Description

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

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

J.Scott and Company Limited JSC RustiClad Cladding System weatherboards are manufactured from the following species:

• Western Red Cedar (Thuja Plicata),
• Alaskan Yellow Trading as JSC 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 Acceptable 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 RustiClad - Horizontal Rusticated Weatherboard Cladding - Installation and Specification Guide v3.5, Dated February 2024
• b. JSC RustiClad Rusticated Weatherboards - Flexible Underlay 20mm Cavity Fix –Site Drawings v2.4, Dated 12/02/2024
• c. JSC RustiClad Rusticated Weatherboards - Flexible Underlay 20mm Cavity Fix –Architectural Drawings v2.4, Dated 12/02/2024
• d. JSC RustiClad - Horizontal Rusticated Weatherboard Cladding - 20mm Cavity on Rigid Underlay – Technical Drawings v1.2, Dated 12/02/2024
• e. JSC Rusticlad - Horizontal Rusticated Weatherboard Cladding - 45mm Cavity on Flexible Underlay – Technical Drawings v1.2, Dated 12/02/2024
• f. JSC RustiClad - Horizontal Rusticated Weatherboard Cladding - 45mm Cavity on Rigid Underlay – Technical Drawings v1.2, Dated 12/02/2024
• g. JSC RustiClad System - Installation Checklist v1.3, February 2024 h. JSC Exterior Timber Weatherboard - Maintenance Guide v3.1 Dated August 2023

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 horizontally 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 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 system 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.