KOROK® External Wall Systems

Abbreviation
Appraisal number 722 (2020)
Valid from
20/11/2020

Information provider
BRANZ Limited,
Information type
BRANZ Appraisal,
Format
PDF,

Description

KOROK® External Wall Systems incorporate KOROK® panels that are used to construct non-loadbearing, standard, fire and acoustically rated vertical straight external walls without penetrations.

The KOROK® panel forms the exterior cladding of the KOROK® EX1 and EX2 systems. The KOROK® EX3, EX4 and EX5 systems require protection with a suitable cladding system as specified in the technical literature for KOROK® External Wall Systems.

KOROK® panels are available in two panel profiles (KOROK® Gen 1 and KOROK® Gen 2 panel) and are made from lightweight aerated concrete encased in profiled galvanised sheet steel. For the KOROK® Gen 1 panel profile, paint-coated steel coil may also be used for one or both faces.

Scope

KOROK® External Wall Systems have been appraised for use as vertical straight, single-skin flat walls (EX1 and EX2 systems), including walls requiring overcladding (EX3, EX4 or EX5 systems). All these wall systems may be used as non-loadbearing, standard and fire rated external walls for all buildings of importance levels 1 to 5 as defined by AS/NZS 1170, except that housing and communal residential buildings are excluded and for walls with no penetrations.

Note: Exterior cladding systems used for the KOROK® EX3, EX4 and EX5 systems have not been assessed and are outside the scope of this Appraisal.

KOROK® EX1 and EX2 Systems have been appraised for weathertightness and structural wind loading when used as a cladding solution for buildings situated in specific design wind zones with maximum differential ultimate limit state (ULS) air pressure of up to 1.76 kPa.

When used with KOROK® External Wall Systems, the KOROK® panels are installed in a vertical orientation. The maximum unsupported span for the panels between structural supports is 8 m. The overall height or length of a KOROK® External Wall Systems wall will be determined by the structural support. When used as part of a fire rated system, the maximum unsupported spans of the KOROK® panels in vertical orientation are:

  • 4 m for the EX1 and EX2 systems; and
  • 6 m for the EX3, EX4 and EX5 systems.

Note: Greater spans are subject to specific engineering design and/or fire engineering assessment and are outside the scope of this Appraisal.

KOROK® External Wall Systems are suitable for use in NZS 3604 Exposure Zones B, C and D. Refer to Table 2 of this Appraisal for more detailed durability information.

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KOROK® External Wall Systems

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KOROK® External Wall Systems

Description

KOROK® External Wall Systems incorporate KOROK® panels that are used to construct non-loadbearing, standard, fire and acoustically rated vertical straight external walls without penetrations.

The KOROK® panel forms the exterior cladding of the KOROK® EX1 and EX2 systems. The KOROK® EX3, EX4 and EX5 systems require protection with a suitable cladding system as specified in the technical literature for KOROK® External Wall Systems.

KOROK® panels are available in two panel profiles (KOROK® Gen 1 and KOROK® Gen 2 panel) and are made from lightweight aerated concrete encased in profiled galvanised sheet steel. For the KOROK® Gen 1 panel profile, paint-coated steel coil may also be used for one or both faces.

View on Information Provider website Download this resource (PDF, 407KB)
KOROK® External Wall Systems
Description

KOROK® External Wall Systems incorporate KOROK® panels that are used to construct non-loadbearing, standard, fire and acoustically rated vertical straight external walls without penetrations.

The KOROK® panel forms the exterior cladding of the KOROK® EX1 and EX2 systems. The KOROK® EX3, EX4 and EX5 systems require protection with a suitable cladding system as specified in the technical literature for KOROK® External Wall Systems.

KOROK® panels are available in two panel profiles (KOROK® Gen 1 and KOROK® Gen 2 panel) and are made from lightweight aerated concrete encased in profiled galvanised sheet steel. For the KOROK® Gen 1 panel profile, paint-coated steel coil may also be used for one or both faces.

View on Information Provider website Download this resource (PDF, 407KB)
This resource does not cite any other resources.

KOROK® External Wall Systems

This resource does not CITE any other resources.
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