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Appraisal number: 658 (2020)

Date issued: 27 May 2020

Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System

Description

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System is a cavity-based timber weatherboard external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.

The system consists of horizontally fixed Hermpac Rusticated, Splaycut and Multi-Splay timber weatherboards, cavity battens, flashings and accessories and is finished with a premium penetrating oil, stain or exterior paint system to Hermpac specifications.

The system 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 minimum 18 mm drained cavity.

Scope

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System incorporating oil or stain-finished cedar and DuraLarch weatherboards and paint-finished DuraLarch and AshinDura weatherboards has been appraised as an external wall cladding system for buildings within the following scope:

  • The scope limitations of NZBC Acceptable System E2/AS1 paragraph 1.1.
  • Constructed with timber framing complying with the NZBC.
  • With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
  • Situated in NZS 3604 wind zones up to and including extra high.

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System incorporating oil or stain-finished weatherboards 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 paragraph 1.1 with regards to building height and floor plan area.
  • Constructed with timber framing subject to specific engineering design.
  • Situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System incorporating paint-finished cedar weatherboards has been appraised as an external wall cladding system for buildings within the following scope:

  • The scope limitations of NZBC Acceptable System E2/AS1 paragraph 1.1.
  • Constructed with timber framing complying with the NZBC.
  • With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
  • Situated in NZS 3604 wind zones up to and including medium when studs are at maximum 600 mm centres and NZS 3604 wind zones up to and including very high when studs are at maximum 400 mm centres.

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

The Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System is appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills. (The Appraisal of the Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System relies on the joinery meeting the requirements of NZS 4211 for the relevant wind zone or wind pressure.)

Technical literature

Hermpac Rusticated, Splaycut and Multi-Splay Weatherboard Cavity System Installation Specification, June 2017

Architectural details, all dated 16/10/2017:

