Archimax® Horizontal Cladding System
- Abbreviation
- Appraisal number 1173 (2026)
- Valid from
- 24/09/2026
- Information provider
- BRANZ Limited,
- Information type
- BRANZ Appraisal,
- Format
- PDF,
Description
The Archimax® Horizontal Cladding System is a cavity-based, inter-locking powder-coated aluminium weatherboard system. It is designed to be used as an external wall cladding system for residential and light commercial type buildings where domestic construction techniques are used.
The system includes horizontally fixed weatherboards, cavity battens, internal and external corner flashings, starter strips, cladding jointers, joinery flashings and accessories.
Scope
Timber Framing
1. The Archimax® Horizontal Cladding System has been appraised for use as an external wall cladding for timber-framed buildings within the following scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1 for timber-framed buildings; and,
- with a risk score of 0–20, calculated in accordance with NZBC Acceptable Solution E2/AS1; and,
- situated in NZS 3604 Wind Zones up to, and including, Extra High.
Steel Framing
2. The Archimax® Horizontal Cladding System has been appraised for use as an external wall cladding for steel-framed buildings within the following scope:
- the scope limitations of NASH Building Envelope Solutions for steel-framed buildings; and,
- with a risk score of 0-20, calculated in accordance with NASH Building Envelope Solutions; and,
- situated in NASH Standard Part Two Wind Zones up to, and including, Extra High.
Specific Design
3. The Archimax® Horizontal Cladding System has also been appraised for weathertightness and structural wind loading when used as an external wall cladding system for buildings within the following scope:
- the scope limitations of NZBC Acceptable Solution E2/AS1 for timber-framed buildings or NASH Building Envelope Solutions for steel-framed buildings; and,
- constructed with framing subject to specific design; and,
- situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.
General
4. The Archimax® Horizontal Cladding System must only be installed horizontally over vertical cavity battens. In all instances, it must be installed on vertical, flat surfaces.
5. The Archimax® Horizontal Cladding System must only be used with window and doors that comply with NZBC Acceptable Solution E2/AS1 or that are covered by a valid BRANZ Appraisal or NZ CodeMark Certification.
