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Recognising that building designers, engineers and other industry professionals maintain extremely busy schedules,  Roofing Industries welcomes the opportunity to provide this informative and user-friendly section of our website where we seek to provide technical support. We are confident that www.roof.co.nz will be welcomed by design professionals as the “one-stop” roofing and cladding reference tool, updated to meet the requirements of the Building Code on a regular basis.

Note: The following statement only applies to Eurostyle, Multideck andTrapezoidal profiles. Oil canning is defined as a perceived waviness across the flat area of ( in particular, but not limited to) wider metal panels. It is a naturally-occurring phenomenon and can be more discernible under shallow cross lighting, variation in light source, temperature and thermal changes. Oil canning is an aesthetic issue and not a structural problem or defect. The property owner, builder, specifier should be aware that these undulations do not affect performance. Inclusion of swaging systems may also assist in reducing surface waviness.

Along with the extensive amount of information available through this site, our staff are ready and willing to assist with any clarification, and further technical support

  • Latest Technical Bulletins
    • ZAM - ZINC ALUMINIUM MAGNESIUM

      ZAM™ (ZINC- ALUMINIUM – MAGNESIUM) Roofing and Cladding substrate One of the most exiting developments for New Zealand roofing industry in recent years has been the launch of ZAM™ , a reasonably stable metal compound which is demonstrating excellent corrosion protection at the cut edge. The test sample image shows very little surface deterioration, even after 6 years exposure in an extreme salt environment situated at the Muriwai test facility. Particularly favoured for rainwater goods manufacture, but equally impressive for roofing and cladding manufacture, look for ZAM™ to make significant inroads into the roofing industry going forward. ZAM™ coil substrate can also be supplied with Colorcote MagnaFlow™ (ZM8™) and MagnaFlow™ X (ZMX™) paint coatings and available in an extensive colour range. Both unpainted and painted ZAM™ product is manufactured in all Roofing Industries roofing and cladding/walling profiles. When supplied unpainted, the shiny clean surface lends itself nicely to wall lining/cladding and is particularly attractive as Slimline® mini Corrugate

      • Architecural Resources
      • Appropriate Material Selection
      • Other Materials
      • Latest Technical Bulletins
      Last Updated: 6 Oct, 2015 - 11:43am
    • Maintaining your Roofing and Cladding

      Maintaining your Roofing and Cladding

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 9 Oct, 2017 - 3:12pm
    • Colorsteel Luminous Reflectance Values

      Colorsteel Luminous Reflectance Values

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:46pm
    • Colorcote RGB Colour Values

      Colorcote RGB Colour Values

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:40pm
    • Removal of Lichen from Prepainted Roofing

      Removal of Lichen from Prepainted Roofing

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:32pm
    • Use of Touch Up Paints

      Use of Touch Up Paints

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:31pm
    • Sunscreen Damage

      Sunscreen Damage

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:28pm
    • NZMRM Lightweight vs heavyweight roofing

      NZMRM Lightweight Versus Heavyweight Roofing

      • Latest Technical Bulletins
      Last Updated: 30 Nov, 1999 - 1:00pm
    • Atmospheric Guide

      Atmospheric_Guide

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 8 Oct, 2015 - 2:50pm
    • Aluminium Installation guidelines

      NZMRM Installation Guidelines for Aluminium Roofing V1.0

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:24pm
    • Photovoltaic Installation Guidelines

      Photovoltaic Panel Installation Guidelines

      • Architecural Resources
      • Latest Technical Bulletins
      Last Updated: 30 Jan, 2014 - 2:25pm
    • Colorcote Reflectivity values

      Colorcote Reflectivity Values

      • Architecural Resources
      • Consent Assistance Pack
      • Latest Technical Bulletins
      Last Updated: 15 Apr, 2015 - 4:37pm
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