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.



Latest ROOFLINK out now!

  • Building products not up to standard – consumers should not be at risk. RANZ joins call for a review of the Standards and Accreditation Act 2015.
  • CEO Graham Moor rolls out the strategic plan – roofing school, re-roofing to be licensed, a refresh for the RANZ brand
  • Skills advised that the updated NZ Certificate in Roofing (Installation) Level 4 is coming soon
  • Roof gardens growing in popularity in New Zealand: they’re not a cheap option but make great use of otherwise redundant space
  • 2018 Roofing Games – MRM is looking for the country’s best long run metal roofers. Competition starts in February 2018. Get those entries in.
  • Coverage from the Rotorua conference – speakers, trade show, awards
  • Technical – corrosivity in the environment – check out the material selection table to choose the appropriate materials for your location
  • The How-to guides for metal roof flashings and metal roof penetrations can contribute to an LBP’s elective learning and on-the-job learning for skills maintenance. LBP Registrar Paul Hobbs explains.
  • Health & Safety warnings around items falling from scaffolding. Also serious issues around Forklifts and several incidents involving Safety Nets, either due to poor installation or non-compliant products  

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