Nu-Wall Cladding: Proven Serviceability During Seismic Activity

A sample structure, clad with Nu-Wall, was subjected to racking displacement (as would be expected to occur during an earthquake) forcing the shape of the structure into that of a parallelogram.

The test procedure involved incrementally increasing the amount of displacement up to a maximum of ±72mm, with inspection of the cladding made at each increment. At ±48mm displacement, some slight deformation occurred to the ends of four of the cladding boards, due to compression of the vertical dimension of the sample structure. No further damage was observed throughout the remainder of the testing and no components failed or became detached from the structure.

At the conclusion of the testing, the cladding appeared to remain fully serviceable apart from the slight damage referred to previously. The results of testing met the requirements of an Importance Level 4 building, on which Nu-Wall was specified.

Nu-Wall cladding boards are fixed to a building’s structure independently of each other, with no penetration by the fasteners used. This permits movement of the material relative to the structure, enabling the cladding to achieve the results observed during testing.

Copies of the test report are available on request.

Horizontal Cladding Profiles

Nu-Wall Cladding

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The Nu-Wall Aluminium Cladding System — Horizontal on Cavity is a cavity-based, inter-locking powder-coated aluminium weatherboard system.

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

The Nu-Wall Aluminium Cladding System — Horizontal on Cavity has been appraised as an external wall cladding for buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
constructed with timber framing complying with the NZBC; and,
with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2; and,
situated in NZS 3604 Wind Zones up to, and including, Extra High.

The Nu-Wall Aluminium Cladding System — Horizontal on Cavity has also been appraised for weathertightness and structural wind loading when used as an external horizontally fixed wall cladding system for buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
constructed with timber and steel framing complying with the NZBC; and,
situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

See BRANZ Appraisal 550 for full information.

In the opinion of BRANZ, the Nu-Wall Aluminium Cladding System — Horizontal on Cavity, if designed, used, installed and maintained in accordance with the statements and conditions of Appraisal 550, will meet the following provisions of the NZBC:

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4. — meets the requirements for loads arising from self-weight, wind and impact [i.e. B1.3.3 (a), (h) and (j)]
Clause B2 DURABILITY: Performance B2.3.1 (b), 15 years
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1

See BRANZ Appraisal 550 for full information.

BRANZ Appraised

Vertical Cladding Profiles

Nu-Wall Cladding

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The Nu-Wall Aluminium Cladding System — Vertical is a cavity-based or direct-fixed, inter-locking powder-coated aluminium weatherboard system.

Post-Consumer Recyclable Content

Pre-Consumer Recycled Content

See BRANZ Appraisals 556 and 870 for full information.

The Nu-Wall Aluminium Cladding System — Vertical on Cavity has been appraised as an external wall cladding for buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and,
with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2; and,
situated in NZS 3604 Wind Zones up to, and including, Extra High.

The Nu-Wall Aluminium Cladding System — Vertical on Cavity 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 with regard to building height and floor plan area; and,
constructed with timber and steel framing subject to specific engineering design; and,
situated in specific design wind pressures up to a maximum design differential ultimate limit state (ULS) of 2.5 kPa.

See BRANZ Appraisal 870 for full information.

The Nu-Wall Aluminium Cladding System — Vertical Direct Fixed has been appraised as an external wall cladding for buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1; and, ¬ constructed with timber framing complying with the NZBC; and,
with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2; and,
situated in NZS 3604 Wind Zones up to, and including, Extra High.

The Nu-Wall Aluminium Cladding System — Vertical Direct Fixed has also been appraised as an external wall cladding for steel-framed buildings within the following scope:

the scope limitations of NZBC Acceptable Solution E2/AS1, Paragraph 1.1 with regard to building height and floor plan area; and,
constructed with steel framing complying with the NZBC; and,
with a risk score of 0-20, calculated in accordance with NZBC Acceptable Solution E2/AS1, Table 2; and,
situated in NZS 3604 Wind Zones up to, and including, Extra High.

See BRANZ Appraisal 556 for full information.

See BRANZ Appraisals 556 and 870 for full information.

In the opinion of BRANZ, the Nu-Wall Aluminium Cladding System — Vertical on Cavity, if designed, used, installed and maintained in accordance with the statements and conditions of this Appraisal, will meet the following provisions of the NZBC:

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4 — meets the requirements for loads arising from self-weight, wind and impact [i.e. B1.3.3 (a), (h) and (j)]
Clause B2 DURABILITY: Performance B2.3.1 (b) 15 years, and B2.3.2
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1

See BRANZ Appraisal 870 for full information.

In the opinion of BRANZ, the Nu-Wall Aluminium Cladding System — Vertical Direct Fixed, if designed, used, installed and maintained in accordance with the statements and conditions of this Appraisal, will meet the following provisions of the NZBC:

Clause B1 STRUCTURE: Performance B1.3.1, B1.3.2 and B1.3.4 — meets the requirements for loads arising from self-weight, wind and impact [i.e. B1.3.3 (a), (h) and (j)]
Clause B2 DURABILITY: Performance B2.3.1 (b) 15 years
Clause E2 EXTERNAL MOISTURE: Performance E2.3.2
Clause F2 HAZARDOUS BUILDING MATERIALS: Performance F2.3.1

See BRANZ Appraisal 556 for full information.

BRANZ Appraised

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