Description

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System is an external horizontally fixed wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System consists of horizontally fixed rusticated, splaycut and mutlisplay weatherboards, cavity battens, flashings and accessories.

Scope

1. The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System is certified for buildings:

• a. not greater than 10 metre height, and
• b. situated:
  • i. in all exposure zones (excluding microclimates) as defined in NZS3604:2011, Paragraph 4.2.4 NZS3604:2011, and
  • ii. more than 1m from a relevant boundary, and
• c. constructed with timber framing within the scope of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5/11/2020) Paragraph 1.1, and with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5/11/2020) Table 2, situated in Wind Zones (as defined in NZS 3604:2011) as follows:
  • i. up to and including Extra High, for oil or stain finished Western Red Cedar, Yellow Cedar or Kanda, or with paint finished AshinDura, and
  • ii. up to and including Medium (provided studs are at maximum 600mm centres), and if fixed with jolt head nails up to and including Very High (provided studs are at maximum 400mm centres) for paint finished Western Red Cedar, Yellow Cedar or Kanda, and
• d. constructed with timber framing subject to specific engineering design up to a maximum design differential ultimate limit state (ULS) wind pressure of 2.5 kPa and within the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5/11/2020) Paragraph 1.1 with regards to building height and floor plan area, and with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5/11/2020) Table 2, for oil or stain finished Western Red Cedar, Yellow Cedar or Kanda.

2. The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System shall be designed, used, installed and maintained in accordance with:

• a. the Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System Installation Specifications, May 2023 V3 including:
  • i. the Hermpac standard construction drawings applicable (refer sections 9 & 11 of this certificate), and
  • ii. the fixing & finish requirements applicable to the oil/stain or paint system used.

3. The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System shall be only installed horizontally on vertical, flat surfaces.

4. Only aluminium window and door joinery meeting the requirements of NZS 4211:2008 (including Amendment1) for the relevant Wind Zone or wind pressure and installed with vertical jambs and horizontal heads and sills shall be used with The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System.

5. The designer shall provide a signed Declaration for submission with the building consent application that the use of this product in the proposed building work falls within the scope of this certificate and that all design conditions of this certificate have been met.

6. The installer shall supply a signed Product installation Checklist Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System (January 2023 V2) for consideration for issuing a Code Compliance Certificate (CCC).