Description

The JSC VertiClad Cladding System is an external wall cladding installed over a 20 mm or 45 mm ventilated cavity.

The JSC VertiClad Cladding System (the System) comprises: vertically fixed weatherboards installed over H3.2 treated timber castellated cavity battens to form either a 20 mm cavity or a 45 mm cavity, fascia boards and moulding profiles.

JSC VertiClad Cladding System weatherboards are manufactured from the following materials:

• Western Red Cedar (Thuja Plicata),
• Alaskan Yellow Cedar (Cupressus nootkatensis),
• Radiata Pine – H3.2 (MicroPro® treated),
• Nordic Pine – H3.2 (MicroPro® treated),
• Iroko (Milicia excelsa),
• TMT Amba,
• TMT Taiga RW,
• TMT Taiga WW,
• TMT Taxon, or
• TMT Tuscan.

Scope

1. The system is certified for timber-framed buildings:

• a. with walls designed in accordance with NZS3604:2011 Timber-framed buildings, as modified by Acceptabl Solution B1/AS1 Amendment 20 and within the scope of Acceptable Solution E2/AS1, Third Edition including amendment 10 (5/11/2020) Paragraph 1.1, or of at least equivalent stiffness to the framing provisions of NZS3604:2011, and situated in Wind Zones (as defined in NZS 3604:2011) up to and including Extra High; or
• b. subject to specific engineering design in accordance with Verification MethodB1/VM1 Amendment 20 up to a maximum design differential ultimate limit state (ULS) wind pressure of 2.5 kPa, and
• c. up to 10 m in height, and
• d. 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, and
• e. situated:
  
  • i. in all exposure zones (excluding microclimates) as defined in NZS3604:2011, Paragraph 4.2.4, and
  • ii. more than 1m from a relevant boundary

2. The System shall be designed, used, installed and maintained in accordance the following sets of documents collectively referenced as the Applicable Technical Specification:

• a. JSC Verticlad, Vertical Shiplap Weatherboard Cladding, Design Guide, Version 1.0, February 2025
• b. JSC Verticlad, Vertical Shiplap Weatherboard Cladding, Installation Guide, Version 3.6, February 2025
• c. JSC Verticlad System Shiplap Installation Checklist, v1.4, February 2025
• d. JSC Exterior Timber Weatherboard Cladding, Maintenance Guide, Version 3.2, February 2025
• e. Technical Drawings JSC Verticlad – Vertical Shiplap Weatherboards - Flexible Underlay 20 mm Cavity Fix, Version 2.5, 24/02/2025
• f. Technical Drawings - JSC Verticlad – Vertical Shiplap Weatherboards - Rigid Underlay 20 mm Cavity Fix, Version 2.5, 24/02/2025
• g. Technical Drawings - JSC Verticlad – Vertical Shiplap Weatherboards - Flexible Underlay 45 mm Cavity Fix, Version 2.5, 24/02/2025
• h. Technical Drawings - JSC Verticlad – Vertical Shiplap Weatherboards - Rigid Underlay 45 mm Cavity Fix, Version 2.5, 24/02/2025

3. The System shall:

• a. be fixed over a ventilated cavity in conjunction with a flexible building underlay or rigid air barrier in accordance with the Applicable Technical Specification, and
• b. be installed vertically on vertical, flat surfaces, and
• c. use the components and board profiles as described in the Applicable Technical Specification (where these components are substituted with alternative products, these applications fall outside the scope of this certification), and
• d. incorporate joinery that meets the requirements of NZS 4211:2008 including Amendment 1 for the relevant Wind Zone or wind pressure.

4. Stainless steel or silicon bronze fixings shall be used with TMT Amba, TMT Taiga RW, TMT Taiga WW, TMT Taxon and TMT Tuscan weatherboards.

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 intended used of the system as described in this certificate and that all design conditions of this certificate have been met.

6. The installer shall supply a signed Declaration that the product has been installed in accordance with the installation conditions of this certificate, for consideration for issuing a Code Compliance Certificate (CCC).