Proprietary Cavity Battens Enable Installation of JSC Timber Weatherboards on Concrete, Masonry and Steel Framing

JSC's 45mm Structural Cavity Battens provide an engineered solution for attaching JSC's timber cladding to other substrates rather than just conventional timber frames.

Six scenarios for all applications

JSC’s Structural Cavity Battens have been designed for six distinct installation scenarios, covering both vertical and horizontal timber weatherboards for JSC's cladding systems — JSC VertiClad, JSC RustiClad, JSC BevelClad, and JSC Board & Batten. These are categorised based on:

Stud spacing (400mm or 600mm max.)
Nog requirements (with or without nogs, alternating or full support)
Wind load performance
Fixing span and fastener specifications

Each scenario ensures structural stability while maintaining compliance with E2/AS1 drainage and ventilation requirements. The fixing configuration depends on the project’s structural requirements, including wind zone classification, cladding type, and framing material.

Smart design for performance

The system features three batten options, each developed to support drainage, ventilation, and fixing needs:

JSC-V 45x45mm: Vertically-oriented castellations for optimised drainage
JSC-H 45x45mm: Horizontally-oriented castellations for cross-ventilation
JSC 70x45mm: Extra-width option for extended fixing surface

All battens are manufactured from H3.2 treated Radiata Pine, offering enhanced durability compared to H3.1 alternatives. The increased cavity depth delivers superior performance:

Greater ventilation volume compared to standard 20mm cavities
Enhanced drainage capacity through castellated channels
Angled edges directing water away from the building frame
The cavity battens provide structural fixing for the weatherboards, eliminating the need for additional nogging in key configurations. This simplifies installation while reducing material use and labour costs.
Fixing spans optimised to prevent wall underlay bulging while maintaining drainage efficiency.

Solving the substrate puzzle

JSC's system offers solutions for:

Concrete/masonry walls
Steel framing

To ensure compliance, the project's structural engineer must specify the appropriate fixings for these substrates, meeting the minimum tension requirements outlined in the JSC Structural Cavity Batten Fixing Guide.

Keeping water where it belongs — outside

Meets E2/AS1 requirements for drainage and ventilation
Castellations help break capillary action
Improved drying potential through enhanced air circulation

Navigating the compliance landscape

JSC offers comprehensive design support including:

Detailed CAD drawing package for standard junctions
Installation and Specification Guides
CodeMark certification — ensures a recognised and accepted compliance pathway
JSC Structural Cavity Batten Fixing Guide
Technical support from the JSC team

Let's talk about your project. For project-specific technical advice, and detailed specifications, contact JSC's technical team at 0800 57 26 88 or visit jsc.co.nz.

JSC Vertical Shiplap Timber Weatherboard Cladding

JSC

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JSC are recognised as leaders in timber cladding and cavity system development in New Zealand, offering an extensive range of carefully selected quality products, profiles, and colour coatings to suit a wide range of design needs.

NZ-Owned Business

JSC installation and specification guide and CodeMark certificate guidelines must be followed.

JSC VertiClad — Vertical Shiplap Weatherboard Cladding System – CodeMark Certificate: CM-GM30084

Location:

In wind zones up to and including extra high, as defined in NZS3604:2011 or situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS)of 2.5 kPa, where the building has been specifically engineered
In all exposure zones, excluding microclimates as defined in NZS3604:2011.

Building:

Has the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 9 (27/06/2019), Paragraph 1.1; and,
New timber framed buildings with building wrap or rigid air barrier that comply with the NZBC Acceptable Solution E2/AS1 Third Edition including amendment 9 (27/06/2019),
Existing timber framed buildings where the designer and installer have satisfied themselves that the existing building is suitable for the intended building work
With a risk score of 0-20 when calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 9 (27/06/2019), Table 2
The System must only be installed vertically on vertical, flat, surfaces
The System is certified for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills
The wall cladding system is located more than 1m from a relevant boundary.

Note: See CodeMark Certificate for full and up to date information. Please refer to installation instructions and maintenance guide available for download under Documents.

The JSC Weatherboard Systems if designed and installed as per the JSC VertiClad installation and specifications guide, will meet the following provisions of the New Zealand Building Code (NZBC):

Clause B1 Structure: Performance B1.3.1, B1.3.2, B1.3.4 (a), (b), (c), (d) and (e) for the relevant physical conditions of B1.3.3 (a), (e), (f), (h), (j), and (q)
Clause B2 Durability: Performance B2.3.1(b) and B2.3.2(b)
Clause E2 External Moisture: Performance E2.3.2, E2.3.3, E2.3.5, E2.3.7(b) and (c)
Clause F2 Hazardous Building Materials: Performance F2.3.1

JSC Western Red Cedar Weatherboard System, if installed and maintained as per manufacturer’s documentation, will meet the minimum 15-year durability requirement in respect of clauses B1 and B2 of the first schedule of the New Zealand Building Code for external cladding. In a typical installation, it is likely to have a serviceable life exceeding 30 years.

