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:





























Commercial and Industrial Roofing

RANZ Members have installed roofing and wall cladding on many of New Zealand's major commercial and industrial developments, bringing their expertise and knowledge to the fore in completing some of the country's largest and most complex buildings.

Experience counts for much in commercial/industrial roofing so whether your job is 10,000 s/m or as large as 40,000 s/m, in choosing a RANZ Member you have the assurance that they are experienced in large scale projects.  Members operate under the Association's Code of Conduct and comly wth all government Acts and regulations governing the building and construction industry which apply to roofing.  They have robust Health & Safety systems in place and most operate under the Construction Contracts Act.

Commercial contracts may extend over many months - and sometimes longer - and a RANZ roofing contractor will bring the benefits of understanding many aspects of a large construction project that must be addressed.  They are well informed about materials and systems and have a good knowledge of dealing with diffcult design details, site management, safety of workers and the logistics of making your commercial/industrial project a reality.

The majority of RANZ Members engaged in commercial roofing are pro-active in having NZQA qualified staff and are well informed about issues relating to large scale projects from compliance and regulatory requirements to working alongside some of the country's leading contractors.

RANZ members will also provide a five year workmanship warranty on completion of the contract.




  • 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