Industry Codes of Practice Links




Available by free download from the NZ Metal Roofing Manufacturers' Inc website:




TORCH-ON MEMBRANE Code of Practice

The Code of practice for Torch-On Membrane Systems for Roofs and Decks published 2008 is available for free download from the Waterproofing Membrane Association website:


View or download from the Ministry's website:






























Roofing your home

Homeowners are taking more interest in the roof system of their home, realising it is an important investment within the total home package. The choice of roof requires careful consideration, whether you are installing a new roof or re-roofing an existing one.

RANZ members can assist and advise you with selection of the type of roof best suited for your needs and environmental conditions from the wide range of roofing systems and products available on the New Zealand market.

Heightened Consumer Awareness

Choosing the right installer

In today’s climate, consumers are becoming more aware and cautious of the tradespeople they employ and the importance of using members of national trade organisations. Essential to the longevity of a roof system is quality product competently installed by a roofing specialist.

Over the years roofing has become a specialist stand-alone trade demanding greater knowledge and skills by those installing roofs, in order to keep up with change in architectural design, technology and the varied number of products and profiles now available in the marketplace.

For assurance of quality, make the right choice! Use a specialist installation and maintenance company for all your roofing needs - CONSULT with and employ the expertise and services of a RANZ Member.

Choosing the right roofing product

Location and environmental conditions dictate the type of roofing material best suited for your building. Use of the wrong product in coastal areas for example, could result in premature corrosion or breakdown of the roof system.

In the case of a re-roof, using an alternative product may require additional structural work. Aesthetic appearance, although important, comes second to the performance and durability of the roof.

Essential to the longevity of your roof is compatability of the products used to install and complete the roof system.

Investigate your options carefully and the product warranties that go along with your product of choice. CONSULT our product supplier and installation company members for advice.



  • ROOFLINK - latest issue out now
  • INNOVATION: Cladding on a new car park in Christchurch is a great example of a tinsmith's skill
  • Project Unite Ltd (Hamilton) installs a KingZip roof system on the new Delegat winery near Hastings. 
  • CEO Graham Moor leads a team to Vancouver to explore the RCABC's roof training school. Would a roofing school be possible in New Zealand to address the acute skill shortage? 
  • RANZ has developed a check list for re-roofing. This will assist members when assessing potential re-roof jobs with all aspects of replacing a roof notified on this document for the roofer to use when assessing the work and what will be required.
  • New rules now apply whenever retentions are withheld and many subcontract agreements will need to be modified.
  • Changes to provisional tax and new rules on withholding tax are outlined by Tax Management NZ's Chris Cunniffe.



RANZ Sponsors


New Zealand Steel


Alsynite NZ Limited
Ampelite (NZ) Ltd
DLM Wallace Pumps
Gerard Roofs
Steel & Tube


Aotea Machinery
Ardex New Zealand Ltd
Bremick Pty Ltd NZ
Calder Stewart Roofing
CSR/Monier Roofing
Dupont Protection Solutions
EDL Fasteners Ltd
Fribesco Ltd
Kingspan Insulated Panels
Laminex New Zealand
Maximum Safety NZ Ltd
Metalcraft Roofing
Monkey Toe Group
Pacific Coilcoaters
PSP Translucent Roofing Ltd
Roofing Industries Ltd
Tasman Insulation New Zealand


Nuts & Bolts & Screws Ltd
Stratco NZ Ltd
Ramset Reid NZ
Viking RoofSpec
Wakefield Metals Ltd