Table 2; and,
• situated in NZS 3604 Wind Zones up to, and including Extra High.

2. Innova™ Duragroove™ and Durascape™ Facade Systems (Cavity) have also been appraised for weathertightness and structural wind loading when used as external wall cladding systems 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; and,
• constructed with timber framing complying with the NZBC; and,
• situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

3. Innova™ Duragroove™ and Durascape™ Facade Systems (Cavity) must only be installed on vertical surfaces (except for tops of sills and balustrades, which must have a minimum slope as defined by NZBC Clause E2/AS1 or NZBC Clause F4/AS1 and be waterproofed in accordance with the Technical Literature).

4. Innova™ Duragroove™ and Durascape™ Facade Systems (Cavity) are appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills. (Note: The Appraisal of the Innova™ Duragroove™ and Durascape™ Facade Systems (Cavity) relies on the joinery meeting the requirements of NZS 4211 for the relevant Wind Zone, or design wind pressures.)