  • HC RUST 002 Isometric Views
  • HC RUST 100 Rusticated Weatherboard System Profiles
  • HC RUST 101 Trim and Moulding Profiles
  • HC RUST 200 Window Head Detail, Aluminium Joinery
  • HC RUST 201 Window Sill Detail, Aluminium Joinery
  • HC RUST 202 Window Jamb Detail, Aluminium Joinery
  • HC RUST 202A Window Jamb Detail, Aluminium Joinery
  • HC RUST 202B Window Jamb Detail, Aluminium Joinery
  • HC RUST 210 Door Head Detail Aluminium Joinery
  • HC RUST 211 Door Sill Detail, Aluminium Joinery
  • HC RUST 212 Door Jamb Detail, Aluminium Joinery
  • HC RUST 212A Door Jamb Detail, Aluminium Joinery
  • HC RUST 212B Door Jamb Detail, Aluminium Joinery
  • HC RUST 300 Internal Corner HP41
  • HC RUST 302 Enclosed Deck Balustrade to Wall Junction
  • HC RUST 307 Internal Corner HP370
  • HC RUST 310 Internal Corner HP360
  • HC RUST 400 External Corner Boxed
  • HC RUST 401 External Corner HP 40
  • HC RUST 402 External Corner HP 42
  • HC RUST 403 External Corner HP202 & HP201
  • HC RUST 404 External Corner HP310
  • HC RUST 405 External Corner HP321
  • HC RUST 410 General Detail Cavity Fix, Stain Finish
  • HC RUST 411 General Detail Cavity Fix, Paint Finish
  • HC RUST 412 Drained Inter-Storey Joint
  • HC RUST 413 Scarf Join Stain Finish
  • HC RUST 500 Base Of Wall, Concrete
  • HC RUST 501 Base Of Wall, Timber
  • HC RUST 502 Cavity at Enclosed Deck
  • HC RUST 600 Roof/Wall Junction
  • HC RUST 601 Soffit Detail, Overhang
  • HC RUST 602 Eaves Detail, No Overhang
  • HC RUST 700 Parapet Detail
  • HC RUST 800 Meter Box Detail
  • HC RUST 801 Pipe Penetration Detail
  • HC RUST 802 Pipe Penetration Plan Detail
  • HC RWD 002 Isometric Views
  • HC RWD 100 Rusticated Weatherboard System Profiles
  • HC RWD 101 Trim and Moulding Profiles
  • HC RWD 200 Window Head Detail, Aluminium Joinery
  • HC RWD 201 Window Sill Detail, Aluminium Joinery
  • HC RWD 201A Window Sill Detail, Aluminium Joinery
  • HC RWD 202 Window Jamb Detail, Aluminium Joinery
  • HC RWD 202A Window Jamb Detail, Aluminium Joinery
  • HC RWD 210 Door Head Detail, Aluminium Joinery
  • HC RWD 211 Door Sill Detail, Aluminium Joinery
  • HC RWD 212 Door Jamb Detail, Aluminium Joinery
  • HC RWD 212A Door Jamb Detail, Aluminium Joinery
  • HC RWD 300 Internal Corner CP2828
  • HC RWD 302 Enclosed Deck Balustrade to Wall Junction
  • HC RWD 402 External Corner CP2327
  • HC RWD 410 General Detail Cavity Fix, Stain Finish
  • HC RWD 413 Scarf Joint Stain Finish
  • HC RWD 500 Base of Wall, Concrete
  • HC RWD 501 Base of Wall, Timber
  • HC RWD 502 Cavity at Enclosed Deck
  • HC RWD 600 Roof/Wall Junction
  • HC RWD 601 Soffit Detail, Overhang
  • HC RWD 601A Soffit Detail, Overhang
  • HC RWD 602 Eaves Detail, No Overhang
  • HC RWD 602A Eaves Detail, No Overhang
  • HC RWD 700 Parapet Detail
  • HC RWD 800 Meter Box Detail
  • HC RWD 801 Pipe Penetration Detail
  • HC RWD 802 Pipe Penetration Plan Detail
  • HC SPLAY 100 Splaycut Weatherboard System Profiles
  • HC SPLAY 101 Splaycut Trim and Moulding Profiles
  • HC SPLAY 200 Window Head Detail, Aluminium Joinery
  • HC SPLAY 201 Window Sill Detail, Aluminium Joinery
  • HC SPLAY 202 Window Jamb Detail, Aluminium Joinery
  • HC SPLAY 210 Door Head Detail Aluminium Joinery
  • HC SPLAY 211 Door Sill Detail, Aluminium Joinery
  • HC SPLAY 212 Door Jamb Detail, Aluminium Joinery
  • HC SPLAY 300 Internal Corner HP110
  • HC SPLAY 301 Internal Corner Scribed
  • HC SPLAY 302 Internal Corner Boxed
  • HC SPLAY 303 Enclosed Deck Balustrade to Wall Junction
  • HC SPLAY 400 External Corner Boxed
  • HC SPLAY 401 External Corner Soaker
  • HC SPLAY 410 General Detail Cavity Fix, Stain Finish
  • HC SPLAY 411 General Detail Cavity Fix, Paint Finish
  • HC SPLAY 411 General Detail Cavity Fix, Multi-Splay Paint Finish
  • HC SPLAY 412 Drained Inter-Storey Joint
  • HC SPLAY 413 Scarf Join, Stain Finish
  • HC SPLAY 500 Base OF Wall, Concrete
  • HC SPLAY 501 Base Of Wall, Timber
  • HC SPLAY 502 Cavity at Enclosed Deck
  • HC SPLAY 600 Roof/Wall Junction
  • HC SPLAY 601 Soffit Detail, Overhang
  • HC SPLAY 602 Eaves Detail, No Overhang
  • HC SPLAY 700 Parapet Detail
  • HC SPLAY 800 Meter Box Detail
  • HC SPLAY 801 Pipe Penetration Detail
  • HC SPLAY 802 Pipe Penetration Plan Detail

Consenting instructions

Always refer to the Appraisal in full and the technical literature.

Appraisal holder

Herman Pacific Ltd
Address:
Phone: 09 421 9840

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