News

Two iconic roofing brands coming together

20 March 2018

Two of New Zealand’s leading roofing companies, Calder Stewart Roofing and Dimond Industries will come together under the new name of DIMOND ROOFING.

We have created the new brand to represent the best parts of two iconic roll-forming brands that have existed in New Zealand for many years. Dimond Roofing is now the largest roll-former of long run roofing material in New Zealand, with sites from Invercargill to Whangarei.

Whitebait Shacks and Solar Power

4 September 2017

Calder Stewart have recently being involved I n an exciting renovation of a traditional whitebait & fishing hut, there is a lot more to the story than meets the eye and we have been filming the project to give you a small insight into this and how our innovative products can be used.


Calder Stewart Roofing has Returned to Masterspec

3 May 2017

Masterspec is New Zealand’s leading specification tool designed to ensure Architects & Designers alike can put together a comprehensive architectural product specification.


RoofingSmiths comes to Auckland

29 April 2016

Calder Stewart has just appointed a new installer in the Auckland Region.


Steel for Fiji

25 April 2016

Together with the Rotary club of Mosgiel, Calder Stewart has run out two container loads of roofing iron for cyclone ravaged Fiji.

John Courtney Bio - news

19 April 2016

As part of our growing business & further expansion into the North Island, the team at Calder Stewart Roofing warmly welcome John Courtney.



New Brochure Roll-out

7 October 2014

Roofing Division’s New Collaterals Target Wider Market

Calder Stewart Roofing, spearheaded by Business Development Manager JAKE WALKER has developed a whole new suite of marketing brochures that showcase...

Heritage Tray™ Gets a Facelift

6 October 2014

Roofing Division’s Favorite Undergoes a New Design

Calder Stewart Roofing’s Heritage Tray™ is getting a facelift. Its new design will allow the profile to be applied to pitch…


Calder Stewart RoofingSmiths Initiatives

2 September 2014

RoofingSmiths Branches Opening Up

Invercargill - Calder Stewart RoofingSmiths was born from a simple idea – to build on the 40 year reputation of Calder…


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