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ST963 Metal Cladding and Roofing

ST963 is a profiled metal roofing and cladding profile manufactured with four trapezoidal ribs of 46mm in height. Unique design enhancements stiffen the rib shape to provide industry leading resistance to both wind uplift and point load distortion. Translucent sheeting is available to match.

Key Features
  • Superior rib strength resulting in less damage to roof during both construction and serviceable life
  • Groove at rib apex adds strength
  • 46mm rib height — reduced fixing costs due to shorter screws
  • 4 rib profile – potentially reducing fixings required
  • Extended leg on under lap rib prevents distortion of the male rib when fastened
  • Notching/rake cutting — less time cutting around ribs
  • 3 pans leads to a time saving in turn up/turn down
  • 230mm wide pan means it is easy to walk over the roof
  • Strong pan swages means reduced damage from foot traffic
  • Distinct capillary groove creates positive water tight lap
  • Lapping innovation eliminates creep during installation   
  • Profile washer — unique design very strong for high wind loads
  • Purlin spacing is up to 4.5m in .55 and 3m .40 (subject to design loading)
Environmental Choice (ECNZ) Licensed
ECNZ Licensed
NZ Made
NZ Made
NZ-Owned Business
NZ-Owned Business
Scope of Use

ST963 is suitable for a wide range of end uses including roof and wall cladding, ceilings and linings. It can be spring curved in .55mm thickness G550 steel to a minimum radius of 60m. The specific design makes it suitable for high wind zones and all corrosion zones.

Limitations on Use

For structures requiring compliance with NZBC Clause E2, minimum pitch is 3°. Roof runs in excess of 80m should be checked for water run-off capacity. Provision for thermal expansion should be considered for lengths in excess of 18m in steel and 12m for other materials.

3° Minimum Roof Pitch Required
NZS 3604 Corrosion Zone D suitable
Corrosion Exposure Zone D
NZS 3604 Wind Zone Specific Design suitable
Specific Design Wind Zone
Statement of Building Code Compliance

ST963 if designed, used, installed and maintained in accordance with the statements and conditions of the technical literature, will meet or contribute to meeting the following provisions of the NZBC:

  • Clause E2 External Moisture: ST963 will comply with the performance requirements of E2 when installed in accordance with E2/AS1. Alternatively, when designed in compliance with the NZ Metal Roof and Wall Cladding Code of Practice, or Steel & Tube Roofing Solutions Product Guide, ST963 will comply with Clause E2 where SLS wind loads do not exceed 3.0 kPa
  • Clause B1 Structure: In .40mm or .55mm steel, G550 grade (high strength) ST963 will meet the requirements of B1. Refer to the PTS
  • Clause B2 Durability: With normal maintenance, the requirements of Acceptable Solution B2/AS1 will be met by nominated materials as defined in New Zealand Steel Specifiers and Builders Guide June 2010. Refer to the Environmental Categories document
In-Service History

ST963 has been widely used on many large commercial projects around the country including the Avanti International Velodrome project in Cambridge.

Other Performance Attributes

ST963 conforms to all requirements under the MRM Code Of Practice.

B2 Durability compliant
C Protection from Fire compliant
Protection from Fire
E2 External Moisture compliant
External Moisture
BIM Files LInk
BIM-spec Full Library
PTS / Data Sheet
Colorsteel Resources
Environmental Choice NZ Award
Test Results
Maintenance Instructions
Colorsteel Material Selection
Brochure: Product Showcase
Brochure: Roofing Solutions Product Guide
Features and Benefits of ST963
Colour Range
Order Samples
Product resources and links

Steel & Tube are a New Zealand supplier of a range of steel products and services.

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