Fire and Acoustic Rated Protection for External Wall Systems

KOROK® External Wall Systems provide a comprehensive solution for fire-rated, acoustic-rated, and weatherproof protection in external applications, including boundary walls. These all-in-one systems are designed for New Zealand’s unique environmental conditions, offering superior fire resistance, sound insulation, and weatherproofing with a fast and cost-effective installation process.

Key Benefits of KOROK® External Wall Systems:

  • Lightweight & Cost-Effective: Ideal for fire-rated boundary walls in commercial buildings, KOROK® systems reduce material costs and installation time.
  • No Engineered Slab Required: Save on construction costs by avoiding the need for specially engineered slabs, leading to significant cost savings and programme advantages.
  • Easy Installation: With no need for cranes or heavy lifting equipment, a small team can manage the installation process, streamlining construction.
  • Weather-Tight & Durable: Specifically designed for New Zealand’s high-wind zones and external conditions, KOROK® systems don’t require additional cladding to ensure long-lasting durability.
  • Fire & Acoustic Efficiency: Enhance fire protection and soundproofing without the need for extra internal framing, making these systems both practical and efficient.
External Wall Systems

COLORSTEEL® Options:

Choose from a full range of COLORSTEEL® options to match your project’s external design.

Resources:

  • Explore our CAD Library for DWG files related to KOROK® External Wall Systems.
  • Access detailed KOROK® External Systems Literature for specifications, installation guides, and more. If you have any questions or need further assistance, contact us for more information.

Download Literature

KOROK External Systems

Link to System SpecPanelsSTCSTC RatingFRRFire RatingOverall System ThicknessLiningFrameCavityFlashingDensityApplicationView CAD Files in LibraryMasterSpec Work Section
EX1




78mm3636-40 -/120/120120n/ano linings n/an/a400 kg/m3External4259KE - Korok Exterior Wall Systems
EX278mm4241-54 -/180/180180n/a1 layer 19mm GIB Fyreline® or acceptable GIB® alternatives or 2 layers 10mm GIB Fyreline® or acceptable GIB® alternativesn/an/a400 kg/m3External4259KE - Korok Exterior Wall Systems
EX378mm3636-40 -/120/120120n/aLongrun profiled steel cladding system as selectedn/an/a400 kg/m3External4259KE - Korok Exterior Wall Systems
EX478mm4241-54 -/180/180180n/aThe internal side lined with 1 layer 19mm GIB Fyreline® or acceptable GIB® alternatives or 2 layers 10mm GIB Fyreline® or acceptable GIB® alternatives.
Longrun profiled steel cladding system as selected.
n/an/a400 kg/m3External

