Flashclad Horizontal Weatherboard Cavity Cladding System
- Abbreviation
- Appraisal number 800
- Valid from
- 15/05/2020
- Information provider
- BRANZ Limited
- Information type
- BRANZ Appraisal
- Format
Description
The Flashclad Horizontal Weatherboard Cavity Cladding System is a cavity-based, interlocking powder coated aluminium weatherboard system. It is designed to be used as an external wall cladding system for residential and commercial type buildings where domestic construction techniques are used.
The system includes horizontally fixed BEVELBORD, DUALBORD and EUROBORD weatherboards, internal and external corner flashings, starter strips, cladding jointers, joinery flashings and accessories.
Scope
Timber framing
The Flashclad Horizontal Weatherboard Cavity System has been appraised as an external wall cladding for timber-framed buildings within the following scope:
- The scope limitations of NZBC Acceptable Solution E2/AS1 paragraph 1.1 for timber-framed buildings.
- With a risk score of 0-20 calculated in accordance with NZBC Acceptable Solution E2/AS1 Table 2.
- Situated in NZS 3604 wind zones up to and including extra high.
Steel framing
The Flashclad Horizontal Weatherboard Cavity System has also been appraised as an external wall cladding for steel-framed buildings within the following scope:
- The scope limitations of NASH Building Envelope Solutions paragraph 1.1 for steel-framed buildings.
- With a risk score of 0-20 calculated in accordance with NASH Building Envelope Solutions.
- Situated in NASH Standard Part 2 wind zones up to and including extra high.
Specific design
The Flashclad Horizontal Weatherboard Cavity 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 paragraph 1.1 for timber-framed buildings or NZBC Acceptable Solution E2/AS4 NASH Building Envelope Solutions paragraph 1.1 for steel-framed buildings.
- Constructed with framing subject to specific engineering design.
- Situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.
General
The Flashclad Horizontal Weatherboard Cavity System must only be installed horizontally on vertical, flat surfaces.
The Flashclad Horizontal Weatherboard Cavity System is appraised for use with aluminium window and door joinery that is installed with vertical jambs and horizontal heads and sills. (Note: The Appraisal of the Flashclad Horizontal Weatherboard Cavity System relies on the joinery meeting the requirements of NZS 4211 for the relevant wind zone or design wind pressure.)