Technical Statement
Product Description
Scope of use
The ITI CertClad Bevelback cavity based weatherboard system has been developed for use on buildings in NZ within the scope of NZ building code Clause E2/AS1.
This system can be installed on buildings in NZ with a risk score of 0 - 20 (calculated in accordance with E2/AS1 Table 2) and wind zones up to and including Very High.
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
By comparison with Acceptable Solution E2/AS1
- Clause B2 Durability: Performance B2.3.1(b)
By testing and comparison with Acceptable Solution B2/AS1 and Verification Method B1/AS1
- Clause E2 External moisture: Performance E2.3.2, E2.3.3, E2.3.5
By testing and comparison with Acceptable Solution B2/AS1 and Verification Method B1/AS1
- Clause F2 Hazardous building materials: Performance F2.3.1
By comparison with the performance requirements of code clause F2.3.1
Evidence
The product meets the requirements set out in the following documents, or relevant parts of cited standards within the documents:
Refer to Codemark certification
Supporting evidence
The product has and can make available the following additional evidence to support the above statements:
Product Criteria
Design requirements
The ITI Timspec CertClad Bevel Back Weatherboard system must be installed on buildings in NZ with a risk score of 0 - 20 calculated in accordance with E2/AS1 Table 2, and in wind zones up to and including Very High.
Installation requirements
The ITI Timspec CertClad Bevel Back Weatherboard system must be installed in accordance with the ITI Timspec installation manual.
Check www.certclad.co.nz for latest version.
Maintenance requirements
The ITI Timspec CertClad Bevel Back Weatherboard system must be maintained in accordance with the ITI Timspec installation manual guidelines.
Coatings and finishes must also be applied and maintained in accordance with the relevant coating manufacturer's specifications.
Warrantees
ITI Timspec Weatherboard systems must meet a minimum of 15 years durability as outlined in the New Zealand Standard 3602.
However where required ITI Timspec can offer an extended warranty on a site specific basis.
Environmental
ITI Timspec Accoya and Radiata Pine can be supplied with full FSC chain of custody certification, and Western Red Cedar can be supplied with Full PEFC chain of custody certification.
Relationships
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New Zealand Made |
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Forest Stewardship Council
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Date last validated:
24 August 2026 |
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Date last updated:
24 August 2026 |