4259KE - Korok Exterior Wall Systems
EX578mm4241-54 -/180/180180n/aThe internal side lined with 1 layer 19mm GIB Fyreline® or acceptable GIB® alternatives or 2 layers 10mm GIB Fyreline® or acceptable GIB® alternatives. Longrun profiled steel cladding system as selectedn/an/a400 kg/m3External
4259KE - Korok Exterior Wall Systems
FS178mm3636-40 -/120/6030-6078mmno linings n/an/a400 kg/m3Fire system5216KC - Korok® Commercial Interior Wall Systems
FS278mm3636-40 -/120/12012078mmno linings n/an/aKOROK® metal fire flashing is installed to the top C-track.400 kg/m3Fire system5216KC - Korok® Commercial Interior Wall Systems
FS378mm4036-40 -/180/180180104mm1 layer 13mm GIB Fyreline® each side n/an/a400 kg/m3Fire system5216KC - Korok® Commercial Interior Wall Systems
FS478mm x25555-59 -/240/240240206mmno linings n/aMinimum 50mm between KOROK® panels400 kg/m3Fire system5216KC - Korok® Commercial Interior Wall Systems
KIM0151mm5855-59 -/60/6030-60194mm1 layer 13mm GIB® Standard plasterboard or equivalent each side64mm steel frame one side28mm Furring channel on direct fix clips the other. Minimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0251mm5755-59 -/60/6030-60122mm1 layer 13mm GIB Noiseline® or equivalent each side28mm Furring channel on resilient mounts one siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0351mm5955-59 -/60/6030-60167mm1 layer 13mm GIB Noiseline® or equivalent each side28mm Furring channel on resilient mounts each siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0451mm5955-59 -/60/6030-60161mm1 layer 13mm GIB® Standard plasterboard or equivalent each side64mm steel frame one sideMinimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0551mm6865-and above -/60/6030-60240mm1 layer 13mm GIB® Standard plasterboard or equivalent each side64mm steel frame each sideMinimum 86mm between the framing. Framing not to touch KOROK® panel600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0678mm5955-59 -/120/120120188mm1 layer 13mm GIB Noiseline® one side, 1 layer 13mm GIB® Standard other side64mm steel frame one sideMinimum 20mm400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0778mm5955-59 -/120/120120188mm1 layer 13mm GIB® Standard each side64mm steel frame one sideMinimum 20mm400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0851mm6160-64 -/60/6030-60181mm1 layer 13mm to GIB® Noiseline or equivalent each side64mm steel frame one side16mm Furring channel on 237 clips direct fix the other. Minimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM0951mm6060-64 -/60/6030-60175mm1 layer 13mm GIB Noiseline® or equivalent each side28mm Furring channel on BetaFix clips each siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM1251mm6160-64 -/60/6030-60167mm1 layer 13mm GIB Noiseline® or equivalent each side64mm steel frame one side16mm Furring channel directly fixed the other. Minimum 10mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIM1351mm6460-64 -/60/6030-60194mm1 layer 13mm GIB® Noiseline or equivalent one side +2 layers 13mm GIB® Noiseline or equivalent the other64mm steel frame one side16mm Furring channel on direct fix clips the other. Minimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0151mm5855-59 -/60/6030-60194mm1 layer 13mm GIB® Standard plasterboard or equivalent each side
64mm steel frame one side, 28mm Furring channel on direct fix clips the otherMinimum 20mm600 kg/m3Apartment / multilevel
5171KI - Korok Inter-tenancy Wall Systems
KIR0251mm5755-59 -/60/6030-60122mm1 layer 13mm GIB Noiseline® or equivalent each side
28mm Furring channel on resilient mounts one siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0351mm5955-59 -/60/6030-60167mm1 layer 13mm GIB Noiseline® or equivalent each side
28mm Furring channel on resilient mounts each siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0451mm5955-59 -/60/6030-60161mm1 layer 13mm GIB® Standard plasterboard or equivalent each side
64mm steel frame one sideMinimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0551mm6865-and above -/60/6030-60240mm1 layer 13mm GIB® Standard plasterboard or equivalent each side
64mm steel frame each sideMinimum 86mm between the framing. Framing not to touch KOROK® panel600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0678mm5955-59 -/120/120120188mm1 layer 13mm GIB Noiseline® or equivalent one side + 1 layer 13mm GIB® Standard plasterboard or equivalent other side
64mm steel frame one sideMinimum 20mm400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0778mm5955-59 -/120/120120188mm1 layer 13mm GIB® Standard plasterboard or equivalent each side
64mm steel frame one sideMinimum 20mm400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0851mm6160-64 -/60/6030-60181mm1 layer 13mm GIB® Noiseline or equivalent each side
64mm steel frame one side, 16mm Furring channel on direct fix clips the otherMinimum 20mm600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR0951mm6060-64 -/60/6030-60177mm1 layer 13mm GIB Noiseline® or equivalent each side
