Hermpac Horizontal Bevelback & Rebated Bevelback Weatherboard Cladding System

Product Class

Product Description

The Bevel Back style of weatherboard is proving to be one of Hermpac's most popular and enduring timber cladding styles on offer.

Hermpac Bevel Back and Rebated Bevel Back weatherboard cladding is a horizontal cladding system that can be either direct fixed or fixed over a drained cavity.

Manufactured in NZ from Canadian Coastal Western Red Cedar, Alaskan Yellow Cedar, DuraLarch or Kanda.

Weatherboards available in various widths and thicknesses incorporating the standard 32mm lap detail (for bevelback) or 27mm lap detail (for rebated bevelback). Hermpac bevelback weatherboard profiles can be supplied with either a band sawn face (BSF) or dressed face (DF), and are available in a large range of both standard and custom profiles available for oil, stain or paint finish.

There is a range of soakers, corner battens and mouldings, fascias, flashings, and fixings that accompany the Hermpac bevelback and rebated bevelback weatherboard system.

Scope of use

The Hermpac cavity based Bevelback Weatherboard System has been appraised as an external, horizontally fixed wall cladding system within the following scope:

• the scope limitations of NZBC Acceptable System 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.

For weathertightness and structural wind loading 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.

Refer Codemark Certificate GM-CM30038 

Direct fix option also available - for risk score 0-12).

The Bevelback and Rebated Bevelback cladding system, combined with specialty Western Red Cedar cavity battens (where required) can be fire-treated to achieve a Type A/Type B non-combustible cladding. 

New Zealand Building Code (NZBC)

The product will, if employed in accordance with the supplier's installation and maintenance requirements, assist with meeting the following provisions of the building code:

• Clause B1 Structure: Performance B1.3.1, B1.3.2, B1.3.3, B1.3.3(a), B1.3.3(h), B1.3.3(j), B1.3.3(q)

  Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System meets Clause B1 Structure: B1.3.1, B1.3.2, B1.3.4 and B1.3.3 (a), (h), (j) and (q).

• Clause B2 Durability: Performance B2.3.1(b), B2.3.2(a), B2.3.2(b)

  Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System meets Clause B2 Durability: B2.3.1 (b) 15 years and B2.3.2.

• Clause E2 External moisture: Performance E2.3.2

  Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System meets Clause E2 External Moisture: E2.3.2

• Clause F2 Hazardous building materials: Performance F2.3.1

  Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System meets Clause F2 Hazardous Building Materials: F2.3.1

Notes

Refer relevant Hermpac Product Technical Statement.

Evidence

The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:

The Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System was tested in accordance with, and meets the requirements of E2/VM1.

The Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System can be a direct fixed cladding (0-12 risk score) or over cavity (0-20 risk score). Cavity options include 18/20mm, or 40/45mm.

The Bevelback and Rebated Bevelback cladding system, combined with specialty V8/V9 Western Red Cedar Vertibat Cavity battens (where required) can be fire-treated to achieve a Type A/Type B non-combustible cladding. 

Refer Product Technical Statement for scope information.

Supporting evidence

The product has and can make available the following additional evidence to support the above statements:

	CodeMark 30038

Use in Service History

Bevelback weatherboards have been used as a cladding in New Zealand for over a century.

Product Criteria

Design requirements

The Hermpac Bevelback  and Rebated Bevelback Weatherboard Cavity System is designed to be used as an external cladding, fixed horizontally on flat surfaces.

The profiles are manufactured in accordance with NZS 3617 and BRANZ Bulletin 411. There is a range of  standard and custom profile designs, with a focus on innovation and product development. Refer to www.hermpac.co.nz  for latest profiles.

Refer Product Technical Statement for Scope of Use.

Installation requirements

The system must be installed in accordance with the Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System Installation Specification, BRANZ Appraisal 658 (2020), Codemark Certificate GM-CM30038 and the Hermpac Bevelback and Rebated Bevelback construction drawing details (ref: HC-BEVEL).  

For direct fix refer Hermpac Bevelback and Rebated Bevelback Installation Specification Direct Fix and Hermpac Construction Drawings Direct Fix.

Please refer to www.hermpac.co.nz for this technical literature or email technical@hermpac.co.nz.

Maintenance requirements

Maintenance of the Hermpac Bevelback and Rebated Bevelback Weatherboard Cavity System is the building owner's responsibility.

Annual inspections must be made to ensure that all aspects of the cladding system, including flashings, remain in a weatherproof condition.  Any damaged areas or areas showing signs of deterioration which would allow water ingress, must be repaired immediately.  Sealant, coatings, flashings or the weatherboards must be repaired in accordance with the relevant manufacturer's instructions.

Maintenance requirements will depend on the coating type that is applied.  Please refer to the coating manufacturer's specification.  Specific maintenance schedules for re-coating oil stains are issued on a project specific basis.

Regular cleaning (at least annually) of the surface finish with water and a mild detergent is recommended to remove grim, dirt and organic growth, to maximise the life and appearance of the cladding.

Warrantees

Project/site specific warrantees available on request.

Company Product Information

Environmental

Hermpac timbers are available via a number of independent third party sustainability certification schemes including FSC, PEFC, SDI, and CSA.

Hermpac timbers meet the requirement for clause F2 Hazardous building materials F2.3.1 and does not present a health hazard to people.

Hermpac holds the Declare label for Western Red Cedar, Yellow Cedar and Kanda.

No treatments or chemicals.

Relationships

	New Zealand Made
	FSC SGS-COC-008082
	PEFC SGS-PEFC/COC-1212

Building Product Information Requirements

Manufacturer

Product Identifier

CLASS 2

Warnings

This product has no warnings associated with it.