CodeMark

JSC Rusticated Timber Weatherboard Cladding

JSC

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NZ-Owned Business

JSC installation and specification guide and CodeMark certificate guidelines must be followed.

JSC RustiClad — Rusticated Horizontal Weatherboard Cladding System – CodeMark Certificate: CMNZ30081

Location

In wind zones up to and including extra high, as defined in NZS3604:2011 or situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa, where the building has been specifically engineered
In all exposure zones, excluding microclimates as defined in NZS3604:2011

Building

Has the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Paragraph 1.1; and,
New timber framed buildings with building wrap or rigid air barrier that comply with the NZBC Acceptable Solution E2/AS1 Third Edition including amendment 10 (5 November 2020),
Existing timber framed buildings where the designer and installer have satisfied themselves that the existing building is suitable for the intended building work
With a risk score of 0-20 when calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Table 2
The System must only be installed horizontally on vertical, flat, surfaces
The System is certified for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills
The wall cladding system is located more than 1m from a relevant boundary.

Note: See CodeMark Certificate for full and up to date information. Please refer to installation instructions and maintenance guide available for download under Documents.

The JSC Weatherboard Systems if designed and installed as per the JSC RustiClad installation and specifications guide, will meet the following provisions of the New Zealand Building Code (NZBC):

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2, B1.3.4 for the relevant physical conditions of B1.3.3 (a), (h), (j) and (q).
Clause B2 DURABILITY: Performance B2.3.1(b) and B2.3.2(b).
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2, E2.3.5, E2.3.7.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1.

CodeMark

JSC Board & Batten Timber Weatherboard Cladding

JSC

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NZ-Owned Business

JSC installation and specification guide and CodeMark certificate guidelines must be followed.

JSC Board and Batten — Board & Batten Weatherboard Cladding System – CodeMark Certificate: CMNZ30083

Location:

In wind zones up to and including extra high, as defined in NZS3604:2011 or situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa, where the building has been specifically engineered
In all exposure zones, excluding microclimates as defined in NZS3604:2011.

Building:

Has the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Paragraph 1.1; and,
New timber framed buildings with building wrap or rigid air barrier that comply with the NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020)
Existing timber framed buildings where the designer and installer have satisfied themselves that the existing building is suitable for the intended building work
With a risk score of 0-20 when calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Table 2
The System must only be installed vertically on vertical, flat, surfaces
The System is certified for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills
The wall cladding system is located more than 1m from a relevant boundary

Note: See CodeMark Certificate for full and up to date information. Please refer to installation instructions and maintenance guide available for download under Documents.

The JSC Weatherboard Systems if designed and installed as per the JSC Board and Batten installation and specifications guide, will meet the following provisions of the New Zealand Building Code (NZBC):

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2, B1.3.4 for the relevant physical conditions of B1.3.3 (a), (h), (j) and (q).
Clause B2 DURABILITY: Performance B2.3.1(b) and B2.3.2(b).
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2, E2.3.5, E2.3.7.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1.

CodeMark

JSC Bevel Back Timber Weatherboard Cladding

JSC

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NZ-Owned Business

JSC installation and specification guide and CodeMark certificate guidelines must be followed.

JSC BevelClad — Bevel Back Weatherboard Cladding System – CodeMark Certificate: CMNZ30082

Location:

In wind zones up to and including extra high, as defined in NZS3604:2011 or situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa, where the building has been specifically engineered
In all exposure zones, excluding microclimates as defined in NZS3604:2011.

Building:

Has the scope limitations of NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Paragraph 1.1; and,
New timber framed buildings with building wrap or rigid air barrier that comply with the NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020)
Existing timber framed buildings where the designer and installer have satisfied themselves that the existing building is suitable for the intended building work
With a risk score of 0-20 when calculated in accordance with NZBC Acceptable Solution E2/AS1, Third Edition including amendment 10 (5 November 2020), Table 2
The System must only be installed horizontally on vertical, flat, surfaces
The System is certified for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills
The wall cladding system is located more than 1m from a relevant boundary.

Note: See CodeMark Certificate for full and up to date information. Please refer to installation instructions and maintenance guide available for download under Documents.

The JSC Weatherboard Systems if designed and installed as per the JSC BevelClad installation and specifications guide, will meet the following provisions of the New Zealand Building Code (NZBC):

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2, B1.3.4 (for the relevant physical conditions of B1.3.3 (a), (h), (j) and (q).
Clause B2 DURABILITY: Performance B2.3.1(b) and B2.3.2(b).
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2, E2.3.5, E2.3.7.
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1.

CodeMark

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