28mm Furring channel on BetaFix clips each siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1451mm5555-59 -/60/6030-60109mm1 layer 13mm GIB® Noiseline plasterboard or equivalent one side
28mm Furring channel on resilient mounts one siden/a600 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1578mm5655-59 -/120/120120141mm1 layer 13mm GIB Noiseline® or equivalent one side
28mm Furring channel on BETAGRIP® Clips one siden/a400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1678mm5755-59 -/120/120120154mm1 layer 13mm GIB Noiseline® or equivalent each side
28mm Furring channel on BETAGRIP® Clips one siden/a400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1778mm6160-64 -/120/120120204mm1 layer 13mm GIB Noiseline® or equivalent each side
28mm Furring channel on BETAGRIP® Clips each siden/a400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1878mm5855-59 -/120/120120204mm1 layer 13mm GIB Noiseline® or equivalent one side + 1 layer 13mm GIB® Standard plasterboard or equivalent other side
28mm Furring channel on BETAGRIP® Clips each siden/a400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR1978mm5555-59 -/120/120120204mm1 layer 13mm GIB® Standard plasterboard or equivalent each side
28mm Furring channel on BETAGRIP® Clips each siden/a400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR2078mm6060-64 -/120/120120233mm1 layer 13mm GIB Noiseline® or equivalent one side + 1 layer 13mm GIB® Standard plasterboard or equivalent the other side
64mm steel frame one side, 28mm Furring channel on BETAGRIP® Clips the other sideMinimum 15mm400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIR2178mm6965-and above -/120/120120262mm1 layer 13mm GIB Noiseline® or equivalent each side
64mm steel frame each sideMinimum 108mm between the framing. Framing not to touch KOROK® panel400 kg/m3Apartment / multilevel5171KI - Korok Inter-tenancy Wall Systems
KIT01A51mm6460-6460/60/3030-60288mm1 layer 10mm GIB® Standard each side90mm steel or timber frame each side86mm overall. Framing not to touch KOROK® panel600 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0151mm6360-6460/60/6030-60288mm1 layer 10mm GIB® Standard plasterboard or equivalent each side
Acoustic insulation must be either Autex GreenStuf SW90 or Pink Batts R 2.2 each side.
KOROK® metal fire flashing is installed to the top C-track.
KOROK® metal KIT flashing is installed to horizontal joints.
90mm steel or timber frame each side86mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy
5171KI - Korok Inter-tenancy Wall Systems
KIT01 Modified51mm6360-6460/60/6030-60282mm1 layer 10mm GIB® Standard plasterboard or equivalent each side
Acoustic insulation must be either Autex GreenStuf SW90 or Pink Batts R 2.2 each side.
KOROK® metal fire flashing is installed to the top C-track.
KOROK® metal KIT flashing is installed to horizontal joints.
90mm steel or timber frame each side80mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy
5171KI - Korok Inter-tenancy Wall Systems
KIT0251mm6665-and above60/60/6030-60288mm1 layer 10mm GIB® Standard one side, 1 layer 10mm GIB Noiseline® other side90mm steel or timber frame each side86mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0351mm6765-and above60/60/6030-60288mm1 layer 10mm GIB Noiseline® each side90mm steel or timber frame each side80mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0451mm6965-and above60/60/6030-60294mm1 layer 13mm GIB Noiseline® each side90mm steel or timber frame each side86mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0551mm6665-and above60/60/6030-60294mm1 layer 13mm GIB® Standard each side90mm steel or timber frame each side80mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.600 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT06A78mm6360-64120/120/6030-60315mm1 layer 10mm GIB® Standard each side 90mm90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel400 kg/m3Terraced housing intertenancy
5171KI - Korok Inter-tenancy Wall Systems
KIT0678mm6360-64120/120/120120315mm1 layer 10mm GIB® Standard each side90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0778mm6665-and above120/120/120120315mm1 layer 10mm GIB® Standard one side, 1 layer 10mm GIB Noiseline® other side90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0878mm6765-and above120/120/120120315mm1 layer 10mm GIB Noiseline® one side, 1 layer 10mm GIB Aqualine (wet) or 10mm GIB Noiseline® (dry) other side90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT0978mm6965-and above120/120/6030-60321mm1 layer 13mm GIB Noiseline® one side, 1 layer 13mm GIB Aqualine (wet) or 13mm Noiseline (dry) other side90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel400 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KIT1078mm6665-and above120/120/120120321mm1 layer 13mm GIB® Standard each side90mm steel or timber frame each side113mm overall. Framing not to touch KOROK® panel or fire flashingKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Terraced housing intertenancy5171KI - Korok Inter-tenancy Wall Systems
KLSD6
78mm3636-40 -/120/6030-6078mmno linings n/an/a400 kg/m3Riser / shafts / ducts

