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Designing smart with profiled metal roofing.

 

It is easy when designing a building to leave the roof cladding until last; however, consideration should be made at the outset of design of the Kℓ pressure coefficient factors, which apply to roof cladding and the purlins at the periphery of all buildings.
Some engineers are now...

Proposed NZMRM Systems Guarantee update

Strategic Background

Recent and signalled changes in Law, around Builder liability, Council liability and Risk based consenting, have created a legal environment that is conducive to the development of an extended range of builder guarantees.

On the back of its...

Green Building

NZ Green Building Council updates the Steel Credit in Green Star NZ to something achievable.

If you build upmarket offices, commercial buildings or schools this should mean something to you. If it does read on to discover how we have finally made the steel credit applicable to NZ made...

Metrotile Introduces Vent Tiles For Its Metal Tile

 

NZMRM has long been promoting the need to ventilate roof spaces under metal roofs, to avoid moisture problems caused when moisture vapour passing from the house into the roof space cannot escape.  Stuart Thomson has discussed this in detail in his recent series of Scope articles.  NZMRM...

Solar Energy Panels And Metal Roofing

NZMRM has been involved in discussions about solar water heating panels before and has contributed to the MBIE G12/AS2 and “Solar Water Heaters - Guidance for suppliers, installers and building consent authorities – December 2009”. We have commented on the issues with these in at least one Scope...

Ventilation Of Attic Spaces

It is said that money makes the world go around, but actually fashion is the driver, not only when talking women’s apparel but talking the building industry as well. A lot of house renovations are started just because it is ‘out of date’ or ’past its use by date’ or simply because it is ‘old-...

Auckland Council Proposal Would Raise The Cost Of Building

The Proposed Auckland Unitary Plan (PAUP) contains a regulation preventing the use of uncoated roofing and cladding with an exposed surface or surface coating of “more than 10% zinc or copper”. This proposal would effectively ban the use, going forward, of metal roofing that is not coated. There...

Glare, Reflectivity And Reflectance

In Scope 32, Stuart Thomson wrote a technical article about Solar Reflectance and Thermal Emittance and the relationship between the apparent visual colour of a metal roof and its ability to absorb or not absorb heat. The way in these factors can be modified by the use of “cool pigments” to...

Code Of Practice On-Line

Code of Practice on-line

As the NZMRM updates its COP and prepares for a new version, a brief review of the past and current documents is presented by Stuart Hayman of the MRM Technical Committee.

The NZMRM Metal Roof and Wall Cladding of Practice is now available...

Cool Roofs Hot Topic

Do you think that colour has gone out of your life recently? Is it just a matter of getting older or is it a fact?Does everything look black and white to you? What colour car do you drive? If it is black, grey or silver then you join the 60 % majority of New Zealanders who probably do...

Corrosion

The NZMRM Corrosion Project.
Stuart Hayman & Stuart Thomson

In 2012 the NZMRM Technical Committee launched a most challenging, expensive and exciting piece of research into the causes of corrosion of metal roof and wall cladding systems and how to minimise its effects. The MRM...

Insulation

by Stuart Thomson

In this third article of the series Stuart Thomson looks at the effects that modern ideas about insulation are having on what we see as a serious problem in complaints of “leaking” and “condensation”. Since the last article we have had a couple of meetings with...

Ventilation

The Roofing Industry is currently seeing a significant increase in complaints of “leaking” and “condensation”
especially in systems like skillion roofs and curved roofs. NZMRM and underlay manufacturers believe the answer lies in increasing what is currently the non-existent ventilation of...

Noise Attenuation By Metal Roofs

Stuart Hayman, March 2012

In October 2011 we updated you on the next stage of the noise through roofs technical project. The Acoustics Research Group of the University of Canterbury did some research for NZMRM to determine the
attenuation of road traffic noise through various roof...

Waihohonu Hut Tongariro National Park

By Graham Hepburn

Wellington firm Pynenburg and Collins Architects has designed about 70 tramping huts for the Department of Conservation (DoC) in the past 11 years. And in that time they have created a manual for huts that accommodate up to 40 people, including standard designs for...

Noise Control Project

Update on Noise Control Project

Stuart Hayman Oct 2011

From 2006/7 some metal roofs in Auckland were required to have plywood sarking installed underneath in high road traffic zones. This was in the belief that metal roofs without plywood would allow the noise transmitted into...

The Underlay Dilemma

Metal roof and wall claddings contribute a lot more to buildings than just keeping the water out. They are part of the moisture management of the building and a necessary part of the regulatory system as required by the NZBC.E3 (internal moisture).

This article is the first of three which...

Stainless Steel Fasteners

Stuart W.Thomson
Building Consultant

In the last year or so we have seen an increase in demand from BCAs for the use of stainless steel screws in Zincalume® roofs in severe environments.This is partly based on their interpretation of NZS 3604, which of course is...

Fletcher Synergies At Work

The new Laminex building in Penrose is testament to what can be achieved when Fletcher companies work together. Work began in May 2010 and was completed in December 2010 in time for a fresh start to 2011 for Laminex staff.


Dimond supplied the Roofing and Cladding product for the...

Quality Of Imported Coil Coated Steel

Note: Dave Hall, Chairman, MRM Technical committee. Whilst the results from the samples tested showed that the best result was achieved by NZ made painted steel and the least durable was from an imported sample, we should not draw the conclusion that all NZ made products are better and all...

Waitangi Gateway

“Staff at the Waitangi Treaty Grounds now have the space and facilities to welcome and engage with every visitor individually,” commented Waitangi National Trust...

Forgotten Lessons Of The Past

Following the Christchurch earthquakes, engineering experts have recommended replacing heavy tile roofs with lightweight metal roofing.Inspections revealed that extensive damage was caused to houses by chimneys falling...

Buckling Of Roof Flashings

BUCKLING OF ROOF FLASHINGS
Rod Newbold (Commercial Manager, Steel & Tubing Roofing Products),John Turner (Wood Technologist, SCION)

THE PROBLEM.
There has been a spate of compression buckling of transverse roof flashings, such as ridges, aprons, and apex...

Stockton Mine Coal Handling And Processing Plant

Mother Nature throws up plenty of issues on this project. Article supplied coutesy of Jenny Bain. Rooflink

Stockton Mine in Buller, New Zealand’s largest opencast coal mining operation, has been a site of coal extraction since the late 1870s. Located high on a plateau...

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