5216KC - Korok® Commercial Interior Wall Systems
KLSD7
78mm3636-40 -/120/12012078mmno linings n/an/aKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Riser / shafts / ducts

5216KC - Korok® Commercial Interior Wall Systems
KLSD8
78mm4241-54 -/180/18018097mm1 layer 19mm GIB Fyreline® direct-fixed one side OR 2 layers 10mm GIB Fyreline® direct-fix one side n/an/a400 kg/m3Riser / shafts / ducts

5216KC - Korok® Commercial Interior Wall Systems
KLSD9
78mm5855-59 -/120/120120175mm1 layer 13mm GIB Noiseline® one side64mm steel frame one sideMinimum 20mm400 kg/m3Riser / shafts / ducts

5216KC - Korok® Commercial Interior Wall Systems
KWR1
78mm3636-40 -/120/6030-6078mmno linings n/an/a400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR2
78mm3636-40 -/120/12012078mmno linings n/an/aKOROK® metal fire flashing is installed to the top C-track. KOROK® metal KIT flashing is installed to horizontal joints.400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR3A
78mm4241-54 -/180/18018098mm2 layers 10mm GIB Fyreline® direct-fixed one side n/an/a400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR3B
78mm4241-54 -/180/18018097mm1 layer 19mm GIB Fyreline® one side n/an/a400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR3
78mm4241-54 -/180/180180104mm1 layer 13mm GIB Fyreline® each side n/an/a400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR4
78mm x25555-59 -/240/240240206mmno linings n/aMinimum 50mm between KOROK® panels400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR5
78mm5855-59 -/120/120120175mm1 layer 13mm GIB Noiseline® one side64mm steel frame one sideMinimum 20mm400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
KWR6
78mm5955-59 -/120/120120188mm1 layer 13mm GIB Noiseline® one side, 1 layer 13mm GIB® Standard other side64mm steel frame one sideMinimum 20mm400 kg/m3Warehouse / retail / factory5216KC - Korok® Commercial Interior Wall Systems
NCS178mm3636-40 -/120/6030-6078mmno linings n/an/a400 kg/m3Noise control5216KC - Korok® Commercial Interior Wall Systems
NCS278mm5855-59 -/120/120120175mm1 layer of 13mm GIB Noiseline® + R1.8 insulation64mm steel frame one sideMinimum 20mm400 kg/m3Noise control
5216KC - Korok® Commercial Interior Wall Systems
NCS378mm5955-59 -/120/120120188mm1 layer of 13mm GIB Noiseline® on one side with R1.8 insulation, 1 layer of 13mm GIB® Standard on the other side64mm steel frame one sideMinimum 20mm400 kg/m3Noise control
5216KC - Korok® Commercial Interior Wall Systems
NCS478mm x27665-and above -/120/120120600mm1 layer 90mm x 42kg/m3 insulation attached to one internal facen/a444mm between KOROK® panels600 kg/m3Cinema

5216KC - Korok® Commercial Interior Wall Systems
K5151mm3636-40 -/60/6030-6051mmno linings n/an/aKOROK® metal fire flashing is installed to the top C-track
OR
13 mm GIB Fyreline® or acceptable GIB® alternatives x 120 mm strip with
sealant is fixed at 250 mm centres top and bottom, using 6g x 32 mm
drywall screws.
600 kg/m3Fire system5216KC - Korok® Commercial Interior Wall Systems
See Scissor Stair information hereScissor stairs
See Passive Fire / Penetrations information here Passive fire / penetrations
See Connections to Steel information here Connections to steel

ColorSteel Colours Available

StonePeak™ Matte
TSR: 53%
LRV: 48%

TidalDrift® Matte
TSR: 29%
LRV: 13%

FlaxPod® Matte
TSR: 20%
LRV: 6%

TuiTuft®
TSR: 66%
LRV: 68%

Cloud
TSR: 69%
LRV: 74%

Titania
TSR: 66%
LRV: 68%

Sandscape®
TSR: 66%
LRV: 66%

Gull Grey
TSR: 57%
LRV: 51%

Sandstone Grey
TSR: 41%
LRV: 27%

SandBar™
TSR: 48%
LRV: 34%

Lichen
TSR: 42%
LRV: 28%

Mist Green
TSR: 39%
LRV: 25%

Permanent Green
TSR: 25%
LRV: 10%

Pioneer Red
TSR: 35%
LRV: 12%

Scoria
TSR: 30%
LRV: 10%

Ironsand
TSR: 25%
LRV: 8%

Karaka
TSR: 24%
LRV: 8%

New Denim Blue
TSR: 24%
LRV: 11%

Grey Friars
TSR: 26%
LRV: 10%

Thunder Grey
TSR: 29%
LRV: 12%

Windsor Grey (LG)
TSR: 20%
LRV: 7%

Slate
TSR: 25%
LRV: 9%

FlaxPod®
TSR: 21%
LRV: 7%

Ebony
TSR: 5%
LRV: 5%